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				https://gitlab.freedesktop.org/pipewire/pipewire.git
				synced 2025-11-03 09:01:54 -05:00 
			
		
		
		
	handle EINTR and EAGAIN
Just do the call again instead of failing or logging an error. Fixes #358
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					 8 changed files with 33 additions and 12 deletions
				
			
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					@ -1078,11 +1078,17 @@ static inline uint32_t cycle_run(struct client *c)
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	struct pw_node_activation *driver = c->rt.driver_activation;
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						struct pw_node_activation *driver = c->rt.driver_activation;
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	/* this is blocking if nothing ready */
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						/* this is blocking if nothing ready */
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	if (SPA_UNLIKELY(read(fd, &cmd, sizeof(cmd)) != sizeof(cmd))) {
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						while (true) {
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		pw_log_warn(NAME" %p: read failed %m", c);
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							if (SPA_UNLIKELY(read(fd, &cmd, sizeof(cmd)) != sizeof(cmd))) {
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		if (errno == EWOULDBLOCK)
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								if (errno == EAGAIN || errno == EINTR)
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			return 0;
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									continue;
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	} else if (SPA_UNLIKELY(cmd > 1))
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								if (errno == EWOULDBLOCK)
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									return 0;
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								pw_log_warn(NAME" %p: read failed %m", c);
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							}
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							break;
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						}
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						if (SPA_UNLIKELY(cmd > 1))
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		pw_log_warn(NAME" %p: missed %"PRIu64" wakeups", c, cmd - 1);
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							pw_log_warn(NAME" %p: missed %"PRIu64" wakeups", c, cmd - 1);
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	clock_gettime(CLOCK_MONOTONIC, &ts);
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						clock_gettime(CLOCK_MONOTONIC, &ts);
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					@ -1654,11 +1654,14 @@ pa_operation* pa_context_subscribe(pa_context *c, pa_subscription_mask_t m, pa_c
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static void io_event_cb(pa_mainloop_api*ea, pa_io_event* e, int fd, pa_io_event_flags_t events, void *userdata)
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					static void io_event_cb(pa_mainloop_api*ea, pa_io_event* e, int fd, pa_io_event_flags_t events, void *userdata)
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{
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					{
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						int res;
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	pa_context *c = userdata;
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						pa_context *c = userdata;
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	if (events & PA_IO_EVENT_INPUT) {
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						if (events & PA_IO_EVENT_INPUT) {
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		pw_log_debug("%p: iterate loop %p", c, c->loop);
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							pw_log_debug("%p: iterate loop %p", c, c->loop);
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		pw_loop_enter(c->loop);
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							pw_loop_enter(c->loop);
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		pw_loop_iterate(c->loop, -1);
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							do {
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								res = pw_loop_iterate(c->loop, 0);
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							 } while (res == -EINTR || res == -EAGAIN);
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		pw_loop_leave(c->loop);
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							pw_loop_leave(c->loop);
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	}
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						}
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}
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					}
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					@ -53,7 +53,9 @@ static gboolean source_dispatch (GSource *source, GSourceFunc callback, gpointer
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	int result;
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						int result;
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	pw_loop_enter (s->loop);
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						pw_loop_enter (s->loop);
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	result = pw_loop_iterate (s->loop, 0);
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						do {
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							result = pw_loop_iterate (s->loop, 0);
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						} while (result == -EINTR || result == -EAGAIN);
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	pw_loop_leave (s->loop);
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						pw_loop_leave (s->loop);
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	if (result < 0)
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						if (result < 0)
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					@ -352,7 +352,9 @@ int pa_mainloop_poll(pa_mainloop *m)
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	if (do_iterate) {
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						if (do_iterate) {
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		pw_loop_enter(m->loop);
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							pw_loop_enter(m->loop);
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		res = pw_loop_iterate(m->loop, timeout);
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							do {
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								res = pw_loop_iterate(m->loop, timeout);
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							} while (res == -EINTR || res == -EAGAIN);
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		pw_loop_leave(m->loop);
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							pw_loop_leave(m->loop);
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	}
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						}
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					@ -1345,6 +1345,8 @@ int sm_media_session_roundtrip(struct sm_media_session *sess)
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	pw_loop_enter(loop);
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						pw_loop_enter(loop);
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	while (!done) {
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						while (!done) {
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		if ((res = pw_loop_iterate(loop, -1)) < 0) {
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							if ((res = pw_loop_iterate(loop, -1)) < 0) {
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								if (res == -EINTR || res == -EAGAIN)
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									continue;
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			pw_log_warn(NAME" %p: iterate error %d (%s)",
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								pw_log_warn(NAME" %p: iterate error %d (%s)",
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				loop, res, spa_strerror(res));
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									loop, res, spa_strerror(res));
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			break;
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								break;
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					@ -43,7 +43,7 @@ int pw_data_loop_wait(struct pw_data_loop *this, int timeout)
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			break;
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								break;
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		}
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							}
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		if ((res = pw_loop_iterate(this->loop, timeout)) < 0) {
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							if ((res = pw_loop_iterate(this->loop, timeout)) < 0) {
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			if (errno == EINTR)
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								if (res == -EINTR || res == -EAGAIN)
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				continue;
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									continue;
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		}
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							}
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		break;
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							break;
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					@ -77,7 +77,7 @@ static void *do_loop(void *user_data)
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	while (this->running) {
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						while (this->running) {
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		if ((res = pw_loop_iterate(this->loop, -1)) < 0) {
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							if ((res = pw_loop_iterate(this->loop, -1)) < 0) {
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			if (errno == EINTR)
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								if (res == -EINTR || res == -EAGAIN)
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				continue;
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									continue;
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			pw_log_error(NAME" %p: iterate error %d (%s)",
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								pw_log_error(NAME" %p: iterate error %d (%s)",
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					this, res, spa_strerror(res));
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										this, res, spa_strerror(res));
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					@ -153,9 +153,12 @@ int pw_main_loop_run(struct pw_main_loop *loop)
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	loop->running = true;
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						loop->running = true;
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	pw_loop_enter(loop->loop);
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						pw_loop_enter(loop->loop);
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	while (loop->running) {
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						while (loop->running) {
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		if ((res = pw_loop_iterate(loop->loop, -1)) < 0)
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							if ((res = pw_loop_iterate(loop->loop, -1)) < 0) {
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								if (res == -EINTR || res == -EAGAIN)
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									continue;
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			pw_log_warn(NAME" %p: iterate error %d (%s)",
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								pw_log_warn(NAME" %p: iterate error %d (%s)",
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					loop, res, spa_strerror(res));
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										loop, res, spa_strerror(res));
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							}
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	}
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						}
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	pw_loop_leave(loop->loop);
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						pw_loop_leave(loop->loop);
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	return res;
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						return res;
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					@ -238,9 +238,12 @@ static void *do_loop(void *user_data)
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	pw_loop_enter(this->loop);
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						pw_loop_enter(this->loop);
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	while (this->running) {
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						while (this->running) {
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		if ((res = pw_loop_iterate(this->loop, -1)) < 0)
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							if ((res = pw_loop_iterate(this->loop, -1)) < 0) {
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								if (res == -EINTR || res == -EAGAIN)
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									continue;
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			pw_log_warn(NAME" %p: iterate error %d (%s)",
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								pw_log_warn(NAME" %p: iterate error %d (%s)",
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					this, res, spa_strerror(res));
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										this, res, spa_strerror(res));
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							}
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	}
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						}
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	pw_log_debug(NAME" %p: leave thread", this);
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						pw_log_debug(NAME" %p: leave thread", this);
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	pw_loop_leave(this->loop);
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						pw_loop_leave(this->loop);
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