464     VulkanSurface::NativeBufferInfo& currentBuffer = *mCurrentBufferInfo;  in presentCurrentBuffer()  local
466     int queuedFd = (semaphoreFd != -1) ? semaphoreFd : currentBuffer.dequeue_fence.release();  in presentCurrentBuffer()
467     int err = mNativeWindow->queueBuffer(mNativeWindow.get(), currentBuffer.buffer.get(), queuedFd);  in presentCurrentBuffer()
469     currentBuffer.dequeued = false;  in presentCurrentBuffer()
473         mNativeWindow->cancelBuffer(mNativeWindow.get(), currentBuffer.buffer.get(),  in presentCurrentBuffer()
474                                     currentBuffer.dequeue_fence.release());  in presentCurrentBuffer()
476         currentBuffer.hasValidContents = true;  in presentCurrentBuffer()
477         currentBuffer.lastPresentedCount = mPresentCount;  in presentCurrentBuffer()
481     currentBuffer.dequeue_fence.reset();  in presentCurrentBuffer()
488     VulkanSurface::NativeBufferInfo& currentBuffer = *mCurrentBufferInfo;  in getCurrentBuffersAge()  local
489     return currentBuffer.hasValidContents ? (mPresentCount - currentBuffer.lastPresentedCount) : 0;  in getCurrentBuffersAge()