diff options
Diffstat (limited to 'libs/ui/BufferHubBuffer.cpp')
-rw-r--r-- | libs/ui/BufferHubBuffer.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/libs/ui/BufferHubBuffer.cpp b/libs/ui/BufferHubBuffer.cpp index 226b6ee9ad..0582e1afe7 100644 --- a/libs/ui/BufferHubBuffer.cpp +++ b/libs/ui/BufferHubBuffer.cpp @@ -169,6 +169,13 @@ int BufferHubBuffer::ImportGraphicBuffer() { buffer_state_ = &metadata_header->buffer_state; fence_state_ = &metadata_header->fence_state; active_clients_bit_mask_ = &metadata_header->active_clients_bit_mask; + // The C++ standard recommends (but does not require) that lock-free atomic operations are + // also address-free, that is, suitable for communication between processes using shared + // memory. + LOG_ALWAYS_FATAL_IF(!std::atomic_is_lock_free(buffer_state_) || + !std::atomic_is_lock_free(fence_state_) || + !std::atomic_is_lock_free(active_clients_bit_mask_), + "Atomic variables in ashmen are not lock free."); // Import the buffer: We only need to hold on the native_handle_t here so that // GraphicBuffer instance can be created in future. |