int uv_run(uv_loop_t* loop, uv_run_mode mode) {
int timeout;
int r;
r = uv__loop_alive(loop);
if (!r)
uv__update_time(loop);
while (r != 0 && loop->stop_flag == 0) {
UV_TICK_START(loop, mode);
uv__update_time(loop);
uv__run_timers(loop);
uv__run_pending(loop);
uv__run_idle(loop);
uv__run_prepare(loop);
timeout = 0;
if ((mode & UV_RUN_NOWAIT) == 0)
timeout = uv_backend_timeout(loop);
uv__io_poll(loop, timeout);
uv__run_check(loop);
uv__run_closing_handles(loop);
if (mode == UV_RUN_ONCE) {
/* UV_RUN_ONCE implies forward progess: at least one callback must have
* been invoked when it returns. uv__io_poll() can return without doing
* I/O (meaning: no callbacks) when its timeout expires - which means we
* have pending timers that satisfy the forward progress constraint.
*
* UV_RUN_NOWAIT makes no guarantees about progress so it's omitted from
* the check.
*/
uv__update_time(loop);
uv__run_timers(loop);
}
r = uv__loop_alive(loop);
UV_TICK_STOP(loop, mode);
if (mode & (UV_RUN_ONCE | UV_RUN_NOWAIT))
break;
}
/* The if statement lets gcc compile it to a conditional store. Avoids
* dirtying a cache line.
*/
if (loop->stop_flag != 0)
loop->stop_flag = 0;
return r;
}
static int uv__run(uv_loop_t* loop) {
uv__run_idle(loop);
uv__run_pending(loop);
if (uv__has_active_handles(loop) || uv__has_active_reqs(loop)) {
uv__run_prepare(loop);
/* Need to poll even if there are no active handles left, otherwise
* uv_work_t reqs won't complete...
*/
uv__poll(loop, uv__should_block(loop));
uv__run_check(loop);
}
return uv__has_pending_handles(loop)
|| uv__has_active_handles(loop)
|| uv__has_active_reqs(loop);
}
int uv_run2(uv_loop_t* loop, uv_run_mode mode) {
int r;
if (!uv__loop_alive(loop))
return 0;
do {
uv__update_time(loop);
uv__run_timers(loop);
uv__run_idle(loop);
uv__run_prepare(loop);
uv__run_pending(loop);
uv__io_poll(loop, (mode & UV_RUN_NOWAIT ? 0 : uv_backend_timeout(loop)));
uv__run_check(loop);
uv__run_closing_handles(loop);
r = uv__loop_alive(loop);
} while (r && !(mode & (UV_RUN_ONCE | UV_RUN_NOWAIT)));
return r;
}
int uv_run(uv_loop_t* loop, uv_run_mode mode) {
int timeout;
int r;
r = uv__loop_alive(loop);
while (r != 0 && loop->stop_flag == 0) {
UV_TICK_START(loop, mode);
uv__update_time(loop);
uv__run_timers(loop);
uv__run_idle(loop);
uv__run_prepare(loop);
uv__run_pending(loop);
timeout = 0;
if ((mode & UV_RUN_NOWAIT) == 0)
timeout = uv_backend_timeout(loop);
uv__io_poll(loop, timeout);
uv__run_check(loop);
uv__run_closing_handles(loop);
r = uv__loop_alive(loop);
UV_TICK_STOP(loop, mode);
if (mode & (UV_RUN_ONCE | UV_RUN_NOWAIT))
break;
}
/* The if statement lets gcc compile it to a conditional store. Avoids
* dirtying a cache line.
*/
if (loop->stop_flag != 0)
loop->stop_flag = 0;
return r;
}
