mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-08 04:27:37 +00:00
91 lines
3.8 KiB
C++
91 lines
3.8 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef THREADSAFEREFCOUNTINGWITHMAINTHREADDESTRUCTION_H_
|
|
#define THREADSAFEREFCOUNTINGWITHMAINTHREADDESTRUCTION_H_
|
|
|
|
#include "MainThreadUtils.h"
|
|
#include "nsThreadUtils.h"
|
|
|
|
namespace mozilla {
|
|
namespace layers {
|
|
|
|
inline MessageLoop* GetMainLoopAssertingMainThread()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
return MessageLoop::current();
|
|
}
|
|
|
|
inline MessageLoop* GetMainLoop()
|
|
{
|
|
static MessageLoop* sMainLoop = GetMainLoopAssertingMainThread();
|
|
return sMainLoop;
|
|
}
|
|
|
|
struct HelperForMainThreadDestruction
|
|
{
|
|
HelperForMainThreadDestruction()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
GetMainLoop();
|
|
}
|
|
|
|
~HelperForMainThreadDestruction()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
}
|
|
};
|
|
|
|
template<typename T>
|
|
struct DeleteOnMainThreadTask: public nsRunnable
|
|
{
|
|
T* mToDelete;
|
|
explicit DeleteOnMainThreadTask(T* aToDelete) : mToDelete(aToDelete) {}
|
|
NS_IMETHOD Run() {
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
mToDelete->DeleteToBeCalledOnMainThread();
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
} // namespace layers
|
|
} // namespace mozilla
|
|
|
|
#define NS_INLINE_DECL_THREADSAFE_REFCOUNTING_WITH_MAIN_THREAD_DESTRUCTION(_class) \
|
|
public: \
|
|
NS_METHOD_(MozExternalRefCountType) AddRef(void) { \
|
|
MOZ_ASSERT_TYPE_OK_FOR_REFCOUNTING(_class) \
|
|
MOZ_ASSERT(int32_t(mRefCnt) >= 0, "illegal refcnt"); \
|
|
nsrefcnt count = ++mRefCnt; \
|
|
NS_LOG_ADDREF(this, count, #_class, sizeof(*this)); \
|
|
return (nsrefcnt) count; \
|
|
} \
|
|
void DeleteToBeCalledOnMainThread() { \
|
|
MOZ_ASSERT(NS_IsMainThread()); \
|
|
NS_LOG_RELEASE(this, 0, #_class); \
|
|
delete this; \
|
|
} \
|
|
NS_METHOD_(MozExternalRefCountType) Release(void) { \
|
|
MOZ_ASSERT(int32_t(mRefCnt) > 0, "dup release"); \
|
|
nsrefcnt count = --mRefCnt; \
|
|
if (count == 0) { \
|
|
if (NS_IsMainThread()) { \
|
|
DeleteToBeCalledOnMainThread(); \
|
|
} else { \
|
|
NS_DispatchToMainThread( \
|
|
new mozilla::layers::DeleteOnMainThreadTask<_class>(this)); \
|
|
} \
|
|
} else { \
|
|
NS_LOG_RELEASE(this, count, #_class); \
|
|
} \
|
|
return count; \
|
|
} \
|
|
protected: \
|
|
::mozilla::ThreadSafeAutoRefCnt mRefCnt; \
|
|
private: \
|
|
::mozilla::layers::HelperForMainThreadDestruction mHelperForMainThreadDestruction; \
|
|
public:
|
|
|
|
#endif
|