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stream: remove and check callbacks safely

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Clear the callbacks from the processing thread to avoid races.
Check the callbacks in the processing thread before calling them,
we just need to check if there are functions, we checked the method when
installing the function.

Fixes #3251
This commit is contained in:
Wim Taymans 2023-06-13 09:37:28 +02:00
parent 8d62bb1e97
commit 784f003068
2 changed files with 29 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

19
src/pipewire/filter.c
View file

@ -969,10 +969,10 @@ static void call_process(struct filter *impl)
{
pw_log_trace_fp("%p: call process", impl);
if (SPA_FLAG_IS_SET(impl->flags, PW_FILTER_FLAG_RT_PROCESS)) {
spa_callbacks_call_fast(&impl->rt_callbacks, struct pw_filter_events,
process, 0, impl->rt.position);
}
else {
if (impl->rt_callbacks.funcs)
spa_callbacks_call_fast(&impl->rt_callbacks, struct pw_filter_events,
process, 0, impl->rt.position);
} else {
pw_loop_invoke(impl->main_loop,
do_call_process, 1, NULL, 0, false, impl);
}
@ -1436,10 +1436,19 @@ void pw_filter_destroy(struct pw_filter *filter)
free(impl);
}
static int
do_remove_callbacks(struct spa_loop *loop,
bool async, uint32_t seq, const void *data, size_t size, void *user_data)
{
struct filter *impl = user_data;
spa_zero(impl->rt_callbacks);
return 0;
}
static void hook_removed(struct spa_hook *hook)
{
struct filter *impl = hook->priv;
spa_zero(impl->rt_callbacks);
pw_loop_invoke(impl->data_loop, do_remove_callbacks, 1, NULL, 0, true, impl);
hook->priv = NULL;
hook->removed = NULL;
}

19
src/pipewire/stream.c
View file

@ -426,11 +426,13 @@ static inline void call_process(struct stream *impl)
pw_log_trace_fp("%p: call process rt:%u", impl, impl->process_rt);
if (impl->direction == SPA_DIRECTION_OUTPUT && update_requested(impl) <= 0)
return;
if (impl->process_rt)
spa_callbacks_call_fast(&impl->rt_callbacks, struct pw_stream_events, process, 0);
else
if (impl->process_rt) {
if (impl->rt_callbacks.funcs)
spa_callbacks_call_fast(&impl->rt_callbacks, struct pw_stream_events, process, 0);
} else {
pw_loop_invoke(impl->main_loop,
do_call_process, 1, NULL, 0, false, impl);
}
}
static int
@ -1693,10 +1695,19 @@ void pw_stream_destroy(struct pw_stream *stream)
free(impl);
}
static int
do_remove_callbacks(struct spa_loop *loop,
bool async, uint32_t seq, const void *data, size_t size, void *user_data)
{
struct stream *impl = user_data;
spa_zero(impl->rt_callbacks);
return 0;
}
static void hook_removed(struct spa_hook *hook)
{
struct stream *impl = hook->priv;
spa_zero(impl->rt_callbacks);
pw_loop_invoke(impl->data_loop, do_remove_callbacks, 1, NULL, 0, true, impl);
hook->priv = NULL;
hook->removed = NULL;
}