Mercurial > hg > nginx
view src/os/unix/ngx_posix_cycle.c @ 248:e885208c518b
nginx-0.0.2-2004-02-03-00:19:52 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Mon, 02 Feb 2004 21:19:52 +0000 |
parents | 8aa1bc7d06ba |
children |
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void ngx_posix_master_cycle(ngx_cycle_t *cycle) { static ngx_int_t sent; static ngx_msec_t delay = 125; if (ngx_process == NGX_PROCESS_MASTER) { if (sent) { ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "sent signal cycle"); if (sigprocmask(SIG_UNBLOCK, &set, NULL) == -1) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, "sigprocmask() failed"); continue; } /* * there is very big chance that the pending signals * would be delivered right on the sigprocmask() return */ if (!ngx_signal) { if (delay < 15000) { delay *= 2; } ngx_log_debug1(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "msleep %d", delay); ngx_msleep(delay); ngx_gettimeofday(&tv); ngx_time_update(tv.tv_sec); ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "wake up"); } if (sigprocmask(SIG_BLOCK, &set, NULL) == -1) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, "sigprocmask() failed"); } ngx_signal = 0; } else { ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "sigsuspend"); sigsuspend(&wset); ngx_gettimeofday(&tv); ngx_time_update(tv.tv_sec); ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "wake up"); } } else { /* NGX_PROCESS_SINGLE */ ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "worker cycle"); ngx_process_events(cycle->log); } if (ngx_reap) { ngx_log_debug0(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "reap childs"); live = 0; for (i = 0; i < ngx_last_process; i++) { ngx_log_debug6(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "child: " PID_T_FMT " s:%d e:%d t:%d d:%d r:%d", ngx_processes[i].pid, ngx_processes[i].signal, ngx_processes[i].exiting, ngx_processes[i].exited, ngx_processes[i].detached, ngx_processes[i].respawn); if (ngx_processes[i].exited) { if (ngx_processes[i].respawn && !ngx_processes[i].exiting && !ngx_terminate && !ngx_quit) { if (ngx_spawn_process(cycle, ngx_processes[i].proc, ngx_processes[i].data, ngx_processes[i].name, i) == NGX_ERROR) { ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, "can not respawn %s", ngx_processes[i].name); } continue; } if (ngx_processes[i].pid == ngx_new_binary) { ngx_new_binary = 0; } if (i != --ngx_last_process) { ngx_processes[i--] = ngx_processes[ngx_last_process]; } } else if (!ngx_processes[i].detached && (ngx_terminate || ngx_quit)) { live = 1; } else if (ngx_processes[i].exiting) { live = 1; } } if (!live) { if (ngx_terminate || ngx_quit) { if (ngx_inherited && getppid() > 1) { name = ctx->pid.name.data; } else { name = ctx->name; } if (ngx_delete_file(name) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, ngx_delete_file_n " \"%s\" failed", name); } ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "exit"); exit(0); } else { sent = 0; } } } if (ngx_terminate) { if (delay > 10000) { signo = SIGKILL; } else { signo = ngx_signal_value(NGX_TERMINATE_SIGNAL); } } else if (ngx_quit) { signo = ngx_signal_value(NGX_SHUTDOWN_SIGNAL); } else { if (ngx_noaccept) { signo = ngx_signal_value(NGX_SHUTDOWN_SIGNAL); } if (ngx_change_binary) { ngx_change_binary = 0; ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "changing binary"); ngx_new_binary = ngx_exec_new_binary(cycle, ctx->argv); } if (ngx_reconfigure) { signo = ngx_signal_value(NGX_SHUTDOWN_SIGNAL); ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "reconfiguring"); } if (ngx_reopen) { /* STUB */ signo = ngx_signal_value(NGX_SHUTDOWN_SIGNAL); ngx_log_error(NGX_LOG_INFO, cycle->log, 0, "reopening logs"); ngx_reopen_files(cycle); } } if (signo) { for (i = 0; i < ngx_last_process; i++) { if (!ngx_processes[i].detached) { ngx_processes[i].signal = signo; ngx_log_debug2(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "signal " PID_T_FMT " %d", ngx_processes[i].pid, signo); } } delay = 125; signo = 0; } for (i = 0; i < ngx_last_process; i++) { if (ngx_processes[i].signal == 0) { continue; } if (ccf->kqueue_signal != 1) { sent = 1; } ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0, "kill (" PID_T_FMT ", %d)" , ngx_processes[i].pid, ngx_processes[i].signal); if (kill(ngx_processes[i].pid, ngx_processes[i].signal) == -1) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, "kill(%d, %d) failed", ngx_processes[i].pid, ngx_processes[i].signal); continue; } if (ngx_processes[i].signal != ngx_signal_value(NGX_REOPEN_SIGNAL)) { ngx_processes[i].exiting = 1; } } }