libuv-svace-build

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/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to
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 * deal in the Software without restriction, including without limitation the
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 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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 * sell copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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 * IN THE SOFTWARE.
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 */
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#include <assert.h>
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#include "uv.h"
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#include "internal.h"
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#include "handle-inl.h"
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void uv__loop_watcher_endgame(uv_loop_t* loop, uv_handle_t* handle) {
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  if (handle->flags & UV_HANDLE_CLOSING) {
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    assert(!(handle->flags & UV_HANDLE_CLOSED));
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    handle->flags |= UV_HANDLE_CLOSED;
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    uv__handle_close(handle);
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  }
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}
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#define UV_LOOP_WATCHER_DEFINE(name, NAME)                                    \
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  int uv_##name##_init(uv_loop_t* loop, uv_##name##_t* handle) {              \
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    uv__handle_init(loop, (uv_handle_t*) handle, UV_##NAME);                  \
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                                                                              \
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    return 0;                                                                 \
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  }                                                                           \
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                                                                              \
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                                                                              \
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  int uv_##name##_start(uv_##name##_t* handle, uv_##name##_cb cb) {           \
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    uv_loop_t* loop = handle->loop;                                           \
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    uv_##name##_t* old_head;                                                  \
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                                                                              \
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    assert(handle->type == UV_##NAME);                                        \
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                                                                              \
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    if (uv__is_active(handle))                                                \
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      return 0;                                                               \
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                                                                              \
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    if (cb == NULL)                                                           \
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      return UV_EINVAL;                                                       \
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                                                                              \
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    old_head = loop->name##_handles;                                          \
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                                                                              \
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    handle->name##_next = old_head;                                           \
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    handle->name##_prev = NULL;                                               \
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                                                                              \
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    if (old_head) {                                                           \
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      old_head->name##_prev = handle;                                         \
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    }                                                                         \
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                                                                              \
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    loop->name##_handles = handle;                                            \
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                                                                              \
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    handle->name##_cb = cb;                                                   \
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    uv__handle_start(handle);                                                 \
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                                                                              \
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    return 0;                                                                 \
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  }                                                                           \
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                                                                              \
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                                                                              \
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  int uv_##name##_stop(uv_##name##_t* handle) {                               \
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    uv_loop_t* loop = handle->loop;                                           \
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                                                                              \
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    assert(handle->type == UV_##NAME);                                        \
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                                                                              \
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    if (!uv__is_active(handle))                                               \
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      return 0;                                                               \
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                                                                              \
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    /* Update loop head if needed */                                          \
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    if (loop->name##_handles == handle) {                                     \
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      loop->name##_handles = handle->name##_next;                             \
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    }                                                                         \
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                                                                              \
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    /* Update the iterator-next pointer of needed */                          \
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    if (loop->next_##name##_handle == handle) {                               \
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      loop->next_##name##_handle = handle->name##_next;                       \
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    }                                                                         \
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                                                                              \
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    if (handle->name##_prev) {                                                \
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      handle->name##_prev->name##_next = handle->name##_next;                 \
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    }                                                                         \
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    if (handle->name##_next) {                                                \
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      handle->name##_next->name##_prev = handle->name##_prev;                 \
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    }                                                                         \
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                                                                              \
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    uv__handle_stop(handle);                                                  \
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                                                                              \
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    return 0;                                                                 \
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  }                                                                           \
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                                                                              \
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                                                                              \
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  void uv__##name##_invoke(uv_loop_t* loop) {                                 \
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    uv_##name##_t* handle;                                                    \
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                                                                              \
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    (loop)->next_##name##_handle = (loop)->name##_handles;                    \
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                                                                              \
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    while ((loop)->next_##name##_handle != NULL) {                            \
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      handle = (loop)->next_##name##_handle;                                  \
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      (loop)->next_##name##_handle = handle->name##_next;                     \
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                                                                              \
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      handle->name##_cb(handle);                                              \
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    }                                                                         \
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  }
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UV_LOOP_WATCHER_DEFINE(prepare, PREPARE)
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UV_LOOP_WATCHER_DEFINE(check, CHECK)
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UV_LOOP_WATCHER_DEFINE(idle, IDLE)
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