89     HdiGrallocBuffer *buffer = nullptr;  in GetFrontBuffer()  local
91         buffer = mFrontBuffers.front().get();  in GetFrontBuffer()
93     return buffer;  in GetFrontBuffer()
98     HdiGrallocBuffer *buffer = nullptr;  in GetBackBuffer()  local
100         buffer = mBackBuffers.front().get();  in GetBackBuffer()
102     return buffer;  in GetBackBuffer()
115         std::unique_ptr<HdiGrallocBuffer> buffer =  in Init()  local
117         DISPLAY_TEST_CHK_RETURN((buffer->Get() == nullptr), DISPLAY_FAILURE,  in Init()
119         mFrontBuffers.emplace(std::move(buffer));  in Init()
176     HdiGrallocBuffer *buffer = AcquireBackBuffer();  in PreparePresent()  local
177 …DISPLAY_TEST_CHK_RETURN((buffer == nullptr), DISPLAY_FAILURE, DISPLAY_TEST_LOGE("can not get back …  in PreparePresent()
179     BufferHandle *handle = buffer->Get();  in PreparePresent()