/* 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 "internal.h"
#include <assert.h>
static int uv__timer_cmp(const uv_timer_t* a, const uv_timer_t* b) {
if (a->timeout < b->timeout)
return -1;
if (a->timeout > b->timeout)
return 1;
if (a < b)
return -1;
if (a > b)
return 1;
return 0;
}
RB_GENERATE_STATIC(uv__timers, uv_timer_s, tree_entry, uv__timer_cmp)
int uv_timer_init(uv_loop_t* loop, uv_timer_t* handle) {
uv__handle_init(loop, (uv_handle_t*)handle, UV_TIMER);
handle->timer_cb = NULL;
return 0;
}
int uv_timer_start(uv_timer_t* handle,
uv_timer_cb cb,
int64_t timeout,
int64_t repeat) {
assert(timeout >= 0);
assert(repeat >= 0);
if (uv__is_active(handle))
uv_timer_stop(handle);
handle->timer_cb = cb;
handle->timeout = handle->loop->time + timeout;
handle->repeat = repeat;
RB_INSERT(uv__timers, &handle->loop->timer_handles, handle);
uv__handle_start(handle);
return 0;
}
int uv_timer_stop(uv_timer_t* handle) {
if (!uv__is_active(handle))
return 0;
RB_REMOVE(uv__timers, &handle->loop->timer_handles, handle);
uv__handle_stop(handle);
return 0;
}
int uv_timer_again(uv_timer_t* handle) {
if (handle->timer_cb == NULL)
return uv__set_artificial_error(handle->loop, UV_EINVAL);
if (handle->repeat) {
uv_timer_stop(handle);
uv_timer_start(handle, handle->timer_cb, handle->repeat, handle->repeat);
}
return 0;
}
void uv_timer_set_repeat(uv_timer_t* handle, int64_t repeat) {
assert(repeat >= 0);
handle->repeat = repeat;
}
int64_t uv_timer_get_repeat(uv_timer_t* handle) {
return handle->repeat;
}
unsigned int uv__next_timeout(uv_loop_t* loop) {
uv_timer_t* handle;
handle = RB_MIN(uv__timers, &loop->timer_handles);
if (handle == NULL)
return (unsigned int) -1; /* block indefinitely */
if (handle->timeout <= loop->time)
return 0;
return handle->timeout - loop->time;
}
void uv__run_timers(uv_loop_t* loop) {
uv_timer_t* handle;
while ((handle = RB_MIN(uv__timers, &loop->timer_handles))) {
if (handle->timeout > loop->time)
break;
uv_timer_stop(handle);
uv_timer_again(handle);
handle->timer_cb(handle, 0);
}
}
void uv__timer_close(uv_timer_t* handle) {
uv_timer_stop(handle);
}