db83ffe3b4
-Wdeclaration-after-statement PR-URL: https://github.com/libuv/libuv/pull/990 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
93 lines
2.7 KiB
C
93 lines
2.7 KiB
C
/* 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 <assert.h>
|
|
|
|
#include "uv.h"
|
|
#include "internal.h"
|
|
#include "handle-inl.h"
|
|
#include "req-inl.h"
|
|
|
|
|
|
void uv_async_endgame(uv_loop_t* loop, uv_async_t* handle) {
|
|
assert(handle->flags & UV__HANDLE_CLOSING);
|
|
assert(!(handle->flags & UV_HANDLE_CLOSED));
|
|
uv__handle_close(handle);
|
|
}
|
|
|
|
|
|
int uv_async_init(uv_loop_t* loop, uv_async_t* handle, uv_async_cb async_cb) {
|
|
uv__handle_init(loop, (uv_handle_t*) handle, UV_ASYNC);
|
|
handle->async_sent = 0;
|
|
handle->async_cb = async_cb;
|
|
|
|
QUEUE_INSERT_TAIL(&loop->async_handles, &handle->queue);
|
|
uv__handle_start(handle);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
void uv_async_close(uv_loop_t* loop, uv_async_t* handle) {
|
|
QUEUE_REMOVE(&handle->queue);
|
|
uv_want_endgame(loop, (uv_handle_t*) handle);
|
|
uv__handle_closing(handle);
|
|
}
|
|
|
|
|
|
int uv_async_send(uv_async_t* handle) {
|
|
/* First do a cheap read. */
|
|
if (handle->async_sent != 0)
|
|
return 0;
|
|
|
|
if (InterlockedExchange(&handle->async_sent, 1) == 0) {
|
|
uv_loop_t* loop = handle->loop;
|
|
POST_COMPLETION_FOR_REQ(loop, &loop->async_req);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
void uv_process_async_wakeup_req(uv_loop_t* loop,
|
|
uv_req_t* req) {
|
|
QUEUE queue;
|
|
QUEUE* q;
|
|
uv_async_t* h;
|
|
|
|
assert(req->type == UV_WAKEUP);
|
|
|
|
QUEUE_MOVE(&loop->async_handles, &queue);
|
|
while (!QUEUE_EMPTY(&queue)) {
|
|
q = QUEUE_HEAD(&queue);
|
|
h = QUEUE_DATA(q, uv_async_t, queue);
|
|
|
|
QUEUE_REMOVE(q);
|
|
QUEUE_INSERT_TAIL(&loop->async_handles, q);
|
|
|
|
if (InterlockedExchange(&h->async_sent, 0) == 0)
|
|
continue;
|
|
|
|
if (h->async_cb != NULL)
|
|
h->async_cb(h);
|
|
}
|
|
}
|