Merge "SF: handle long waiting Layer sync point" am: ff2623a3d5
Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1457858
MUST ONLY BE SUBMITTED BY AUTOMERGER
Change-Id: Ice63faf3ecec4687ed1b4a55b08b6322a4001a74
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index e9965d4..55af849 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -793,7 +793,9 @@
// to be applied as per normal (no synchronization).
mCurrentState.barrierLayer_legacy = nullptr;
} else {
- auto syncPoint = std::make_shared<SyncPoint>(mCurrentState.frameNumber_legacy, this);
+ auto syncPoint = std::make_shared<SyncPoint>(mCurrentState.frameNumber_legacy,
+ this,
+ barrierLayer);
if (barrierLayer->addSyncPoint(syncPoint)) {
std::stringstream ss;
ss << "Adding sync point " << mCurrentState.frameNumber_legacy;
@@ -818,7 +820,7 @@
ATRACE_CALL();
*stateToCommit = mPendingStates[0];
- mPendingStates.removeAt(0);
+ mPendingStates.pop_front();
ATRACE_INT(mTransactionName.c_str(), mPendingStates.size());
}
@@ -857,6 +859,7 @@
mRemoteSyncPoints.pop_front();
} else {
ATRACE_NAME("!frameIsAvailable");
+ mRemoteSyncPoints.front()->checkTimeoutAndLog();
break;
}
} else {
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 2c90c92..d071710 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -35,6 +35,7 @@
#include <utils/RefBase.h>
#include <utils/Timers.h>
+#include <chrono>
#include <cstdint>
#include <list>
#include <optional>
@@ -881,12 +882,14 @@
class SyncPoint {
public:
- explicit SyncPoint(uint64_t frameNumber, wp<Layer> requestedSyncLayer)
+ explicit SyncPoint(uint64_t frameNumber,
+ wp<Layer> requestedSyncLayer,
+ wp<Layer> barrierLayer_legacy)
: mFrameNumber(frameNumber),
mFrameIsAvailable(false),
mTransactionIsApplied(false),
- mRequestedSyncLayer(requestedSyncLayer) {}
-
+ mRequestedSyncLayer(requestedSyncLayer),
+ mBarrierLayer_legacy(barrierLayer_legacy) {}
uint64_t getFrameNumber() const { return mFrameNumber; }
bool frameIsAvailable() const { return mFrameIsAvailable; }
@@ -899,11 +902,41 @@
sp<Layer> getRequestedSyncLayer() { return mRequestedSyncLayer.promote(); }
+ sp<Layer> getBarrierLayer() const { return mBarrierLayer_legacy.promote(); }
+
+ bool isTimeout() const {
+ using namespace std::chrono_literals;
+ static constexpr std::chrono::nanoseconds TIMEOUT_THRESHOLD = 1s;
+
+ return std::chrono::steady_clock::now() - mCreateTimeStamp > TIMEOUT_THRESHOLD;
+ }
+
+ void checkTimeoutAndLog() {
+ using namespace std::chrono_literals;
+ static constexpr std::chrono::nanoseconds LOG_PERIOD = 1s;
+
+ if (!frameIsAvailable() && isTimeout()) {
+ const auto now = std::chrono::steady_clock::now();
+ if (now - mLastLogTime > LOG_PERIOD) {
+ mLastLogTime = now;
+ sp<Layer> requestedSyncLayer = getRequestedSyncLayer();
+ sp<Layer> barrierLayer = getBarrierLayer();
+ ALOGW("[%s] sync point %" PRIu64 " wait timeout %lld for %s",
+ requestedSyncLayer ? requestedSyncLayer->getDebugName() : "Removed",
+ mFrameNumber, (now - mCreateTimeStamp).count(),
+ barrierLayer ? barrierLayer->getDebugName() : "Removed");
+ }
+ }
+ }
private:
const uint64_t mFrameNumber;
std::atomic<bool> mFrameIsAvailable;
std::atomic<bool> mTransactionIsApplied;
wp<Layer> mRequestedSyncLayer;
+ wp<Layer> mBarrierLayer_legacy;
+ const std::chrono::time_point<std::chrono::steady_clock> mCreateTimeStamp =
+ std::chrono::steady_clock::now();
+ std::chrono::time_point<std::chrono::steady_clock> mLastLogTime;
};
// SyncPoints which will be signaled when the correct frame is at the head
@@ -984,12 +1017,12 @@
State mDrawingState;
// Store a copy of the pending state so that the drawing thread can access the
// states without a lock.
- Vector<State> mPendingStatesSnapshot;
+ std::deque<State> mPendingStatesSnapshot;
// these are protected by an external lock (mStateLock)
State mCurrentState;
std::atomic<uint32_t> mTransactionFlags{0};
- Vector<State> mPendingStates;
+ std::deque<State> mPendingStates;
// Timestamp history for UIAutomation. Thread safe.
FrameTracker mFrameTracker;