Mercurial > hg > nginx-quic
view src/os/win32/ngx_process.c @ 5115:a29c574d61fa
Status: introduced the "ngx_stat_waiting" counter.
And corresponding variable $connections_waiting was added.
Previously, waiting connections were counted as the difference between
active connections and the sum of reading and writing connections.
That made it impossible to count more than one request in one connection
as reading or writing (as is the case for SPDY).
Also, we no longer count connections in handshake state as waiting.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Fri, 15 Mar 2013 20:00:49 +0000 |
parents | e00b71ece8b3 |
children | 2b7dacb381ed |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> int ngx_argc; char **ngx_argv; char **ngx_os_argv; ngx_int_t ngx_last_process; ngx_process_t ngx_processes[NGX_MAX_PROCESSES]; ngx_pid_t ngx_spawn_process(ngx_cycle_t *cycle, char *name, ngx_int_t respawn) { u_long rc, n, code; ngx_int_t s; ngx_pid_t pid; ngx_exec_ctx_t ctx; HANDLE events[2]; char file[MAX_PATH + 1]; if (respawn >= 0) { s = respawn; } else { for (s = 0; s < ngx_last_process; s++) { if (ngx_processes[s].handle == NULL) { break; } } if (s == NGX_MAX_PROCESSES) { ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, "no more than %d processes can be spawned", NGX_MAX_PROCESSES); return NGX_INVALID_PID; } } n = GetModuleFileName(NULL, file, MAX_PATH); if (n == 0) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, "GetModuleFileName() failed"); return NGX_INVALID_PID; } file[n] = '\0'; ngx_log_debug1(NGX_LOG_DEBUG_CORE, cycle->log, 0, "GetModuleFileName: \"%s\"", file); ctx.path = file; ctx.name = name; ctx.args = GetCommandLine(); ctx.argv = NULL; ctx.envp = NULL; pid = ngx_execute(cycle, &ctx); if (pid == NGX_INVALID_PID) { return pid; } ngx_memzero(&ngx_processes[s], sizeof(ngx_process_t)); ngx_processes[s].handle = ctx.child; ngx_processes[s].pid = pid; ngx_processes[s].name = name; ngx_sprintf(ngx_processes[s].term_event, "ngx_%s_term_%ul%Z", name, pid); ngx_sprintf(ngx_processes[s].quit_event, "ngx_%s_quit_%ul%Z", name, pid); ngx_sprintf(ngx_processes[s].reopen_event, "ngx_%s_reopen_%ul%Z", name, pid); events[0] = ngx_master_process_event; events[1] = ctx.child; rc = WaitForMultipleObjects(2, events, 0, 5000); ngx_time_update(); ngx_log_debug1(NGX_LOG_DEBUG_CORE, cycle->log, 0, "WaitForMultipleObjects: %ul", rc); switch (rc) { case WAIT_OBJECT_0: ngx_processes[s].term = OpenEvent(EVENT_MODIFY_STATE, 0, (char *) ngx_processes[s].term_event); if (ngx_processes[s].term == NULL) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, "OpenEvent(\"%s\") failed", ngx_processes[s].term_event); goto failed; } ngx_processes[s].quit = OpenEvent(EVENT_MODIFY_STATE, 0, (char *) ngx_processes[s].quit_event); if (ngx_processes[s].quit == NULL) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, "OpenEvent(\"%s\") failed", ngx_processes[s].quit_event); goto failed; } ngx_processes[s].reopen = OpenEvent(EVENT_MODIFY_STATE, 0, (char *) ngx_processes[s].reopen_event); if (ngx_processes[s].reopen == NULL) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, "OpenEvent(\"%s\") failed", ngx_processes[s].reopen_event); goto failed; } if (ResetEvent(ngx_master_process_event) == 0) { ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, "ResetEvent(\"%s\") failed", ngx_master_process_event_name); goto failed; } break; case WAIT_OBJECT_0 + 1: if (GetExitCodeProcess(ctx.child, &code) == 0) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, "GetExitCodeProcess(%P) failed", pid); } ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, "%s process %P exited with code %Xul", name, pid, code); goto failed; case WAIT_TIMEOUT: ngx_log_error(NGX_LOG_ALERT, cycle->log, 0, "the event \"%s\" was not signaled for 5s", ngx_master_process_event_name); goto failed; case WAIT_FAILED: ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, "WaitForSingleObject(\"%s\") failed", ngx_master_process_event_name); goto failed; } if (respawn >= 0) { return pid; } switch (respawn) { case NGX_PROCESS_RESPAWN: ngx_processes[s].just_spawn = 0; break; case NGX_PROCESS_JUST_RESPAWN: ngx_processes[s].just_spawn = 1; break; } if (s == ngx_last_process) { ngx_last_process++; } return pid; failed: if (ngx_processes[s].reopen) { ngx_close_handle(ngx_processes[s].reopen); } if (ngx_processes[s].quit) { ngx_close_handle(ngx_processes[s].quit); } if (ngx_processes[s].term) { ngx_close_handle(ngx_processes[s].term); } TerminateProcess(ngx_processes[s].handle, 2); if (ngx_processes[s].handle) { ngx_close_handle(ngx_processes[s].handle); ngx_processes[s].handle = NULL; } return NGX_INVALID_PID; } ngx_pid_t ngx_execute(ngx_cycle_t *cycle, ngx_exec_ctx_t *ctx) { STARTUPINFO si; PROCESS_INFORMATION pi; ngx_memzero(&si, sizeof(STARTUPINFO)); si.cb = sizeof(STARTUPINFO); ngx_memzero(&pi, sizeof(PROCESS_INFORMATION)); if (CreateProcess(ctx->path, ctx->args, NULL, NULL, 0, CREATE_NO_WINDOW, NULL, NULL, &si, &pi) == 0) { ngx_log_error(NGX_LOG_CRIT, cycle->log, ngx_errno, "CreateProcess(\"%s\") failed", ngx_argv[0]); return 0; } ctx->child = pi.hProcess; if (CloseHandle(pi.hThread) == 0) { ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_errno, "CloseHandle(pi.hThread) failed"); } ngx_log_error(NGX_LOG_NOTICE, cycle->log, 0, "start %s process %P", ctx->name, pi.dwProcessId); return pi.dwProcessId; }