1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 // Sync.hpp: Defines sync objects for the EGL_KHR_fence_sync extension. 16 17 #ifndef LIBEGL_SYNC_H_ 18 #define LIBEGL_SYNC_H_ 19 20 #include "Context.hpp" 21 22 #include <EGL/eglext.h> 23 24 namespace egl 25 { 26 27 class FenceSync 28 { 29 public: 30 explicit FenceSync(Context *context) : context(context) 31 { 32 status = EGL_UNSIGNALED_KHR; 33 context->addRef(); 34 } 35 36 ~FenceSync() 37 { 38 context->release(); 39 context = nullptr; 40 } 41 42 void wait() { context->finish(); signal(); } 43 void signal() { status = EGL_SIGNALED_KHR; } 44 bool isSignaled() const { return status == EGL_SIGNALED_KHR; } 45 46 private: 47 EGLint status; 48 Context *context; 49 }; 50 51 } 52 53 #endif // LIBEGL_SYNC_H_ 54
