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core: wait for dmabuf readiness (#9806)

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* add doOnReadable to event loop manager

* move syncTimeline addWaiter to doOnReadable

* wait on dmabuf buffers to be readable

* don't over synchronize in scanout, also give present feedback on same buffer commit
This commit is contained in:
Ikalco
2025-04-15 18:02:31 -05:00
committed by GitHub
parent ffd6cf65e4
commit 0e521788bc
8 changed files with 147 additions and 116 deletions
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42
src/managers/eventLoop/EventLoopManager.cpp
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@@ -26,6 +26,11 @@ CEventLoopManager::~CEventLoopManager() {
wl_event_source_remove(eventSourceData.eventSource);
}
for (auto const& w : m_vReadableWaiters) {
if (w->source != nullptr)
wl_event_source_remove(w->source);
}
if (m_sWayland.eventSource)
wl_event_source_remove(m_sWayland.eventSource);
if (m_sIdle.eventSource)
@@ -50,6 +55,33 @@ static int configWatcherWrite(int fd, uint32_t mask, void* data) {
return 0;
}
static int handleWaiterFD(int fd, uint32_t mask, void* data) {
if (mask & (WL_EVENT_HANGUP | WL_EVENT_ERROR)) {
Debug::log(ERR, "handleWaiterFD: readable waiter error");
return 0;
}
if (mask & WL_EVENT_READABLE)
g_pEventLoopManager->onFdReadable((CEventLoopManager::SReadableWaiter*)data);
return 0;
}
void CEventLoopManager::onFdReadable(SReadableWaiter* waiter) {
auto it = std::ranges::find_if(m_vReadableWaiters, [waiter](const UP<SReadableWaiter>& w) { return waiter == w.get() && w->fd == waiter->fd && w->source == waiter->source; });
if (waiter->source) {
wl_event_source_remove(waiter->source);
waiter->source = nullptr;
}
if (waiter->fn)
waiter->fn();
if (it != m_vReadableWaiters.end())
m_vReadableWaiters.erase(it);
}
void CEventLoopManager::enterLoop() {
m_sWayland.eventSource = wl_event_loop_add_fd(m_sWayland.loop, m_sTimers.timerfd.get(), WL_EVENT_READABLE, timerWrite, nullptr);
@@ -143,6 +175,16 @@ void CEventLoopManager::doLater(const std::function<void()>& fn) {
&m_sIdle);
}
void CEventLoopManager::doOnReadable(CFileDescriptor fd, const std::function<void()>& fn) {
if (!fd.isValid() || fd.isReadable()) {
fn();
return;
}
auto& waiter = m_vReadableWaiters.emplace_back(makeUnique<SReadableWaiter>(nullptr, std::move(fd), fn));
waiter->source = wl_event_loop_add_fd(g_pEventLoopManager->m_sWayland.loop, waiter->fd.get(), WL_EVENT_READABLE, ::handleWaiterFD, waiter.get());
}
void CEventLoopManager::syncPollFDs() {
auto aqPollFDs = g_pCompositor->m_pAqBackend->getPollFDs();