diff options
Diffstat (limited to 'Utilities/cmlibuv/src/unix/loop.c')
| -rw-r--r-- | Utilities/cmlibuv/src/unix/loop.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/Utilities/cmlibuv/src/unix/loop.c b/Utilities/cmlibuv/src/unix/loop.c new file mode 100644 index 0000000..bd63c2f --- /dev/null +++ b/Utilities/cmlibuv/src/unix/loop.c @@ -0,0 +1,159 @@ +/* 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 "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; + + uv__signal_global_once_init(); + + 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->active_reqs); + 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->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); + uv__async_init(&loop->async_watcher); + 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; + + 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; +} + + +void uv__loop_close(uv_loop_t* loop) { + uv__signal_loop_cleanup(loop); + uv__platform_loop_delete(loop); + uv__async_stop(loop, &loop->async_watcher); + + 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; +} |