/* 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 #include "uv.h" #include "internal.h" #include "handle-inl.h" void uv_loop_watcher_endgame(uv_loop_t* loop, uv_handle_t* handle) { if (handle->flags & UV__HANDLE_CLOSING) { assert(!(handle->flags & UV_HANDLE_CLOSED)); handle->flags |= UV_HANDLE_CLOSED; uv__handle_close(handle); } } #define UV_LOOP_WATCHER_DEFINE(name, NAME) \ int uv_##name##_init(uv_loop_t* loop, uv_##name##_t* handle) { \ uv__handle_init(loop, (uv_handle_t*) handle, UV_##NAME); \ \ return 0; \ } \ \ \ int uv_##name##_start(uv_##name##_t* handle, uv_##name##_cb cb) { \ uv_loop_t* loop = handle->loop; \ uv_##name##_t* old_head; \ \ assert(handle->type == UV_##NAME); \ \ if (handle->flags & UV_HANDLE_ACTIVE) \ return 0; \ \ if (cb == NULL) \ return UV_EINVAL; \ \ old_head = loop->name##_handles; \ \ handle->name##_next = old_head; \ handle->name##_prev = NULL; \ \ if (old_head) { \ old_head->name##_prev = handle; \ } \ \ loop->name##_handles = handle; \ \ handle->name##_cb = cb; \ handle->flags |= UV_HANDLE_ACTIVE; \ uv__handle_start(handle); \ \ return 0; \ } \ \ \ int uv_##name##_stop(uv_##name##_t* handle) { \ uv_loop_t* loop = handle->loop; \ \ assert(handle->type == UV_##NAME); \ \ if (!(handle->flags & UV_HANDLE_ACTIVE)) \ return 0; \ \ /* Update loop head if needed */ \ if (loop->name##_handles == handle) { \ loop->name##_handles = handle->name##_next; \ } \ \ /* Update the iterator-next pointer of needed */ \ if (loop->next_##name##_handle == handle) { \ loop->next_##name##_handle = handle->name##_next; \ } \ \ if (handle->name##_prev) { \ handle->name##_prev->name##_next = handle->name##_next; \ } \ if (handle->name##_next) { \ handle->name##_next->name##_prev = handle->name##_prev; \ } \ \ handle->flags &= ~UV_HANDLE_ACTIVE; \ uv__handle_stop(handle); \ \ return 0; \ } \ \ \ void uv_##name##_invoke(uv_loop_t* loop) { \ uv_##name##_t* handle; \ \ (loop)->next_##name##_handle = (loop)->name##_handles; \ \ while ((loop)->next_##name##_handle != NULL) { \ handle = (loop)->next_##name##_handle; \ (loop)->next_##name##_handle = handle->name##_next; \ \ handle->name##_cb(handle, 0); \ } \ } UV_LOOP_WATCHER_DEFINE(prepare, PREPARE) UV_LOOP_WATCHER_DEFINE(check, CHECK) UV_LOOP_WATCHER_DEFINE(idle, IDLE)