| // Copyright (c) 2012 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 PPAPI_PROXY_PROXY_COMPLETION_CALLBACK_FACTORY_H_ |
| #define PPAPI_PROXY_PROXY_COMPLETION_CALLBACK_FACTORY_H_ |
| |
| #include <stdint.h> |
| |
| #include "base/logging.h" |
| #include "base/sequence_checker.h" |
| #include "ppapi/cpp/completion_callback.h" |
| #include "ppapi/utility/completion_callback_factory.h" |
| |
| namespace ppapi { |
| namespace proxy { |
| |
| // This class is just like pp::NonThreadSafeThreadTraits but rather than using |
| // pp::Module::core (which doesn't exist), it uses Chrome threads which do. |
| class ProxyNonThreadSafeThreadTraits { |
| public: |
| class RefCount { |
| public: |
| RefCount() : ref_(0) {} |
| |
| ~RefCount() { |
| DCHECK(sequence_checker_.CalledOnValidSequence()); |
| } |
| |
| int32_t AddRef() { |
| DCHECK(sequence_checker_.CalledOnValidSequence()); |
| return ++ref_; |
| } |
| |
| int32_t Release() { |
| DCHECK(sequence_checker_.CalledOnValidSequence()); |
| DCHECK(ref_ > 0); |
| return --ref_; |
| } |
| |
| private: |
| int32_t ref_; |
| base::SequenceChecker sequence_checker_; |
| }; |
| |
| // No-op lock class. |
| class Lock { |
| public: |
| Lock() {} |
| ~Lock() {} |
| |
| void Acquire() {} |
| void Release() {} |
| }; |
| |
| // No-op AutoLock class. |
| class AutoLock { |
| public: |
| explicit AutoLock(Lock&) {} |
| ~AutoLock() {} |
| }; |
| }; |
| |
| template<typename T> |
| class ProxyCompletionCallbackFactory |
| : public pp::CompletionCallbackFactory<T, ProxyNonThreadSafeThreadTraits> { |
| public: |
| ProxyCompletionCallbackFactory() |
| : pp::CompletionCallbackFactory<T, ProxyNonThreadSafeThreadTraits>() {} |
| ProxyCompletionCallbackFactory(T* t) |
| : pp::CompletionCallbackFactory<T, ProxyNonThreadSafeThreadTraits>(t) {} |
| }; |
| |
| } // namespace proxy |
| } // namespace ppapi |
| |
| #endif // PPAPI_PROXY_PROXY_COMPLETION_CALLBACK_FACTORY_H_ |