Mercurial > hg > nginx-quic
view src/core/ngx_cycle.c @ 254:98c77ca0f354
nginx-0.0.2-2004-02-09-19:30:01 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Mon, 09 Feb 2004 16:30:01 +0000 |
parents | 2a0540287298 |
children | e6938ca7331a |
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#include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> /* STUB */ #include <nginx.h> static void ngx_clean_old_cycles(ngx_event_t *ev); volatile ngx_cycle_t *ngx_cycle; ngx_array_t ngx_old_cycles; static ngx_pool_t *ngx_temp_pool; static ngx_event_t ngx_cleaner_event; /* STUB NAME */ static ngx_connection_t dumb; /* STUB */ ngx_cycle_t *ngx_init_cycle(ngx_cycle_t *old_cycle) { ngx_int_t i, n, failed; ngx_str_t conf_file; ngx_log_t *log; ngx_conf_t conf; ngx_pool_t *pool; ngx_cycle_t *cycle, **old; ngx_socket_t fd; ngx_open_file_t *file; ngx_listening_t *ls, *nls; log = old_cycle->log; if (!(pool = ngx_create_pool(16 * 1024, log))) { return NULL; } if (!(cycle = ngx_pcalloc(pool, sizeof(ngx_cycle_t)))) { ngx_destroy_pool(pool); return NULL; } cycle->pool = pool; cycle->old_cycle = old_cycle; n = old_cycle->pathes.nelts ? old_cycle->pathes.nelts : 10; if (!(cycle->pathes.elts = ngx_pcalloc(pool, n * sizeof(ngx_path_t *)))) { ngx_destroy_pool(pool); return NULL; } cycle->pathes.nelts = 0; cycle->pathes.size = sizeof(ngx_path_t *); cycle->pathes.nalloc = n; cycle->pathes.pool = pool; n = old_cycle->open_files.nelts ? old_cycle->open_files.nelts : 20; cycle->open_files.elts = ngx_pcalloc(pool, n * sizeof(ngx_open_file_t)); if (cycle->open_files.elts == NULL) { ngx_destroy_pool(pool); return NULL; } cycle->open_files.nelts = 0; cycle->open_files.size = sizeof(ngx_open_file_t); cycle->open_files.nalloc = n; cycle->open_files.pool = pool; if (!(cycle->log = ngx_log_create_errlog(cycle, NULL))) { ngx_destroy_pool(pool); return NULL; } n = old_cycle->listening.nelts ? old_cycle->listening.nelts : 10; cycle->listening.elts = ngx_pcalloc(pool, n * sizeof(ngx_listening_t)); if (cycle->listening.elts == NULL) { ngx_destroy_pool(pool); return NULL; } cycle->listening.nelts = 0; cycle->listening.size = sizeof(ngx_listening_t); cycle->listening.nalloc = n; cycle->listening.pool = pool; cycle->conf_ctx = ngx_pcalloc(pool, ngx_max_module * sizeof(void *)); if (cycle->conf_ctx == NULL) { ngx_destroy_pool(pool); return NULL; } if (ngx_core_module.init_module(cycle) == NGX_ERROR) { ngx_destroy_pool(pool); return NULL; } ngx_memzero(&conf, sizeof(ngx_conf_t)); /* STUB: init array ? */ conf.args = ngx_create_array(pool, 10, sizeof(ngx_str_t)); if (conf.args == NULL) { ngx_destroy_pool(pool); return NULL; } conf.ctx = cycle->conf_ctx; conf.cycle = cycle; /* STUB */ conf.pool = cycle->pool; conf.log = log; conf.module_type = NGX_CORE_MODULE; conf.cmd_type = NGX_MAIN_CONF; conf_file.len = sizeof(NGINX_CONF) - 1; conf_file.data = NGINX_CONF; if (ngx_conf_parse(&conf, &conf_file) != NGX_CONF_OK) { ngx_destroy_pool(pool); return NULL; } failed = 0; file = cycle->open_files.elts; for (i = 0; i < cycle->open_files.nelts; i++) { if (file[i].name.data == NULL) { continue; } file[i].fd = ngx_open_file(file[i].name.data, NGX_FILE_RDWR, NGX_FILE_CREATE_OR_OPEN|NGX_FILE_APPEND); if (file[i].fd == NGX_INVALID_FILE) { ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, ngx_open_file_n " \"%s\" failed", file[i].name.data); failed = 1; break; } #if (WIN32) if (ngx_file_append_mode(file[i].fd) == NGX_ERROR) { ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, ngx_file_append_mode_n " \"%s\" failed", file[i].name.data); failed = 1; break; } #else if (fcntl(file[i].fd, F_SETFD, FD_CLOEXEC) == -1) { ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "fcntl(FD_CLOEXEC) \"%s\" failed", file[i].name.data); failed = 1; break; } #endif } if (!failed) { if (old_cycle->listening.nelts) { ls = old_cycle->listening.elts; for (i = 0; i < old_cycle->listening.nelts; i++) { ls[i].remain = 0; } nls = cycle->listening.elts; for (n = 0; n < cycle->listening.nelts; n++) { for (i = 0; i < old_cycle->listening.nelts; i++) { if (ls[i].ignore) { continue; } if (ngx_memcmp(nls[n].sockaddr, ls[i].sockaddr, ls[i].socklen) == 0) { fd = ls[i].fd; #if (WIN32) /* * Winsock assignes a socket number divisible by 4 so * to find a connection we divide a socket number by 4. */ fd /= 4; #endif if (fd >= (ngx_socket_t) cycle->connection_n) { ngx_log_error(NGX_LOG_EMERG, log, 0, "%d connections is not enough to hold " "an open listening socket on %s, " "required at least %d connections", cycle->connection_n, ls[i].addr_text.data, fd); failed = 1; break; } nls[n].fd = ls[i].fd; nls[i].remain = 1; ls[i].remain = 1; break; } } if (nls[n].fd == -1) { nls[n].new = 1; } } } else { ls = cycle->listening.elts; for (i = 0; i < cycle->listening.nelts; i++) { ls[i].new = 1; } } if (!failed) { if (ngx_open_listening_sockets(cycle) == NGX_ERROR) { failed = 1; } } } /* TODO: Win32 DuplicateHandle ? */ if (dup2(cycle->log->file->fd, STDERR_FILENO) == -1) { ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "dup2(STDERR) failed"); failed = 1; } if (failed) { /* rollback the new cycle configuration */ file = cycle->open_files.elts; for (i = 0; i < cycle->open_files.nelts; i++) { if (file[i].fd == NGX_INVALID_FILE) { continue; } if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, ngx_close_file_n " \"%s\" failed", file[i].name.data); } } ls = cycle->listening.elts; for (i = 0; i < cycle->listening.nelts; i++) { if (ls[i].new && ls[i].fd == -1) { continue; } if (ngx_close_socket(ls[i].fd) == -1) { ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno, ngx_close_socket_n " %s failed", ls[i].addr_text.data); } } ngx_destroy_pool(pool); return NULL; } /* commit the new cycle configuration */ pool->log = cycle->log; for (i = 0; ngx_modules[i]; i++) { if (ngx_modules[i]->init_module) { if (ngx_modules[i]->init_module(cycle) == NGX_ERROR) { /* fatal */ exit(1); } } } /* close and delete stuff that lefts from an old cycle */ /* close the unneeded listening sockets */ ls = old_cycle->listening.elts; for (i = 0; i < old_cycle->listening.nelts; i++) { if (ls[i].remain) { continue; } if (ngx_close_socket(ls[i].fd) == -1) { ngx_log_error(NGX_LOG_EMERG, log, ngx_socket_errno, ngx_close_socket_n " %s failed", ls[i].addr_text.data); } } /* close the unneeded open files */ file = old_cycle->open_files.elts; for (i = 0; i < old_cycle->open_files.nelts; i++) { if (file[i].fd == NGX_INVALID_FILE) { continue; } if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, ngx_close_file_n " \"%s\" failed", file[i].name.data); } } if (old_cycle->connections == NULL) { /* an old cycle is an init cycle */ ngx_destroy_pool(old_cycle->pool); return cycle; } if (ngx_process == NGX_PROCESS_MASTER) { ngx_destroy_pool(old_cycle->pool); return cycle; } if (ngx_temp_pool == NULL) { ngx_temp_pool = ngx_create_pool(128, cycle->log); if (ngx_temp_pool == NULL) { ngx_log_error(NGX_LOG_EMERG, cycle->log, 0, "can not create ngx_temp_pool"); exit(1); } n = 10; ngx_old_cycles.elts = ngx_pcalloc(ngx_temp_pool, n * sizeof(ngx_cycle_t *)); if (ngx_old_cycles.elts == NULL) { exit(1); } ngx_old_cycles.nelts = 0; ngx_old_cycles.size = sizeof(ngx_cycle_t *); ngx_old_cycles.nalloc = n; ngx_old_cycles.pool = ngx_temp_pool; ngx_cleaner_event.event_handler = ngx_clean_old_cycles; ngx_cleaner_event.log = cycle->log; ngx_cleaner_event.data = &dumb; dumb.fd = (ngx_socket_t) -1; } ngx_temp_pool->log = cycle->log; old = ngx_push_array(&ngx_old_cycles); if (old == NULL) { exit(1); } *old = old_cycle; if (!ngx_cleaner_event.timer_set) { ngx_add_timer(&ngx_cleaner_event, 30000); ngx_cleaner_event.timer_set = 1; } return cycle; } void ngx_reopen_files(ngx_cycle_t *cycle, uid_t user) { ngx_fd_t fd; ngx_int_t i; ngx_open_file_t *file; file = cycle->open_files.elts; for (i = 0; i < cycle->open_files.nelts; i++) { if (file[i].name.data == NULL) { continue; } fd = ngx_open_file(file[i].name.data, NGX_FILE_RDWR, NGX_FILE_CREATE_OR_OPEN|NGX_FILE_APPEND); ngx_log_debug3(NGX_LOG_DEBUG_EVENT, cycle->log, 0, "reopen file \"%s\", old:%d new:%d", file[i].name.data, file[i].fd, fd); if (fd == NGX_INVALID_FILE) { ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, ngx_open_file_n " \"%s\" failed", file[i].name.data); continue; } if (user != (uid_t) -1) { if (chown(file[i].name.data, user, -1) == -1) { ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, "chown \"%s\" failed", file[i].name.data); if (ngx_close_file(fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, ngx_close_file_n " \"%s\" failed", file[i].name.data); } } } #if (WIN32) if (ngx_file_append_mode(fd) == NGX_ERROR) { ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, ngx_file_append_mode_n " \"%s\" failed", file[i].name.data); if (ngx_close_file(fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, ngx_close_file_n " \"%s\" failed", file[i].name.data); } continue; } #else if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) { ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, "fcntl(FD_CLOEXEC) \"%s\" failed", file[i].name.data); if (ngx_close_file(fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, ngx_close_file_n " \"%s\" failed", file[i].name.data); } continue; } #endif if (ngx_close_file(file[i].fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, ngx_close_file_n " \"%s\" failed", file[i].name.data); } file[i].fd = fd; } /* TODO: Win32 DuplicateHandle ? */ if (dup2(cycle->log->file->fd, STDERR_FILENO) == -1) { ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, "dup2(STDERR) failed"); } } static void ngx_clean_old_cycles(ngx_event_t *ev) { int i, n, found, live; ngx_log_t *log; ngx_cycle_t **cycle; log = ngx_cycle->log; ngx_temp_pool->log = log; ngx_log_debug(log, "clean old cycles"); live = 0; cycle = ngx_old_cycles.elts; for (i = 0; i < ngx_old_cycles.nelts; i++) { if (cycle[i] == NULL) { continue; } found = 0; for (n = 0; n < cycle[i]->connection_n; n++) { if (cycle[i]->connections[n].fd != -1) { found = 1; ngx_log_debug(log, "live fd: %d" _ n); break; } } if (found) { live = 1; continue; } ngx_log_debug(log, "clean old cycle: %d" _ i); ngx_destroy_pool(cycle[i]->pool); cycle[i] = NULL; } ngx_log_debug(log, "old cycles status: %d" _ live); if (live) { ngx_log_debug(log, "TIMER"); ngx_add_timer(ev, 30000); } else { ngx_destroy_pool(ngx_temp_pool); ngx_temp_pool = NULL; ngx_old_cycles.nelts = 0; } }