| /* |
| * Copyright 2017 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrSemaphore_DEFINED |
| #define GrSemaphore_DEFINED |
| |
| #include "SkRefCnt.h" |
| |
| class GrBackendSemaphore; |
| class GrGpu; |
| |
| class GrSemaphore : public SkRefCnt { |
| private: |
| // This function should only be used in the case of exporting and importing a GrSemaphore object |
| // from one GrContext to another. When exporting, the GrSemaphore should be set to a null GrGpu, |
| // and when importing it should be set to the GrGpu of the current context. Once exported, a |
| // GrSemaphore should not be used with its old context. |
| void resetGpu(const GrGpu* gpu) { fGpu = gpu; } |
| |
| // The derived class will init the GrBackendSemaphore. This is used when flushing with signal |
| // semaphores so we can set the clients GrBackendSemaphore object after we've created the |
| // internal semaphore. |
| virtual void setBackendSemaphore(GrBackendSemaphore*) const = 0; |
| |
| protected: |
| explicit GrSemaphore(const GrGpu* gpu) : fGpu(gpu) {} |
| |
| friend class GrRenderTargetContext; // setBackendSemaphore |
| friend class GrResourceProvider; // resetGpu |
| |
| const GrGpu* fGpu; |
| }; |
| |
| #endif |