| // Copyright 2021 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef GPU_COMMAND_BUFFER_SERVICE_REF_COUNTED_LOCK_H_ |
| #define GPU_COMMAND_BUFFER_SERVICE_REF_COUNTED_LOCK_H_ |
| |
| #include "base/memory/ref_counted.h" |
| #include "base/synchronization/lock.h" |
| #include "gpu/gpu_gles2_export.h" |
| |
| namespace gpu { |
| |
| // Ref counted wrapper for base::Lock. |
| class GPU_GLES2_EXPORT RefCountedLock |
| : public base::RefCountedThreadSafe<RefCountedLock> { |
| public: |
| RefCountedLock() = default; |
| |
| // Disallow copy and assign. |
| RefCountedLock(const RefCountedLock&) = delete; |
| RefCountedLock& operator=(const RefCountedLock&) = delete; |
| |
| base::Lock* GetDrDcLockPtr() { return &lock_; } |
| void AssertAcquired() { lock_.AssertAcquired(); } |
| |
| private: |
| friend class base::RefCountedThreadSafe<RefCountedLock>; |
| ~RefCountedLock() = default; |
| |
| base::Lock lock_; |
| }; |
| |
| // Helper class for handling RefCountedLock for drdc usage. |
| class GPU_GLES2_EXPORT RefCountedLockHelperDrDc { |
| public: |
| explicit RefCountedLockHelperDrDc(scoped_refptr<RefCountedLock> lock); |
| ~RefCountedLockHelperDrDc(); |
| |
| base::Lock* GetDrDcLockPtr() const { |
| return lock_ ? lock_->GetDrDcLockPtr() : nullptr; |
| } |
| |
| const scoped_refptr<RefCountedLock>& GetDrDcLock() { return lock_; } |
| |
| void AssertAcquiredDrDcLock() const { |
| if (lock_) |
| lock_->AssertAcquired(); |
| } |
| |
| std::unique_ptr<base::AutoLockMaybe> GetScopedDrDcLock() const { |
| return std::make_unique<base::AutoLockMaybe>(GetDrDcLockPtr()); |
| } |
| |
| private: |
| mutable scoped_refptr<RefCountedLock> lock_; |
| }; |
| |
| } // namespace gpu |
| |
| #endif // GPU_COMMAND_BUFFER_SERVICE_REF_COUNTED_LOCK_H_ |