1 /* 2 * Copyright 2023 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <cstdint> 20 #include <deque> 21 #include <mutex> 22 23 #include <ui/Fence.h> 24 25 namespace android::gui { 26 27 class FenceMonitor { 28 public: 29 explicit FenceMonitor(const char* name); 30 void queueFence(const sp<Fence>& fence); 31 32 private: 33 void loop(); 34 void threadLoop(); 35 36 const char* mName; 37 uint32_t mFencesQueued; 38 uint32_t mFencesSignaled; 39 std::deque<sp<Fence>> mQueue; 40 std::condition_variable mCondition; 41 std::mutex mMutex; 42 }; 43 44 } // namespace android::gui