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loop: always place the invoke item in the queue

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Always place the invoke item in the queue and then either signal the
other thread or flush the queue when not already flushing.
This commit is contained in:
Wim Taymans 2020-11-16 15:16:20 +01:00
parent 9f9be7d7f2
commit 0d9cc9e36e
1 changed files with 55 additions and 55 deletions
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110
spa/plugins/support/loop.c
View file

@ -136,6 +136,7 @@ static void flush_items(struct impl *impl)
item = SPA_MEMBER(impl->buffer_data, index & (DATAS_SIZE - 1), struct invoke_item);
block = item->block;
spa_log_trace(impl->log, NAME " %p: flush item %p", impl, item);
item->res = item->func ? item->func(&impl->loop,
true, item->seq, item->data, item->size,
item->user_data) : 0;
@ -164,71 +165,70 @@ loop_invoke(void *object,
bool in_thread = pthread_equal(impl->thread, pthread_self());
struct invoke_item *item;
int res;
int32_t filled;
uint32_t avail, idx, offset, l0;
if (in_thread && !impl->flushing) {
flush_items(impl);
res = func ? func(&impl->loop, false, seq, data, size, user_data) : 0;
filled = spa_ringbuffer_get_write_index(&impl->buffer, &idx);
if (filled < 0 || filled > DATAS_SIZE) {
spa_log_warn(impl->log, NAME " %p: queue xrun %d", impl, filled);
return -EPIPE;
}
avail = DATAS_SIZE - filled;
if (avail < sizeof(struct invoke_item)) {
spa_log_warn(impl->log, NAME " %p: queue full %d", impl, avail);
return -EPIPE;
}
offset = idx & (DATAS_SIZE - 1);
l0 = DATAS_SIZE - offset;
item = SPA_MEMBER(impl->buffer_data, offset, struct invoke_item);
item->func = func;
item->seq = seq;
item->size = size;
item->block = block;
item->user_data = user_data;
spa_log_trace(impl->log, NAME " %p: add item %p filled:%d", impl, item, filled);
if (l0 > sizeof(struct invoke_item) + size) {
item->data = SPA_MEMBER(item, sizeof(struct invoke_item), void);
item->item_size = sizeof(struct invoke_item) + size;
if (l0 < sizeof(struct invoke_item) + item->item_size)
item->item_size = l0;
} else {
int32_t filled;
uint32_t avail, idx, offset, l0;
item->data = impl->buffer_data;
item->item_size = l0 + size;
}
memcpy(item->data, data, size);
filled = spa_ringbuffer_get_write_index(&impl->buffer, &idx);
if (filled < 0 || filled > DATAS_SIZE) {
spa_log_warn(impl->log, NAME " %p: queue xrun %d", impl, filled);
return -EPIPE;
}
avail = DATAS_SIZE - filled;
if (avail < sizeof(struct invoke_item)) {
spa_log_warn(impl->log, NAME " %p: queue full %d", impl, avail);
return -EPIPE;
}
offset = idx & (DATAS_SIZE - 1);
l0 = DATAS_SIZE - offset;
item = SPA_MEMBER(impl->buffer_data, offset, struct invoke_item);
item->func = func;
item->seq = seq;
item->size = size;
item->block = block;
item->user_data = user_data;
spa_log_trace(impl->log, NAME " %p: add item %p filled:%d", impl, item, filled);
if (l0 > sizeof(struct invoke_item) + size) {
item->data = SPA_MEMBER(item, sizeof(struct invoke_item), void);
item->item_size = sizeof(struct invoke_item) + size;
if (l0 < sizeof(struct invoke_item) + item->item_size)
item->item_size = l0;
} else {
item->data = impl->buffer_data;
item->item_size = l0 + size;
}
memcpy(item->data, data, size);
spa_ringbuffer_write_update(&impl->buffer, idx + item->item_size);
spa_ringbuffer_write_update(&impl->buffer, idx + item->item_size);
if (in_thread) {
if (!impl->flushing)
flush_items(impl);
} else {
loop_signal_event(impl, impl->wakeup);
}
if (block) {
uint64_t count = 1;
if (block) {
uint64_t count = 1;
spa_loop_control_hook_before(&impl->hooks_list);
spa_loop_control_hook_before(&impl->hooks_list);
if ((res = spa_system_eventfd_read(impl->system, impl->ack_fd, &count)) < 0)
spa_log_warn(impl->log, NAME " %p: failed to read event fd: %s",
impl, spa_strerror(res));
if ((res = spa_system_eventfd_read(impl->system, impl->ack_fd, &count)) < 0)
spa_log_warn(impl->log, NAME " %p: failed to read event fd: %s",
impl, spa_strerror(res));
spa_loop_control_hook_after(&impl->hooks_list);
spa_loop_control_hook_after(&impl->hooks_list);
res = item->res;
}
else {
if (seq != SPA_ID_INVALID)
res = SPA_RESULT_RETURN_ASYNC(seq);
else
res = 0;
}
res = item->res;
}
else {
if (seq != SPA_ID_INVALID)
res = SPA_RESULT_RETURN_ASYNC(seq);
else
res = 0;
}
return res;
}