Introduce release buffer callback for BufferStateLayer
Currently BLAST clients use the TransactionCompleted callbacks to
determine when to release buffers. The TransactionCompleted callback
is overloaded. For transactions without buffers, the callback is
called when the transaction is applied on the server. If the
Transaction contains one or more buffers, the callback is called when
all the buffers are latched and ready to be presented. If we have
multiple buffers on multiple transactions, where one or more buffers
maybe dropped, the pending callbacks are called together. This may
delay signaling the client when a buffer can be released.
To fix this, we introduce a new buffer release callback that is
called as soon as a buffer is dropped by the server or when a new
buffer has been latched and the buffer will no longer be presented.
This new callback provides a graphic bufferid to identify the buffer
that can be released and a release fence to wait on.
BlastBufferQueue has been switched to use this new callback. Other
BLAST users continue to use the existing callback.
Test: go/wm-smoke
Test: atest ReleaseBufferCallbackTest
Bug: 178385281
Change-Id: Idd88e4994e543443198a5a8cfa0e3f5f67d5d482
diff --git a/libs/gui/tests/BLASTBufferQueue_test.cpp b/libs/gui/tests/BLASTBufferQueue_test.cpp
index 7895e99..fe48d88 100644
--- a/libs/gui/tests/BLASTBufferQueue_test.cpp
+++ b/libs/gui/tests/BLASTBufferQueue_test.cpp
@@ -73,13 +73,34 @@
void waitForCallbacks() {
std::unique_lock lock{mBlastBufferQueueAdapter->mMutex};
- while (mBlastBufferQueueAdapter->mSubmitted.size() > 0) {
+ // Wait until all but one of the submitted buffers have been released.
+ while (mBlastBufferQueueAdapter->mSubmitted.size() > 1) {
mBlastBufferQueueAdapter->mCallbackCV.wait(lock);
}
}
+ void setTransactionCompleteCallback(int64_t frameNumber) {
+ mBlastBufferQueueAdapter->setTransactionCompleteCallback(frameNumber, [&](int64_t frame) {
+ std::unique_lock lock{mMutex};
+ mLastTransactionCompleteFrameNumber = frame;
+ mCallbackCV.notify_all();
+ });
+ }
+
+ void waitForCallback(int64_t frameNumber) {
+ std::unique_lock lock{mMutex};
+ // Wait until all but one of the submitted buffers have been released.
+ while (mLastTransactionCompleteFrameNumber < frameNumber) {
+ mCallbackCV.wait(lock);
+ }
+ }
+
private:
sp<BLASTBufferQueue> mBlastBufferQueueAdapter;
+
+ std::mutex mMutex;
+ std::condition_variable mCallbackCV;
+ int64_t mLastTransactionCompleteFrameNumber = -1;
};
class BLASTBufferQueueTest : public ::testing::Test {
@@ -128,7 +149,7 @@
mCaptureArgs.dataspace = ui::Dataspace::V0_SRGB;
}
- void setUpProducer(BLASTBufferQueueHelper adapter, sp<IGraphicBufferProducer>& producer) {
+ void setUpProducer(BLASTBufferQueueHelper& adapter, sp<IGraphicBufferProducer>& producer) {
producer = adapter.getIGraphicBufferProducer();
setUpProducer(producer);
}
@@ -205,10 +226,10 @@
EXPECT_GE(epsilon, abs(g - *(pixel + 1)));
EXPECT_GE(epsilon, abs(b - *(pixel + 2)));
}
+ ASSERT_EQ(false, ::testing::Test::HasFailure());
}
}
captureBuf->unlock();
- ASSERT_EQ(false, ::testing::Test::HasFailure());
}
static status_t captureDisplay(DisplayCaptureArgs& captureArgs,
@@ -315,7 +336,8 @@
nsecs_t desiredPresentTime = systemTime() + nsecs_t(5 * 1e8);
IGraphicBufferProducer::QueueBufferOutput qbOutput;
- IGraphicBufferProducer::QueueBufferInput input(desiredPresentTime, false, HAL_DATASPACE_UNKNOWN,
+ IGraphicBufferProducer::QueueBufferInput input(desiredPresentTime, true /* autotimestamp */,
+ HAL_DATASPACE_UNKNOWN,
Rect(mDisplayWidth, mDisplayHeight),
NATIVE_WINDOW_SCALING_MODE_FREEZE, 0,
Fence::NO_FENCE);
@@ -351,7 +373,8 @@
buf->unlock();
IGraphicBufferProducer::QueueBufferOutput qbOutput;
- IGraphicBufferProducer::QueueBufferInput input(systemTime(), false, HAL_DATASPACE_UNKNOWN,
+ IGraphicBufferProducer::QueueBufferInput input(systemTime(), true /* autotimestamp */,
+ HAL_DATASPACE_UNKNOWN,
Rect(mDisplayWidth, mDisplayHeight),
NATIVE_WINDOW_SCALING_MODE_FREEZE, 0,
Fence::NO_FENCE);
@@ -396,7 +419,8 @@
nullptr, nullptr);
ASSERT_EQ(NO_ERROR, ret);
IGraphicBufferProducer::QueueBufferOutput qbOutput;
- IGraphicBufferProducer::QueueBufferInput input(systemTime(), false, HAL_DATASPACE_UNKNOWN,
+ IGraphicBufferProducer::QueueBufferInput input(systemTime(), true /* autotimestamp */,
+ HAL_DATASPACE_UNKNOWN,
Rect(mDisplayWidth, mDisplayHeight),
NATIVE_WINDOW_SCALING_MODE_FREEZE, 0,
Fence::NO_FENCE);
@@ -429,7 +453,8 @@
buf->unlock();
IGraphicBufferProducer::QueueBufferOutput qbOutput;
- IGraphicBufferProducer::QueueBufferInput input(systemTime(), false, HAL_DATASPACE_UNKNOWN,
+ IGraphicBufferProducer::QueueBufferInput input(systemTime(), true /* autotimestamp */,
+ HAL_DATASPACE_UNKNOWN,
Rect(mDisplayWidth, mDisplayHeight / 2),
NATIVE_WINDOW_SCALING_MODE_FREEZE, 0,
Fence::NO_FENCE);
@@ -486,7 +511,8 @@
buf->unlock();
IGraphicBufferProducer::QueueBufferOutput qbOutput;
- IGraphicBufferProducer::QueueBufferInput input(systemTime(), false, HAL_DATASPACE_UNKNOWN,
+ IGraphicBufferProducer::QueueBufferInput input(systemTime(), true /* autotimestamp */,
+ HAL_DATASPACE_UNKNOWN,
Rect(bufferSideLength, finalCropSideLength),
NATIVE_WINDOW_SCALING_MODE_SCALE_CROP, 0,
Fence::NO_FENCE);
@@ -537,7 +563,8 @@
ASSERT_EQ(IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION, ret);
ASSERT_EQ(OK, igbProducer->requestBuffer(slot, &buf));
IGraphicBufferProducer::QueueBufferOutput qbOutput;
- IGraphicBufferProducer::QueueBufferInput input(systemTime(), false, HAL_DATASPACE_UNKNOWN,
+ IGraphicBufferProducer::QueueBufferInput input(systemTime(), true /* autotimestamp */,
+ HAL_DATASPACE_UNKNOWN,
Rect(mDisplayWidth, mDisplayHeight),
NATIVE_WINDOW_SCALING_MODE_FREEZE, 0,
Fence::NO_FENCE);
@@ -577,7 +604,7 @@
sp<IGraphicBufferProducer> slowIgbProducer;
setUpProducer(slowAdapter, slowIgbProducer);
nsecs_t presentTimeDelay = std::chrono::nanoseconds(500ms).count();
- queueBuffer(slowIgbProducer, 0 /* r */, 0 /* g */, 0 /* b */, presentTimeDelay);
+ queueBuffer(slowIgbProducer, 0 /* r */, 255 /* g */, 0 /* b */, presentTimeDelay);
BLASTBufferQueueHelper fastAdapter(bgSurface, mDisplayWidth, mDisplayHeight);
sp<IGraphicBufferProducer> fastIgbProducer;
@@ -617,7 +644,8 @@
fillQuadrants(buf);
IGraphicBufferProducer::QueueBufferOutput qbOutput;
- IGraphicBufferProducer::QueueBufferInput input(systemTime(), false, HAL_DATASPACE_UNKNOWN,
+ IGraphicBufferProducer::QueueBufferInput input(systemTime(), true /* autotimestamp */,
+ HAL_DATASPACE_UNKNOWN,
Rect(bufWidth, bufHeight),
NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW,
tr, Fence::NO_FENCE);
@@ -838,6 +866,7 @@
IGraphicBufferProducer::QueueBufferOutput qbOutput;
nsecs_t requestedPresentTimeA = 0;
nsecs_t postedTimeA = 0;
+ adapter.setTransactionCompleteCallback(1);
setUpAndQueueBuffer(igbProducer, &requestedPresentTimeA, &postedTimeA, &qbOutput, true);
history.applyDelta(qbOutput.frameTimestamps);
@@ -848,7 +877,7 @@
ASSERT_EQ(requestedPresentTimeA, events->requestedPresentTime);
ASSERT_GE(events->postedTime, postedTimeA);
- adapter.waitForCallbacks();
+ adapter.waitForCallback(1);
// queue another buffer so we query for frame event deltas
nsecs_t requestedPresentTimeB = 0;