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annotate libfdcore/core.c @ 691:78b665400097

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Cleanup all pthread_cleanup_push / pop pairs so that pop is always called after push, or ASSERT(0) is some grave errors
author Sebastien Decugis <sdecugis@nict.go.jp>
date Thu, 20 Jan 2011 19:44:27 +0900
parents 933d098fc75d
children 16c373df0947
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
658
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1 /*********************************************************************************************************
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2 * Software License Agreement (BSD License) *
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3 * Author: Sebastien Decugis <sdecugis@nict.go.jp> *
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4 * *
662
2e94ef0515d7 Updated copyright information
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5 * Copyright (c) 2011, WIDE Project and NICT *
658
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6 * All rights reserved. *
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7 * *
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8 * Redistribution and use of this software in source and binary forms, with or without modification, are *
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9 * permitted provided that the following conditions are met: *
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10 * *
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11 * * Redistributions of source code must retain the above *
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12 * copyright notice, this list of conditions and the *
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13 * following disclaimer. *
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14 * *
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15 * * Redistributions in binary form must reproduce the above *
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16 * copyright notice, this list of conditions and the *
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17 * following disclaimer in the documentation and/or other *
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18 * materials provided with the distribution. *
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19 * *
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20 * * Neither the name of the WIDE Project or NICT nor the *
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21 * names of its contributors may be used to endorse or *
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22 * promote products derived from this software without *
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23 * specific prior written permission of WIDE Project and *
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24 * NICT. *
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25 * *
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26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
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27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
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28 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
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29 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *
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30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS *
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31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR *
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32 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF *
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33 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
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34 *********************************************************************************************************/
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35
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36 #include "fdcore-internal.h"
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37
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38 #include <gcrypt.h>
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39
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40 /* The static configuration structure */
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41 static struct fd_config g_conf;
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42 struct fd_config * fd_g_config = NULL;
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43
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44 /* gcrypt functions to support posix threads */
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45 GCRY_THREAD_OPTION_PTHREAD_IMPL;
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46
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47 /* Signal extensions when the framework is completly initialized */
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48 static int is_ready = 0;
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49 static pthread_mutex_t is_ready_mtx = PTHREAD_MUTEX_INITIALIZER;
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50 static pthread_cond_t is_ready_cnd = PTHREAD_COND_INITIALIZER;
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51
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52 static int signal_framework_ready(void)
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53 {
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54 TRACE_ENTRY("");
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55 CHECK_POSIX( pthread_mutex_lock( &is_ready_mtx ) );
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56 is_ready = 1;
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57 CHECK_POSIX( pthread_cond_broadcast( &is_ready_cnd ) );
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58 CHECK_POSIX( pthread_mutex_unlock( &is_ready_mtx ) );
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59 return 0;
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60 }
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61
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62 /* Thread that process incoming events on the main queue -- and terminates the framework when requested */
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63 static pthread_t core_runner = (pthread_t)NULL;
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64 enum core_mode {
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65 CORE_MODE_EVENTS,
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66 CORE_MODE_IMMEDIATE
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67 };
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68
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69 static void * core_runner_thread(void * arg)
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70 {
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71 fd_log_threadname("Core Runner");
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72
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73 if (arg && (*(int *)arg == CORE_MODE_IMMEDIATE))
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74 goto end;
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75
658
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76 /* Handle events incoming on the main event queue */
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77 while (1) {
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78 int code; size_t sz; void * data;
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79 CHECK_FCT_DO( fd_event_get(fd_g_config->cnf_main_ev, &code, &sz, &data), break );
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80 switch (code) {
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81 case FDEV_DUMP_DICT:
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82 fd_dict_dump(fd_g_config->cnf_dict);
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83 break;
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84
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85 case FDEV_DUMP_EXT:
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86 fd_ext_dump();
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87 break;
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88
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89 case FDEV_DUMP_SERV:
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90 fd_servers_dump();
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91 break;
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92
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93 case FDEV_DUMP_QUEUES:
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94 fd_fifo_dump(0, "Incoming messages", fd_g_incoming, fd_msg_dump_walk);
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95 fd_fifo_dump(0, "Outgoing messages", fd_g_outgoing, fd_msg_dump_walk);
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96 fd_fifo_dump(0, "Local messages", fd_g_local, fd_msg_dump_walk);
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97 break;
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98
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99 case FDEV_DUMP_CONFIG:
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100 fd_conf_dump();
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101 break;
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102
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103 case FDEV_DUMP_PEERS:
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104 fd_peer_dump_list(FULL);
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105 break;
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106
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107 case FDEV_TRIGGER:
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108 {
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109 int tv, *p;
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110 CHECK_PARAMS_DO( sz == sizeof(int),
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111 {
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112 TRACE_DEBUG(NONE, "Internal error: got FDEV_TRIGGER without trigger value!");
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113 ASSERT(0);
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114 goto end;
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115 } );
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116 p = data;
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117 tv = *p;
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118 free(p);
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119 CHECK_FCT_DO( fd_event_trig_call_cb(tv), goto end );
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120 }
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121 break;
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122
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123 case FDEV_TERMINATE:
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124 goto end;
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125
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126 default:
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127 TRACE_DEBUG(INFO, "Unexpected event in the main event queue (%d), ignored.\n", code);
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128 }
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129 }
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130
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131 end:
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132 TRACE_DEBUG(INFO, FD_PROJECT_BINARY " framework is stopping...");
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133
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134 /* cleanups */
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135 CHECK_FCT_DO( fd_servers_stop(), /* Stop accepting new connections */ );
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136 CHECK_FCT_DO( fd_rtdisp_cleanstop(), /* Stop dispatch thread(s) after a clean loop if possible */ );
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137 CHECK_FCT_DO( fd_peer_fini(), /* Stop all connections */ );
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138 CHECK_FCT_DO( fd_rtdisp_fini(), /* Stop routing threads and destroy routing queues */ );
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139
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140 CHECK_FCT_DO( fd_ext_term(), /* Cleanup all extensions */ );
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141 CHECK_FCT_DO( fd_rtdisp_cleanup(), /* destroy remaining handlers */ );
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142
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143 GNUTLS_TRACE( gnutls_global_deinit() );
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144
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145 CHECK_FCT_DO( fd_conf_deinit(), );
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146
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147 CHECK_FCT_DO( fd_event_trig_fini(), );
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148
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149 fd_log_debug(FD_PROJECT_BINARY " framework is terminated.\n");
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150
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151 fd_libproto_fini();
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152
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153 return NULL;
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154 }
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155
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156 /*********************************/
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157 /* Public interfaces */
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158
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159 /* Return a string describing the version of the library */
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160 const char *fd_core_version(void)
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161 {
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162 return _stringize(FD_PROJECT_VERSION_MAJOR) "." _stringize(FD_PROJECT_VERSION_MINOR) "." _stringize(FD_PROJECT_VERSION_REV);
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163 }
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164
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165 /* Initialize the libfdcore internals. This also initializes libfdproto */
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166 int fd_core_initialize(void)
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167 {
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168 int ret;
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169
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170 /* Initialize the library -- must come first since it initializes the debug facility */
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171 ret = fd_libproto_init();
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172 if (ret != 0) {
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173 fprintf(stderr, "Unable to initialize libfdproto: %s\n", strerror(ret));
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174 return ret;
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175 }
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176
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177 TRACE_DEBUG(INFO, "libfdproto initialized.");
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178
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179 /* Name this thread */
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180 fd_log_threadname("Main");
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181
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182 /* Initialize gcrypt and gnutls */
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183 GNUTLS_TRACE( (void) gcry_control (GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread) );
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184 GNUTLS_TRACE( (void) gcry_control (GCRYCTL_ENABLE_QUICK_RANDOM, 0) );
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185 CHECK_GNUTLS_DO( gnutls_global_init(), return EINVAL );
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186 if ( ! gnutls_check_version(GNUTLS_VERSION) ) {
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187 fprintf(stderr, "The GNUTLS library is too old; found '%s', need '" GNUTLS_VERSION "'\n", gnutls_check_version(NULL));
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188 return EINVAL;
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189 } else {
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190 TRACE_DEBUG(INFO, "libgnutls '%s', libgcrypt '%s', initialized.", gnutls_check_version(NULL), gcry_check_version(NULL) );
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191 }
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192
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193 /* Initialize the config with default values */
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194 memset(&g_conf, 0, sizeof(struct fd_config));
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195 fd_g_config = &g_conf;
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196 CHECK_FCT( fd_conf_init() );
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197
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198 /* Initialize the message logging facility */
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199 fd_msg_log_init(fd_g_config->cnf_dict);
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200
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201 /* Add definitions of the base protocol */
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202 CHECK_FCT( fd_dict_base_protocol(fd_g_config->cnf_dict) );
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203
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204 /* Initialize some modules */
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205 CHECK_FCT( fd_queues_init() );
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206 CHECK_FCT( fd_msg_init() );
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207 CHECK_FCT( fd_sess_start() );
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208 CHECK_FCT( fd_p_expi_init() );
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209
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210 /* Next thing is to parse the config, leave this for a different function */
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211 return 0;
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212 }
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213
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214 /* Parse the freeDiameter.conf configuration file, load the extensions */
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215 int fd_core_parseconf(char * conffile)
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216 {
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217 TRACE_ENTRY("%p", conffile);
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218
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219 /* Conf file */
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220 if (conffile)
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221 fd_g_config->cnf_file = conffile; /* otherwise, we use the default name */
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222
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223 CHECK_FCT( fd_conf_parse() );
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224
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225 /* The following module use data from the configuration */
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226 CHECK_FCT( fd_rtdisp_init() );
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227
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228 /* Now, load all dynamic extensions */
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229 CHECK_FCT( fd_ext_load() );
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230
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231 /* Display configuration */
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232 fd_conf_dump();
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233
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234 /* Display registered triggers for FDEV_TRIGGER */
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235 fd_event_trig_dump();
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236
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237 return 0;
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238 }
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239
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240 /* For threads that would need to wait complete start of the framework (ex: in extensions) */
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241 int fd_core_waitstartcomplete(void)
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242 {
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243 int ret = 0;
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244
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245 TRACE_ENTRY("");
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246
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247 CHECK_POSIX( pthread_mutex_lock( &is_ready_mtx ) );
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248 pthread_cleanup_push( fd_cleanup_mutex, &is_ready_mtx );
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249
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250 while (!ret && !is_ready) {
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251 CHECK_POSIX_DO( ret = pthread_cond_wait( &is_ready_cnd, &is_ready_mtx ), );
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252 }
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253
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254 pthread_cleanup_pop( 0 );
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255 CHECK_POSIX( pthread_mutex_unlock( &is_ready_mtx ) );
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256
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257 return ret;
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258 }
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259
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260 /* Start the server & client threads */
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261 int fd_core_start(void)
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262 {
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263 /* Start server threads */
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264 CHECK_FCT( fd_servers_start() );
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265
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266 /* Start the peer state machines */
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267 CHECK_FCT( fd_psm_start() );
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268
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269 /* Start the core runner thread that handles main events (until shutdown) */
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270 CHECK_POSIX( pthread_create(&core_runner, NULL, core_runner_thread, NULL) );
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271
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272 /* Unlock threads waiting into fd_core_waitstartcomplete */
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273 CHECK_FCT( signal_framework_ready() );
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274
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275 /* Ok, everything is running now... */
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276 return 0;
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277 }
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278
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279
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280 /* Initialize shutdown of the framework. This is not blocking. */
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281 int fd_core_shutdown(void)
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282 {
686
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283 if (core_runner != (pthread_t)NULL) {
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284 /* Signal the framework to terminate */
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285 CHECK_FCT( fd_event_send(fd_g_config->cnf_main_ev, FDEV_TERMINATE, 0, NULL) );
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286 } else {
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287 /* The framework was maybe not fully initialized (ex: tests) */
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288 enum core_mode arg = CORE_MODE_IMMEDIATE;
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289 (void) core_runner_thread(&arg);
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290 }
658
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291
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292 return 0;
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293 }
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294
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295
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296 /* Wait for the shutdown to be complete -- this must always be called after fd_core_shutdown to relaim some resources. */
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297 int fd_core_wait_shutdown_complete(void)
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298 {
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299 int ret;
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300 void * th_ret = NULL;
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301
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302 if (core_runner != (pthread_t)NULL) {
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303 /* Just wait for core_runner_thread to complete and return gracefully */
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304 ret = pthread_join(core_runner, &th_ret);
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305 if (ret != 0) {
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306 fprintf(stderr, "Unable to wait for main framework thread termination: %s\n", strerror(ret));
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307 return ret;
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308 }
658
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309 }
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310
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311 return 0;
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312 }
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313
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314
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315
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316
"Welcome to our mercurial repository"