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jbe@58
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1
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jbe@58
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2 /*** Version ***/
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jbe@229
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3 #define MOONBR_VERSION_STRING "1.0.1"
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jbe@58
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4
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5
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6 /*** Compile-time configuration ***/
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7
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8 #define MOONBR_LUA_PANIC_BUG_WORKAROUND 1
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9
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10
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11 /*** C preprocessor macros for portability support ***/
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12
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13 #ifndef __has_include
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14 #define __has_include(x) 0
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15 #endif
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16
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17
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jbe@0
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18 /*** Include directives for used system libraries ***/
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19
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20 #include <stdlib.h>
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21 #include <stdint.h>
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22 #include <string.h>
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23 #include <errno.h>
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24 #include <unistd.h>
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25 #include <signal.h>
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26 #include <sys/wait.h>
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27 #include <sys/resource.h>
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28 #include <poll.h>
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29 #include <time.h>
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30 #include <sys/time.h>
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31 #include <sys/socket.h>
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32 #include <sys/un.h>
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33 #include <netinet/in.h>
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34 #include <netdb.h>
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35 #include <arpa/inet.h>
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jbe@135
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36 #include <getopt.h>
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jbe@0
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37 #include <sys/file.h>
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jbe@135
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38 #include <syslog.h>
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jbe@0
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39 #if defined(__FreeBSD__) || __has_include(<libutil.h>)
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40 #include <libutil.h>
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41 #endif
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42 #if defined(__linux__) || __has_include(<bsd/libutil.h>)
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43 #include <bsd/libutil.h>
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44 #endif
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45 #if defined(__linux__) || __has_include(<bsd/unistd.h>)
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46 #include <bsd/unistd.h>
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47 #endif
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48
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49
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jbe@0
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50 /*** Fallback definitions for missing constants on some platforms ***/
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51
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jbe@0
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52 /* INFTIM is used as timeout parameter for poll() */
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jbe@0
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53 #ifndef INFTIM
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jbe@0
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54 #define INFTIM -1
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55 #endif
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jbe@0
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56
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jbe@0
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57
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jbe@0
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58 /*** Include directives for Lua ***/
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59
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60 #include <lua.h>
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jbe@0
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61 #include <lauxlib.h>
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62 #include <lualib.h>
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63
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64
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jbe@79
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65 /*** Include directive for moonbridge_io library ***/
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jbe@79
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66
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jbe@79
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67 #include "moonbridge_io.h"
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jbe@79
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68
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jbe@79
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69
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jbe@0
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70 /*** Constants ***/
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jbe@0
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71
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jbe@0
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72 /* Backlog option for listen() call */
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jbe@0
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73 #define MOONBR_LISTEN_BACKLOG 1024
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jbe@0
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74
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jbe@0
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75 /* Maximum length of a timestamp used for strftime() */
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jbe@0
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76 #define MOONBR_LOG_MAXTIMELEN 40
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jbe@0
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77
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jbe@0
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78 /* Maximum length of a log message */
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jbe@0
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79 #define MOONBR_LOG_MAXMSGLEN 4095
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jbe@0
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80
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jbe@0
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81 /* Exitcodes passed to exit() call */
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jbe@0
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82 #define MOONBR_EXITCODE_GRACEFUL 0
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jbe@0
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83 #define MOONBR_EXITCODE_CMDLINEERROR 1
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jbe@0
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84 #define MOONBR_EXITCODE_ALREADYRUNNING 2
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jbe@0
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85 #define MOONBR_EXITCODE_STARTUPERROR 3
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jbe@0
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86 #define MOONBR_EXITCODE_RUNTIMEERROR 4
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jbe@0
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87
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jbe@0
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88 /* Maximum length of a line sent to stderr by child processes */
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jbe@0
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89 #define MOONBR_MAXERRORLINELEN 1024
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jbe@0
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90
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91 /* Maximum length of an error string returned by strerror() */
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92 #define MOONBR_MAXSTRERRORLEN 80
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93
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jbe@213
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94 /* Error message for noncompliant strerror_r() implementation on GNU systems */
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jbe@213
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95 #define MOONBR_STRERROR_R_MSG "Error detail unavailable due to noncompliant strerror_r() implementation"
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jbe@213
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96
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jbe@0
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97 /* Status bytes exchanged between master and child processes */
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jbe@124
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98 #define MOONBR_STATUS_IDLE 'I'
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jbe@124
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99 #define MOONBR_COMMAND_CONNECT 'C'
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jbe@124
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100 #define MOONBR_COMMAND_TERMINATE 'T'
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jbe@124
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101 #define MOONBR_STATUS_GOODBYE 'B'
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jbe@0
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102
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jbe@0
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103 /* Constant file descriptors */
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jbe@0
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104 #define MOONBR_FD_STDERR 2
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jbe@0
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105 #define MOONBR_FD_CONTROL 3
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jbe@0
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106 #define MOONBR_FD_END 4
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jbe@0
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107
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jbe@0
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108 /* Return values of moonbr_try_destroy_worker() */
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jbe@0
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109 #define MOONBR_DESTROY_NONE 0
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jbe@0
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110 #define MOONBR_DESTROY_PREPARE 1
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jbe@0
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111 #define MOONBR_DESTROY_IDLE_OR_ASSIGNED 2
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jbe@0
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112
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jbe@0
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113
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jbe@0
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114 /*** Types ***/
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jbe@0
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115
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jbe@0
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116 /* Enum for 'moonbr_pstate' */
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jbe@0
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117 #define MOONBR_PSTATE_STARTUP 0
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jbe@0
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118 #define MOONBR_PSTATE_RUNNING 1
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jbe@0
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119 #define MOONBR_PSTATE_FORKED 2
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jbe@0
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120
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jbe@0
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121 /* Enum for 'proto' field of struct moonbr_listener */
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jbe@274
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122 #define MOONBR_PROTO_INTERVAL 1
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jbe@274
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123 #define MOONBR_PROTO_LOCAL 2
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jbe@274
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124 #define MOONBR_PROTO_TCP 3
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jbe@0
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125
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jbe@0
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126 /* Data structure for a pool's listener that can accept incoming connections */
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jbe@0
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127 struct moonbr_listener {
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jbe@0
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128 struct moonbr_pool *pool;
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jbe@0
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129 struct moonbr_listener *prev_listener; /* previous idle or(!) connected listener */
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jbe@0
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130 struct moonbr_listener *next_listener; /* next idle or(!) connected listener */
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jbe@0
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131 int proto;
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jbe@0
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132 union {
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jbe@0
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133 struct {
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jbe@0
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134 char *name; /* name of interval passed to 'connect' function as 'interval' field in table */
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jbe@274
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135 int main; /* nonzero = termination of 'connect' function causes shutdown */
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jbe@0
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136 int strict; /* nonzero = runtime of 'connect' function does not delay interval */
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jbe@0
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137 struct timeval delay; /* interval between invocations of 'connect' function */
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jbe@0
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138 struct timeval wakeup; /* point in time of next invocation */
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jbe@0
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139 } interval;
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jbe@0
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140 struct {
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jbe@125
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141 union {
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jbe@125
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142 struct sockaddr addr_abstract;
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jbe@125
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143 struct sockaddr_un addr_un;
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jbe@125
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144 struct sockaddr_in addr_in;
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jbe@125
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145 struct sockaddr_in6 addr_in6;
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jbe@125
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146 } addr;
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jbe@125
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147 socklen_t addrlen;
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jbe@125
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148 } socket;
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jbe@125
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149 } type_specific;
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jbe@125
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150 union {
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jbe@0
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151 struct {
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jbe@125
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152 char ip[INET6_ADDRSTRLEN]; /* IP to listen on */
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jbe@0
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153 int port; /* port number to listen on (in host endianess) */
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jbe@0
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154 } tcp;
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jbe@0
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155 } proto_specific;
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jbe@0
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156 int listenfd; /* -1 = none */
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jbe@0
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157 int pollidx; /* -1 = none */
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jbe@0
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158 };
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jbe@0
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159
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jbe@0
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160 /* Data structure for a child process that is handling incoming connections */
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jbe@0
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161 struct moonbr_worker {
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jbe@0
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162 struct moonbr_pool *pool;
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jbe@0
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163 struct moonbr_worker *prev_worker;
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jbe@0
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164 struct moonbr_worker *next_worker;
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jbe@0
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165 struct moonbr_worker *prev_idle_worker;
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jbe@0
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166 struct moonbr_worker *next_idle_worker;
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jbe@127
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167 int main; /* nonzero = terminate Moonbridge when this worker dies */
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jbe@0
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168 int idle; /* nonzero = waiting for command from parent process */
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jbe@0
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169 int assigned; /* nonzero = currently handling a connection */
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jbe@0
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170 pid_t pid;
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jbe@0
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171 int controlfd; /* socket to send/receive control message to/from child process */
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jbe@0
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172 int errorfd; /* socket to receive error output from child process' stderr */
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jbe@0
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173 char *errorlinebuf; /* optional buffer for collecting stderr data from child process */
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jbe@0
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174 int errorlinelen; /* number of bytes stored in 'errorlinebuf' */
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jbe@0
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175 int errorlineovf; /* nonzero = line length overflow */
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jbe@0
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176 struct timeval idle_expiration; /* point in time until child process may stay in idle state */
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jbe@0
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177 struct moonbr_listener *restart_interval_listener; /* set while interval listener is assigned */
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jbe@0
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178 };
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jbe@0
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179
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jbe@0
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180 /* Data structure for a pool of workers and listeners */
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jbe@0
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181 struct moonbr_pool {
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jbe@0
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182 int poolnum; /* number of pool for log output */
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jbe@0
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183 struct moonbr_pool *next_pool; /* next entry in linked list starting with 'moonbr_first_pool' */
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jbe@0
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184 struct moonbr_worker *first_worker; /* first worker of pool */
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jbe@0
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185 struct moonbr_worker *last_worker; /* last worker of pool */
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jbe@0
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186 struct moonbr_worker *first_idle_worker; /* first idle worker of pool */
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jbe@0
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187 struct moonbr_worker *last_idle_worker; /* last idle worker of pool */
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jbe@0
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188 int idle_worker_count;
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jbe@0
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189 int unassigned_worker_count;
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jbe@0
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190 int total_worker_count;
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jbe@0
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191 int worker_count_stat; /* only needed for statistics */
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jbe@0
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192 int pre_fork; /* desired minimum number of unassigned workers */
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jbe@0
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193 int min_fork; /* desired minimum number of workers in total */
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jbe@0
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194 int max_fork; /* maximum number of workers */
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jbe@0
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195 struct timeval fork_delay; /* delay after each fork() until a fork may happen again */
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jbe@0
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196 struct timeval fork_wakeup; /* point in time when a fork may happen again (unless a worker terminates before) */
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jbe@0
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197 struct timeval fork_error_delay; /* delay between fork()s when an error during fork or preparation occurred */
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jbe@0
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198 struct timeval fork_error_wakeup; /* point in time when fork may happen again if an error in preparation occurred */
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jbe@0
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199 int use_fork_error_wakeup; /* nonzero = error in preparation occured; gets reset on next fork */
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jbe@0
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200 struct timeval exit_delay; /* delay for terminating excessive workers (unassigned_worker_count > pre_fork) */
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jbe@0
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201 struct timeval exit_wakeup; /* point in time when terminating an excessive worker */
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jbe@0
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202 struct timeval idle_timeout; /* delay before an idle worker is terminated */
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jbe@0
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203 size_t memory_limit; /* maximum bytes of memory that the Lua machine may allocate */
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jbe@0
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204 int listener_count; /* total number of listeners of pool (and size of 'listener' array at end of this struct) */
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jbe@0
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205 struct moonbr_listener *first_idle_listener; /* first listener that is idle (i.e. has no waiting connection) */
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jbe@0
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206 struct moonbr_listener *last_idle_listener; /* last listener that is idle (i.e. has no waiting connection) */
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jbe@0
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207 struct moonbr_listener *first_connected_listener; /* first listener that has a pending connection */
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jbe@0
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208 struct moonbr_listener *last_connected_listener; /* last listener that has a pending connection */
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jbe@0
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209 struct moonbr_listener listener[1]; /* static array of variable(!) size to contain 'listener' structures */
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jbe@0
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210 };
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jbe@0
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211
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jbe@0
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212 /* Enum for 'channel' field of struct moonbr_poll_worker */
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jbe@0
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213 #define MOONBR_POLL_WORKER_CONTROLCHANNEL 1
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jbe@0
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214 #define MOONBR_POLL_WORKER_ERRORCHANNEL 2
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jbe@0
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215
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jbe@0
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216 /* Structure to refer from 'moonbr_poll_worker_fds' entry to worker structure */
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jbe@0
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217 struct moonbr_poll_worker {
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jbe@0
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218 struct moonbr_worker *worker;
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jbe@0
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219 int channel; /* field indicating whether file descriptor is 'controlfd' or 'errorfd' */
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jbe@0
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220 };
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jbe@0
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221
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jbe@0
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222 /* Variable indicating that clean shutdown was requested */
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jbe@0
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223 static int moonbr_shutdown_in_progress = 0;
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jbe@0
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224
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jbe@0
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225
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jbe@0
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226 /*** Macros for Lua registry ***/
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jbe@0
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227
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jbe@0
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228 /* Lightuserdata keys for Lua registry to store 'prepare', 'connect', and 'finish' functions */
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jbe@0
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229 #define moonbr_luakey_prepare_func(pool) ((void *)(intptr_t)(pool) + 0)
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jbe@0
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230 #define moonbr_luakey_connect_func(pool) ((void *)(intptr_t)(pool) + 1)
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jbe@0
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231 #define moonbr_luakey_finish_func(pool) ((void *)(intptr_t)(pool) + 2)
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jbe@0
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232
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jbe@0
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233
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jbe@0
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234 /*** Global variables ***/
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jbe@0
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235
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jbe@0
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236 /* State of process execution */
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jbe@0
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237 static int moonbr_pstate = MOONBR_PSTATE_STARTUP;
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jbe@0
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238
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jbe@0
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239 /* Process ID of the main process */
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jbe@0
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240 static pid_t moonbr_masterpid;
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jbe@0
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241
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jbe@0
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242 /* Condition variables set by the signal handler */
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jbe@0
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243 static volatile sig_atomic_t moonbr_cond_poll = 0;
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jbe@0
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244 static volatile sig_atomic_t moonbr_cond_terminate = 0;
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jbe@0
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245 static volatile sig_atomic_t moonbr_cond_interrupt = 0;
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jbe@0
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246 static volatile sig_atomic_t moonbr_cond_child = 0;
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jbe@0
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247
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jbe@0
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248 /* Socket pair to denote signal delivery when signal handler was called just before poll() */
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jbe@0
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249 static int moonbr_poll_signalfds[2];
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jbe@0
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250 #define moonbr_poll_signalfd_read moonbr_poll_signalfds[0]
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jbe@0
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251 #define moonbr_poll_signalfd_write moonbr_poll_signalfds[1]
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jbe@0
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252
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jbe@0
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253 /* Global variables for pidfile and logging */
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jbe@0
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254 static struct pidfh *moonbr_pidfh = NULL;
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jbe@0
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255 static FILE *moonbr_logfile = NULL;
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jbe@0
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256 static int moonbr_use_syslog = 0;
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jbe@0
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257
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jbe@0
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258 /* First and last entry of linked list of all created pools during initialization */
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jbe@0
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259 static struct moonbr_pool *moonbr_first_pool = NULL;
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jbe@0
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260 static struct moonbr_pool *moonbr_last_pool = NULL;
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jbe@0
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261
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jbe@0
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262 /* Total count of pools */
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jbe@0
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263 static int moonbr_pool_count = 0;
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jbe@0
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264
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jbe@0
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265 /* Set to a nonzero value if dynamic part of 'moonbr_poll_fds' ('moonbr_poll_worker_fds') needs an update */
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jbe@0
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266 static int moonbr_poll_refresh_needed = 0;
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jbe@0
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267
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jbe@0
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268 /* Array passed to poll(), consisting of static part and dynamic part ('moonbr_poll_worker_fds') */
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jbe@0
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269 static struct pollfd *moonbr_poll_fds = NULL; /* the array */
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jbe@0
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270 static int moonbr_poll_fds_bufsize = 0; /* memory allocated for this number of elements */
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jbe@0
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271 static int moonbr_poll_fds_count = 0; /* total number of elements */
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jbe@0
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272 static int moonbr_poll_fds_static_count; /* number of elements in static part */
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jbe@0
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273
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jbe@0
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274 /* Dynamic part of 'moonbr_poll_fds' array */
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jbe@0
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275 #define moonbr_poll_worker_fds (moonbr_poll_fds+moonbr_poll_fds_static_count)
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jbe@0
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276
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jbe@0
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277 /* Additional information for dynamic part of 'moonbr_poll_fds' array */
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jbe@0
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278 struct moonbr_poll_worker *moonbr_poll_workers; /* the array */
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jbe@0
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279 static int moonbr_poll_workers_bufsize = 0; /* memory allocated for this number of elements */
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jbe@0
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280 static int moonbr_poll_worker_count = 0; /* number of elements in array */
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jbe@0
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281
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jbe@0
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282 /* Variable set to nonzero value to disallow further calls of 'listen' function */
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jbe@0
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283 static int moonbr_booted = 0;
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jbe@0
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284
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jbe@0
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285 /* Verbosity settings */
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jbe@0
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286 static int moonbr_debug = 0;
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jbe@0
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287 static int moonbr_stat = 0;
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jbe@0
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288
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jbe@0
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289 /* Memory consumption by Lua machine */
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jbe@0
|
290 static size_t moonbr_memory_usage = 0;
|
|
jbe@0
|
291 static size_t moonbr_memory_limit = 0;
|
|
jbe@0
|
292
|
|
jbe@0
|
293
|
|
jbe@0
|
294 /*** Functions for signal handling ***/
|
|
jbe@0
|
295
|
|
jbe@0
|
296 /* Signal handler for master and child processes */
|
|
jbe@0
|
297 static void moonbr_signal(int sig) {
|
|
jbe@265
|
298 int errno2 = errno; /* backup errno variable */
|
|
jbe@0
|
299 if (getpid() == moonbr_masterpid) {
|
|
jbe@0
|
300 /* master process */
|
|
jbe@0
|
301 switch (sig) {
|
|
jbe@0
|
302 case SIGHUP:
|
|
jbe@0
|
303 case SIGINT:
|
|
jbe@0
|
304 /* fast shutdown requested */
|
|
jbe@0
|
305 moonbr_cond_interrupt = 1;
|
|
jbe@0
|
306 break;
|
|
jbe@0
|
307 case SIGTERM:
|
|
jbe@0
|
308 /* clean shutdown requested */
|
|
jbe@0
|
309 moonbr_cond_terminate = 1;
|
|
jbe@0
|
310 break;
|
|
jbe@0
|
311 case SIGCHLD:
|
|
jbe@0
|
312 /* child process terminated */
|
|
jbe@0
|
313 moonbr_cond_child = 1;
|
|
jbe@0
|
314 break;
|
|
jbe@0
|
315 }
|
|
jbe@0
|
316 if (moonbr_cond_poll) {
|
|
jbe@0
|
317 /* avoid race condition if signal handler is invoked right before poll() */
|
|
jbe@0
|
318 char buf[1] = {0};
|
|
jbe@20
|
319 write(moonbr_poll_signalfd_write, buf, 1);
|
|
jbe@0
|
320 }
|
|
jbe@0
|
321 } else {
|
|
jbe@0
|
322 /* child process forwards certain signals to parent process */
|
|
jbe@0
|
323 switch (sig) {
|
|
jbe@0
|
324 case SIGHUP:
|
|
jbe@0
|
325 case SIGINT:
|
|
jbe@0
|
326 kill(moonbr_masterpid, sig);
|
|
jbe@0
|
327 }
|
|
jbe@0
|
328 }
|
|
jbe@265
|
329 errno = errno2; /* restore errno from backup */
|
|
jbe@0
|
330 }
|
|
jbe@0
|
331
|
|
jbe@0
|
332 /* Initialize signal handling */
|
|
jbe@0
|
333 static void moonbr_signal_init(){
|
|
jbe@0
|
334 moonbr_masterpid = getpid();
|
|
jbe@0
|
335 signal(SIGHUP, moonbr_signal);
|
|
jbe@0
|
336 signal(SIGINT, moonbr_signal);
|
|
jbe@0
|
337 signal(SIGTERM, moonbr_signal);
|
|
jbe@0
|
338 signal(SIGCHLD, moonbr_signal);
|
|
jbe@0
|
339 }
|
|
jbe@0
|
340
|
|
jbe@0
|
341
|
|
jbe@0
|
342 /*** Functions for logging in master process ***/
|
|
jbe@0
|
343
|
|
jbe@0
|
344 /* Logs a pre-formatted message with given syslog() priority */
|
|
jbe@0
|
345 static void moonbr_log_msg(int priority, const char *msg) {
|
|
jbe@0
|
346 if (moonbr_logfile) {
|
|
jbe@0
|
347 /* logging to logfile desired (timestamp is prepended in that case) */
|
|
jbe@0
|
348 time_t now_time = 0;
|
|
jbe@0
|
349 struct tm now_tmstruct;
|
|
jbe@0
|
350 char timestr[MOONBR_LOG_MAXTIMELEN+1];
|
|
jbe@0
|
351 time(&now_time);
|
|
jbe@0
|
352 localtime_r(&now_time, &now_tmstruct);
|
|
jbe@0
|
353 if (!strftime(
|
|
jbe@0
|
354 timestr, MOONBR_LOG_MAXTIMELEN+1, "%Y-%m-%d %H:%M:%S %Z: ", &now_tmstruct
|
|
jbe@0
|
355 )) timestr[0] = 0;
|
|
jbe@0
|
356 fprintf(moonbr_logfile, "%s%s\n", timestr, msg);
|
|
jbe@0
|
357 }
|
|
jbe@0
|
358 if (moonbr_use_syslog) {
|
|
jbe@0
|
359 /* logging through syslog desired */
|
|
jbe@0
|
360 syslog(priority, "%s", msg);
|
|
jbe@0
|
361 }
|
|
jbe@0
|
362 }
|
|
jbe@0
|
363
|
|
jbe@0
|
364 /* Formats a message via vsnprintf() and logs it with given syslog() priority */
|
|
jbe@0
|
365 static void moonbr_log(int priority, const char *message, ...) {
|
|
jbe@0
|
366 char msgbuf[MOONBR_LOG_MAXMSGLEN+1]; /* buffer of static size to store formatted message */
|
|
jbe@0
|
367 int msglen; /* length of full message (may exceed MOONBR_LOG_MAXMSGLEN) */
|
|
jbe@0
|
368 {
|
|
jbe@0
|
369 /* pass variable arguments to vsnprintf() to format message */
|
|
jbe@0
|
370 va_list ap;
|
|
jbe@0
|
371 va_start(ap, message);
|
|
jbe@0
|
372 msglen = vsnprintf(msgbuf, MOONBR_LOG_MAXMSGLEN+1, message, ap);
|
|
jbe@0
|
373 va_end(ap);
|
|
jbe@0
|
374 }
|
|
jbe@0
|
375 {
|
|
jbe@0
|
376 /* split and log message line by line */
|
|
jbe@0
|
377 char *line = msgbuf;
|
|
jbe@0
|
378 while (1) {
|
|
jbe@0
|
379 char *endptr = strchr(line, '\n');
|
|
jbe@0
|
380 if (endptr) {
|
|
jbe@0
|
381 /* terminate string where newline character is found */
|
|
jbe@0
|
382 *endptr = 0;
|
|
jbe@0
|
383 } else if (line != msgbuf && msglen > MOONBR_LOG_MAXMSGLEN) {
|
|
jbe@0
|
384 /* break if line is incomplete and not the first line */
|
|
jbe@0
|
385 break;
|
|
jbe@0
|
386 }
|
|
jbe@0
|
387 moonbr_log_msg(priority, line);
|
|
jbe@0
|
388 if (!endptr) break; /* break if end of formatted message is reached */
|
|
jbe@0
|
389 line = endptr+1; /* otherwise continue with remaining message */
|
|
jbe@0
|
390 }
|
|
jbe@0
|
391 }
|
|
jbe@0
|
392 if (msglen > MOONBR_LOG_MAXMSGLEN) {
|
|
jbe@0
|
393 /* print warning if message was truncated */
|
|
jbe@0
|
394 moonbr_log_msg(priority, "Previous log message has been truncated due to excessive length");
|
|
jbe@0
|
395 }
|
|
jbe@0
|
396 }
|
|
jbe@0
|
397
|
|
jbe@0
|
398
|
|
jbe@0
|
399 /*** Termination function ***/
|
|
jbe@0
|
400
|
|
jbe@0
|
401 /* Kill all child processes, remove PID file (if existent), and exit master process with given exitcode */
|
|
jbe@0
|
402 static void moonbr_terminate(int exitcode) {
|
|
jbe@0
|
403 {
|
|
jbe@0
|
404 struct moonbr_pool *pool;
|
|
jbe@0
|
405 for (pool=moonbr_first_pool; pool; pool=pool->next_pool) {
|
|
jbe@0
|
406 {
|
|
jbe@0
|
407 struct moonbr_worker *worker;
|
|
jbe@0
|
408 for (worker=pool->first_worker; worker; worker=worker->next_worker) {
|
|
jbe@0
|
409 moonbr_log(LOG_INFO, "Sending SIGKILL to child with PID %i", (int)worker->pid);
|
|
jbe@0
|
410 if (kill(worker->pid, SIGKILL)) {
|
|
jbe@0
|
411 moonbr_log(LOG_ERR, "Error while killing child process: %s", strerror(errno));
|
|
jbe@0
|
412 }
|
|
jbe@0
|
413 }
|
|
jbe@0
|
414 }
|
|
jbe@0
|
415 {
|
|
jbe@0
|
416 int i;
|
|
jbe@0
|
417 for (i=0; i<pool->listener_count; i++) {
|
|
jbe@0
|
418 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
419 if (listener->proto == MOONBR_PROTO_LOCAL) {
|
|
jbe@125
|
420 moonbr_log(LOG_INFO, "Unlinking local socket \"%s\"", listener->type_specific.socket.addr.addr_un.sun_path);
|
|
jbe@125
|
421 if (unlink(listener->type_specific.socket.addr.addr_un.sun_path)) {
|
|
jbe@0
|
422 moonbr_log(LOG_ERR, "Error while unlinking local socket: %s", strerror(errno));
|
|
jbe@0
|
423 }
|
|
jbe@0
|
424 }
|
|
jbe@0
|
425 }
|
|
jbe@0
|
426 }
|
|
jbe@0
|
427 }
|
|
jbe@0
|
428 }
|
|
jbe@0
|
429 moonbr_log(exitcode ? LOG_ERR : LOG_NOTICE, "Terminating with exit code %i", exitcode);
|
|
jbe@0
|
430 if (moonbr_pidfh && pidfile_remove(moonbr_pidfh)) {
|
|
jbe@0
|
431 moonbr_log(LOG_ERR, "Error while removing PID file: %s", strerror(errno));
|
|
jbe@0
|
432 }
|
|
jbe@0
|
433 exit(exitcode);
|
|
jbe@0
|
434 }
|
|
jbe@0
|
435
|
|
jbe@0
|
436 /* Terminate with either MOONBR_EXITCODE_STARTUPERROR or MOONBR_EXITCODE_RUNTIMEERROR */
|
|
jbe@0
|
437 #define moonbr_terminate_error() \
|
|
jbe@0
|
438 moonbr_terminate( \
|
|
jbe@0
|
439 moonbr_pstate == MOONBR_PSTATE_STARTUP ? \
|
|
jbe@0
|
440 MOONBR_EXITCODE_STARTUPERROR : \
|
|
jbe@0
|
441 MOONBR_EXITCODE_RUNTIMEERROR \
|
|
jbe@0
|
442 )
|
|
jbe@0
|
443
|
|
jbe@0
|
444
|
|
jbe@0
|
445 /*** Helper functions ***/
|
|
jbe@0
|
446
|
|
jbe@0
|
447 /* Fills a 'struct timeval' structure with the current time (using CLOCK_MONOTONIC) */
|
|
jbe@0
|
448 static void moonbr_now(struct timeval *now) {
|
|
jbe@0
|
449 struct timespec ts = {0, };
|
|
jbe@0
|
450 if (clock_gettime(CLOCK_MONOTONIC, &ts)) {
|
|
jbe@0
|
451 moonbr_log(LOG_CRIT, "Error in clock_gettime() call: %s", strerror(errno));
|
|
jbe@0
|
452 moonbr_terminate_error();
|
|
jbe@0
|
453 }
|
|
jbe@0
|
454 *now = (struct timeval){ .tv_sec = ts.tv_sec, .tv_usec = ts.tv_nsec / 1000 };
|
|
jbe@0
|
455 }
|
|
jbe@0
|
456
|
|
jbe@0
|
457 /* Formats a 'struct timeval' value (not thread-safe) */
|
|
jbe@0
|
458 static char *moonbr_format_timeval(struct timeval *t) {
|
|
jbe@0
|
459 static char buf[32];
|
|
jbe@0
|
460 snprintf(buf, 32, "%ji.%06ji seconds", (intmax_t)t->tv_sec, (intmax_t)t->tv_usec);
|
|
jbe@0
|
461 return buf;
|
|
jbe@0
|
462 }
|
|
jbe@0
|
463
|
|
jbe@0
|
464
|
|
jbe@0
|
465 /*** Functions for pool creation and startup ***/
|
|
jbe@0
|
466
|
|
jbe@0
|
467 /* Creates a 'struct moonbr_pool' structure with a given number of listeners */
|
|
jbe@0
|
468 static struct moonbr_pool *moonbr_create_pool(int listener_count) {
|
|
jbe@0
|
469 struct moonbr_pool *pool;
|
|
jbe@0
|
470 pool = calloc(1,
|
|
jbe@0
|
471 sizeof(struct moonbr_pool) + /* size of 'struct moonbr_pool' with one listener */
|
|
jbe@0
|
472 (listener_count-1) * sizeof(struct moonbr_listener) /* size of extra listeners */
|
|
jbe@0
|
473 );
|
|
jbe@0
|
474 if (!pool) {
|
|
jbe@0
|
475 moonbr_log(LOG_CRIT, "Memory allocation error");
|
|
jbe@0
|
476 moonbr_terminate_error();
|
|
jbe@0
|
477 }
|
|
jbe@0
|
478 pool->listener_count = listener_count;
|
|
jbe@0
|
479 {
|
|
jbe@0
|
480 /* initialization of listeners */
|
|
jbe@0
|
481 int i;
|
|
jbe@0
|
482 for (i=0; i<listener_count; i++) {
|
|
jbe@0
|
483 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
484 listener->pool = pool;
|
|
jbe@0
|
485 listener->listenfd = -1;
|
|
jbe@0
|
486 listener->pollidx = -1;
|
|
jbe@0
|
487 }
|
|
jbe@0
|
488 }
|
|
jbe@0
|
489 return pool;
|
|
jbe@0
|
490 }
|
|
jbe@0
|
491
|
|
jbe@0
|
492 /* Destroys a 'struct moonbr_pool' structure before it has been started */
|
|
jbe@0
|
493 static void moonbr_destroy_pool(struct moonbr_pool *pool) {
|
|
jbe@0
|
494 int i;
|
|
jbe@0
|
495 for (i=0; i<pool->listener_count; i++) {
|
|
jbe@0
|
496 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
497 if (
|
|
jbe@0
|
498 listener->proto == MOONBR_PROTO_INTERVAL &&
|
|
jbe@125
|
499 listener->type_specific.interval.name
|
|
jbe@0
|
500 ) {
|
|
jbe@125
|
501 free(listener->type_specific.interval.name);
|
|
jbe@0
|
502 }
|
|
jbe@0
|
503 }
|
|
jbe@0
|
504 free(pool);
|
|
jbe@0
|
505 }
|
|
jbe@0
|
506
|
|
jbe@0
|
507 /* Starts a all listeners in a pool */
|
|
jbe@0
|
508 static int moonbr_start_pool(struct moonbr_pool *pool) {
|
|
jbe@0
|
509 moonbr_log(LOG_INFO, "Creating pool", pool->poolnum);
|
|
jbe@0
|
510 {
|
|
jbe@0
|
511 int i;
|
|
jbe@0
|
512 for (i=0; i<pool->listener_count; i++) {
|
|
jbe@0
|
513 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
514 switch (listener->proto) {
|
|
jbe@0
|
515 case MOONBR_PROTO_INTERVAL:
|
|
jbe@274
|
516 if (listener->type_specific.interval.main) {
|
|
jbe@274
|
517 /* nothing to do here: starting main thread is performed in moonbr_run() function */
|
|
jbe@274
|
518 if (!listener->type_specific.interval.name) {
|
|
jbe@274
|
519 moonbr_log(LOG_INFO, "Adding unnamed main thread");
|
|
jbe@274
|
520 } else {
|
|
jbe@274
|
521 moonbr_log(LOG_INFO, "Adding main thread \"%s\"", listener->type_specific.interval.name);
|
|
jbe@274
|
522 }
|
|
jbe@0
|
523 } else {
|
|
jbe@274
|
524 /* nothing to do here: starting intervals is performed in moonbr_run() function */
|
|
jbe@274
|
525 if (!listener->type_specific.interval.name) {
|
|
jbe@274
|
526 moonbr_log(LOG_INFO, "Adding unnamed interval listener");
|
|
jbe@274
|
527 } else {
|
|
jbe@274
|
528 moonbr_log(LOG_INFO, "Adding interval listener \"%s\"", listener->type_specific.interval.name);
|
|
jbe@274
|
529 }
|
|
jbe@0
|
530 }
|
|
jbe@0
|
531 break;
|
|
jbe@0
|
532 case MOONBR_PROTO_LOCAL:
|
|
jbe@125
|
533 moonbr_log(LOG_INFO, "Adding local socket listener for path \"%s\"", listener->type_specific.socket.addr.addr_un.sun_path);
|
|
jbe@125
|
534 listener->listenfd = socket(PF_LOCAL, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
|
|
jbe@125
|
535 if (listener->listenfd == -1) goto moonbr_start_pool_error;
|
|
jbe@125
|
536 if (!unlink(listener->type_specific.socket.addr.addr_un.sun_path)) {
|
|
jbe@125
|
537 moonbr_log(LOG_WARNING, "Unlinked named socket \"%s\" prior to listening", listener->type_specific.socket.addr.addr_un.sun_path);
|
|
jbe@125
|
538 } else {
|
|
jbe@125
|
539 if (errno != ENOENT) {
|
|
jbe@125
|
540 moonbr_log(LOG_ERR, "Could not unlink named socket \"%s\" prior to listening: %s", listener->type_specific.socket.addr.addr_un.sun_path, strerror(errno));
|
|
jbe@125
|
541 }
|
|
jbe@125
|
542 }
|
|
jbe@125
|
543 if (
|
|
jbe@125
|
544 bind(listener->listenfd, &listener->type_specific.socket.addr.addr_abstract, listener->type_specific.socket.addrlen)
|
|
jbe@125
|
545 ) goto moonbr_start_pool_error;
|
|
jbe@125
|
546 if (listen(listener->listenfd, MOONBR_LISTEN_BACKLOG)) goto moonbr_start_pool_error;
|
|
jbe@125
|
547 break;
|
|
jbe@125
|
548 case MOONBR_PROTO_TCP:
|
|
jbe@125
|
549 moonbr_log(LOG_INFO, "Adding TCP listener on interface \"%s\", port %i", listener->proto_specific.tcp.ip, listener->proto_specific.tcp.port);
|
|
jbe@134
|
550 listener->listenfd = socket(listener->type_specific.socket.addr.addr_abstract.sa_family, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0); /* NOTE: not correctly using PF_* but AF_* constants here */
|
|
jbe@125
|
551 if (listener->listenfd == -1) goto moonbr_start_pool_error;
|
|
jbe@0
|
552 {
|
|
jbe@125
|
553 /* avoid "Address already in use" error when restarting service */
|
|
jbe@125
|
554 static const int reuseval = 1;
|
|
jbe@125
|
555 if (setsockopt(
|
|
jbe@125
|
556 listener->listenfd, SOL_SOCKET, SO_REUSEADDR, &reuseval, sizeof(reuseval)
|
|
jbe@125
|
557 )) goto moonbr_start_pool_error;
|
|
jbe@0
|
558 }
|
|
jbe@0
|
559 {
|
|
jbe@125
|
560 /* default to send TCP RST when process terminates unexpectedly */
|
|
jbe@125
|
561 static const struct linger lingerval = {
|
|
jbe@125
|
562 .l_onoff = 1,
|
|
jbe@125
|
563 .l_linger = 0
|
|
jbe@0
|
564 };
|
|
jbe@125
|
565 if (setsockopt(
|
|
jbe@125
|
566 listener->listenfd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval)
|
|
jbe@125
|
567 )) goto moonbr_start_pool_error;
|
|
jbe@0
|
568 }
|
|
jbe@125
|
569 if (
|
|
jbe@125
|
570 bind(listener->listenfd, &listener->type_specific.socket.addr.addr_abstract, listener->type_specific.socket.addrlen)
|
|
jbe@125
|
571 ) goto moonbr_start_pool_error;
|
|
jbe@125
|
572 if (listen(listener->listenfd, MOONBR_LISTEN_BACKLOG)) goto moonbr_start_pool_error;
|
|
jbe@0
|
573 break;
|
|
jbe@0
|
574 default:
|
|
jbe@0
|
575 moonbr_log(LOG_CRIT, "Internal error (should not happen): Unexpected value in listener.proto field");
|
|
jbe@0
|
576 moonbr_terminate_error();
|
|
jbe@0
|
577 }
|
|
jbe@0
|
578 }
|
|
jbe@0
|
579 goto moonbr_start_pool_ok;
|
|
jbe@0
|
580 moonbr_start_pool_error:
|
|
jbe@0
|
581 {
|
|
jbe@0
|
582 int j = i;
|
|
jbe@0
|
583 int errno2 = errno;
|
|
jbe@0
|
584 for (; i>=0; i--) {
|
|
jbe@0
|
585 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
586 if (listener->listenfd != -1) close(listener->listenfd);
|
|
jbe@0
|
587 }
|
|
jbe@0
|
588 errno = errno2;
|
|
jbe@0
|
589 return j;
|
|
jbe@0
|
590 }
|
|
jbe@0
|
591 }
|
|
jbe@0
|
592 moonbr_start_pool_ok:
|
|
jbe@0
|
593 pool->poolnum = ++moonbr_pool_count;
|
|
jbe@0
|
594 moonbr_log(LOG_INFO, "Pool #%i created", pool->poolnum);
|
|
jbe@0
|
595 if (moonbr_last_pool) moonbr_last_pool->next_pool = pool;
|
|
jbe@0
|
596 else moonbr_first_pool = pool;
|
|
jbe@0
|
597 moonbr_last_pool = pool;
|
|
jbe@0
|
598 return -1;
|
|
jbe@0
|
599 }
|
|
jbe@0
|
600
|
|
jbe@0
|
601
|
|
jbe@0
|
602 /*** Function to send data and a file descriptor to child process */
|
|
jbe@0
|
603
|
|
jbe@0
|
604 /* Sends control message of one bye plus optional file descriptor plus optional pointer to child process */
|
|
jbe@0
|
605 static void moonbr_send_control_message(struct moonbr_worker *worker, char status, int fd, void *ptr) {
|
|
jbe@0
|
606 {
|
|
jbe@0
|
607 struct iovec iovector = { .iov_base = &status, .iov_len = 1 }; /* carrying status byte */
|
|
jbe@0
|
608 char control_message_buffer[CMSG_SPACE(sizeof(int))] = {0, }; /* used to transfer file descriptor */
|
|
jbe@0
|
609 struct msghdr message = { .msg_iov = &iovector, .msg_iovlen = 1 }; /* data structure passed to sendmsg() call */
|
|
jbe@0
|
610 if (moonbr_debug) {
|
|
jbe@0
|
611 if (fd == -1) {
|
|
jbe@0
|
612 moonbr_log(LOG_DEBUG, "Sending control message \"%c\" to child process in pool #%i (PID %i)", (int)status, worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
613 } else {
|
|
jbe@0
|
614 moonbr_log(LOG_DEBUG, "Sending control message \"%c\" with file descriptor #%i to child process in pool #%i (PID %i)", (int)status, fd, worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
615 }
|
|
jbe@0
|
616 }
|
|
jbe@0
|
617 if (fd != -1) {
|
|
jbe@0
|
618 /* attach control message with file descriptor */
|
|
jbe@0
|
619 message.msg_control = control_message_buffer;
|
|
jbe@0
|
620 message.msg_controllen = CMSG_SPACE(sizeof(int));
|
|
jbe@0
|
621 {
|
|
jbe@0
|
622 struct cmsghdr *control_message = CMSG_FIRSTHDR(&message);
|
|
jbe@0
|
623 control_message->cmsg_level = SOL_SOCKET;
|
|
jbe@0
|
624 control_message->cmsg_type = SCM_RIGHTS;
|
|
jbe@0
|
625 control_message->cmsg_len = CMSG_LEN(sizeof(int));
|
|
jbe@18
|
626 memcpy(CMSG_DATA(control_message), &fd, sizeof(int));
|
|
jbe@0
|
627 }
|
|
jbe@0
|
628 }
|
|
jbe@0
|
629 while (sendmsg(worker->controlfd, &message, MSG_NOSIGNAL) < 0) {
|
|
jbe@0
|
630 if (errno == EPIPE) {
|
|
jbe@0
|
631 moonbr_log(LOG_ERR, "Error while communicating with idle child process in pool #%i (PID %i): %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
632 return; /* do not close socket; socket is closed when reading from it */
|
|
jbe@0
|
633 }
|
|
jbe@0
|
634 if (errno != EINTR) {
|
|
jbe@0
|
635 moonbr_log(LOG_CRIT, "Unexpected error while communicating with idle child process in pool #%i (PID %i): %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
636 moonbr_terminate_error();
|
|
jbe@0
|
637 }
|
|
jbe@0
|
638 }
|
|
jbe@0
|
639 }
|
|
jbe@0
|
640 if (ptr) {
|
|
jbe@0
|
641 char buf[sizeof(void *)];
|
|
jbe@0
|
642 char *pos = buf;
|
|
jbe@0
|
643 int len = sizeof(void *);
|
|
jbe@0
|
644 ssize_t written;
|
|
jbe@0
|
645 if (moonbr_debug) {
|
|
jbe@0
|
646 moonbr_log(LOG_DEBUG, "Sending memory pointer to child process in pool #%i (PID %i)", (int)status, worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
647 }
|
|
jbe@18
|
648 memcpy(buf, &ptr, sizeof(void *));
|
|
jbe@0
|
649 while (len) {
|
|
jbe@0
|
650 written = send(worker->controlfd, pos, len, MSG_NOSIGNAL);
|
|
jbe@0
|
651 if (written > 0) {
|
|
jbe@0
|
652 pos += written;
|
|
jbe@0
|
653 len -= written;
|
|
jbe@0
|
654 } else if (errno == EPIPE) {
|
|
jbe@0
|
655 moonbr_log(LOG_ERR, "Error while communicating with idle child process in pool #%i (PID %i): %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
656 return; /* do not close socket; socket is closed when reading from it */
|
|
jbe@0
|
657 } else if (errno != EINTR) {
|
|
jbe@0
|
658 moonbr_log(LOG_CRIT, "Unexpected error while communicating with idle child process in pool #%i (PID %i): %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
659 moonbr_terminate_error();
|
|
jbe@0
|
660 }
|
|
jbe@0
|
661 }
|
|
jbe@0
|
662 }
|
|
jbe@0
|
663 }
|
|
jbe@0
|
664
|
|
jbe@0
|
665
|
|
jbe@0
|
666 /*** Functions running in child process ***/
|
|
jbe@0
|
667
|
|
jbe@0
|
668 /* Logs an error in child process */
|
|
jbe@0
|
669 static void moonbr_child_log(const char *message) {
|
|
jbe@0
|
670 fprintf(stderr, "%s\n", message);
|
|
jbe@0
|
671 }
|
|
jbe@0
|
672
|
|
jbe@0
|
673 /* Logs a fatal error in child process and terminates process with error status */
|
|
jbe@0
|
674 static void moonbr_child_log_fatal(const char *message) {
|
|
jbe@0
|
675 moonbr_child_log(message);
|
|
jbe@0
|
676 exit(1);
|
|
jbe@0
|
677 }
|
|
jbe@0
|
678
|
|
jbe@0
|
679 /* Logs an error in child process while appending error string for global errno variable */
|
|
jbe@0
|
680 static void moonbr_child_log_errno(const char *message) {
|
|
jbe@213
|
681 char errmsg[MOONBR_MAXSTRERRORLEN] = MOONBR_STRERROR_R_MSG;
|
|
jbe@20
|
682 strerror_r(errno, errmsg, MOONBR_MAXSTRERRORLEN); /* use thread-safe call in case child created threads */
|
|
jbe@0
|
683 fprintf(stderr, "%s: %s\n", message, errmsg);
|
|
jbe@0
|
684 }
|
|
jbe@0
|
685
|
|
jbe@0
|
686 /* Logs a fatal error in child process while appending error string for errno and terminating process */
|
|
jbe@0
|
687 static void moonbr_child_log_errno_fatal(const char *message) {
|
|
jbe@0
|
688 moonbr_child_log_errno(message);
|
|
jbe@0
|
689 exit(1);
|
|
jbe@0
|
690 }
|
|
jbe@0
|
691
|
|
jbe@0
|
692 /* Receives a control message consisting of one character plus an optional file descriptor from parent process */
|
|
jbe@0
|
693 static void moonbr_child_receive_control_message(int socketfd, char *status, int *fd) {
|
|
jbe@0
|
694 struct iovec iovector = { .iov_base = status, .iov_len = 1 }; /* reference to status byte variable */
|
|
jbe@0
|
695 char control_message_buffer[CMSG_SPACE(sizeof(int))] = {0, }; /* used to receive file descriptor */
|
|
jbe@0
|
696 struct msghdr message = { /* data structure passed to recvmsg() call */
|
|
jbe@0
|
697 .msg_iov = &iovector,
|
|
jbe@0
|
698 .msg_iovlen = 1,
|
|
jbe@0
|
699 .msg_control = control_message_buffer,
|
|
jbe@0
|
700 .msg_controllen = CMSG_SPACE(sizeof(int))
|
|
jbe@0
|
701 };
|
|
jbe@0
|
702 {
|
|
jbe@0
|
703 int received;
|
|
jbe@0
|
704 while ((received = recvmsg(socketfd, &message, MSG_CMSG_CLOEXEC)) < 0) {
|
|
jbe@0
|
705 if (errno != EINTR) {
|
|
jbe@0
|
706 moonbr_child_log_errno_fatal("Error while trying to receive connection socket from parent process");
|
|
jbe@0
|
707 }
|
|
jbe@0
|
708 }
|
|
jbe@0
|
709 if (!received) {
|
|
jbe@0
|
710 moonbr_child_log_fatal("Unexpected EOF while trying to receive connection socket from parent process");
|
|
jbe@0
|
711 }
|
|
jbe@0
|
712 }
|
|
jbe@0
|
713 {
|
|
jbe@0
|
714 struct cmsghdr *control_message = CMSG_FIRSTHDR(&message);
|
|
jbe@0
|
715 if (control_message) {
|
|
jbe@0
|
716 if (control_message->cmsg_level != SOL_SOCKET) {
|
|
jbe@0
|
717 moonbr_child_log_fatal("Received control message with cmsg_level not equal to SOL_SOCKET");
|
|
jbe@0
|
718 }
|
|
jbe@0
|
719 if (control_message->cmsg_type != SCM_RIGHTS) {
|
|
jbe@0
|
720 moonbr_child_log_fatal("Received control message with cmsg_type not equal to SCM_RIGHTS");
|
|
jbe@0
|
721 }
|
|
jbe@18
|
722 memcpy(fd, CMSG_DATA(control_message), sizeof(int));
|
|
jbe@0
|
723 } else {
|
|
jbe@0
|
724 *fd = -1;
|
|
jbe@0
|
725 }
|
|
jbe@0
|
726 }
|
|
jbe@0
|
727 }
|
|
jbe@0
|
728
|
|
jbe@0
|
729 /* Receives a pointer from parent process */
|
|
jbe@0
|
730 static void *moonbr_child_receive_pointer(int socketfd) {
|
|
jbe@0
|
731 char buf[sizeof(void *)];
|
|
jbe@0
|
732 char *pos = buf;
|
|
jbe@0
|
733 int len = sizeof(void *);
|
|
jbe@0
|
734 ssize_t bytes_read;
|
|
jbe@0
|
735 while (len) {
|
|
jbe@0
|
736 bytes_read = recv(socketfd, pos, len, 0);
|
|
jbe@0
|
737 if (bytes_read > 0) {
|
|
jbe@0
|
738 pos += bytes_read;
|
|
jbe@0
|
739 len -= bytes_read;
|
|
jbe@0
|
740 } else if (!bytes_read) {
|
|
jbe@0
|
741 moonbr_child_log_fatal("Unexpected EOF while trying to receive memory pointer from parent process");
|
|
jbe@0
|
742 } else if (errno != EINTR) {
|
|
jbe@0
|
743 moonbr_child_log_errno_fatal("Error while trying to receive memory pointer from parent process");
|
|
jbe@0
|
744 }
|
|
jbe@0
|
745 }
|
|
jbe@18
|
746 {
|
|
jbe@18
|
747 void *ptr; /* avoid breaking strict-aliasing rules */
|
|
jbe@18
|
748 memcpy(&ptr, buf, sizeof(void *));
|
|
jbe@18
|
749 return ptr;
|
|
jbe@18
|
750 }
|
|
jbe@0
|
751 }
|
|
jbe@0
|
752
|
|
jbe@0
|
753 /* Main function of child process to be called after fork() and file descriptor rearrangement */
|
|
jbe@0
|
754 void moonbr_child_run(struct moonbr_pool *pool, lua_State *L) {
|
|
jbe@0
|
755 char controlmsg;
|
|
jbe@88
|
756 int fd;
|
|
jbe@0
|
757 struct itimerval notimer = { { 0, }, { 0, } };
|
|
jbe@0
|
758 lua_rawgetp(L, LUA_REGISTRYINDEX, moonbr_luakey_prepare_func(pool));
|
|
jbe@0
|
759 if (lua_isnil(L, -1)) lua_pop(L, 1);
|
|
jbe@0
|
760 else if (lua_pcall(L, 0, 0, 1)) {
|
|
jbe@0
|
761 fprintf(stderr, "Error in \"prepare\" function: %s\n", lua_tostring(L, -1));
|
|
jbe@0
|
762 exit(1);
|
|
jbe@0
|
763 }
|
|
jbe@0
|
764 while (1) {
|
|
jbe@0
|
765 struct moonbr_listener *listener;
|
|
jbe@0
|
766 if (setitimer(ITIMER_REAL, ¬imer, NULL)) {
|
|
jbe@0
|
767 moonbr_child_log_errno_fatal("Could not reset ITIMER_REAL via setitimer()");
|
|
jbe@0
|
768 }
|
|
jbe@0
|
769 controlmsg = MOONBR_STATUS_IDLE;
|
|
jbe@0
|
770 if (write(MOONBR_FD_CONTROL, &controlmsg, 1) <= 0) {
|
|
jbe@0
|
771 moonbr_child_log_errno_fatal("Error while sending ready message to parent process");
|
|
jbe@0
|
772 }
|
|
jbe@88
|
773 moonbr_child_receive_control_message(MOONBR_FD_CONTROL, &controlmsg, &fd);
|
|
jbe@0
|
774 if (!(
|
|
jbe@124
|
775 (controlmsg == MOONBR_COMMAND_TERMINATE && fd == -1) ||
|
|
jbe@124
|
776 (controlmsg == MOONBR_COMMAND_CONNECT)
|
|
jbe@0
|
777 )) {
|
|
jbe@0
|
778 moonbr_child_log_fatal("Received illegal control message from parent process");
|
|
jbe@0
|
779 }
|
|
jbe@0
|
780 if (controlmsg == MOONBR_COMMAND_TERMINATE) break;
|
|
jbe@0
|
781 listener = moonbr_child_receive_pointer(MOONBR_FD_CONTROL);
|
|
jbe@127
|
782 if (
|
|
jbe@127
|
783 listener->proto != MOONBR_PROTO_LOCAL &&
|
|
jbe@127
|
784 listener->proto != MOONBR_PROTO_TCP &&
|
|
jbe@127
|
785 fd >= 0
|
|
jbe@127
|
786 ) {
|
|
jbe@124
|
787 moonbr_child_log_fatal("Received unexpected file descriptor from parent process");
|
|
jbe@127
|
788 } else if (
|
|
jbe@274
|
789 listener->proto != MOONBR_PROTO_INTERVAL && fd < 0
|
|
jbe@127
|
790 ) {
|
|
jbe@124
|
791 moonbr_child_log_fatal("Missing file descriptor from parent process");
|
|
jbe@124
|
792 }
|
|
jbe@119
|
793 if (fd >= 0) moonbr_io_pushhandle(L, fd);
|
|
jbe@0
|
794 lua_rawgetp(L, LUA_REGISTRYINDEX, moonbr_luakey_connect_func(pool));
|
|
jbe@119
|
795 if (fd < 0) {
|
|
jbe@0
|
796 lua_newtable(L);
|
|
jbe@274
|
797 if (listener->proto == MOONBR_PROTO_INTERVAL) {
|
|
jbe@131
|
798 lua_pushstring(L,
|
|
jbe@131
|
799 listener->type_specific.interval.name ?
|
|
jbe@131
|
800 listener->type_specific.interval.name : ""
|
|
jbe@131
|
801 );
|
|
jbe@274
|
802 if (listener->type_specific.interval.main) {
|
|
jbe@274
|
803 lua_setfield(L, -2, "main");
|
|
jbe@274
|
804 } else {
|
|
jbe@274
|
805 lua_setfield(L, -2, "interval");
|
|
jbe@274
|
806 }
|
|
jbe@131
|
807 }
|
|
jbe@0
|
808 } else {
|
|
jbe@88
|
809 lua_pushvalue(L, -2);
|
|
jbe@0
|
810 }
|
|
jbe@0
|
811 if (lua_pcall(L, 1, 1, 1)) {
|
|
jbe@0
|
812 fprintf(stderr, "Error in \"connect\" function: %s\n", lua_tostring(L, -1));
|
|
jbe@0
|
813 exit(1);
|
|
jbe@0
|
814 }
|
|
jbe@119
|
815 if (fd >= 0) moonbr_io_closehandle(L, -2, 0); /* attemt clean close */
|
|
jbe@0
|
816 if (lua_type(L, -1) != LUA_TBOOLEAN || !lua_toboolean(L, -1)) break;
|
|
jbe@0
|
817 #ifdef MOONBR_LUA_PANIC_BUG_WORKAROUND
|
|
jbe@0
|
818 lua_settop(L, 2);
|
|
jbe@0
|
819 #else
|
|
jbe@0
|
820 lua_settop(L, 1);
|
|
jbe@0
|
821 #endif
|
|
jbe@0
|
822 }
|
|
jbe@0
|
823 controlmsg = MOONBR_STATUS_GOODBYE;
|
|
jbe@0
|
824 if (write(MOONBR_FD_CONTROL, &controlmsg, 1) <= 0) {
|
|
jbe@0
|
825 moonbr_child_log_errno_fatal("Error while sending goodbye message to parent process");
|
|
jbe@0
|
826 }
|
|
jbe@0
|
827 if (close(MOONBR_FD_CONTROL) && errno != EINTR) {
|
|
jbe@0
|
828 moonbr_child_log_errno("Error while closing control socket");
|
|
jbe@0
|
829 }
|
|
jbe@0
|
830 lua_rawgetp(L, LUA_REGISTRYINDEX, moonbr_luakey_finish_func(pool));
|
|
jbe@0
|
831 if (lua_isnil(L, -1)) lua_pop(L, 1);
|
|
jbe@0
|
832 else if (lua_pcall(L, 0, 0, 1)) {
|
|
jbe@0
|
833 fprintf(stderr, "Error in \"finish\" function: %s\n", lua_tostring(L, -1));
|
|
jbe@0
|
834 exit(1);
|
|
jbe@0
|
835 }
|
|
jbe@0
|
836 lua_close(L);
|
|
jbe@0
|
837 exit(0);
|
|
jbe@0
|
838 }
|
|
jbe@0
|
839
|
|
jbe@0
|
840
|
|
jbe@0
|
841 /*** Functions to spawn child process ***/
|
|
jbe@0
|
842
|
|
jbe@0
|
843 /* Helper function to send an error message to a file descriptor (not needing a file stream) */
|
|
jbe@0
|
844 static void moonbr_child_emergency_print(int fd, char *message) {
|
|
jbe@0
|
845 size_t len = strlen(message);
|
|
jbe@0
|
846 ssize_t written;
|
|
jbe@0
|
847 while (len) {
|
|
jbe@0
|
848 written = write(fd, message, len);
|
|
jbe@0
|
849 if (written > 0) {
|
|
jbe@0
|
850 message += written;
|
|
jbe@0
|
851 len -= written;
|
|
jbe@0
|
852 } else {
|
|
jbe@0
|
853 if (written != -1 || errno != EINTR) break;
|
|
jbe@0
|
854 }
|
|
jbe@0
|
855 }
|
|
jbe@0
|
856 }
|
|
jbe@0
|
857
|
|
jbe@0
|
858 /* Helper function to send an error message plus a text for errno to a file descriptor and terminate the process */
|
|
jbe@0
|
859 static void moonbr_child_emergency_error(int fd, char *message) {
|
|
jbe@0
|
860 int errno2 = errno;
|
|
jbe@0
|
861 moonbr_child_emergency_print(fd, message);
|
|
jbe@0
|
862 moonbr_child_emergency_print(fd, ": ");
|
|
jbe@0
|
863 moonbr_child_emergency_print(fd, strerror(errno2));
|
|
jbe@0
|
864 moonbr_child_emergency_print(fd, "\n");
|
|
jbe@0
|
865 exit(1);
|
|
jbe@0
|
866 }
|
|
jbe@0
|
867
|
|
jbe@0
|
868 /* Creates a child process and (in case of success) registers it in the 'struct moonbr_pool' structure */
|
|
jbe@0
|
869 static int moonbr_create_worker(struct moonbr_pool *pool, lua_State *L) {
|
|
jbe@0
|
870 struct moonbr_worker *worker;
|
|
jbe@0
|
871 worker = calloc(1, sizeof(struct moonbr_worker));
|
|
jbe@0
|
872 if (!worker) {
|
|
jbe@0
|
873 moonbr_log(LOG_CRIT, "Memory allocation error");
|
|
jbe@0
|
874 return -1;
|
|
jbe@0
|
875 }
|
|
jbe@0
|
876 worker->pool = pool;
|
|
jbe@0
|
877 {
|
|
jbe@0
|
878 int controlfds[2];
|
|
jbe@0
|
879 int errorfds[2];
|
|
jbe@0
|
880 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, controlfds)) {
|
|
jbe@0
|
881 moonbr_log(LOG_ERR, "Could not create control socket pair for communcation with child process: %s", strerror(errno));
|
|
jbe@0
|
882 free(worker);
|
|
jbe@0
|
883 return -1;
|
|
jbe@0
|
884 }
|
|
jbe@0
|
885 if (socketpair(PF_LOCAL, SOCK_STREAM | SOCK_CLOEXEC, 0, errorfds)) {
|
|
jbe@0
|
886 moonbr_log(LOG_ERR, "Could not create socket pair to redirect stderr of child process: %s", strerror(errno));
|
|
jbe@0
|
887 close(controlfds[0]);
|
|
jbe@0
|
888 close(controlfds[1]);
|
|
jbe@0
|
889 free(worker);
|
|
jbe@0
|
890 return -1;
|
|
jbe@0
|
891 }
|
|
jbe@0
|
892 if (moonbr_logfile && fflush(moonbr_logfile)) {
|
|
jbe@0
|
893 moonbr_log(LOG_CRIT, "Could not flush log file prior to forking: %s", strerror(errno));
|
|
jbe@0
|
894 moonbr_terminate_error();
|
|
jbe@0
|
895 }
|
|
jbe@0
|
896 worker->pid = fork();
|
|
jbe@0
|
897 if (worker->pid == -1) {
|
|
jbe@0
|
898 moonbr_log(LOG_ERR, "Could not fork: %s", strerror(errno));
|
|
jbe@0
|
899 close(controlfds[0]);
|
|
jbe@0
|
900 close(controlfds[1]);
|
|
jbe@0
|
901 close(errorfds[0]);
|
|
jbe@0
|
902 close(errorfds[1]);
|
|
jbe@0
|
903 free(worker);
|
|
jbe@0
|
904 return -1;
|
|
jbe@0
|
905 } else if (!worker->pid) {
|
|
jbe@0
|
906 moonbr_pstate = MOONBR_PSTATE_FORKED;
|
|
jbe@0
|
907 #ifdef MOONBR_LUA_PANIC_BUG_WORKAROUND
|
|
jbe@0
|
908 lua_pushliteral(L, "Failed to pass error message due to bug in Lua panic handler (hint: not enough memory?)");
|
|
jbe@0
|
909 #endif
|
|
jbe@0
|
910 moonbr_memory_limit = pool->memory_limit;
|
|
jbe@0
|
911 if (moonbr_pidfh && pidfile_close(moonbr_pidfh)) {
|
|
jbe@0
|
912 moonbr_child_emergency_error(errorfds[1], "Could not close PID file in forked child process");
|
|
jbe@0
|
913 }
|
|
jbe@0
|
914 if (moonbr_logfile && moonbr_logfile != stderr && fclose(moonbr_logfile)) {
|
|
jbe@0
|
915 moonbr_child_emergency_error(errorfds[1], "Could not close log file in forked child process");
|
|
jbe@0
|
916 }
|
|
jbe@0
|
917 if (dup2(errorfds[1], MOONBR_FD_STDERR) == -1) {
|
|
jbe@0
|
918 moonbr_child_emergency_error(errorfds[1], "Could not duplicate socket to stderr file descriptor");
|
|
jbe@0
|
919 }
|
|
jbe@0
|
920 if (dup2(controlfds[1], MOONBR_FD_CONTROL) == -1) {
|
|
jbe@0
|
921 moonbr_child_emergency_error(errorfds[1], "Could not duplicate control socket");
|
|
jbe@0
|
922 }
|
|
jbe@0
|
923 closefrom(MOONBR_FD_END);
|
|
jbe@0
|
924 moonbr_child_run(pool, L);
|
|
jbe@0
|
925 }
|
|
jbe@0
|
926 if (moonbr_stat) {
|
|
jbe@0
|
927 moonbr_log(LOG_INFO, "Created new worker in pool #%i with PID %i", worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
928 }
|
|
jbe@0
|
929 worker->controlfd = controlfds[0];
|
|
jbe@0
|
930 worker->errorfd = errorfds[0];
|
|
jbe@0
|
931 if (close(controlfds[1]) && errno != EINTR) {
|
|
jbe@0
|
932 moonbr_log(LOG_CRIT, "Could not close opposite end of control file descriptor after forking");
|
|
jbe@0
|
933 moonbr_terminate_error();
|
|
jbe@0
|
934 }
|
|
jbe@0
|
935 if (close(errorfds[1]) && errno != EINTR) {
|
|
jbe@0
|
936 moonbr_log(LOG_CRIT, "Could not close opposite end of control file descriptor after forking");
|
|
jbe@0
|
937 moonbr_terminate_error();
|
|
jbe@0
|
938 }
|
|
jbe@0
|
939 }
|
|
jbe@0
|
940 worker->prev_worker = pool->last_worker;
|
|
jbe@0
|
941 if (worker->prev_worker) worker->prev_worker->next_worker = worker;
|
|
jbe@0
|
942 else pool->first_worker = worker;
|
|
jbe@0
|
943 pool->last_worker = worker;
|
|
jbe@0
|
944 pool->unassigned_worker_count++;
|
|
jbe@0
|
945 pool->total_worker_count++;
|
|
jbe@0
|
946 pool->worker_count_stat = 1;
|
|
jbe@0
|
947 moonbr_poll_refresh_needed = 1;
|
|
jbe@0
|
948 return 0; /* return zero only in case of success */
|
|
jbe@0
|
949 }
|
|
jbe@0
|
950
|
|
jbe@0
|
951
|
|
jbe@0
|
952 /*** Functions for queues of 'struct moonbr_listener' ***/
|
|
jbe@0
|
953
|
|
jbe@0
|
954 /* Appends a 'struct moonbr_listener' to the queue of idle listeners and registers it for poll() */
|
|
jbe@0
|
955 static void moonbr_add_idle_listener(struct moonbr_listener *listener) {
|
|
jbe@0
|
956 listener->prev_listener = listener->pool->last_idle_listener;
|
|
jbe@0
|
957 if (listener->prev_listener) listener->prev_listener->next_listener = listener;
|
|
jbe@0
|
958 else listener->pool->first_idle_listener = listener;
|
|
jbe@0
|
959 listener->pool->last_idle_listener = listener;
|
|
jbe@0
|
960 if (listener->pollidx != -1) moonbr_poll_fds[listener->pollidx].events |= POLLIN;
|
|
jbe@0
|
961 }
|
|
jbe@0
|
962
|
|
jbe@0
|
963 /* Removes a 'struct moonbr_listener' from the queue of idle listeners and unregisters it from poll() */
|
|
jbe@0
|
964 static void moonbr_remove_idle_listener(struct moonbr_listener *listener) {
|
|
jbe@0
|
965 if (listener->prev_listener) listener->prev_listener->next_listener = listener->next_listener;
|
|
jbe@0
|
966 else listener->pool->first_idle_listener = listener->next_listener;
|
|
jbe@0
|
967 if (listener->next_listener) listener->next_listener->prev_listener = listener->prev_listener;
|
|
jbe@0
|
968 else listener->pool->last_idle_listener = listener->prev_listener;
|
|
jbe@0
|
969 listener->prev_listener = NULL;
|
|
jbe@0
|
970 listener->next_listener = NULL;
|
|
jbe@0
|
971 if (listener->pollidx != -1) moonbr_poll_fds[listener->pollidx].events &= ~POLLIN;
|
|
jbe@0
|
972 }
|
|
jbe@0
|
973
|
|
jbe@0
|
974 /* Adds a listener to the queue of connected listeners (i.e. waiting to have their incoming connection accepted) */
|
|
jbe@0
|
975 static void moonbr_add_connected_listener(struct moonbr_listener *listener) {
|
|
jbe@0
|
976 listener->prev_listener = listener->pool->last_connected_listener;
|
|
jbe@0
|
977 if (listener->prev_listener) listener->prev_listener->next_listener = listener;
|
|
jbe@0
|
978 else listener->pool->first_connected_listener = listener;
|
|
jbe@0
|
979 listener->pool->last_connected_listener = listener;
|
|
jbe@0
|
980 }
|
|
jbe@0
|
981
|
|
jbe@0
|
982 /* Removes and returns the first connected listener in the queue */
|
|
jbe@0
|
983 static struct moonbr_listener *moonbr_pop_connected_listener(struct moonbr_pool *pool) {
|
|
jbe@0
|
984 struct moonbr_listener *listener = pool->first_connected_listener;
|
|
jbe@0
|
985 listener->pool->first_connected_listener = listener->next_listener;
|
|
jbe@0
|
986 if (listener->pool->first_connected_listener) listener->pool->first_connected_listener->prev_listener = NULL;
|
|
jbe@0
|
987 else listener->pool->last_connected_listener = NULL;
|
|
jbe@0
|
988 listener->next_listener = NULL;
|
|
jbe@0
|
989 return listener;
|
|
jbe@0
|
990 }
|
|
jbe@0
|
991
|
|
jbe@0
|
992
|
|
jbe@0
|
993 /*** Functions to handle polling ***/
|
|
jbe@0
|
994
|
|
jbe@0
|
995 /* Returns an index to a new initialized entry in moonbr_poll_fds[] */
|
|
jbe@0
|
996 int moonbr_poll_fds_nextindex() {
|
|
jbe@0
|
997 if (moonbr_poll_fds_count >= moonbr_poll_fds_bufsize) {
|
|
jbe@0
|
998 if (moonbr_poll_fds_bufsize) moonbr_poll_fds_bufsize *= 2;
|
|
jbe@0
|
999 else moonbr_poll_fds_bufsize = 1;
|
|
jbe@0
|
1000 moonbr_poll_fds = realloc(
|
|
jbe@0
|
1001 moonbr_poll_fds, moonbr_poll_fds_bufsize * sizeof(struct pollfd)
|
|
jbe@0
|
1002 );
|
|
jbe@0
|
1003 if (!moonbr_poll_fds) {
|
|
jbe@0
|
1004 moonbr_log(LOG_CRIT, "Memory allocation error");
|
|
jbe@0
|
1005 moonbr_terminate_error();
|
|
jbe@0
|
1006 }
|
|
jbe@0
|
1007 }
|
|
jbe@0
|
1008 moonbr_poll_fds[moonbr_poll_fds_count] = (struct pollfd){0, };
|
|
jbe@0
|
1009 return moonbr_poll_fds_count++;
|
|
jbe@0
|
1010 }
|
|
jbe@0
|
1011
|
|
jbe@0
|
1012 /* Returns an index to a new initialized entry in moonbr_poll_workers[] */
|
|
jbe@0
|
1013 int moonbr_poll_workers_nextindex() {
|
|
jbe@0
|
1014 if (moonbr_poll_worker_count >= moonbr_poll_workers_bufsize) {
|
|
jbe@0
|
1015 if (moonbr_poll_workers_bufsize) moonbr_poll_workers_bufsize *= 2;
|
|
jbe@0
|
1016 else moonbr_poll_workers_bufsize = 1;
|
|
jbe@0
|
1017 moonbr_poll_workers = realloc(
|
|
jbe@0
|
1018 moonbr_poll_workers, moonbr_poll_workers_bufsize * sizeof(struct moonbr_poll_worker)
|
|
jbe@0
|
1019 );
|
|
jbe@0
|
1020 if (!moonbr_poll_workers) {
|
|
jbe@0
|
1021 moonbr_log(LOG_CRIT, "Memory allocation error");
|
|
jbe@0
|
1022 moonbr_terminate_error();
|
|
jbe@0
|
1023 }
|
|
jbe@0
|
1024 }
|
|
jbe@0
|
1025 moonbr_poll_workers[moonbr_poll_worker_count] = (struct moonbr_poll_worker){0, };
|
|
jbe@0
|
1026 return moonbr_poll_worker_count++;
|
|
jbe@0
|
1027 }
|
|
jbe@0
|
1028
|
|
jbe@0
|
1029 /* Queues all listeners as idle, and initializes static part of moonbr_poll_fds[], which is passed to poll() */
|
|
jbe@0
|
1030 static void moonbr_poll_init() {
|
|
jbe@0
|
1031 if (socketpair(
|
|
jbe@0
|
1032 PF_LOCAL,
|
|
jbe@0
|
1033 SOCK_STREAM | SOCK_CLOEXEC | SOCK_NONBLOCK,
|
|
jbe@0
|
1034 0,
|
|
jbe@0
|
1035 moonbr_poll_signalfds
|
|
jbe@0
|
1036 )) {
|
|
jbe@0
|
1037 moonbr_log(LOG_CRIT, "Could not create socket pair for signal delivery during polling: %s", strerror(errno));
|
|
jbe@0
|
1038 moonbr_terminate_error();
|
|
jbe@0
|
1039 }
|
|
jbe@0
|
1040 {
|
|
jbe@0
|
1041 int j = moonbr_poll_fds_nextindex();
|
|
jbe@0
|
1042 struct pollfd *pollfd = &moonbr_poll_fds[j];
|
|
jbe@0
|
1043 pollfd->fd = moonbr_poll_signalfd_read;
|
|
jbe@0
|
1044 pollfd->events = POLLIN;
|
|
jbe@0
|
1045 }
|
|
jbe@0
|
1046 {
|
|
jbe@0
|
1047 struct moonbr_pool *pool;
|
|
jbe@0
|
1048 for (pool=moonbr_first_pool; pool; pool=pool->next_pool) {
|
|
jbe@0
|
1049 int i;
|
|
jbe@0
|
1050 for (i=0; i<pool->listener_count; i++) {
|
|
jbe@0
|
1051 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
1052 if (listener->listenfd != -1) {
|
|
jbe@0
|
1053 int j = moonbr_poll_fds_nextindex();
|
|
jbe@0
|
1054 listener->pollidx = j;
|
|
jbe@0
|
1055 moonbr_poll_fds[j].fd = listener->listenfd;
|
|
jbe@0
|
1056 }
|
|
jbe@0
|
1057 moonbr_add_idle_listener(listener);
|
|
jbe@0
|
1058 }
|
|
jbe@0
|
1059 }
|
|
jbe@0
|
1060 }
|
|
jbe@0
|
1061 moonbr_poll_fds_static_count = moonbr_poll_fds_count; /* remember size of static part of array */
|
|
jbe@0
|
1062 }
|
|
jbe@0
|
1063
|
|
jbe@0
|
1064 /* Disables polling of all listeners (required for clean shutdown) */
|
|
jbe@0
|
1065 static void moonbr_poll_shutdown() {
|
|
jbe@0
|
1066 int i;
|
|
jbe@0
|
1067 for (i=1; i<moonbr_poll_fds_static_count; i++) {
|
|
jbe@0
|
1068 moonbr_poll_fds[i].fd = -1;
|
|
jbe@0
|
1069 }
|
|
jbe@0
|
1070 }
|
|
jbe@0
|
1071
|
|
jbe@0
|
1072 /* (Re)builds dynamic part of moonbr_poll_fds[] array, and (re)builds moonbr_poll_workers[] array */
|
|
jbe@0
|
1073 static void moonbr_poll_refresh() {
|
|
jbe@0
|
1074 moonbr_poll_refresh_needed = 0;
|
|
jbe@0
|
1075 moonbr_poll_fds_count = moonbr_poll_fds_static_count;
|
|
jbe@0
|
1076 moonbr_poll_worker_count = 0;
|
|
jbe@0
|
1077 {
|
|
jbe@0
|
1078 struct moonbr_pool *pool;
|
|
jbe@0
|
1079 for (pool=moonbr_first_pool; pool; pool=pool->next_pool) {
|
|
jbe@0
|
1080 struct moonbr_worker *worker;
|
|
jbe@0
|
1081 for (worker=pool->first_worker; worker; worker=worker->next_worker) {
|
|
jbe@0
|
1082 if (worker->controlfd != -1) {
|
|
jbe@0
|
1083 int j = moonbr_poll_fds_nextindex();
|
|
jbe@0
|
1084 int k = moonbr_poll_workers_nextindex();
|
|
jbe@0
|
1085 struct pollfd *pollfd = &moonbr_poll_fds[j];
|
|
jbe@0
|
1086 struct moonbr_poll_worker *poll_worker = &moonbr_poll_workers[k];
|
|
jbe@0
|
1087 pollfd->fd = worker->controlfd;
|
|
jbe@0
|
1088 pollfd->events = POLLIN;
|
|
jbe@0
|
1089 poll_worker->channel = MOONBR_POLL_WORKER_CONTROLCHANNEL;
|
|
jbe@0
|
1090 poll_worker->worker = worker;
|
|
jbe@0
|
1091 }
|
|
jbe@0
|
1092 if (worker->errorfd != -1) {
|
|
jbe@0
|
1093 int j = moonbr_poll_fds_nextindex();
|
|
jbe@0
|
1094 int k = moonbr_poll_workers_nextindex();
|
|
jbe@0
|
1095 struct pollfd *pollfd = &moonbr_poll_fds[j];
|
|
jbe@0
|
1096 struct moonbr_poll_worker *poll_worker = &moonbr_poll_workers[k];
|
|
jbe@0
|
1097 pollfd->fd = worker->errorfd;
|
|
jbe@0
|
1098 pollfd->events = POLLIN;
|
|
jbe@0
|
1099 poll_worker->channel = MOONBR_POLL_WORKER_ERRORCHANNEL;
|
|
jbe@0
|
1100 poll_worker->worker = worker;
|
|
jbe@0
|
1101 }
|
|
jbe@0
|
1102 }
|
|
jbe@0
|
1103 }
|
|
jbe@0
|
1104 }
|
|
jbe@0
|
1105 }
|
|
jbe@0
|
1106
|
|
jbe@0
|
1107 /* resets socket and 'revents' field of moonbr_poll_fds[] for signal delivery just before poll() is called */
|
|
jbe@0
|
1108 static void moonbr_poll_reset_signal() {
|
|
jbe@0
|
1109 ssize_t readcount;
|
|
jbe@0
|
1110 char buf[1];
|
|
jbe@0
|
1111 moonbr_poll_fds[0].revents = 0;
|
|
jbe@0
|
1112 while ((readcount = read(moonbr_poll_signalfd_read, buf, 1)) < 0) {
|
|
jbe@0
|
1113 if (errno == EAGAIN) break;
|
|
jbe@0
|
1114 if (errno != EINTR) {
|
|
jbe@0
|
1115 moonbr_log(LOG_CRIT, "Error while reading from signal delivery socket: %s", strerror(errno));
|
|
jbe@0
|
1116 moonbr_terminate_error();
|
|
jbe@0
|
1117 }
|
|
jbe@0
|
1118 }
|
|
jbe@0
|
1119 if (!readcount) {
|
|
jbe@0
|
1120 moonbr_log(LOG_CRIT, "Unexpected EOF when reading from signal delivery socket: %s", strerror(errno));
|
|
jbe@0
|
1121 moonbr_terminate_error();
|
|
jbe@0
|
1122 }
|
|
jbe@0
|
1123 }
|
|
jbe@0
|
1124
|
|
jbe@0
|
1125
|
|
jbe@0
|
1126 /*** Shutdown initiation ***/
|
|
jbe@0
|
1127
|
|
jbe@0
|
1128 /* Sets global variable 'moonbr_shutdown_in_progress', closes listeners, and demands worker termination */
|
|
jbe@0
|
1129 static void moonbr_initiate_shutdown() {
|
|
jbe@0
|
1130 struct moonbr_pool *pool;
|
|
jbe@0
|
1131 int i;
|
|
jbe@277
|
1132 static int ignore_once = 0;
|
|
jbe@277
|
1133 if (ignore_once) {
|
|
jbe@277
|
1134 ignore_once = 0;
|
|
jbe@277
|
1135 return;
|
|
jbe@277
|
1136 }
|
|
jbe@0
|
1137 if (moonbr_shutdown_in_progress) {
|
|
jbe@0
|
1138 moonbr_log(LOG_NOTICE, "Shutdown already in progress");
|
|
jbe@0
|
1139 return;
|
|
jbe@0
|
1140 }
|
|
jbe@0
|
1141 moonbr_shutdown_in_progress = 1;
|
|
jbe@0
|
1142 moonbr_log(LOG_NOTICE, "Initiate shutdown");
|
|
jbe@0
|
1143 for (pool = moonbr_first_pool; pool; pool = pool->next_pool) {
|
|
jbe@0
|
1144 for (i=0; i<pool->listener_count; i++) {
|
|
jbe@0
|
1145 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
1146 if (listener->listenfd != -1) {
|
|
jbe@0
|
1147 if (close(listener->listenfd) && errno != EINTR) {
|
|
jbe@0
|
1148 moonbr_log(LOG_CRIT, "Could not close listening socket: %s", strerror(errno));
|
|
jbe@0
|
1149 moonbr_terminate_error();
|
|
jbe@0
|
1150 }
|
|
jbe@0
|
1151 }
|
|
jbe@0
|
1152 }
|
|
jbe@0
|
1153 }
|
|
jbe@0
|
1154 moonbr_poll_shutdown(); /* avoids loops due to error condition when polling closed listeners */
|
|
jbe@195
|
1155 {
|
|
jbe@195
|
1156 pid_t pgrp = getpgrp();
|
|
jbe@269
|
1157 moonbr_log(LOG_INFO, "Sending SIGTERM to all processes in group %i", (int)pgrp);
|
|
jbe@269
|
1158 if (killpg(pgrp, SIGTERM)) {
|
|
jbe@269
|
1159 moonbr_log(LOG_WARNING, "Error while sending SIGTERM to own process group: %s", strerror(errno));
|
|
jbe@195
|
1160 }
|
|
jbe@277
|
1161 ignore_once = 1;
|
|
jbe@195
|
1162 }
|
|
jbe@0
|
1163 }
|
|
jbe@0
|
1164
|
|
jbe@0
|
1165
|
|
jbe@128
|
1166 /*** Functions to handle previously created 'struct moonbr_worker' structures ***/
|
|
jbe@128
|
1167
|
|
jbe@128
|
1168 #define moonbr_try_destroy_worker_stat(str, field) \
|
|
jbe@128
|
1169 moonbr_log(LOG_INFO, "Resource usage in pool #%i for PID %i: " str " %li", worker->pool->poolnum, (int)worker->pid, (long)childusage.field);
|
|
jbe@128
|
1170
|
|
jbe@128
|
1171 /* Destroys a worker structure if socket connections have been closed and child process has terminated */
|
|
jbe@128
|
1172 static int moonbr_try_destroy_worker(struct moonbr_worker *worker) {
|
|
jbe@128
|
1173 if (worker->controlfd != -1 || worker->errorfd != -1) return MOONBR_DESTROY_NONE;
|
|
jbe@128
|
1174 {
|
|
jbe@128
|
1175 int childstatus;
|
|
jbe@128
|
1176 struct rusage childusage;
|
|
jbe@128
|
1177 {
|
|
jbe@128
|
1178 pid_t waitedpid;
|
|
jbe@128
|
1179 while (
|
|
jbe@128
|
1180 (waitedpid = wait4(worker->pid, &childstatus, WNOHANG, &childusage)) == -1
|
|
jbe@128
|
1181 ) {
|
|
jbe@128
|
1182 if (errno != EINTR) {
|
|
jbe@128
|
1183 moonbr_log(LOG_CRIT, "Error in wait4() call: %s", strerror(errno));
|
|
jbe@128
|
1184 moonbr_terminate_error();
|
|
jbe@128
|
1185 }
|
|
jbe@128
|
1186 }
|
|
jbe@128
|
1187 if (!waitedpid) return 0; /* return 0 if worker couldn't be destroyed */
|
|
jbe@128
|
1188 if (waitedpid != worker->pid) {
|
|
jbe@128
|
1189 moonbr_log(LOG_CRIT, "Wrong PID returned by wait4() call");
|
|
jbe@128
|
1190 moonbr_terminate_error();
|
|
jbe@128
|
1191 }
|
|
jbe@128
|
1192 }
|
|
jbe@128
|
1193 if (WIFEXITED(childstatus)) {
|
|
jbe@128
|
1194 if (WEXITSTATUS(childstatus) || moonbr_stat) {
|
|
jbe@128
|
1195 moonbr_log(
|
|
jbe@128
|
1196 WEXITSTATUS(childstatus) ? LOG_WARNING : LOG_INFO,
|
|
jbe@128
|
1197 "Child process in pool #%i with PID %i returned with exit code %i", worker->pool->poolnum, (int)worker->pid, WEXITSTATUS(childstatus)
|
|
jbe@128
|
1198 );
|
|
jbe@128
|
1199 }
|
|
jbe@128
|
1200 } else if (WIFSIGNALED(childstatus)) {
|
|
jbe@128
|
1201 if (WCOREDUMP(childstatus)) {
|
|
jbe@128
|
1202 moonbr_log(LOG_ERR, "Child process in pool #%i with PID %i died from signal %i (core dump was created)", worker->pool->poolnum, (int)worker->pid, WTERMSIG(childstatus));
|
|
jbe@128
|
1203 } else if (WTERMSIG(childstatus) == SIGALRM) {
|
|
jbe@128
|
1204 moonbr_log(LOG_WARNING, "Child process in pool #%i with PID %i exited prematurely due to timeout", worker->pool->poolnum, (int)worker->pid);
|
|
jbe@128
|
1205 } else {
|
|
jbe@128
|
1206 moonbr_log(LOG_ERR, "Child process in pool #%i with PID %i died from signal %i", worker->pool->poolnum, (int)worker->pid, WTERMSIG(childstatus));
|
|
jbe@128
|
1207 }
|
|
jbe@128
|
1208 } else {
|
|
jbe@128
|
1209 moonbr_log(LOG_CRIT, "Illegal exit status from child process in pool #%i with PID %i", worker->pool->poolnum, (int)worker->pid);
|
|
jbe@128
|
1210 moonbr_terminate_error();
|
|
jbe@128
|
1211 }
|
|
jbe@128
|
1212 if (moonbr_stat) {
|
|
jbe@128
|
1213 moonbr_log(LOG_INFO, "Resource usage in pool #%i for PID %i: user time %s", worker->pool->poolnum, (int)worker->pid, moonbr_format_timeval(&childusage.ru_utime));
|
|
jbe@128
|
1214 moonbr_log(LOG_INFO, "Resource usage in pool #%i for PID %i: system time %s", worker->pool->poolnum, (int)worker->pid, moonbr_format_timeval(&childusage.ru_stime));
|
|
jbe@128
|
1215 moonbr_try_destroy_worker_stat("max resident set size", ru_maxrss);
|
|
jbe@128
|
1216 moonbr_try_destroy_worker_stat("integral shared memory size", ru_ixrss);
|
|
jbe@128
|
1217 moonbr_try_destroy_worker_stat("integral unshared data", ru_idrss);
|
|
jbe@128
|
1218 moonbr_try_destroy_worker_stat("integral unshared stack", ru_isrss);
|
|
jbe@128
|
1219 moonbr_try_destroy_worker_stat("page replaims", ru_minflt);
|
|
jbe@128
|
1220 moonbr_try_destroy_worker_stat("page faults", ru_majflt);
|
|
jbe@128
|
1221 moonbr_try_destroy_worker_stat("swaps", ru_nswap);
|
|
jbe@128
|
1222 moonbr_try_destroy_worker_stat("block input operations", ru_inblock);
|
|
jbe@128
|
1223 moonbr_try_destroy_worker_stat("block output operations", ru_oublock);
|
|
jbe@128
|
1224 moonbr_try_destroy_worker_stat("messages sent", ru_msgsnd);
|
|
jbe@128
|
1225 moonbr_try_destroy_worker_stat("messages received", ru_msgrcv);
|
|
jbe@128
|
1226 moonbr_try_destroy_worker_stat("signals received", ru_nsignals);
|
|
jbe@128
|
1227 moonbr_try_destroy_worker_stat("voluntary context switches", ru_nvcsw);
|
|
jbe@128
|
1228 moonbr_try_destroy_worker_stat("involuntary context switches", ru_nivcsw);
|
|
jbe@128
|
1229 }
|
|
jbe@128
|
1230 }
|
|
jbe@128
|
1231 {
|
|
jbe@128
|
1232 int retval = (
|
|
jbe@128
|
1233 (worker->idle || worker->assigned) ?
|
|
jbe@128
|
1234 MOONBR_DESTROY_IDLE_OR_ASSIGNED :
|
|
jbe@128
|
1235 MOONBR_DESTROY_PREPARE
|
|
jbe@128
|
1236 );
|
|
jbe@128
|
1237 if (worker->main) moonbr_initiate_shutdown();
|
|
jbe@128
|
1238 if (worker->prev_worker) worker->prev_worker->next_worker = worker->next_worker;
|
|
jbe@128
|
1239 else worker->pool->first_worker = worker->next_worker;
|
|
jbe@128
|
1240 if (worker->next_worker) worker->next_worker->prev_worker = worker->prev_worker;
|
|
jbe@128
|
1241 else worker->pool->last_worker = worker->prev_worker;
|
|
jbe@128
|
1242 if (worker->idle) {
|
|
jbe@128
|
1243 if (worker->prev_idle_worker) worker->prev_idle_worker->next_idle_worker = worker->next_idle_worker;
|
|
jbe@128
|
1244 else worker->pool->first_idle_worker = worker->next_idle_worker;
|
|
jbe@128
|
1245 if (worker->next_idle_worker) worker->next_idle_worker->prev_idle_worker = worker->prev_idle_worker;
|
|
jbe@128
|
1246 else worker->pool->last_idle_worker = worker->prev_idle_worker;
|
|
jbe@128
|
1247 worker->pool->idle_worker_count--;
|
|
jbe@128
|
1248 }
|
|
jbe@128
|
1249 if (!worker->assigned) worker->pool->unassigned_worker_count--;
|
|
jbe@128
|
1250 worker->pool->total_worker_count--;
|
|
jbe@128
|
1251 worker->pool->worker_count_stat = 1;
|
|
jbe@128
|
1252 if (worker->errorlinebuf) free(worker->errorlinebuf);
|
|
jbe@128
|
1253 free(worker);
|
|
jbe@128
|
1254 return retval;
|
|
jbe@128
|
1255 }
|
|
jbe@128
|
1256 }
|
|
jbe@128
|
1257
|
|
jbe@128
|
1258 /* Marks a worker as idle and stores it in a queue, optionally setting 'idle_expiration' value */
|
|
jbe@128
|
1259 static void moonbr_add_idle_worker(struct moonbr_worker *worker) {
|
|
jbe@128
|
1260 worker->prev_idle_worker = worker->pool->last_idle_worker;
|
|
jbe@128
|
1261 if (worker->prev_idle_worker) worker->prev_idle_worker->next_idle_worker = worker;
|
|
jbe@128
|
1262 else worker->pool->first_idle_worker = worker;
|
|
jbe@128
|
1263 worker->pool->last_idle_worker = worker;
|
|
jbe@128
|
1264 worker->idle = 1;
|
|
jbe@128
|
1265 worker->pool->idle_worker_count++;
|
|
jbe@128
|
1266 if (worker->assigned) {
|
|
jbe@128
|
1267 worker->assigned = 0;
|
|
jbe@128
|
1268 worker->pool->unassigned_worker_count++;
|
|
jbe@128
|
1269 }
|
|
jbe@128
|
1270 worker->pool->worker_count_stat = 1;
|
|
jbe@128
|
1271 if (timerisset(&worker->pool->idle_timeout)) {
|
|
jbe@128
|
1272 struct timeval now;
|
|
jbe@128
|
1273 moonbr_now(&now);
|
|
jbe@128
|
1274 timeradd(&now, &worker->pool->idle_timeout, &worker->idle_expiration);
|
|
jbe@128
|
1275 }
|
|
jbe@128
|
1276 }
|
|
jbe@128
|
1277
|
|
jbe@128
|
1278 /* Pops a worker from the queue of idle workers (idle queue must not be empty) */
|
|
jbe@128
|
1279 static struct moonbr_worker *moonbr_pop_idle_worker(struct moonbr_pool *pool) {
|
|
jbe@128
|
1280 struct moonbr_worker *worker;
|
|
jbe@128
|
1281 worker = pool->first_idle_worker;
|
|
jbe@128
|
1282 pool->first_idle_worker = worker->next_idle_worker;
|
|
jbe@128
|
1283 if (pool->first_idle_worker) pool->first_idle_worker->prev_idle_worker = NULL;
|
|
jbe@128
|
1284 else pool->last_idle_worker = NULL;
|
|
jbe@128
|
1285 worker->next_idle_worker = NULL;
|
|
jbe@128
|
1286 worker->idle = 0;
|
|
jbe@128
|
1287 worker->pool->idle_worker_count--;
|
|
jbe@128
|
1288 worker->assigned = 1;
|
|
jbe@128
|
1289 worker->pool->unassigned_worker_count--;
|
|
jbe@128
|
1290 worker->pool->worker_count_stat = 1;
|
|
jbe@128
|
1291 return worker;
|
|
jbe@128
|
1292 }
|
|
jbe@128
|
1293
|
|
jbe@128
|
1294
|
|
jbe@0
|
1295 /*** Functions to communicate with child processes ***/
|
|
jbe@0
|
1296
|
|
jbe@0
|
1297 /* Tells child process to terminate */
|
|
jbe@0
|
1298 static void moonbr_terminate_idle_worker(struct moonbr_worker *worker) {
|
|
jbe@0
|
1299 moonbr_send_control_message(worker, MOONBR_COMMAND_TERMINATE, -1, NULL);
|
|
jbe@0
|
1300 }
|
|
jbe@0
|
1301
|
|
jbe@0
|
1302 /* Handles status messages from child process */
|
|
jbe@0
|
1303 static void moonbr_read_controlchannel(struct moonbr_worker *worker) {
|
|
jbe@0
|
1304 char controlmsg;
|
|
jbe@0
|
1305 {
|
|
jbe@0
|
1306 ssize_t bytes_read;
|
|
jbe@0
|
1307 while ((bytes_read = read(worker->controlfd, &controlmsg, 1)) <= 0) {
|
|
jbe@0
|
1308 if (bytes_read == 0 || errno == ECONNRESET) {
|
|
jbe@0
|
1309 moonbr_log(LOG_WARNING, "Child process in pool #%i with PID %i unexpectedly closed control socket", worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1310 if (close(worker->controlfd) && errno != EINTR) {
|
|
jbe@0
|
1311 moonbr_log(LOG_CRIT, "Error while closing control socket to child process in pool #%i with PID %i: %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
1312 moonbr_terminate_error();
|
|
jbe@0
|
1313 }
|
|
jbe@0
|
1314 worker->controlfd = -1;
|
|
jbe@0
|
1315 moonbr_poll_refresh_needed = 1;
|
|
jbe@0
|
1316 return;
|
|
jbe@0
|
1317 }
|
|
jbe@0
|
1318 if (errno != EINTR) {
|
|
jbe@0
|
1319 moonbr_log(LOG_CRIT, "Unexpected error while reading control socket from child process in pool #%i with PID %i: %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
1320 moonbr_terminate_error();
|
|
jbe@0
|
1321 }
|
|
jbe@0
|
1322 }
|
|
jbe@0
|
1323 }
|
|
jbe@0
|
1324 if (worker->idle) {
|
|
jbe@0
|
1325 moonbr_log(LOG_CRIT, "Unexpected data from supposedly idle child process in pool #%i with PID %i", worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1326 moonbr_terminate_error();
|
|
jbe@0
|
1327 }
|
|
jbe@0
|
1328 if (moonbr_debug) {
|
|
jbe@0
|
1329 moonbr_log(LOG_DEBUG, "Received control message from child in pool #%i with PID %i: \"%c\"", worker->pool->poolnum, (int)worker->pid, (int)controlmsg);
|
|
jbe@0
|
1330 }
|
|
jbe@0
|
1331 switch (controlmsg) {
|
|
jbe@0
|
1332 case MOONBR_STATUS_IDLE:
|
|
jbe@0
|
1333 if (moonbr_stat) {
|
|
jbe@0
|
1334 moonbr_log(LOG_INFO, "Child process in pool #%i with PID %i reports as idle", worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1335 }
|
|
jbe@0
|
1336 moonbr_add_idle_worker(worker);
|
|
jbe@0
|
1337 break;
|
|
jbe@0
|
1338 case MOONBR_STATUS_GOODBYE:
|
|
jbe@0
|
1339 if (moonbr_stat) {
|
|
jbe@0
|
1340 moonbr_log(LOG_INFO, "Child process in pool #%i with PID %i announced termination", worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1341 }
|
|
jbe@0
|
1342 if (close(worker->controlfd) && errno != EINTR) {
|
|
jbe@0
|
1343 moonbr_log(LOG_CRIT, "Error while closing control socket to child process in pool #%i with PID %i: %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
1344 moonbr_terminate_error();
|
|
jbe@0
|
1345 }
|
|
jbe@0
|
1346 worker->controlfd = -1;
|
|
jbe@0
|
1347 moonbr_poll_refresh_needed = 1;
|
|
jbe@0
|
1348 break;
|
|
jbe@0
|
1349 default:
|
|
jbe@0
|
1350 moonbr_log(LOG_CRIT, "Received illegal data (\"%c\") while reading control socket from child process in pool #%i with PID %i", (int)controlmsg, worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1351 moonbr_terminate_error();
|
|
jbe@0
|
1352 }
|
|
jbe@0
|
1353 }
|
|
jbe@0
|
1354
|
|
jbe@0
|
1355 /* Handles stderr stream from child process */
|
|
jbe@0
|
1356 static void moonbr_read_errorchannel(struct moonbr_worker *worker) {
|
|
jbe@0
|
1357 char staticbuf[MOONBR_MAXERRORLINELEN+1];
|
|
jbe@0
|
1358 char *buf = worker->errorlinebuf;
|
|
jbe@0
|
1359 if (!buf) buf = staticbuf;
|
|
jbe@0
|
1360 {
|
|
jbe@0
|
1361 ssize_t bytes_read;
|
|
jbe@0
|
1362 while (
|
|
jbe@0
|
1363 (bytes_read = read(
|
|
jbe@0
|
1364 worker->errorfd,
|
|
jbe@0
|
1365 buf + worker->errorlinelen,
|
|
jbe@0
|
1366 MOONBR_MAXERRORLINELEN+1 - worker->errorlinelen
|
|
jbe@0
|
1367 )) <= 0
|
|
jbe@0
|
1368 ) {
|
|
jbe@0
|
1369 if (bytes_read == 0 || errno == ECONNRESET) {
|
|
jbe@0
|
1370 if (moonbr_debug) {
|
|
jbe@0
|
1371 moonbr_log(LOG_DEBUG, "Child process in pool #%i with PID %i closed stderr socket", worker->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1372 }
|
|
jbe@0
|
1373 if (close(worker->errorfd) && errno != EINTR) {
|
|
jbe@0
|
1374 moonbr_log(LOG_CRIT, "Error while closing stderr socket to child process in pool #%i with PID %i: %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
1375 moonbr_terminate_error();
|
|
jbe@0
|
1376 }
|
|
jbe@0
|
1377 worker->errorfd = -1;
|
|
jbe@0
|
1378 moonbr_poll_refresh_needed = 1;
|
|
jbe@0
|
1379 break;
|
|
jbe@0
|
1380 }
|
|
jbe@0
|
1381 if (errno != EINTR) {
|
|
jbe@0
|
1382 moonbr_log(LOG_CRIT, "Unexpected error while reading stderr from child process in pool #%i with PID %i: %s", worker->pool->poolnum, (int)worker->pid, strerror(errno));
|
|
jbe@0
|
1383 moonbr_terminate_error();
|
|
jbe@0
|
1384 }
|
|
jbe@0
|
1385 }
|
|
jbe@0
|
1386 worker->errorlinelen += bytes_read;
|
|
jbe@0
|
1387 }
|
|
jbe@0
|
1388 {
|
|
jbe@0
|
1389 int i;
|
|
jbe@0
|
1390 for (i=0; i<worker->errorlinelen; i++) {
|
|
jbe@0
|
1391 if (buf[i] == '\n') buf[i] = 0;
|
|
jbe@0
|
1392 if (!buf[i]) {
|
|
jbe@0
|
1393 if (worker->errorlineovf) {
|
|
jbe@0
|
1394 worker->errorlineovf = 0;
|
|
jbe@0
|
1395 } else {
|
|
jbe@283
|
1396 moonbr_log(LOG_WARNING, "[Pool #%i, PID %i] %s", worker->pool->poolnum, (int)worker->pid, buf);
|
|
jbe@0
|
1397 }
|
|
jbe@0
|
1398 worker->errorlinelen -= i+1;
|
|
jbe@0
|
1399 memmove(buf, buf+i+1, worker->errorlinelen);
|
|
jbe@0
|
1400 i = -1;
|
|
jbe@0
|
1401 }
|
|
jbe@0
|
1402 }
|
|
jbe@0
|
1403 if (i > MOONBR_MAXERRORLINELEN) {
|
|
jbe@0
|
1404 buf[MOONBR_MAXERRORLINELEN] = 0;
|
|
jbe@0
|
1405 if (!worker->errorlineovf) {
|
|
jbe@283
|
1406 moonbr_log(LOG_WARNING, "[Pool #%i, PID %i](line has been truncated) %s", worker->pool->poolnum, (int)worker->pid, buf);
|
|
jbe@0
|
1407 }
|
|
jbe@0
|
1408 worker->errorlinelen = 0;
|
|
jbe@0
|
1409 worker->errorlineovf = 1;
|
|
jbe@0
|
1410 }
|
|
jbe@0
|
1411 }
|
|
jbe@0
|
1412 if (!worker->errorlinebuf && worker->errorlinelen) { /* allocate buffer on heap only if necessary */
|
|
jbe@0
|
1413 worker->errorlinebuf = malloc((MOONBR_MAXERRORLINELEN+1) * sizeof(char));
|
|
jbe@0
|
1414 if (!worker->errorlinebuf) {
|
|
jbe@0
|
1415 moonbr_log(LOG_CRIT, "Memory allocation error");
|
|
jbe@0
|
1416 moonbr_terminate_error();
|
|
jbe@0
|
1417 }
|
|
jbe@0
|
1418 memcpy(worker->errorlinebuf, staticbuf, worker->errorlinelen);
|
|
jbe@0
|
1419 }
|
|
jbe@0
|
1420 }
|
|
jbe@0
|
1421
|
|
jbe@0
|
1422
|
|
jbe@0
|
1423 /*** Handler for incoming connections ***/
|
|
jbe@0
|
1424
|
|
jbe@0
|
1425 /* Accepts one or more incoming connections on listener socket and passes it to worker(s) popped from idle queue */
|
|
jbe@0
|
1426 static void moonbr_connect(struct moonbr_pool *pool) {
|
|
jbe@0
|
1427 struct moonbr_listener *listener = moonbr_pop_connected_listener(pool);
|
|
jbe@0
|
1428 struct moonbr_worker *worker;
|
|
jbe@274
|
1429 if (listener->proto == MOONBR_PROTO_INTERVAL) {
|
|
jbe@127
|
1430 worker = moonbr_pop_idle_worker(pool);
|
|
jbe@274
|
1431 if (listener->type_specific.interval.main) {
|
|
jbe@274
|
1432 if (moonbr_stat) {
|
|
jbe@274
|
1433 moonbr_log(LOG_INFO, "Dispatching main thread \"%s\" of pool #%i to PID %i", listener->type_specific.interval.name, listener->pool->poolnum, (int)worker->pid);
|
|
jbe@274
|
1434 }
|
|
jbe@274
|
1435 worker->main = 1;
|
|
jbe@274
|
1436 } else {
|
|
jbe@274
|
1437 if (moonbr_stat) {
|
|
jbe@274
|
1438 moonbr_log(LOG_INFO, "Dispatching interval timer \"%s\" of pool #%i to PID %i", listener->type_specific.interval.name, listener->pool->poolnum, (int)worker->pid);
|
|
jbe@274
|
1439 }
|
|
jbe@274
|
1440 worker->restart_interval_listener = listener;
|
|
jbe@127
|
1441 }
|
|
jbe@127
|
1442 moonbr_send_control_message(worker, MOONBR_COMMAND_CONNECT, -1, listener);
|
|
jbe@274
|
1443 /* do not push listener to queue of idle listeners (yet) */
|
|
jbe@125
|
1444 } else {
|
|
jbe@125
|
1445 int peerfd;
|
|
jbe@0
|
1446 do {
|
|
jbe@214
|
1447 #if defined(__linux__) && !defined(_GNU_SOURCE)
|
|
jbe@212
|
1448 peerfd = accept(listener->listenfd, NULL, NULL);
|
|
jbe@212
|
1449 if (peerfd != -1) {
|
|
jbe@212
|
1450 if (fcntl(peerfd, F_SETFD, FD_CLOEXEC) == -1) {
|
|
jbe@212
|
1451 moonbr_log(LOG_ERR, "Error in fcntl() call: %s", strerror(errno));
|
|
jbe@212
|
1452 moonbr_terminate_error();
|
|
jbe@212
|
1453 }
|
|
jbe@212
|
1454 }
|
|
jbe@214
|
1455 #else
|
|
jbe@214
|
1456 peerfd = accept4(listener->listenfd, NULL, NULL, SOCK_CLOEXEC);
|
|
jbe@214
|
1457 #endif
|
|
jbe@0
|
1458 if (peerfd == -1) {
|
|
jbe@0
|
1459 if (errno == EWOULDBLOCK) {
|
|
jbe@0
|
1460 break;
|
|
jbe@0
|
1461 } else if (errno == ECONNABORTED) {
|
|
jbe@125
|
1462 moonbr_log(LOG_WARNING, "Connection aborted before accepting it");
|
|
jbe@0
|
1463 break;
|
|
jbe@0
|
1464 } else if (errno != EINTR) {
|
|
jbe@0
|
1465 moonbr_log(LOG_ERR, "Could not accept socket connection: %s", strerror(errno));
|
|
jbe@0
|
1466 moonbr_terminate_error();
|
|
jbe@0
|
1467 }
|
|
jbe@0
|
1468 } else {
|
|
jbe@0
|
1469 worker = moonbr_pop_idle_worker(pool);
|
|
jbe@0
|
1470 if (moonbr_stat) {
|
|
jbe@125
|
1471 moonbr_log(LOG_INFO, "Dispatching connection for pool #%i to PID %i", listener->pool->poolnum, (int)worker->pid);
|
|
jbe@0
|
1472 }
|
|
jbe@124
|
1473 moonbr_send_control_message(worker, MOONBR_COMMAND_CONNECT, peerfd, listener);
|
|
jbe@0
|
1474 if (close(peerfd) && errno != EINTR) {
|
|
jbe@0
|
1475 moonbr_log(LOG_ERR, "Could not close incoming socket connection in parent process: %s", strerror(errno));
|
|
jbe@0
|
1476 moonbr_terminate_error();
|
|
jbe@0
|
1477 }
|
|
jbe@0
|
1478 }
|
|
jbe@0
|
1479 } while (pool->first_idle_worker);
|
|
jbe@0
|
1480 moonbr_add_idle_listener(listener);
|
|
jbe@0
|
1481 }
|
|
jbe@0
|
1482 }
|
|
jbe@0
|
1483
|
|
jbe@0
|
1484
|
|
jbe@0
|
1485 /*** Functions to initialize and restart interval timers ***/
|
|
jbe@0
|
1486
|
|
jbe@0
|
1487 /* Initializes all interval timers */
|
|
jbe@0
|
1488 static void moonbr_interval_initialize() {
|
|
jbe@0
|
1489 struct timeval now;
|
|
jbe@0
|
1490 struct moonbr_pool *pool;
|
|
jbe@0
|
1491 moonbr_now(&now);
|
|
jbe@0
|
1492 for (pool=moonbr_first_pool; pool; pool=pool->next_pool) {
|
|
jbe@0
|
1493 int i;
|
|
jbe@0
|
1494 for (i=0; i<pool->listener_count; i++) {
|
|
jbe@0
|
1495 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
1496 if (listener->proto == MOONBR_PROTO_INTERVAL) {
|
|
jbe@0
|
1497 timeradd(
|
|
jbe@0
|
1498 &now,
|
|
jbe@125
|
1499 &listener->type_specific.interval.delay,
|
|
jbe@125
|
1500 &listener->type_specific.interval.wakeup
|
|
jbe@0
|
1501 );
|
|
jbe@0
|
1502 }
|
|
jbe@0
|
1503 }
|
|
jbe@0
|
1504 }
|
|
jbe@0
|
1505 }
|
|
jbe@0
|
1506
|
|
jbe@0
|
1507 /* If necessary, restarts interval timers and queues interval listener as idle after a worker changed status */
|
|
jbe@0
|
1508 static void moonbr_interval_restart(
|
|
jbe@0
|
1509 struct moonbr_worker *worker,
|
|
jbe@0
|
1510 struct timeval *now /* passed to synchronize with moonbr_run() function */
|
|
jbe@0
|
1511 ) {
|
|
jbe@0
|
1512 struct moonbr_listener *listener = worker->restart_interval_listener;
|
|
jbe@0
|
1513 if (listener) {
|
|
jbe@0
|
1514 moonbr_add_idle_listener(listener);
|
|
jbe@0
|
1515 worker->restart_interval_listener = NULL;
|
|
jbe@125
|
1516 if (listener->type_specific.interval.strict) {
|
|
jbe@0
|
1517 timeradd(
|
|
jbe@125
|
1518 &listener->type_specific.interval.wakeup,
|
|
jbe@125
|
1519 &listener->type_specific.interval.delay,
|
|
jbe@125
|
1520 &listener->type_specific.interval.wakeup
|
|
jbe@0
|
1521 );
|
|
jbe@125
|
1522 if (timercmp(&listener->type_specific.interval.wakeup, now, <)) {
|
|
jbe@125
|
1523 listener->type_specific.interval.wakeup = *now;
|
|
jbe@0
|
1524 }
|
|
jbe@0
|
1525 } else {
|
|
jbe@0
|
1526 timeradd(
|
|
jbe@0
|
1527 now,
|
|
jbe@125
|
1528 &listener->type_specific.interval.delay,
|
|
jbe@125
|
1529 &listener->type_specific.interval.wakeup
|
|
jbe@0
|
1530 );
|
|
jbe@0
|
1531 }
|
|
jbe@0
|
1532 }
|
|
jbe@0
|
1533 }
|
|
jbe@0
|
1534
|
|
jbe@0
|
1535
|
|
jbe@0
|
1536 /*** Main loop and helper functions ***/
|
|
jbe@0
|
1537
|
|
jbe@0
|
1538 /* Stores the earliest required wakeup time in 'wait' variable */
|
|
jbe@0
|
1539 static void moonbr_calc_wait(struct timeval *wait, struct timeval *wakeup) {
|
|
jbe@0
|
1540 if (!timerisset(wait) || timercmp(wakeup, wait, <)) *wait = *wakeup;
|
|
jbe@0
|
1541 }
|
|
jbe@0
|
1542
|
|
jbe@0
|
1543 /* Main loop of Moonbridge system (including initialization of signal handlers and polling structures) */
|
|
jbe@0
|
1544 static void moonbr_run(lua_State *L) {
|
|
jbe@0
|
1545 struct timeval now;
|
|
jbe@0
|
1546 struct moonbr_pool *pool;
|
|
jbe@0
|
1547 struct moonbr_worker *worker;
|
|
jbe@0
|
1548 struct moonbr_worker *next_worker; /* needed when worker is removed during iteration of workers */
|
|
jbe@0
|
1549 struct moonbr_listener *listener;
|
|
jbe@0
|
1550 struct moonbr_listener *next_listener; /* needed when listener is removed during iteration of listeners */
|
|
jbe@0
|
1551 int i;
|
|
jbe@0
|
1552 moonbr_poll_init(); /* must be executed before moonbr_signal_init() */
|
|
jbe@0
|
1553 moonbr_signal_init();
|
|
jbe@0
|
1554 moonbr_interval_initialize();
|
|
jbe@0
|
1555 moonbr_pstate = MOONBR_PSTATE_RUNNING;
|
|
jbe@0
|
1556 while (1) {
|
|
jbe@0
|
1557 struct timeval wait = {0, }; /* point in time when premature wakeup of poll() is required */
|
|
jbe@0
|
1558 if (moonbr_cond_interrupt) {
|
|
jbe@0
|
1559 moonbr_log(LOG_WARNING, "Fast shutdown requested");
|
|
jbe@0
|
1560 moonbr_terminate(MOONBR_EXITCODE_GRACEFUL);
|
|
jbe@0
|
1561 }
|
|
jbe@276
|
1562 if (moonbr_cond_terminate) {
|
|
jbe@276
|
1563 moonbr_initiate_shutdown();
|
|
jbe@276
|
1564 moonbr_cond_terminate = 0;
|
|
jbe@276
|
1565 }
|
|
jbe@0
|
1566 moonbr_cond_child = 0; /* must not be reset between moonbr_try_destroy_worker() and poll() */
|
|
jbe@0
|
1567 moonbr_now(&now);
|
|
jbe@0
|
1568 for (pool=moonbr_first_pool; pool; pool=pool->next_pool) {
|
|
jbe@0
|
1569 int terminated_worker_count = 0; /* allows shortcut for new worker creation */
|
|
jbe@0
|
1570 /* terminate idle workers when expired */
|
|
jbe@0
|
1571 if (timerisset(&pool->idle_timeout)) {
|
|
jbe@0
|
1572 while ((worker = pool->first_idle_worker) != NULL) {
|
|
jbe@0
|
1573 if (timercmp(&worker->idle_expiration, &now, >)) break;
|
|
jbe@0
|
1574 moonbr_pop_idle_worker(pool);
|
|
jbe@0
|
1575 moonbr_terminate_idle_worker(worker);
|
|
jbe@0
|
1576 }
|
|
jbe@0
|
1577 }
|
|
jbe@0
|
1578 /* mark listeners as connected when incoming connection is pending */
|
|
jbe@0
|
1579 for (listener=pool->first_idle_listener; listener; listener=next_listener) {
|
|
jbe@0
|
1580 next_listener = listener->next_listener; /* extra variable necessary due to changing list */
|
|
jbe@0
|
1581 if (listener->pollidx != -1) {
|
|
jbe@0
|
1582 if (moonbr_poll_fds[listener->pollidx].revents) {
|
|
jbe@0
|
1583 moonbr_poll_fds[listener->pollidx].revents = 0;
|
|
jbe@0
|
1584 moonbr_remove_idle_listener(listener);
|
|
jbe@0
|
1585 moonbr_add_connected_listener(listener);
|
|
jbe@0
|
1586 }
|
|
jbe@127
|
1587 } else if (
|
|
jbe@127
|
1588 listener->proto != MOONBR_PROTO_INTERVAL ||
|
|
jbe@127
|
1589 !timercmp(&listener->type_specific.interval.wakeup, &now, >)
|
|
jbe@127
|
1590 ) {
|
|
jbe@127
|
1591 moonbr_remove_idle_listener(listener);
|
|
jbe@127
|
1592 moonbr_add_connected_listener(listener);
|
|
jbe@0
|
1593 }
|
|
jbe@0
|
1594 }
|
|
jbe@0
|
1595 /* process input from child processes */
|
|
jbe@0
|
1596 for (i=0; i<moonbr_poll_worker_count; i++) {
|
|
jbe@0
|
1597 if (moonbr_poll_worker_fds[i].revents) {
|
|
jbe@0
|
1598 moonbr_poll_worker_fds[i].revents = 0;
|
|
jbe@0
|
1599 struct moonbr_poll_worker *poll_worker = &moonbr_poll_workers[i];
|
|
jbe@0
|
1600 switch (poll_worker->channel) {
|
|
jbe@0
|
1601 case MOONBR_POLL_WORKER_CONTROLCHANNEL:
|
|
jbe@0
|
1602 moonbr_read_controlchannel(poll_worker->worker);
|
|
jbe@0
|
1603 moonbr_interval_restart(poll_worker->worker, &now);
|
|
jbe@0
|
1604 break;
|
|
jbe@0
|
1605 case MOONBR_POLL_WORKER_ERRORCHANNEL:
|
|
jbe@0
|
1606 moonbr_read_errorchannel(poll_worker->worker);
|
|
jbe@0
|
1607 break;
|
|
jbe@0
|
1608 }
|
|
jbe@0
|
1609 }
|
|
jbe@0
|
1610 }
|
|
jbe@0
|
1611 /* collect dead child processes */
|
|
jbe@0
|
1612 for (worker=pool->first_worker; worker; worker=next_worker) {
|
|
jbe@0
|
1613 next_worker = worker->next_worker; /* extra variable necessary due to changing list */
|
|
jbe@0
|
1614 switch (moonbr_try_destroy_worker(worker)) {
|
|
jbe@0
|
1615 case MOONBR_DESTROY_PREPARE:
|
|
jbe@0
|
1616 pool->use_fork_error_wakeup = 1;
|
|
jbe@0
|
1617 break;
|
|
jbe@0
|
1618 case MOONBR_DESTROY_IDLE_OR_ASSIGNED:
|
|
jbe@0
|
1619 terminated_worker_count++;
|
|
jbe@0
|
1620 break;
|
|
jbe@0
|
1621 }
|
|
jbe@0
|
1622 }
|
|
jbe@0
|
1623 if (!moonbr_shutdown_in_progress) {
|
|
jbe@130
|
1624 /* connect listeners with idle workers */
|
|
jbe@0
|
1625 while (pool->first_connected_listener && pool->first_idle_worker) {
|
|
jbe@0
|
1626 moonbr_connect(pool);
|
|
jbe@0
|
1627 }
|
|
jbe@130
|
1628 /* create new worker processes */
|
|
jbe@130
|
1629 while (
|
|
jbe@130
|
1630 pool->total_worker_count < pool->max_fork && (
|
|
jbe@130
|
1631 pool->unassigned_worker_count < pool->pre_fork ||
|
|
jbe@130
|
1632 pool->total_worker_count < pool->min_fork
|
|
jbe@130
|
1633 )
|
|
jbe@130
|
1634 ) {
|
|
jbe@130
|
1635 if (pool->use_fork_error_wakeup) {
|
|
jbe@130
|
1636 if (timercmp(&pool->fork_error_wakeup, &now, >)) {
|
|
jbe@130
|
1637 moonbr_calc_wait(&wait, &pool->fork_error_wakeup);
|
|
jbe@130
|
1638 break;
|
|
jbe@130
|
1639 }
|
|
jbe@130
|
1640 } else {
|
|
jbe@130
|
1641 if (terminated_worker_count) {
|
|
jbe@130
|
1642 terminated_worker_count--;
|
|
jbe@130
|
1643 } else if (timercmp(&pool->fork_wakeup, &now, >)) {
|
|
jbe@130
|
1644 moonbr_calc_wait(&wait, &pool->fork_wakeup);
|
|
jbe@130
|
1645 break;
|
|
jbe@130
|
1646 }
|
|
jbe@0
|
1647 }
|
|
jbe@130
|
1648 if (moonbr_create_worker(pool, L)) {
|
|
jbe@130
|
1649 /* on error, enforce error delay */
|
|
jbe@130
|
1650 timeradd(&now, &pool->fork_error_delay, &pool->fork_error_wakeup);
|
|
jbe@130
|
1651 pool->use_fork_error_wakeup = 1;
|
|
jbe@130
|
1652 moonbr_calc_wait(&wait, &pool->fork_error_wakeup);
|
|
jbe@130
|
1653 break;
|
|
jbe@130
|
1654 } else {
|
|
jbe@130
|
1655 /* normal fork delay on success */
|
|
jbe@130
|
1656 timeradd(&now, &pool->fork_delay, &pool->fork_wakeup);
|
|
jbe@130
|
1657 timeradd(&now, &pool->fork_error_delay, &pool->fork_error_wakeup);
|
|
jbe@130
|
1658 pool->use_fork_error_wakeup = 0; /* gets set later if error occures during preparation */
|
|
jbe@130
|
1659 }
|
|
jbe@130
|
1660 }
|
|
jbe@130
|
1661 /* terminate excessive worker processes */
|
|
jbe@130
|
1662 while (
|
|
jbe@130
|
1663 pool->total_worker_count > pool->min_fork &&
|
|
jbe@130
|
1664 pool->idle_worker_count > pool->pre_fork
|
|
jbe@130
|
1665 ) {
|
|
jbe@130
|
1666 if (timerisset(&pool->exit_wakeup)) {
|
|
jbe@130
|
1667 if (timercmp(&pool->exit_wakeup, &now, >)) {
|
|
jbe@130
|
1668 moonbr_calc_wait(&wait, &pool->exit_wakeup);
|
|
jbe@130
|
1669 break;
|
|
jbe@130
|
1670 }
|
|
jbe@130
|
1671 moonbr_terminate_idle_worker(moonbr_pop_idle_worker(pool));
|
|
jbe@130
|
1672 timeradd(&now, &pool->exit_delay, &pool->exit_wakeup);
|
|
jbe@130
|
1673 } else {
|
|
jbe@130
|
1674 timeradd(&now, &pool->exit_delay, &pool->exit_wakeup);
|
|
jbe@0
|
1675 break;
|
|
jbe@0
|
1676 }
|
|
jbe@0
|
1677 }
|
|
jbe@130
|
1678 if (!(
|
|
jbe@130
|
1679 pool->total_worker_count > pool->min_fork &&
|
|
jbe@130
|
1680 pool->idle_worker_count > pool->pre_fork
|
|
jbe@130
|
1681 )) {
|
|
jbe@130
|
1682 timerclear(&pool->exit_wakeup); /* timer gets restarted later when there are excessive workers */
|
|
jbe@0
|
1683 }
|
|
jbe@0
|
1684 }
|
|
jbe@0
|
1685 /* optionally output worker count stats */
|
|
jbe@0
|
1686 if (moonbr_stat && pool->worker_count_stat) {
|
|
jbe@0
|
1687 pool->worker_count_stat = 0;
|
|
jbe@0
|
1688 moonbr_log(
|
|
jbe@0
|
1689 LOG_INFO,
|
|
jbe@0
|
1690 "Worker count for pool #%i: %i idle, %i assigned, %i total",
|
|
jbe@0
|
1691 pool->poolnum, pool->idle_worker_count,
|
|
jbe@0
|
1692 pool->total_worker_count - pool->unassigned_worker_count,
|
|
jbe@0
|
1693 pool->total_worker_count);
|
|
jbe@0
|
1694 }
|
|
jbe@0
|
1695 /* calculate wakeup time for interval listeners */
|
|
jbe@0
|
1696 for (listener=pool->first_idle_listener; listener; listener=listener->next_listener) {
|
|
jbe@0
|
1697 if (listener->proto == MOONBR_PROTO_INTERVAL) {
|
|
jbe@125
|
1698 moonbr_calc_wait(&wait, &listener->type_specific.interval.wakeup);
|
|
jbe@0
|
1699 }
|
|
jbe@0
|
1700 }
|
|
jbe@0
|
1701 /* calculate wakeup time for idle workers (only first idle worker is significant) */
|
|
jbe@0
|
1702 if (timerisset(&pool->idle_timeout) && pool->first_idle_worker) {
|
|
jbe@0
|
1703 moonbr_calc_wait(&wait, &pool->first_idle_worker->idle_expiration);
|
|
jbe@0
|
1704 }
|
|
jbe@0
|
1705 }
|
|
jbe@130
|
1706 /* terminate idle workers in case of shutdown and check if shutdown is complete */
|
|
jbe@0
|
1707 if (moonbr_shutdown_in_progress) {
|
|
jbe@195
|
1708 int remaining = 0;
|
|
jbe@0
|
1709 for (pool=moonbr_first_pool; pool; pool=pool->next_pool) {
|
|
jbe@195
|
1710 while (pool->idle_worker_count) {
|
|
jbe@195
|
1711 moonbr_terminate_idle_worker(moonbr_pop_idle_worker(pool));
|
|
jbe@130
|
1712 }
|
|
jbe@195
|
1713 if (pool->first_worker) remaining = 1;
|
|
jbe@0
|
1714 }
|
|
jbe@195
|
1715 if (!remaining) {
|
|
jbe@0
|
1716 moonbr_log(LOG_INFO, "All worker threads have terminated");
|
|
jbe@0
|
1717 moonbr_terminate(MOONBR_EXITCODE_GRACEFUL);
|
|
jbe@0
|
1718 }
|
|
jbe@0
|
1719 }
|
|
jbe@0
|
1720 if (moonbr_poll_refresh_needed) moonbr_poll_refresh();
|
|
jbe@0
|
1721 moonbr_cond_poll = 1;
|
|
jbe@0
|
1722 if (!moonbr_cond_child && !moonbr_cond_terminate && !moonbr_cond_interrupt) {
|
|
jbe@0
|
1723 int timeout;
|
|
jbe@0
|
1724 if (timerisset(&wait)) {
|
|
jbe@0
|
1725 if (timercmp(&wait, &now, <)) {
|
|
jbe@0
|
1726 moonbr_log(LOG_CRIT, "Internal error (should not happen): Future is in the past");
|
|
jbe@0
|
1727 moonbr_terminate_error();
|
|
jbe@0
|
1728 }
|
|
jbe@0
|
1729 timersub(&wait, &now, &wait);
|
|
jbe@0
|
1730 timeout = wait.tv_sec * 1000 + wait.tv_usec / 1000;
|
|
jbe@0
|
1731 } else {
|
|
jbe@0
|
1732 timeout = INFTIM;
|
|
jbe@0
|
1733 }
|
|
jbe@0
|
1734 if (moonbr_debug) {
|
|
jbe@0
|
1735 moonbr_log(LOG_DEBUG, "Waiting for I/O");
|
|
jbe@0
|
1736 }
|
|
jbe@0
|
1737 poll(moonbr_poll_fds, moonbr_poll_fds_count, timeout);
|
|
jbe@0
|
1738 } else {
|
|
jbe@0
|
1739 if (moonbr_debug) {
|
|
jbe@0
|
1740 moonbr_log(LOG_DEBUG, "Do not wait for I/O");
|
|
jbe@0
|
1741 }
|
|
jbe@0
|
1742 }
|
|
jbe@0
|
1743 moonbr_cond_poll = 0;
|
|
jbe@0
|
1744 moonbr_poll_reset_signal();
|
|
jbe@0
|
1745 }
|
|
jbe@0
|
1746 }
|
|
jbe@0
|
1747
|
|
jbe@0
|
1748
|
|
jbe@0
|
1749 /*** Lua interface ***/
|
|
jbe@0
|
1750
|
|
jbe@0
|
1751 static int moonbr_lua_panic(lua_State *L) {
|
|
jbe@0
|
1752 const char *errmsg;
|
|
jbe@0
|
1753 errmsg = lua_tostring(L, -1);
|
|
jbe@0
|
1754 if (!errmsg) {
|
|
jbe@0
|
1755 if (lua_isnoneornil(L, -1)) errmsg = "(error message is nil)";
|
|
jbe@0
|
1756 else errmsg = "(error message is not a string)";
|
|
jbe@0
|
1757 }
|
|
jbe@0
|
1758 if (moonbr_pstate == MOONBR_PSTATE_FORKED) {
|
|
jbe@0
|
1759 fprintf(stderr, "Uncaught Lua error: %s\n", errmsg);
|
|
jbe@0
|
1760 exit(1);
|
|
jbe@0
|
1761 } else {
|
|
jbe@0
|
1762 moonbr_log(LOG_CRIT, "Uncaught Lua error: %s", errmsg);
|
|
jbe@0
|
1763 moonbr_terminate_error();
|
|
jbe@0
|
1764 }
|
|
jbe@0
|
1765 return 0;
|
|
jbe@0
|
1766 }
|
|
jbe@0
|
1767
|
|
jbe@0
|
1768 static int moonbr_addtraceback(lua_State *L) {
|
|
jbe@0
|
1769 luaL_traceback(L, L, luaL_tolstring(L, 1, NULL), 1);
|
|
jbe@0
|
1770 return 1;
|
|
jbe@0
|
1771 }
|
|
jbe@0
|
1772
|
|
jbe@0
|
1773 /* Memory allocator that allows limiting memory consumption */
|
|
jbe@0
|
1774 static void *moonbr_alloc (void *ud, void *ptr, size_t osize, size_t nsize) {
|
|
jbe@0
|
1775 (void)ud; /* not used */
|
|
jbe@0
|
1776 if (nsize == 0) {
|
|
jbe@0
|
1777 if (ptr) {
|
|
jbe@0
|
1778 moonbr_memory_usage -= osize;
|
|
jbe@0
|
1779 free(ptr);
|
|
jbe@0
|
1780 }
|
|
jbe@0
|
1781 return NULL;
|
|
jbe@0
|
1782 } else if (ptr) {
|
|
jbe@0
|
1783 if (
|
|
jbe@0
|
1784 moonbr_memory_limit &&
|
|
jbe@0
|
1785 nsize > osize &&
|
|
jbe@0
|
1786 moonbr_memory_usage + (nsize - osize) > moonbr_memory_limit
|
|
jbe@0
|
1787 ) {
|
|
jbe@0
|
1788 return NULL;
|
|
jbe@0
|
1789 } else {
|
|
jbe@0
|
1790 ptr = realloc(ptr, nsize);
|
|
jbe@0
|
1791 if (ptr) moonbr_memory_usage += nsize - osize;
|
|
jbe@0
|
1792 }
|
|
jbe@0
|
1793 } else {
|
|
jbe@0
|
1794 if (
|
|
jbe@0
|
1795 moonbr_memory_limit &&
|
|
jbe@0
|
1796 moonbr_memory_usage + nsize > moonbr_memory_limit
|
|
jbe@0
|
1797 ) {
|
|
jbe@0
|
1798 return NULL;
|
|
jbe@0
|
1799 } else {
|
|
jbe@0
|
1800 ptr = realloc(ptr, nsize);
|
|
jbe@0
|
1801 if (ptr) moonbr_memory_usage += nsize;
|
|
jbe@0
|
1802 }
|
|
jbe@0
|
1803 }
|
|
jbe@0
|
1804 return ptr;
|
|
jbe@0
|
1805 }
|
|
jbe@0
|
1806
|
|
jbe@66
|
1807 static int moonbr_lua_tonatural(lua_State *L, int idx) {
|
|
jbe@66
|
1808 int isnum;
|
|
jbe@66
|
1809 lua_Number n;
|
|
jbe@66
|
1810 n = lua_tonumberx(L, idx, &isnum);
|
|
jbe@66
|
1811 if (isnum && n>=0 && n<INT_MAX && (lua_Number)(int)n == n) return n;
|
|
jbe@66
|
1812 else return -1;
|
|
jbe@66
|
1813 }
|
|
jbe@66
|
1814
|
|
jbe@66
|
1815 static int moonbr_lua_totimeval(lua_State *L, int idx, struct timeval *value) {
|
|
jbe@66
|
1816 int isnum;
|
|
jbe@66
|
1817 lua_Number n;
|
|
jbe@66
|
1818 n = lua_tonumberx(L, idx, &isnum);
|
|
jbe@66
|
1819 if (isnum && n>=0 && n<=100000000) {
|
|
jbe@66
|
1820 value->tv_sec = n;
|
|
jbe@66
|
1821 value->tv_usec = 1e6 * (n - value->tv_sec);
|
|
jbe@66
|
1822 return 1;
|
|
jbe@66
|
1823 } else {
|
|
jbe@66
|
1824 return 0;
|
|
jbe@66
|
1825 }
|
|
jbe@66
|
1826 }
|
|
jbe@66
|
1827
|
|
jbe@0
|
1828 static int moonbr_timeout(lua_State *L) {
|
|
jbe@0
|
1829 struct itimerval oldval;
|
|
jbe@0
|
1830 if (lua_isnoneornil(L, 1) && lua_isnoneornil(L, 2)) {
|
|
jbe@0
|
1831 getitimer(ITIMER_REAL, &oldval);
|
|
jbe@0
|
1832 } else {
|
|
jbe@0
|
1833 struct itimerval newval = {};
|
|
jbe@39
|
1834 timerclear(&newval.it_interval);
|
|
jbe@39
|
1835 timerclear(&newval.it_value);
|
|
jbe@0
|
1836 if (lua_toboolean(L, 1)) {
|
|
jbe@0
|
1837 luaL_argcheck(
|
|
jbe@0
|
1838 L, moonbr_lua_totimeval(L, 1, &newval.it_value), 1,
|
|
jbe@0
|
1839 "interval in seconds expected"
|
|
jbe@0
|
1840 );
|
|
jbe@0
|
1841 }
|
|
jbe@0
|
1842 if (lua_isnoneornil(L, 2)) {
|
|
jbe@0
|
1843 if (setitimer(ITIMER_REAL, &newval, &oldval)) {
|
|
jbe@0
|
1844 moonbr_log(LOG_CRIT, "Could not set ITIMER_REAL via setitimer()");
|
|
jbe@0
|
1845 moonbr_terminate_error();
|
|
jbe@0
|
1846 }
|
|
jbe@0
|
1847 } else {
|
|
jbe@0
|
1848 getitimer(ITIMER_REAL, &oldval);
|
|
jbe@39
|
1849 if (!timerisset(&oldval.it_value)) {
|
|
jbe@39
|
1850 if (setitimer(ITIMER_REAL, &newval, NULL)) {
|
|
jbe@39
|
1851 moonbr_log(LOG_CRIT, "Could not set ITIMER_REAL via setitimer()");
|
|
jbe@39
|
1852 moonbr_terminate_error();
|
|
jbe@39
|
1853 }
|
|
jbe@39
|
1854 lua_call(L, lua_gettop(L) - 2, LUA_MULTRET);
|
|
jbe@39
|
1855 timerclear(&newval.it_value);
|
|
jbe@39
|
1856 if (setitimer(ITIMER_REAL, &newval, NULL)) {
|
|
jbe@39
|
1857 moonbr_log(LOG_CRIT, "Could not set ITIMER_REAL via setitimer()");
|
|
jbe@39
|
1858 moonbr_terminate_error();
|
|
jbe@39
|
1859 }
|
|
jbe@39
|
1860 } else if (timercmp(&newval.it_value, &oldval.it_value, <)) {
|
|
jbe@0
|
1861 struct itimerval remval;
|
|
jbe@0
|
1862 if (setitimer(ITIMER_REAL, &newval, NULL)) {
|
|
jbe@0
|
1863 moonbr_log(LOG_CRIT, "Could not set ITIMER_REAL via setitimer()");
|
|
jbe@0
|
1864 moonbr_terminate_error();
|
|
jbe@0
|
1865 }
|
|
jbe@0
|
1866 lua_call(L, lua_gettop(L) - 2, LUA_MULTRET);
|
|
jbe@0
|
1867 getitimer(ITIMER_REAL, &remval);
|
|
jbe@0
|
1868 timersub(&oldval.it_value, &newval.it_value, &newval.it_value);
|
|
jbe@0
|
1869 timeradd(&newval.it_value, &remval.it_value, &newval.it_value);
|
|
jbe@0
|
1870 if (setitimer(ITIMER_REAL, &newval, NULL)) {
|
|
jbe@0
|
1871 moonbr_log(LOG_CRIT, "Could not set ITIMER_REAL via setitimer()");
|
|
jbe@0
|
1872 moonbr_terminate_error();
|
|
jbe@0
|
1873 }
|
|
jbe@0
|
1874 } else {
|
|
jbe@0
|
1875 lua_call(L, lua_gettop(L) - 2, LUA_MULTRET);
|
|
jbe@0
|
1876 }
|
|
jbe@0
|
1877 return lua_gettop(L) - 1;
|
|
jbe@0
|
1878 }
|
|
jbe@0
|
1879 }
|
|
jbe@115
|
1880 lua_pushnumber(L, oldval.it_value.tv_sec + 1e-6 * oldval.it_value.tv_usec);
|
|
jbe@0
|
1881 return 1;
|
|
jbe@0
|
1882 }
|
|
jbe@0
|
1883
|
|
jbe@264
|
1884 #define moonbr_listen_init_pool_forkoption(luaname, cname, defval) do { \
|
|
jbe@0
|
1885 lua_getfield(L, 2, luaname); \
|
|
jbe@0
|
1886 pool->cname = lua_isnil(L, -1) ? (defval) : moonbr_lua_tonatural(L, -1); \
|
|
jbe@0
|
1887 } while(0)
|
|
jbe@0
|
1888
|
|
jbe@0
|
1889 #define moonbr_listen_init_pool_timeoption(luaname, cname, defval, defvalu) ( \
|
|
jbe@0
|
1890 lua_getfield(L, 2, luaname), \
|
|
jbe@0
|
1891 lua_isnil(L, -1) ? ( \
|
|
jbe@0
|
1892 pool->cname.tv_sec = (defval), pool->cname.tv_usec = (defvalu), \
|
|
jbe@0
|
1893 1 \
|
|
jbe@0
|
1894 ) : ( \
|
|
jbe@0
|
1895 (lua_isboolean(L, -1) && !lua_toboolean(L, -1)) ? ( \
|
|
jbe@0
|
1896 pool->cname.tv_sec = 0, pool->cname.tv_usec = 0, \
|
|
jbe@0
|
1897 1 \
|
|
jbe@0
|
1898 ) : ( \
|
|
jbe@0
|
1899 moonbr_lua_totimeval(L, -1, &pool->cname) \
|
|
jbe@0
|
1900 ) \
|
|
jbe@0
|
1901 ) \
|
|
jbe@0
|
1902 )
|
|
jbe@0
|
1903
|
|
jbe@0
|
1904 static int moonbr_listen_init_pool(lua_State *L) {
|
|
jbe@0
|
1905 struct moonbr_pool *pool;
|
|
jbe@0
|
1906 const char *proto;
|
|
jbe@274
|
1907 int is_main;
|
|
jbe@0
|
1908 int i;
|
|
jbe@127
|
1909 int dynamic = 0; /* nonzero = listeners exist which require dynamic worker creation */
|
|
jbe@0
|
1910 pool = lua_touserdata(L, 1);
|
|
jbe@0
|
1911 for (i=0; i<pool->listener_count; i++) {
|
|
jbe@0
|
1912 struct moonbr_listener *listener = &pool->listener[i];
|
|
jbe@0
|
1913 lua_settop(L, 2);
|
|
jbe@3
|
1914 #if LUA_VERSION_NUM >= 503
|
|
jbe@3
|
1915 lua_geti(L, 2, i+1);
|
|
jbe@3
|
1916 #else
|
|
jbe@0
|
1917 lua_pushinteger(L, i+1);
|
|
jbe@0
|
1918 lua_gettable(L, 2);
|
|
jbe@3
|
1919 #endif
|
|
jbe@0
|
1920 lua_getfield(L, 3, "proto");
|
|
jbe@0
|
1921 proto = lua_tostring(L, -1);
|
|
jbe@274
|
1922 is_main = !strcmp(proto, "main");
|
|
jbe@274
|
1923 if (proto && (is_main || !strcmp(proto, "interval"))) {
|
|
jbe@0
|
1924 listener->proto = MOONBR_PROTO_INTERVAL;
|
|
jbe@0
|
1925 lua_getfield(L, 3, "name");
|
|
jbe@0
|
1926 {
|
|
jbe@0
|
1927 const char *name = lua_tostring(L, -1);
|
|
jbe@0
|
1928 if (name) {
|
|
jbe@211
|
1929 char *name_dup = strdup(name);
|
|
jbe@211
|
1930 if (!name_dup) {
|
|
jbe@0
|
1931 moonbr_log(LOG_CRIT, "Memory allocation_error");
|
|
jbe@0
|
1932 moonbr_terminate_error();
|
|
jbe@0
|
1933 }
|
|
jbe@211
|
1934 listener->type_specific.interval.name = name_dup;
|
|
jbe@0
|
1935 }
|
|
jbe@0
|
1936 }
|
|
jbe@274
|
1937 if (is_main) {
|
|
jbe@274
|
1938 listener->type_specific.interval.main = 1;
|
|
jbe@274
|
1939 } else {
|
|
jbe@274
|
1940 listener->type_specific.interval.main = 0;
|
|
jbe@274
|
1941 dynamic = 1;
|
|
jbe@274
|
1942 lua_getfield(L, 3, "delay");
|
|
jbe@274
|
1943 if (
|
|
jbe@274
|
1944 !moonbr_lua_totimeval(L, -1, &listener->type_specific.interval.delay) ||
|
|
jbe@274
|
1945 !timerisset(&listener->type_specific.interval.delay)
|
|
jbe@274
|
1946 ) {
|
|
jbe@274
|
1947 luaL_error(L, "No valid interval delay specified; use listen{{proto=\"interval\", delay=...}, ...}");
|
|
jbe@274
|
1948 }
|
|
jbe@274
|
1949 lua_getfield(L, 3, "strict");
|
|
jbe@274
|
1950 if (!lua_isnil(L, -1)) {
|
|
jbe@274
|
1951 if (lua_isboolean(L, -1)) {
|
|
jbe@274
|
1952 if (lua_toboolean(L, -1)) listener->type_specific.interval.strict = 1;
|
|
jbe@274
|
1953 } else {
|
|
jbe@274
|
1954 luaL_error(L, "Option \"strict\" must be a boolean if set; use listen{{proto=\"interval\", strict=true, ...}, ...}");
|
|
jbe@274
|
1955 }
|
|
jbe@0
|
1956 }
|
|
jbe@0
|
1957 }
|
|
jbe@0
|
1958 } else if (proto && !strcmp(proto, "local")) {
|
|
jbe@125
|
1959 const char *path;
|
|
jbe@125
|
1960 const int path_maxlen = (
|
|
jbe@125
|
1961 sizeof(listener->type_specific.socket.addr.addr_un) -
|
|
jbe@125
|
1962 ((void *)listener->type_specific.socket.addr.addr_un.sun_path - (void *)&listener->type_specific.socket.addr.addr_un)
|
|
jbe@125
|
1963 ) - 1; /* one byte for termination */
|
|
jbe@127
|
1964 dynamic = 1;
|
|
jbe@0
|
1965 listener->proto = MOONBR_PROTO_LOCAL;
|
|
jbe@0
|
1966 lua_getfield(L, 3, "path");
|
|
jbe@125
|
1967 path = lua_tostring(L, -1);
|
|
jbe@125
|
1968 if (!path) {
|
|
jbe@125
|
1969 luaL_error(L, "No valid path specified for local socket; use listen{{proto=\"local\", path=...}, ...}");
|
|
jbe@125
|
1970 }
|
|
jbe@125
|
1971 if (strlen(path) > path_maxlen) {
|
|
jbe@125
|
1972 luaL_error(L, "Path name for local socket exceeded maximum length of %i characters", path_maxlen);
|
|
jbe@125
|
1973 }
|
|
jbe@125
|
1974 strcpy(listener->type_specific.socket.addr.addr_un.sun_path, path);
|
|
jbe@125
|
1975 } else if (proto && !strcmp(proto, "tcp")) {
|
|
jbe@125
|
1976 const char *host, *port;
|
|
jbe@125
|
1977 struct addrinfo hints = { 0, };
|
|
jbe@125
|
1978 struct addrinfo *res, *addrinfo;
|
|
jbe@125
|
1979 int errcode;
|
|
jbe@125
|
1980 const char *ip;
|
|
jbe@127
|
1981 dynamic = 1;
|
|
jbe@125
|
1982 lua_getfield(L, 3, "host");
|
|
jbe@125
|
1983 host = lua_isnil(L, -1) ? "::" : lua_tostring(L, -1);
|
|
jbe@125
|
1984 if (!host) {
|
|
jbe@125
|
1985 luaL_error(L, "No host specified; use listen{{proto=\"tcp\", host=...}, ...}");
|
|
jbe@125
|
1986 }
|
|
jbe@125
|
1987 lua_getfield(L, 3, "port");
|
|
jbe@125
|
1988 port = lua_tostring(L, -1);
|
|
jbe@125
|
1989 if (!port) {
|
|
jbe@125
|
1990 luaL_error(L, "No port specified; use listen{{proto=\"tcp\", host=...}, ...}");
|
|
jbe@125
|
1991 }
|
|
jbe@125
|
1992 hints.ai_family = AF_UNSPEC;
|
|
jbe@125
|
1993 hints.ai_socktype = SOCK_STREAM;
|
|
jbe@125
|
1994 hints.ai_protocol = IPPROTO_TCP;
|
|
jbe@125
|
1995 hints.ai_flags = AI_ADDRCONFIG | AI_PASSIVE;
|
|
jbe@125
|
1996 errcode = getaddrinfo(host, port, &hints, &res);
|
|
jbe@125
|
1997 if (errcode) {
|
|
jbe@125
|
1998 freeaddrinfo(res);
|
|
jbe@125
|
1999 if (errcode == EAI_SYSTEM) {
|
|
jbe@213
|
2000 char errmsg[MOONBR_MAXSTRERRORLEN] = MOONBR_STRERROR_R_MSG;
|
|
jbe@125
|
2001 strerror_r(errno, errmsg, MOONBR_MAXSTRERRORLEN); /* use thread-safe call in case child created threads */
|
|
jbe@125
|
2002 luaL_error(L, "Could not resolve host: %s: %s", gai_strerror(errcode), errmsg);
|
|
jbe@125
|
2003 } else {
|
|
jbe@125
|
2004 luaL_error(L, "Could not resolve host: %s", gai_strerror(errcode));
|
|
jbe@0
|
2005 }
|
|
jbe@0
|
2006 }
|
|
jbe@125
|
2007 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
|
|
jbe@125
|
2008 if (addrinfo->ai_family == AF_INET6) goto moonbr_listen_init_pool_found;
|
|
jbe@125
|
2009 }
|
|
jbe@125
|
2010 for (addrinfo=res; addrinfo; addrinfo=addrinfo->ai_next) {
|
|
jbe@125
|
2011 if (addrinfo->ai_family == AF_INET) goto moonbr_listen_init_pool_found;
|
|
jbe@0
|
2012 }
|
|
jbe@125
|
2013 addrinfo = res;
|
|
jbe@125
|
2014 moonbr_listen_init_pool_found:
|
|
jbe@125
|
2015 if (addrinfo->ai_addrlen > sizeof(listener->type_specific.socket.addr)) {
|
|
jbe@125
|
2016 moonbr_log(LOG_CRIT, "Size of ai_addrlen is unexpectedly big (should not happen)");
|
|
jbe@125
|
2017 moonbr_terminate_error();
|
|
jbe@0
|
2018 }
|
|
jbe@125
|
2019 memcpy(&listener->type_specific.socket.addr, addrinfo->ai_addr, addrinfo->ai_addrlen);
|
|
jbe@125
|
2020 listener->type_specific.socket.addrlen = addrinfo->ai_addrlen;
|
|
jbe@125
|
2021 switch (addrinfo->ai_family) {
|
|
jbe@125
|
2022 case AF_INET6:
|
|
jbe@125
|
2023 ip = inet_ntop(
|
|
jbe@125
|
2024 addrinfo->ai_family,
|
|
jbe@125
|
2025 &((struct sockaddr_in6 *)addrinfo->ai_addr)->sin6_addr,
|
|
jbe@125
|
2026 listener->proto_specific.tcp.ip,
|
|
jbe@125
|
2027 INET6_ADDRSTRLEN
|
|
jbe@125
|
2028 );
|
|
jbe@125
|
2029 if (!ip) {
|
|
jbe@125
|
2030 moonbr_log(LOG_CRIT, "System error in inet_ntop call: %s", strerror(errno));
|
|
jbe@125
|
2031 moonbr_terminate_error();
|
|
jbe@125
|
2032 }
|
|
jbe@125
|
2033 listener->proto_specific.tcp.port = ntohs(((struct sockaddr_in6 *)addrinfo->ai_addr)->sin6_port);
|
|
jbe@125
|
2034 break;
|
|
jbe@125
|
2035 case AF_INET:
|
|
jbe@125
|
2036 ip = inet_ntop(
|
|
jbe@125
|
2037 addrinfo->ai_family,
|
|
jbe@125
|
2038 &((struct sockaddr_in *)addrinfo->ai_addr)->sin_addr,
|
|
jbe@125
|
2039 listener->proto_specific.tcp.ip,
|
|
jbe@125
|
2040 INET6_ADDRSTRLEN
|
|
jbe@125
|
2041 );
|
|
jbe@125
|
2042 if (!ip) {
|
|
jbe@125
|
2043 moonbr_log(LOG_CRIT, "System error in inet_ntop call: %s", strerror(errno));
|
|
jbe@125
|
2044 moonbr_terminate_error();
|
|
jbe@125
|
2045 }
|
|
jbe@125
|
2046 listener->proto_specific.tcp.port = ntohs(((struct sockaddr_in *)addrinfo->ai_addr)->sin_port);
|
|
jbe@125
|
2047 break;
|
|
jbe@125
|
2048 default:
|
|
jbe@125
|
2049 strcpy(listener->proto_specific.tcp.ip, "unknown");
|
|
jbe@125
|
2050 listener->proto_specific.tcp.port = 0;
|
|
jbe@0
|
2051 }
|
|
jbe@125
|
2052 listener->proto = MOONBR_PROTO_TCP;
|
|
jbe@125
|
2053 } else if (proto) {
|
|
jbe@125
|
2054 luaL_error(L, "Unknown protocol \"%s\"", proto);
|
|
jbe@125
|
2055 } else {
|
|
jbe@125
|
2056 luaL_error(L, "No valid protocol specified; use listen{{proto=..., ...}, ...}");
|
|
jbe@0
|
2057 }
|
|
jbe@0
|
2058 }
|
|
jbe@0
|
2059 lua_settop(L, 2);
|
|
jbe@127
|
2060 if (dynamic) {
|
|
jbe@127
|
2061 moonbr_listen_init_pool_forkoption("pre_fork", pre_fork, 1);
|
|
jbe@127
|
2062 moonbr_listen_init_pool_forkoption("min_fork", min_fork, pool->pre_fork > 2 ? pool->pre_fork : 2);
|
|
jbe@127
|
2063 moonbr_listen_init_pool_forkoption("max_fork", max_fork, pool->min_fork > 16 ? pool->min_fork : 16);
|
|
jbe@127
|
2064 if (!moonbr_listen_init_pool_timeoption("fork_delay", fork_delay, 0, 250000)) {
|
|
jbe@127
|
2065 luaL_error(L, "Option \"fork_delay\" is expected to be a non-negative number");
|
|
jbe@127
|
2066 }
|
|
jbe@127
|
2067 if (!moonbr_listen_init_pool_timeoption("fork_error_delay", fork_error_delay, 2, 0)) {
|
|
jbe@127
|
2068 luaL_error(L, "Option \"fork_error_delay\" is expected to be a non-negative number");
|
|
jbe@127
|
2069 }
|
|
jbe@127
|
2070 if (!moonbr_listen_init_pool_timeoption("exit_delay", exit_delay, 60, 0)) {
|
|
jbe@127
|
2071 luaL_error(L, "Option \"exit_delay\" is expected to be a non-negative number");
|
|
jbe@127
|
2072 }
|
|
jbe@127
|
2073 if (timercmp(&pool->fork_error_delay, &pool->fork_delay, <)) {
|
|
jbe@127
|
2074 pool->fork_error_delay = pool->fork_delay;
|
|
jbe@127
|
2075 }
|
|
jbe@127
|
2076 if (!moonbr_listen_init_pool_timeoption("idle_timeout", idle_timeout, 0, 0)) {
|
|
jbe@127
|
2077 luaL_error(L, "Option \"idle_timeout\" is expected to be a non-negative number");
|
|
jbe@127
|
2078 }
|
|
jbe@127
|
2079 } else {
|
|
jbe@127
|
2080 pool->pre_fork = 0;
|
|
jbe@127
|
2081 pool->min_fork = pool->listener_count;
|
|
jbe@127
|
2082 pool->max_fork = pool->listener_count;
|
|
jbe@0
|
2083 }
|
|
jbe@0
|
2084 lua_getfield(L, 2, "memory_limit");
|
|
jbe@0
|
2085 if (!lua_isnil(L, -1)) {
|
|
jbe@0
|
2086 int isnum;
|
|
jbe@0
|
2087 lua_Number n;
|
|
jbe@0
|
2088 n = lua_tonumberx(L, -1, &isnum);
|
|
jbe@0
|
2089 if (n < 0 || !isnum) {
|
|
jbe@0
|
2090 luaL_error(L, "Option \"memory_limit\" is expected to be a non-negative number");
|
|
jbe@0
|
2091 }
|
|
jbe@0
|
2092 pool->memory_limit = n;
|
|
jbe@0
|
2093 }
|
|
jbe@0
|
2094 lua_settop(L, 2);
|
|
jbe@0
|
2095 lua_getfield(L, 2, "prepare");
|
|
jbe@0
|
2096 if (!lua_isnil(L, -1) && !lua_isfunction(L, -1)) {
|
|
jbe@0
|
2097 luaL_error(L, "Option \"prepare\" must be nil or a function");
|
|
jbe@0
|
2098 }
|
|
jbe@0
|
2099 lua_rawsetp(L, LUA_REGISTRYINDEX, moonbr_luakey_prepare_func(pool));
|
|
jbe@0
|
2100 lua_getfield(L, 2, "connect");
|
|
jbe@0
|
2101 if (!lua_isfunction(L, -1)) {
|
|
jbe@0
|
2102 luaL_error(L, "Option \"connect\" must be a function; use listen{{...}, {...}, connect=function(socket) ... end, ...}");
|
|
jbe@0
|
2103 }
|
|
jbe@0
|
2104 lua_rawsetp(L, LUA_REGISTRYINDEX, moonbr_luakey_connect_func(pool));
|
|
jbe@0
|
2105 lua_getfield(L, 2, "finish");
|
|
jbe@0
|
2106 if (!lua_isnil(L, -1) && !lua_isfunction(L, -1)) {
|
|
jbe@0
|
2107 luaL_error(L, "Option \"finish\" must be nil or a function");
|
|
jbe@0
|
2108 }
|
|
jbe@0
|
2109 lua_rawsetp(L, LUA_REGISTRYINDEX, moonbr_luakey_finish_func(pool));
|
|
jbe@0
|
2110 return 0;
|
|
jbe@0
|
2111 }
|
|
jbe@0
|
2112
|
|
jbe@0
|
2113 static int moonbr_listen(lua_State *L) {
|
|
jbe@0
|
2114 struct moonbr_pool *pool;
|
|
jbe@0
|
2115 lua_Integer listener_count;
|
|
jbe@0
|
2116 if (moonbr_booted) luaL_error(L, "Moonbridge bootup is already complete");
|
|
jbe@0
|
2117 luaL_checktype(L, 1, LUA_TTABLE);
|
|
jbe@0
|
2118 listener_count = luaL_len(L, 1);
|
|
jbe@0
|
2119 if (!listener_count) luaL_error(L, "No listen ports specified; use listen{{proto=..., port=...},...}");
|
|
jbe@0
|
2120 if (listener_count > 100) luaL_error(L, "Too many listeners");
|
|
jbe@0
|
2121 pool = moonbr_create_pool(listener_count);
|
|
jbe@0
|
2122 lua_pushcfunction(L, moonbr_listen_init_pool);
|
|
jbe@0
|
2123 lua_pushlightuserdata(L, pool);
|
|
jbe@0
|
2124 lua_pushvalue(L, 1);
|
|
jbe@0
|
2125 if (lua_pcall(L, 2, 0, 0)) goto moonbr_listen_error;
|
|
jbe@0
|
2126 {
|
|
jbe@0
|
2127 int i;
|
|
jbe@0
|
2128 i = moonbr_start_pool(pool);
|
|
jbe@0
|
2129 if (i >= 0) {
|
|
jbe@125
|
2130 lua_pushfstring(L, "Could not initialize listener #%d: %s", i+1, strerror(errno));
|
|
jbe@125
|
2131 moonbr_listen_error:
|
|
jbe@125
|
2132 moonbr_destroy_pool(pool);
|
|
jbe@125
|
2133 lua_pushnil(L);
|
|
jbe@125
|
2134 lua_rawsetp(L, LUA_REGISTRYINDEX, moonbr_luakey_prepare_func(pool));
|
|
jbe@125
|
2135 lua_pushnil(L);
|
|
jbe@125
|
2136 lua_rawsetp(L, LUA_REGISTRYINDEX, moonbr_luakey_connect_func(pool));
|
|
jbe@125
|
2137 lua_pushnil(L);
|
|
jbe@125
|
2138 lua_rawsetp(L, LUA_REGISTRYINDEX, moonbr_luakey_finish_func(pool));
|
|
jbe@125
|
2139 lua_error(L);
|
|
jbe@0
|
2140 }
|
|
jbe@0
|
2141 }
|
|
jbe@0
|
2142 return 0;
|
|
jbe@0
|
2143 }
|
|
jbe@0
|
2144
|
|
jbe@0
|
2145
|
|
jbe@9
|
2146 /*** Function to modify Lua's library path and/or cpath ***/
|
|
jbe@9
|
2147
|
|
jbe@9
|
2148 #if defined(MOONBR_LUA_PATH) || defined(MOONBR_LUA_CPATH)
|
|
jbe@9
|
2149 static void moonbr_modify_path(lua_State *L, char *key, char *value) {
|
|
jbe@9
|
2150 int stackbase;
|
|
jbe@9
|
2151 stackbase = lua_gettop(L);
|
|
jbe@9
|
2152 lua_getglobal(L, "package");
|
|
jbe@9
|
2153 lua_getfield(L, stackbase+1, key);
|
|
jbe@9
|
2154 {
|
|
jbe@9
|
2155 const char *current_str;
|
|
jbe@9
|
2156 size_t current_strlen;
|
|
jbe@9
|
2157 luaL_Buffer buf;
|
|
jbe@9
|
2158 current_str = lua_tolstring(L, stackbase+2, ¤t_strlen);
|
|
jbe@9
|
2159 luaL_buffinit(L, &buf);
|
|
jbe@9
|
2160 if (current_str) {
|
|
jbe@9
|
2161 lua_pushvalue(L, stackbase+2);
|
|
jbe@9
|
2162 luaL_addvalue(&buf);
|
|
jbe@9
|
2163 if (current_strlen && current_str[current_strlen-1] != ';') {
|
|
jbe@9
|
2164 luaL_addchar(&buf, ';');
|
|
jbe@9
|
2165 }
|
|
jbe@9
|
2166 }
|
|
jbe@9
|
2167 luaL_addstring(&buf, value);
|
|
jbe@9
|
2168 luaL_pushresult(&buf);
|
|
jbe@9
|
2169 }
|
|
jbe@9
|
2170 lua_setfield(L, stackbase+1, key);
|
|
jbe@9
|
2171 lua_settop(L, stackbase);
|
|
jbe@9
|
2172 }
|
|
jbe@9
|
2173 #endif
|
|
jbe@9
|
2174
|
|
jbe@9
|
2175
|
|
jbe@0
|
2176 /*** Main function and command line invokation ***/
|
|
jbe@0
|
2177
|
|
jbe@0
|
2178 static void moonbr_usage(int err, const char *cmd) {
|
|
jbe@0
|
2179 FILE *out;
|
|
jbe@0
|
2180 out = err ? stderr : stdout;
|
|
jbe@0
|
2181 if (!cmd) cmd = "moonbridge";
|
|
jbe@0
|
2182 fprintf(out, "Get this help message: %s {-h|--help}\n", cmd);
|
|
jbe@0
|
2183 fprintf(out, "Usage: %s \\\n", cmd);
|
|
jbe@0
|
2184 fprintf(out, " [-b|--background] \\\n");
|
|
jbe@0
|
2185 fprintf(out, " [-d|--debug] \\\n");
|
|
jbe@0
|
2186 fprintf(out, " [-f|--logfacility {DAEMON|USER|0|1|...|7}] \\\n");
|
|
jbe@0
|
2187 fprintf(out, " [-i|--logident <syslog ident> \\\n");
|
|
jbe@0
|
2188 fprintf(out, " [-l|--logfile <logfile>] \\\n");
|
|
jbe@0
|
2189 fprintf(out, " [-p|--pidfile <pidfile>] \\\n");
|
|
jbe@0
|
2190 fprintf(out, " [-s|--stats] \\\n");
|
|
jbe@2
|
2191 fprintf(out, " -- <Lua script> [<cmdline options for Lua script>]\n");
|
|
jbe@0
|
2192 exit(err);
|
|
jbe@0
|
2193 }
|
|
jbe@0
|
2194
|
|
jbe@0
|
2195 #define moonbr_usage_error() moonbr_usage(MOONBR_EXITCODE_CMDLINEERROR, argc ? argv[0] : NULL)
|
|
jbe@0
|
2196
|
|
jbe@0
|
2197 int main(int argc, char **argv) {
|
|
jbe@0
|
2198 {
|
|
jbe@0
|
2199 int daemonize = 0;
|
|
jbe@0
|
2200 int log_facility = LOG_USER;
|
|
jbe@0
|
2201 const char *log_ident = "moonbridge";
|
|
jbe@0
|
2202 const char *log_filename = NULL;
|
|
jbe@0
|
2203 const char *pid_filename = NULL;
|
|
jbe@0
|
2204 int option;
|
|
jbe@0
|
2205 struct option longopts[] = {
|
|
jbe@0
|
2206 { "background", no_argument, NULL, 'b' },
|
|
jbe@0
|
2207 { "debug", no_argument, NULL, 'd' },
|
|
jbe@0
|
2208 { "logfacility", required_argument, NULL, 'f' },
|
|
jbe@0
|
2209 { "help", no_argument, NULL, 'h' },
|
|
jbe@0
|
2210 { "logident", required_argument, NULL, 'i' },
|
|
jbe@0
|
2211 { "logfile", required_argument, NULL, 'l' },
|
|
jbe@0
|
2212 { "pidfile", required_argument, NULL, 'p' },
|
|
jbe@231
|
2213 { "stats", no_argument, NULL, 's' },
|
|
jbe@231
|
2214 { NULL, 0, NULL, 0 }
|
|
jbe@0
|
2215 };
|
|
jbe@0
|
2216 while ((option = getopt_long(argc, argv, "bdf:hi:l:p:s", longopts, NULL)) != -1) {
|
|
jbe@0
|
2217 switch (option) {
|
|
jbe@0
|
2218 case 'b':
|
|
jbe@0
|
2219 daemonize = 1;
|
|
jbe@0
|
2220 break;
|
|
jbe@0
|
2221 case 'd':
|
|
jbe@0
|
2222 moonbr_debug = 1;
|
|
jbe@0
|
2223 moonbr_stat = 1;
|
|
jbe@0
|
2224 break;
|
|
jbe@0
|
2225 case 'f':
|
|
jbe@0
|
2226 if (!strcmp(optarg, "DAEMON")) {
|
|
jbe@0
|
2227 log_facility = LOG_DAEMON;
|
|
jbe@0
|
2228 } else if (!strcmp(optarg, "USER")) {
|
|
jbe@0
|
2229 log_facility = LOG_USER;
|
|
jbe@0
|
2230 } else if (!strcmp(optarg, "0")) {
|
|
jbe@0
|
2231 log_facility = LOG_LOCAL0;
|
|
jbe@0
|
2232 } else if (!strcmp(optarg, "1")) {
|
|
jbe@0
|
2233 log_facility = LOG_LOCAL1;
|
|
jbe@0
|
2234 } else if (!strcmp(optarg, "2")) {
|
|
jbe@0
|
2235 log_facility = LOG_LOCAL2;
|
|
jbe@0
|
2236 } else if (!strcmp(optarg, "3")) {
|
|
jbe@0
|
2237 log_facility = LOG_LOCAL3;
|
|
jbe@0
|
2238 } else if (!strcmp(optarg, "4")) {
|
|
jbe@0
|
2239 log_facility = LOG_LOCAL4;
|
|
jbe@0
|
2240 } else if (!strcmp(optarg, "5")) {
|
|
jbe@0
|
2241 log_facility = LOG_LOCAL5;
|
|
jbe@0
|
2242 } else if (!strcmp(optarg, "6")) {
|
|
jbe@0
|
2243 log_facility = LOG_LOCAL6;
|
|
jbe@0
|
2244 } else if (!strcmp(optarg, "7")) {
|
|
jbe@0
|
2245 log_facility = LOG_LOCAL7;
|
|
jbe@0
|
2246 } else {
|
|
jbe@0
|
2247 moonbr_usage_error();
|
|
jbe@0
|
2248 }
|
|
jbe@0
|
2249 moonbr_use_syslog = 1;
|
|
jbe@0
|
2250 break;
|
|
jbe@0
|
2251 case 'h':
|
|
jbe@0
|
2252 moonbr_usage(MOONBR_EXITCODE_GRACEFUL, argv[0]);
|
|
jbe@0
|
2253 break;
|
|
jbe@0
|
2254 case 'i':
|
|
jbe@0
|
2255 log_ident = optarg;
|
|
jbe@0
|
2256 moonbr_use_syslog = 1;
|
|
jbe@0
|
2257 break;
|
|
jbe@0
|
2258 case 'l':
|
|
jbe@0
|
2259 log_filename = optarg;
|
|
jbe@0
|
2260 break;
|
|
jbe@0
|
2261 case 'p':
|
|
jbe@0
|
2262 pid_filename = optarg;
|
|
jbe@0
|
2263 break;
|
|
jbe@0
|
2264 case 's':
|
|
jbe@0
|
2265 moonbr_stat = 1;
|
|
jbe@0
|
2266 break;
|
|
jbe@0
|
2267 default:
|
|
jbe@0
|
2268 moonbr_usage_error();
|
|
jbe@0
|
2269 }
|
|
jbe@0
|
2270 }
|
|
jbe@2
|
2271 if (argc - optind < 1) moonbr_usage_error();
|
|
jbe@0
|
2272 if (pid_filename) {
|
|
jbe@0
|
2273 pid_t otherpid;
|
|
jbe@0
|
2274 while ((moonbr_pidfh = pidfile_open(pid_filename, 0644, &otherpid)) == NULL) {
|
|
jbe@0
|
2275 if (errno == EEXIST) {
|
|
jbe@0
|
2276 if (otherpid == -1) {
|
|
jbe@0
|
2277 fprintf(stderr, "PID file \"%s\" is already locked\n", pid_filename);
|
|
jbe@0
|
2278 } else {
|
|
jbe@0
|
2279 fprintf(stderr, "PID file \"%s\" is already locked by process with PID: %i\n", pid_filename, (int)otherpid);
|
|
jbe@0
|
2280 }
|
|
jbe@0
|
2281 exit(MOONBR_EXITCODE_ALREADYRUNNING);
|
|
jbe@0
|
2282 } else if (errno != EINTR) {
|
|
jbe@0
|
2283 fprintf(stderr, "Could not write PID file \"%s\": %s\n", pid_filename, strerror(errno));
|
|
jbe@0
|
2284 exit(MOONBR_EXITCODE_STARTUPERROR);
|
|
jbe@0
|
2285 }
|
|
jbe@0
|
2286 }
|
|
jbe@0
|
2287 }
|
|
jbe@0
|
2288 if (log_filename) {
|
|
jbe@0
|
2289 int logfd;
|
|
jbe@0
|
2290 while (
|
|
jbe@0
|
2291 ( logfd = flopen(
|
|
jbe@0
|
2292 log_filename,
|
|
jbe@0
|
2293 O_WRONLY|O_NONBLOCK|O_CREAT|O_APPEND|O_CLOEXEC,
|
|
jbe@0
|
2294 0640
|
|
jbe@0
|
2295 )
|
|
jbe@0
|
2296 ) < 0
|
|
jbe@0
|
2297 ) {
|
|
jbe@0
|
2298 if (errno == EWOULDBLOCK) {
|
|
jbe@0
|
2299 fprintf(stderr, "Logfile \"%s\" is locked\n", log_filename);
|
|
jbe@0
|
2300 exit(MOONBR_EXITCODE_ALREADYRUNNING);
|
|
jbe@0
|
2301 } else if (errno != EINTR) {
|
|
jbe@0
|
2302 fprintf(stderr, "Could not open logfile \"%s\": %s\n", log_filename, strerror(errno));
|
|
jbe@0
|
2303 exit(MOONBR_EXITCODE_STARTUPERROR);
|
|
jbe@0
|
2304 }
|
|
jbe@0
|
2305 }
|
|
jbe@0
|
2306 moonbr_logfile = fdopen(logfd, "a");
|
|
jbe@0
|
2307 if (!moonbr_logfile) {
|
|
jbe@0
|
2308 fprintf(stderr, "Could not open write stream to logfile \"%s\": %s\n", log_filename, strerror(errno));
|
|
jbe@0
|
2309 exit(MOONBR_EXITCODE_STARTUPERROR);
|
|
jbe@0
|
2310 }
|
|
jbe@0
|
2311 }
|
|
jbe@0
|
2312 if (daemonize == 0 && !moonbr_logfile) moonbr_logfile = stderr;
|
|
jbe@0
|
2313 if (moonbr_logfile) setlinebuf(moonbr_logfile);
|
|
jbe@0
|
2314 else moonbr_use_syslog = 1;
|
|
jbe@0
|
2315 if (moonbr_use_syslog) openlog(log_ident, LOG_NDELAY | LOG_PID, log_facility);
|
|
jbe@0
|
2316 if (daemonize) {
|
|
jbe@0
|
2317 if (daemon(1, 0)) {
|
|
jbe@0
|
2318 moonbr_log(LOG_ERR, "Could not daemonize moonbridge process");
|
|
jbe@0
|
2319 moonbr_terminate_error();
|
|
jbe@0
|
2320 }
|
|
jbe@0
|
2321 }
|
|
jbe@0
|
2322 }
|
|
jbe@0
|
2323 moonbr_log(LOG_NOTICE, "Starting moonbridge server");
|
|
jbe@0
|
2324 if (moonbr_pidfh && pidfile_write(moonbr_pidfh)) {
|
|
jbe@0
|
2325 moonbr_log(LOG_ERR, "Could not write pidfile (after locking)");
|
|
jbe@0
|
2326 }
|
|
jbe@0
|
2327 {
|
|
jbe@0
|
2328 lua_State *L;
|
|
jbe@0
|
2329 L = lua_newstate(moonbr_alloc, NULL);
|
|
jbe@0
|
2330 if (!L) {
|
|
jbe@0
|
2331 moonbr_log(LOG_CRIT, "Could not initialize Lua state");
|
|
jbe@0
|
2332 moonbr_terminate_error();
|
|
jbe@0
|
2333 }
|
|
jbe@0
|
2334 lua_atpanic(L, moonbr_lua_panic);
|
|
jbe@58
|
2335 lua_pushliteral(L, MOONBR_VERSION_STRING);
|
|
jbe@58
|
2336 lua_setglobal(L, "_MOONBRIDGE_VERSION");
|
|
jbe@0
|
2337 luaL_openlibs(L);
|
|
jbe@89
|
2338 luaL_requiref(L, "moonbridge_io", luaopen_moonbridge_io, 1);
|
|
jbe@89
|
2339 lua_pop(L, 1);
|
|
jbe@8
|
2340 #ifdef MOONBR_LUA_PATH
|
|
jbe@9
|
2341 moonbr_modify_path(L, "path", MOONBR_LUA_PATH);
|
|
jbe@9
|
2342 #endif
|
|
jbe@9
|
2343 #ifdef MOONBR_LUA_CPATH
|
|
jbe@9
|
2344 moonbr_modify_path(L, "cpath", MOONBR_LUA_CPATH);
|
|
jbe@8
|
2345 #endif
|
|
jbe@0
|
2346 lua_pushcfunction(L, moonbr_timeout);
|
|
jbe@0
|
2347 lua_setglobal(L, "timeout");
|
|
jbe@0
|
2348 lua_pushcfunction(L, moonbr_listen);
|
|
jbe@0
|
2349 lua_setglobal(L, "listen");
|
|
jbe@17
|
2350 lua_pushcfunction(L, moonbr_addtraceback); /* on stack position 1 */
|
|
jbe@2
|
2351 moonbr_log(LOG_INFO, "Loading \"%s\"", argv[optind]);
|
|
jbe@2
|
2352 if (luaL_loadfile(L, argv[optind])) {
|
|
jbe@2
|
2353 moonbr_log(LOG_ERR, "Error while loading \"%s\": %s", argv[optind], lua_tostring(L, -1));
|
|
jbe@2
|
2354 moonbr_terminate_error();
|
|
jbe@2
|
2355 }
|
|
jbe@2
|
2356 { int i; for (i=optind+1; i<argc; i++) lua_pushstring(L, argv[i]); }
|
|
jbe@2
|
2357 if (lua_pcall(L, argc-(optind+1), 0, 1)) {
|
|
jbe@2
|
2358 moonbr_log(LOG_ERR, "Error while executing \"%s\": %s", argv[optind], lua_tostring(L, -1));
|
|
jbe@2
|
2359 moonbr_terminate_error();
|
|
jbe@0
|
2360 }
|
|
jbe@6
|
2361 if (!moonbr_first_pool) {
|
|
jbe@6
|
2362 moonbr_log(LOG_WARNING, "No listener initialized.");
|
|
jbe@6
|
2363 moonbr_terminate_error();
|
|
jbe@6
|
2364 }
|
|
jbe@0
|
2365 lua_getglobal(L, "listen");
|
|
jbe@0
|
2366 lua_pushcfunction(L, moonbr_listen);
|
|
jbe@0
|
2367 if (lua_compare(L, -2, -1, LUA_OPEQ)) {
|
|
jbe@0
|
2368 lua_pushnil(L);
|
|
jbe@0
|
2369 lua_setglobal(L, "listen");
|
|
jbe@0
|
2370 }
|
|
jbe@0
|
2371 lua_settop(L, 1);
|
|
jbe@223
|
2372 lua_gc(L, LUA_GCCOLLECT, 0); /* collect garbage before forking later */
|
|
jbe@0
|
2373 moonbr_run(L);
|
|
jbe@0
|
2374 }
|
|
jbe@0
|
2375 return 0;
|
|
jbe@0
|
2376 }
|
|
jbe@0
|
2377
|