BufferQueueProducer: Call onBuffersReleased() in detachNextBuffer
Like detachBuffer(), detachNextBuffer() needs to inform the consumer,
who generally has a cache of buffer items, that a buffer is no longer
owned by the buffer queue.
Otherwise the consumer layer can leak the buffer reference until
consumer teardown/disconnect.
Test: Camera CTS is fine, using a camera app shows correct memory
behavior
Bug: 62591036
Change-Id: I14c200d13e60dbbe21261343941f84fb786db117
diff --git a/libs/gui/BufferQueueProducer.cpp b/libs/gui/BufferQueueProducer.cpp
index 3d57769..8385864 100644
--- a/libs/gui/BufferQueueProducer.cpp
+++ b/libs/gui/BufferQueueProducer.cpp
@@ -632,41 +632,49 @@
return BAD_VALUE;
}
- Mutex::Autolock lock(mCore->mMutex);
+ sp<IConsumerListener> listener;
+ {
+ Mutex::Autolock lock(mCore->mMutex);
- if (mCore->mIsAbandoned) {
- BQ_LOGE("detachNextBuffer: BufferQueue has been abandoned");
- return NO_INIT;
+ if (mCore->mIsAbandoned) {
+ BQ_LOGE("detachNextBuffer: BufferQueue has been abandoned");
+ return NO_INIT;
+ }
+
+ if (mCore->mConnectedApi == BufferQueueCore::NO_CONNECTED_API) {
+ BQ_LOGE("detachNextBuffer: BufferQueue has no connected producer");
+ return NO_INIT;
+ }
+
+ if (mCore->mSharedBufferMode) {
+ BQ_LOGE("detachNextBuffer: cannot detach a buffer in shared buffer "
+ "mode");
+ return BAD_VALUE;
+ }
+
+ mCore->waitWhileAllocatingLocked();
+
+ if (mCore->mFreeBuffers.empty()) {
+ return NO_MEMORY;
+ }
+
+ int found = mCore->mFreeBuffers.front();
+ mCore->mFreeBuffers.remove(found);
+ mCore->mFreeSlots.insert(found);
+
+ BQ_LOGV("detachNextBuffer detached slot %d", found);
+
+ *outBuffer = mSlots[found].mGraphicBuffer;
+ *outFence = mSlots[found].mFence;
+ mCore->clearBufferSlotLocked(found);
+ VALIDATE_CONSISTENCY();
+ listener = mCore->mConsumerListener;
}
- if (mCore->mConnectedApi == BufferQueueCore::NO_CONNECTED_API) {
- BQ_LOGE("detachNextBuffer: BufferQueue has no connected producer");
- return NO_INIT;
+ if (listener != NULL) {
+ listener->onBuffersReleased();
}
- if (mCore->mSharedBufferMode) {
- BQ_LOGE("detachNextBuffer: cannot detach a buffer in shared buffer "
- "mode");
- return BAD_VALUE;
- }
-
- mCore->waitWhileAllocatingLocked();
-
- if (mCore->mFreeBuffers.empty()) {
- return NO_MEMORY;
- }
-
- int found = mCore->mFreeBuffers.front();
- mCore->mFreeBuffers.remove(found);
- mCore->mFreeSlots.insert(found);
-
- BQ_LOGV("detachNextBuffer detached slot %d", found);
-
- *outBuffer = mSlots[found].mGraphicBuffer;
- *outFence = mSlots[found].mFence;
- mCore->clearBufferSlotLocked(found);
- VALIDATE_CONSISTENCY();
-
return NO_ERROR;
}