gecko-dev/ipc/mscom/MainThreadHandoff.h

72 строки
2.1 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 mozilla_mscom_MainThreadHandoff_h
#define mozilla_mscom_MainThreadHandoff_h
#include "mozilla/Assertions.h"
#include "mozilla/Move.h"
#include "mozilla/mscom/Interceptor.h"
#include "mozilla/mscom/MainThreadInvoker.h"
#include "mozilla/mscom/Utils.h"
#include "mozilla/Mutex.h"
#include "nsTArray.h"
namespace mozilla {
namespace mscom {
struct ArrayData;
class MainThreadHandoff final : public IInterceptorSink
, public ICallFrameWalker
{
public:
static HRESULT Create(IInterceptorSink** aOutput);
template <typename Interface>
static HRESULT WrapInterface(STAUniquePtr<Interface> aTargetInterface,
Interface** aOutInterface)
{
MOZ_ASSERT(!IsProxy(aTargetInterface.get()));
RefPtr<IInterceptorSink> handoff;
HRESULT hr = MainThreadHandoff::Create(getter_AddRefs(handoff));
if (FAILED(hr)) {
return hr;
}
return CreateInterceptor(Move(aTargetInterface), handoff, aOutInterface);
}
// IUnknown
STDMETHODIMP QueryInterface(REFIID riid, void** ppv) override;
STDMETHODIMP_(ULONG) AddRef() override;
STDMETHODIMP_(ULONG) Release() override;
// ICallFrameEvents
STDMETHODIMP OnCall(ICallFrame* aFrame) override;
// IInterceptorSink
STDMETHODIMP SetInterceptor(IWeakReference* aInterceptor) override;
// ICallFrameWalker
STDMETHODIMP OnWalkInterface(REFIID aIid, PVOID* aInterface, BOOL aIsInParam,
BOOL aIsOutParam) override;
private:
MainThreadHandoff();
~MainThreadHandoff();
HRESULT FixArrayElements(ICallFrame* aFrame,
const ArrayData& aArrayData);
private:
ULONG mRefCnt;
RefPtr<IWeakReference> mInterceptor;
};
} // namespace mscom
} // namespace mozilla
#endif // mozilla_mscom_MainThreadHandoff_h