1 | #define _GNU_SOURCE |
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2 | |
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3 | #include <errno.h> |
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4 | #include <signal.h> |
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5 | #include <stdio.h> |
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6 | #include <string.h> |
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7 | #include <unistd.h> |
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8 | extern "C" { |
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9 | #include <sched.h> |
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10 | #include <signal.h> |
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11 | #include <sys/eventfd.h> |
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12 | #include <sys/socket.h> |
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13 | #include <netinet/in.h> |
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14 | } |
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15 | |
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16 | #include <fstream.hfa> |
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17 | #include <kernel.hfa> |
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18 | #include <locks.hfa> |
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19 | #include <iofwd.hfa> |
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20 | #include <stats.hfa> |
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21 | #include <time.hfa> |
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22 | #include <thread.hfa> |
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23 | |
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24 | #include "filecache.hfa" |
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25 | #include "options.hfa" |
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26 | #include "socket.hfa" |
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27 | #include "printer.hfa" |
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28 | #include "worker.hfa" |
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29 | |
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30 | extern void register_fixed_files( cluster &, int *, unsigned count ); |
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31 | |
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32 | Duration default_preemption() { |
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33 | return 0; |
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34 | } |
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35 | |
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36 | //============================================================================================= |
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37 | // Globals |
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38 | //============================================================================================= |
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39 | struct ServerCluster { |
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40 | cluster self; |
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41 | processor * procs; |
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42 | |
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43 | }; |
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44 | |
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45 | void ?{}( ServerCluster & this ) { |
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46 | (this.self){ "Server Cluster", options.clopts.params }; |
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47 | |
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48 | cpu_set_t fullset; |
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49 | CPU_ZERO(&fullset); |
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50 | int ret = sched_getaffinity(getpid(), sizeof(fullset), &fullset); |
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51 | if( ret != 0 ) abort | "sched_getaffinity failed with" | errno | strerror( errno ); |
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52 | int cnt = CPU_COUNT(&fullset); |
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53 | |
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54 | this.procs = alloc(options.clopts.nprocs); |
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55 | for(i; options.clopts.nprocs) { |
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56 | (this.procs[i]){ "Benchmark Processor", this.self }; |
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57 | |
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58 | int c = 0; |
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59 | int n = 1 + (i % cnt); |
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60 | for(int j = 0; j < CPU_SETSIZE; j++) { |
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61 | if(CPU_ISSET(j, &fullset)) n--; |
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62 | if(n == 0) { |
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63 | c = j; |
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64 | break; |
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65 | } |
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66 | } |
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67 | cpu_set_t localset; |
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68 | CPU_ZERO(&localset); |
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69 | CPU_SET(c, &localset); |
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70 | ret = pthread_setaffinity_np(this.procs[i].kernel_thread, sizeof(localset), &localset); |
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71 | if( ret != 0 ) abort | "sched_getaffinity failed with" | ret | strerror( ret ); |
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72 | |
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73 | #if !defined(__CFA_NO_STATISTICS__) |
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74 | if( options.clopts.procstats ) { |
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75 | print_stats_at_exit( *this.procs, this.self.print_stats ); |
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76 | } |
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77 | if( options.clopts.viewhalts ) { |
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78 | print_halts( *this.procs ); |
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79 | } |
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80 | #endif |
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81 | } |
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82 | |
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83 | #if !defined(__CFA_NO_STATISTICS__) |
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84 | print_stats_at_exit( this.self, CFA_STATS_READY_Q | CFA_STATS_IO ); |
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85 | #endif |
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86 | |
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87 | options.clopts.instance = &this.self; |
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88 | } |
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89 | |
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90 | void ^?{}( ServerCluster & this ) { |
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91 | for(i; options.clopts.nprocs) { |
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92 | ^(this.procs[i]){}; |
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93 | } |
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94 | free(this.procs); |
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95 | |
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96 | ^(this.self){}; |
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97 | } |
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98 | |
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99 | extern void init_protocol(void); |
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100 | extern void deinit_protocol(void); |
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101 | |
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102 | //============================================================================================= |
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103 | // REUSEPORT |
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104 | //============================================================================================= |
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105 | |
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106 | size_t sockarr_size; |
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107 | struct __attribute__((aligned(128))) Q { |
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108 | mpsc_queue(PendingRead) q; |
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109 | }; |
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110 | |
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111 | //============================================================================================= |
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112 | // Termination |
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113 | //============================================================================================= |
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114 | |
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115 | int closefd; |
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116 | void cleanstop(int) { |
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117 | eventfd_t buffer = 1; |
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118 | char * buffer_s = (char*)&buffer; |
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119 | int ret = write(closefd, buffer_s, sizeof(buffer)); |
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120 | if(ret < 0) abort( "eventfd write error: (%d) %s\n", (int)errno, strerror(errno) ); |
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121 | return; |
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122 | } |
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123 | |
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124 | //============================================================================================= |
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125 | // Main |
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126 | //=============================================================================================' |
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127 | int main( int argc, char * argv[] ) { |
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128 | int ret; |
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129 | __sighandler_t s = 1p; |
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130 | signal(SIGPIPE, s); |
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131 | |
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132 | //=================== |
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133 | // Parse args |
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134 | parse_options(argc, argv); |
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135 | |
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136 | //=================== |
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137 | // Setup non-interactive termination |
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138 | if(!options.interactive) { |
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139 | closefd = eventfd(0, 0); |
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140 | if(closefd < 0) abort( "eventfd error: (%d) %s\n", (int)errno, strerror(errno) ); |
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141 | |
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142 | sighandler_t prev = signal(SIGTERM, cleanstop); |
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143 | intptr_t prev_workaround = (intptr_t) prev; |
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144 | // can't use SIG_ERR it crashes the compiler |
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145 | if(prev_workaround == -1) abort( "signal setup error: (%d) %s\n", (int)errno, strerror(errno) ); |
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146 | |
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147 | sout | "Signal termination ready"; |
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148 | } |
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149 | |
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150 | //=================== |
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151 | // Open Files |
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152 | if( options.file_cache.path ) { |
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153 | sout | "Filling cache from" | options.file_cache.path; |
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154 | fill_cache( options.file_cache.path ); |
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155 | } |
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156 | |
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157 | //=================== |
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158 | // Open Socket |
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159 | sout | getpid() | ": Listening on port" | options.socket.port; |
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160 | |
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161 | struct sockaddr_in address; |
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162 | int addrlen = prepaddr(address); |
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163 | |
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164 | int server_fd; |
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165 | |
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166 | //=================== |
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167 | // Run Server Cluster |
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168 | { |
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169 | int pipe_cnt = options.clopts.nworkers * 2; |
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170 | int pipe_off; |
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171 | int * fds; |
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172 | [fds, pipe_off] = filefds( pipe_cnt ); |
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173 | for(i; 0 ~ pipe_cnt ~ 2) { |
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174 | int ret = pipe(&fds[pipe_off + i]); |
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175 | if( ret < 0 ) { abort( "pipe error: (%d) %s\n", (int)errno, strerror(errno) ); } |
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176 | } |
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177 | |
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178 | // if(options.file_cache.path && options.file_cache.fixed_fds) { |
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179 | // register_fixed_files(cl, fds, pipe_off); |
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180 | // } |
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181 | |
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182 | { |
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183 | // Stats printer makes a copy so this needs to persist longer than normal |
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184 | connection ** conns; |
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185 | AcceptWorker * aworkers = 0p; |
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186 | ChannelWorker * cworkers = 0p; |
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187 | Acceptor * acceptors = 0p; |
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188 | Q * queues = 0p; |
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189 | ServerCluster cl; |
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190 | |
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191 | if(options.stats) { |
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192 | stats_thrd = alloc(); |
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193 | (*stats_thrd){ cl.self }; |
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194 | } else { |
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195 | stats_thrd = 0p; |
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196 | } |
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197 | |
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198 | init_protocol(); |
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199 | { |
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200 | conns = alloc(options.clopts.nworkers); |
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201 | if(options.socket.reuseport) { |
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202 | queues = alloc(options.clopts.nprocs); |
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203 | acceptors = anew(options.clopts.nprocs); |
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204 | for(i; options.clopts.nprocs) { |
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205 | (queues[i]){}; |
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206 | { |
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207 | acceptors[i].sockfd = listener(address, addrlen); |
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208 | acceptors[i].addr = (struct sockaddr *)&address; |
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209 | acceptors[i].addrlen = (socklen_t*)&addrlen; |
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210 | acceptors[i].flags = 0; |
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211 | acceptors[i].queue = &queues[i].q; |
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212 | } |
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213 | unpark( acceptors[i] ); |
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214 | } |
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215 | |
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216 | cworkers = anew(options.clopts.nworkers); |
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217 | for(i; options.clopts.nworkers) { |
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218 | { |
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219 | cworkers[i].conn.pipe[0] = fds[pipe_off + (i * 2) + 0]; |
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220 | cworkers[i].conn.pipe[1] = fds[pipe_off + (i * 2) + 1]; |
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221 | cworkers[i].queue = &queues[i % options.clopts.nprocs].q; |
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222 | conns[i] = &cworkers[i].conn; |
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223 | } |
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224 | unpark( cworkers[i] ); |
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225 | } |
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226 | } |
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227 | else { |
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228 | server_fd = listener(address, addrlen); |
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229 | aworkers = anew(options.clopts.nworkers); |
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230 | for(i; options.clopts.nworkers) { |
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231 | // if( options.file_cache.fixed_fds ) { |
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232 | // workers[i].pipe[0] = pipe_off + (i * 2) + 0; |
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233 | // workers[i].pipe[1] = pipe_off + (i * 2) + 1; |
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234 | // } |
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235 | // else |
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236 | { |
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237 | aworkers[i].conn.pipe[0] = fds[pipe_off + (i * 2) + 0]; |
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238 | aworkers[i].conn.pipe[1] = fds[pipe_off + (i * 2) + 1]; |
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239 | aworkers[i].sockfd = server_fd; |
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240 | aworkers[i].addr = (struct sockaddr *)&address; |
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241 | aworkers[i].addrlen = (socklen_t*)&addrlen; |
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242 | aworkers[i].flags = 0; |
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243 | conns[i] = &aworkers[i].conn; |
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244 | } |
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245 | unpark( aworkers[i] ); |
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246 | } |
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247 | } |
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248 | |
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249 | sout | options.clopts.nworkers | "workers started on" | options.clopts.nprocs | "processors"; |
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250 | sout | nl; |
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251 | { |
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252 | if(options.interactive) { |
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253 | char buffer[128]; |
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254 | for() { |
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255 | int ret = cfa_read(0, buffer, 128, 0); |
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256 | if(ret == 0) break; |
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257 | if(ret < 0) abort( "main read error: (%d) %s\n", (int)errno, strerror(errno) ); |
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258 | sout | "User wrote '" | "" | nonl; |
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259 | write(sout, buffer, ret - 1); |
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260 | sout | "'"; |
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261 | } |
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262 | } |
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263 | else { |
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264 | char buffer[sizeof(eventfd_t)]; |
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265 | int ret = cfa_read(closefd, buffer, sizeof(eventfd_t), 0); |
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266 | if(ret < 0) abort( "main read error: (%d) %s\n", (int)errno, strerror(errno) ); |
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267 | } |
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268 | |
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269 | sout | "Shutdown received"; |
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270 | } |
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271 | |
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272 | //=================== |
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273 | // Close Socket and join |
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274 | if(options.socket.reuseport) { |
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275 | sout | "Notifying connections..." | nonl; flush( sout ); |
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276 | for(i; options.clopts.nprocs) { |
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277 | acceptors[i].done = true; |
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278 | } |
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279 | for(i; options.clopts.nworkers) { |
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280 | cworkers[i].done = true; |
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281 | } |
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282 | sout | "done"; |
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283 | |
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284 | sout | "Shutting down Socket..." | nonl; flush( sout ); |
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285 | for(i; options.clopts.nprocs) { |
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286 | ret = shutdown( acceptors[i].sockfd, SHUT_RD ); |
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287 | if( ret < 0 ) { |
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288 | abort( "shutdown1 error: (%d) %s\n", (int)errno, strerror(errno) ); |
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289 | } |
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290 | } |
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291 | sout | "done"; |
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292 | |
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293 | sout | "Closing Socket..." | nonl; flush( sout ); |
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294 | for(i; options.clopts.nprocs) { |
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295 | ret = close( acceptors[i].sockfd ); |
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296 | if( ret < 0) { |
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297 | abort( "close socket error: (%d) %s\n", (int)errno, strerror(errno) ); |
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298 | } |
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299 | } |
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300 | sout | "done"; |
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301 | |
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302 | sout | "Stopping accept threads..." | nonl; flush( sout ); |
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303 | for(i; options.clopts.nprocs) { |
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304 | join(acceptors[i]); |
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305 | } |
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306 | sout | "done"; |
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307 | |
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308 | sout | "Draining worker queues..." | nonl; flush( sout ); |
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309 | for(i; options.clopts.nprocs) { |
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310 | PendingRead * p = 0p; |
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311 | while(p = pop(queues[i].q)) { |
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312 | fulfil(p->f, -ECONNRESET); |
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313 | } |
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314 | } |
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315 | sout | "done"; |
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316 | |
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317 | sout | "Stopping worker threads..." | nonl; flush( sout ); |
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318 | for(i; options.clopts.nworkers) { |
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319 | for(j; 2) { |
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320 | ret = close(cworkers[i].conn.pipe[j]); |
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321 | if(ret < 0) abort( "close pipe %d error: (%d) %s\n", j, (int)errno, strerror(errno) ); |
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322 | } |
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323 | join(cworkers[i]); |
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324 | } |
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325 | } |
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326 | else { |
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327 | sout | "Notifying connections..." | nonl; flush( sout ); |
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328 | for(i; options.clopts.nworkers) { |
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329 | aworkers[i].done = true; |
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330 | } |
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331 | sout | "done"; |
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332 | |
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333 | sout | "Shutting down Socket..." | nonl; flush( sout ); |
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334 | ret = shutdown( server_fd, SHUT_RD ); |
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335 | if( ret < 0 ) { |
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336 | abort( "shutdown2 error: (%d) %s\n", (int)errno, strerror(errno) ); |
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337 | } |
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338 | sout | "done"; |
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339 | |
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340 | sout | "Closing Socket..." | nonl; flush( sout ); |
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341 | ret = close( server_fd ); |
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342 | if(ret < 0) { |
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343 | abort( "close socket error: (%d) %s\n", (int)errno, strerror(errno) ); |
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344 | } |
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345 | sout | "done"; |
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346 | |
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347 | sout | "Stopping connection threads..." | nonl; flush( sout ); |
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348 | for(i; options.clopts.nworkers) { |
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349 | for(j; 2) { |
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350 | ret = close(aworkers[i].conn.pipe[j]); |
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351 | if(ret < 0) abort( "close pipe %d error: (%d) %s\n", j, (int)errno, strerror(errno) ); |
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352 | } |
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353 | join(aworkers[i]); |
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354 | } |
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355 | } |
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356 | } |
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357 | sout | "done"; |
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358 | |
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359 | sout | "Stopping protocol threads..." | nonl; flush( sout ); |
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360 | deinit_protocol(); |
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361 | sout | "done"; |
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362 | |
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363 | sout | "Stopping printer threads..." | nonl; flush( sout ); |
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364 | if(stats_thrd) { |
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365 | notify_one(stats_thrd->var); |
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366 | } |
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367 | delete(stats_thrd); |
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368 | sout | "done"; |
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369 | |
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370 | // Now that the stats printer is stopped, we can reclaim this |
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371 | adelete(aworkers); |
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372 | adelete(cworkers); |
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373 | adelete(acceptors); |
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374 | adelete(queues); |
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375 | free(conns); |
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376 | |
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377 | sout | "Stopping processors/clusters..." | nonl; flush( sout ); |
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378 | } |
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379 | sout | "done"; |
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380 | |
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381 | free(fds); |
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382 | |
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383 | sout | "Stopping processors..." | nonl; flush( sout ); |
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384 | } |
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385 | sout | "done"; |
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386 | |
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387 | //=================== |
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388 | // Close Files |
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389 | if( options.file_cache.path ) { |
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390 | sout | "Closing open files..." | nonl; flush( sout ); |
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391 | close_cache(); |
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392 | sout | "done"; |
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393 | } |
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394 | } |
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395 | |
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396 | const size_t zipf_sizes[] = { 102, 204, 307, 409, 512, 614, 716, 819, 921, 1024, 2048, 3072, 4096, 5120, 6144, 7168, 8192, 9216, 10240, 20480, 30720, 40960, 51200, 61440, 71680, 81920, 92160, 102400, 204800, 307200, 409600, 512000, 614400, 716800, 819200, 921600 }; |
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397 | static_assert(zipf_cnts == sizeof(zipf_sizes) / sizeof(zipf_sizes[0])); |
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