/* Copyright Joyent, Inc. and other Node contributors. All rights reserved. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #include "uv.h" #include "uv/tree.h" #include "internal.h" #include "heap-inl.h" #include <stdlib.h> #include <string.h> #include <unistd.h> int uv_loop_init(uv_loop_t* loop) { void* saved_data; int err; saved_data = loop->data; memset(loop, 0, sizeof(*loop)); loop->data = saved_data; heap_init((struct heap*) &loop->timer_heap); QUEUE_INIT(&loop->wq); QUEUE_INIT(&loop->idle_handles); QUEUE_INIT(&loop->async_handles); QUEUE_INIT(&loop->check_handles); QUEUE_INIT(&loop->prepare_handles); QUEUE_INIT(&loop->handle_queue); loop->active_handles = 0; loop->active_reqs.count = 0; loop->nfds = 0; loop->watchers = NULL; loop->nwatchers = 0; QUEUE_INIT(&loop->pending_queue); QUEUE_INIT(&loop->watcher_queue); loop->closing_handles = NULL; uv__update_time(loop); loop->async_io_watcher.fd = -1; loop->async_wfd = -1; loop->signal_pipefd[0] = -1; loop->signal_pipefd[1] = -1; loop->backend_fd = -1; loop->emfile_fd = -1; loop->timer_counter = 0; loop->stop_flag = 0; err = uv__platform_loop_init(loop); if (err) return err; uv__signal_global_once_init(); err = uv_signal_init(loop, &loop->child_watcher); if (err) goto fail_signal_init; uv__handle_unref(&loop->child_watcher); loop->child_watcher.flags |= UV_HANDLE_INTERNAL; QUEUE_INIT(&loop->process_handles); err = uv_rwlock_init(&loop->cloexec_lock); if (err) goto fail_rwlock_init; err = uv_mutex_init(&loop->wq_mutex); if (err) goto fail_mutex_init; err = uv_async_init(loop, &loop->wq_async, uv__work_done); if (err) goto fail_async_init; uv__handle_unref(&loop->wq_async); loop->wq_async.flags |= UV_HANDLE_INTERNAL; return 0; fail_async_init: uv_mutex_destroy(&loop->wq_mutex); fail_mutex_init: uv_rwlock_destroy(&loop->cloexec_lock); fail_rwlock_init: uv__signal_loop_cleanup(loop); fail_signal_init: uv__platform_loop_delete(loop); return err; } int uv_loop_fork(uv_loop_t* loop) { int err; unsigned int i; uv__io_t* w; err = uv__io_fork(loop); if (err) return err; err = uv__async_fork(loop); if (err) return err; err = uv__signal_loop_fork(loop); if (err) return err; /* Rearm all the watchers that aren't re-queued by the above. */ for (i = 0; i < loop->nwatchers; i++) { w = loop->watchers[i]; if (w == NULL) continue; if (w->pevents != 0 && QUEUE_EMPTY(&w->watcher_queue)) { w->events = 0; /* Force re-registration in uv__io_poll. */ QUEUE_INSERT_TAIL(&loop->watcher_queue, &w->watcher_queue); } } return 0; } void uv__loop_close(uv_loop_t* loop) { uv__signal_loop_cleanup(loop); uv__platform_loop_delete(loop); uv__async_stop(loop); if (loop->emfile_fd != -1) { uv__close(loop->emfile_fd); loop->emfile_fd = -1; } if (loop->backend_fd != -1) { uv__close(loop->backend_fd); loop->backend_fd = -1; } uv_mutex_lock(&loop->wq_mutex); assert(QUEUE_EMPTY(&loop->wq) && "thread pool work queue not empty!"); assert(!uv__has_active_reqs(loop)); uv_mutex_unlock(&loop->wq_mutex); uv_mutex_destroy(&loop->wq_mutex); /* * Note that all thread pool stuff is finished at this point and * it is safe to just destroy rw lock */ uv_rwlock_destroy(&loop->cloexec_lock); #if 0 assert(QUEUE_EMPTY(&loop->pending_queue)); assert(QUEUE_EMPTY(&loop->watcher_queue)); assert(loop->nfds == 0); #endif uv__free(loop->watchers); loop->watchers = NULL; loop->nwatchers = 0; } int uv__loop_configure(uv_loop_t* loop, uv_loop_option option, va_list ap) { if (option != UV_LOOP_BLOCK_SIGNAL) return UV_ENOSYS; if (va_arg(ap, int) != SIGPROF) return UV_EINVAL; loop->flags |= UV_LOOP_BLOCK_SIGPROF; return 0; }