status_t GonkConsumerBase::addReleaseFenceLocked(int slot,
const sp<GraphicBuffer> graphicBuffer, const sp<Fence>& fence) {
CB_LOGV("addReleaseFenceLocked: slot=%d", slot);
// If consumer no longer tracks this graphicBuffer, we can safely
// drop this fence, as it will never be received by the producer.
if (!stillTracking(slot, graphicBuffer)) {
return OK;
}
if (!mSlots[slot].mFence.get()) {
mSlots[slot].mFence = fence;
} else {
sp<Fence> mergedFence = Fence::merge(
String8::format("%.28s:%d", mName.string(), slot),
mSlots[slot].mFence, fence);
if (!mergedFence.get()) {
CB_LOGE("failed to merge release fences");
// synchronization is broken, the best we can do is hope fences
// signal in order so the new fence will act like a union
mSlots[slot].mFence = fence;
return BAD_VALUE;
}
mSlots[slot].mFence = mergedFence;
}
return OK;
}
status_t ConsumerBase::detachBuffer(int slot) {
CB_LOGV("detachBuffer");
Mutex::Autolock lock(mMutex);
status_t result = mConsumer->detachBuffer(slot);
if (result != NO_ERROR) {
CB_LOGE("Failed to detach buffer: %d", result);
return result;
}
freeBufferLocked(slot);
return result;
}
status_t ConsumerBase::addReleaseFenceLocked(int slot, const sp<Fence>& fence) {
CB_LOGV("addReleaseFenceLocked: slot=%d", slot);
if (!mSlots[slot].mFence.get()) {
mSlots[slot].mFence = fence;
} else {
sp<Fence> mergedFence = Fence::merge(
String8::format("%.28s:%d", mName.string(), slot),
mSlots[slot].mFence, fence);
if (!mergedFence.get()) {
CB_LOGE("failed to merge release fences");
// synchronization is broken, the best we can do is hope fences
// signal in order so the new fence will act like a union
mSlots[slot].mFence = fence;
return BAD_VALUE;
}
mSlots[slot].mFence = mergedFence;
}
return OK;
}
GonkConsumerBase::GonkConsumerBase(const sp<GonkBufferQueue>& bufferQueue, bool controlledByApp) :
mAbandoned(false),
mConsumer(bufferQueue) {
// Choose a name using the PID and a process-unique ID.
mName = String8::format("unnamed-%d-%d", getpid(), createProcessUniqueId());
// Note that we can't create an sp<...>(this) in a ctor that will not keep a
// reference once the ctor ends, as that would cause the refcount of 'this'
// dropping to 0 at the end of the ctor. Since all we need is a wp<...>
// that's what we create.
wp<ConsumerListener> listener = static_cast<ConsumerListener*>(this);
sp<IConsumerListener> proxy = new GonkBufferQueue::ProxyConsumerListener(listener);
status_t err = mConsumer->consumerConnect(proxy, controlledByApp);
if (err != NO_ERROR) {
CB_LOGE("GonkConsumerBase: error connecting to GonkBufferQueue: %s (%d)",
strerror(-err), err);
} else {
mConsumer->setConsumerName(mName);
}
}