SurfaceFlinger: add explicit register for DISPLAY_EVENT_CONFIG_CHANGED
When display refresh rate changes, SF fires DISPLAY_EVENT_CONFIG_CHANGED
thru DisplayEventReceiver. If the other end of the pipe doesn't consume
the events it may lead to pipe full and dropping of events. Furthermore,
The only clients interested in this event in DisplayManager and hwui.
To avoid spamming all clients with this event, this change is adding an
explicit register for DISPLAY_EVENT_CONFIG_CHANGED events.
Bug: 131688378
Test: adb shell /data/nativetest64/libsurfaceflinger_unittest/libsurfaceflinger_unittest
Test: trigger config change and observe logcat
Change-Id: I5973a1ecc1f3e3ff8d8a0cba19db0e49ef0d5341
(cherry picked from commit 0f4a1b19009a1e71ed2100b63b04aa015a111b44)
diff --git a/services/surfaceflinger/Scheduler/EventThread.cpp b/services/surfaceflinger/Scheduler/EventThread.cpp
index 05bad4d..9d1f777 100644
--- a/services/surfaceflinger/Scheduler/EventThread.cpp
+++ b/services/surfaceflinger/Scheduler/EventThread.cpp
@@ -76,6 +76,10 @@
return StringPrintf("VSync{displayId=%" ANDROID_PHYSICAL_DISPLAY_ID_FORMAT
", count=%u}",
event.header.displayId, event.vsync.count);
+ case DisplayEventReceiver::DISPLAY_EVENT_CONFIG_CHANGED:
+ return StringPrintf("ConfigChanged{displayId=%" ANDROID_PHYSICAL_DISPLAY_ID_FORMAT
+ ", configId=%u}",
+ event.header.displayId, event.config.configId);
default:
return "Event{}";
}
@@ -107,8 +111,10 @@
} // namespace
EventThreadConnection::EventThreadConnection(EventThread* eventThread,
- ResyncCallback resyncCallback)
+ ResyncCallback resyncCallback,
+ ISurfaceComposer::ConfigChanged configChanged)
: resyncCallback(std::move(resyncCallback)),
+ configChanged(configChanged),
mEventThread(eventThread),
mChannel(gui::BitTube::DefaultSize) {}
@@ -203,8 +209,10 @@
mVSyncSource->setPhaseOffset(phaseOffset);
}
-sp<EventThreadConnection> EventThread::createEventConnection(ResyncCallback resyncCallback) const {
- return new EventThreadConnection(const_cast<EventThread*>(this), std::move(resyncCallback));
+sp<EventThreadConnection> EventThread::createEventConnection(
+ ResyncCallback resyncCallback, ISurfaceComposer::ConfigChanged configChanged) const {
+ return new EventThreadConnection(const_cast<EventThread*>(this), std::move(resyncCallback),
+ configChanged);
}
status_t EventThread::registerDisplayEventConnection(const sp<EventThreadConnection>& connection) {
@@ -398,9 +406,11 @@
const sp<EventThreadConnection>& connection) const {
switch (event.header.type) {
case DisplayEventReceiver::DISPLAY_EVENT_HOTPLUG:
- case DisplayEventReceiver::DISPLAY_EVENT_CONFIG_CHANGED:
return true;
+ case DisplayEventReceiver::DISPLAY_EVENT_CONFIG_CHANGED:
+ return connection->configChanged == ISurfaceComposer::eConfigChangedDispatch;
+
case DisplayEventReceiver::DISPLAY_EVENT_VSYNC:
switch (connection->vsyncRequest) {
case VSyncRequest::None:
diff --git a/services/surfaceflinger/Scheduler/EventThread.h b/services/surfaceflinger/Scheduler/EventThread.h
index 61530c6..dd23b88 100644
--- a/services/surfaceflinger/Scheduler/EventThread.h
+++ b/services/surfaceflinger/Scheduler/EventThread.h
@@ -69,7 +69,8 @@
class EventThreadConnection : public BnDisplayEventConnection {
public:
- EventThreadConnection(EventThread*, ResyncCallback);
+ EventThreadConnection(EventThread*, ResyncCallback,
+ ISurfaceComposer::ConfigChanged configChanged);
virtual ~EventThreadConnection();
virtual status_t postEvent(const DisplayEventReceiver::Event& event);
@@ -82,6 +83,7 @@
const ResyncCallback resyncCallback;
VSyncRequest vsyncRequest = VSyncRequest::None;
+ const ISurfaceComposer::ConfigChanged configChanged;
private:
virtual void onFirstRef();
@@ -93,7 +95,8 @@
public:
virtual ~EventThread();
- virtual sp<EventThreadConnection> createEventConnection(ResyncCallback) const = 0;
+ virtual sp<EventThreadConnection> createEventConnection(
+ ResyncCallback, ISurfaceComposer::ConfigChanged configChanged) const = 0;
// called before the screen is turned off from main thread
virtual void onScreenReleased() = 0;
@@ -128,7 +131,8 @@
EventThread(std::unique_ptr<VSyncSource>, InterceptVSyncsCallback, const char* threadName);
~EventThread();
- sp<EventThreadConnection> createEventConnection(ResyncCallback) const override;
+ sp<EventThreadConnection> createEventConnection(
+ ResyncCallback, ISurfaceComposer::ConfigChanged configChanged) const override;
status_t registerDisplayEventConnection(const sp<EventThreadConnection>& connection) override;
void setVsyncRate(uint32_t rate, const sp<EventThreadConnection>& connection) override;
diff --git a/services/surfaceflinger/Scheduler/MessageQueue.cpp b/services/surfaceflinger/Scheduler/MessageQueue.cpp
index baf900d..fcb307f 100644
--- a/services/surfaceflinger/Scheduler/MessageQueue.cpp
+++ b/services/surfaceflinger/Scheduler/MessageQueue.cpp
@@ -96,7 +96,8 @@
}
mEventThread = eventThread;
- mEvents = eventThread->createEventConnection(std::move(resyncCallback));
+ mEvents = eventThread->createEventConnection(std::move(resyncCallback),
+ ISurfaceComposer::eConfigChangedSuppress);
mEvents->stealReceiveChannel(&mEventTube);
mLooper->addFd(mEventTube.getFd(), 0, Looper::EVENT_INPUT, MessageQueue::cb_eventReceiver,
this);
diff --git a/services/surfaceflinger/Scheduler/Scheduler.cpp b/services/surfaceflinger/Scheduler/Scheduler.cpp
index 513436a..7a040aa 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.cpp
+++ b/services/surfaceflinger/Scheduler/Scheduler.cpp
@@ -129,7 +129,8 @@
std::move(interceptCallback));
auto eventThreadConnection =
- createConnectionInternal(eventThread.get(), std::move(resyncCallback));
+ createConnectionInternal(eventThread.get(), std::move(resyncCallback),
+ ISurfaceComposer::eConfigChangedSuppress);
mConnections.emplace(id,
std::make_unique<Connection>(new ConnectionHandle(id),
eventThreadConnection,
@@ -146,16 +147,18 @@
std::move(interceptCallback), connectionName);
}
-sp<EventThreadConnection> Scheduler::createConnectionInternal(EventThread* eventThread,
- ResyncCallback&& resyncCallback) {
- return eventThread->createEventConnection(std::move(resyncCallback));
+sp<EventThreadConnection> Scheduler::createConnectionInternal(
+ EventThread* eventThread, ResyncCallback&& resyncCallback,
+ ISurfaceComposer::ConfigChanged configChanged) {
+ return eventThread->createEventConnection(std::move(resyncCallback), configChanged);
}
sp<IDisplayEventConnection> Scheduler::createDisplayEventConnection(
- const sp<Scheduler::ConnectionHandle>& handle, ResyncCallback resyncCallback) {
+ const sp<Scheduler::ConnectionHandle>& handle, ResyncCallback resyncCallback,
+ ISurfaceComposer::ConfigChanged configChanged) {
RETURN_VALUE_IF_INVALID(nullptr);
return createConnectionInternal(mConnections[handle->id]->thread.get(),
- std::move(resyncCallback));
+ std::move(resyncCallback), configChanged);
}
EventThread* Scheduler::getEventThread(const sp<Scheduler::ConnectionHandle>& handle) {
diff --git a/services/surfaceflinger/Scheduler/Scheduler.h b/services/surfaceflinger/Scheduler/Scheduler.h
index 96d4bd5..f5a3a08 100644
--- a/services/surfaceflinger/Scheduler/Scheduler.h
+++ b/services/surfaceflinger/Scheduler/Scheduler.h
@@ -100,8 +100,9 @@
ResyncCallback,
impl::EventThread::InterceptVSyncsCallback);
- sp<IDisplayEventConnection> createDisplayEventConnection(const sp<ConnectionHandle>& handle,
- ResyncCallback);
+ sp<IDisplayEventConnection> createDisplayEventConnection(
+ const sp<ConnectionHandle>& handle, ResyncCallback,
+ ISurfaceComposer::ConfigChanged configChanged);
// Getter methods.
EventThread* getEventThread(const sp<ConnectionHandle>& handle);
@@ -192,7 +193,8 @@
enum class TouchState { INACTIVE, ACTIVE };
// Creates a connection on the given EventThread and forwards the given callbacks.
- sp<EventThreadConnection> createConnectionInternal(EventThread*, ResyncCallback&&);
+ sp<EventThreadConnection> createConnectionInternal(EventThread*, ResyncCallback&&,
+ ISurfaceComposer::ConfigChanged);
nsecs_t calculateAverage() const;
void updateFrameSkipping(const int64_t skipCount);