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/* -*- 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 <utility>
#include "mozilla/Assertions.h"
#include "mozilla/Mutex.h"
#include "mozilla/mscom/Interceptor.h"
#include "mozilla/mscom/MainThreadInvoker.h"
#include "mozilla/mscom/Utils.h"
#include "nsTArray.h"
namespace mozilla {
namespace mscom {
// {9a907000-7829-47f1-80eb-f67a26f47b34}
DEFINE_GUID(IID_IMainThreadHandoff, 0x9a907000, 0x7829, 0x47f1, 0x80, 0xeb,
0xf6, 0x7a, 0x26, 0xf4, 0x7b, 0x34);
struct IMainThreadHandoff : public IInterceptorSink {
virtual STDMETHODIMP GetHandlerProvider(IHandlerProvider** aProvider) = 0;
};
struct ArrayData;
class MainThreadHandoff final : public IMainThreadHandoff,
public ICallFrameWalker {
public:
static HRESULT Create(IHandlerProvider* aHandlerProvider,
IInterceptorSink** aOutput);
template <typename Interface>
static HRESULT WrapInterface(STAUniquePtr<Interface> aTargetInterface,
Interface** aOutInterface) {
return WrapInterface<Interface>(std::move(aTargetInterface), nullptr,
aOutInterface);
}
template <typename Interface>
static HRESULT WrapInterface(STAUniquePtr<Interface> aTargetInterface,
IHandlerProvider* aHandlerProvider,
Interface** aOutInterface) {
MOZ_ASSERT(!IsProxy(aTargetInterface.get()));
RefPtr<IInterceptorSink> handoff;
HRESULT hr =
MainThreadHandoff::Create(aHandlerProvider, getter_AddRefs(handoff));
if (FAILED(hr)) {
return hr;
}
return CreateInterceptor(std::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;
STDMETHODIMP GetHandler(NotNull<CLSID*> aHandlerClsid) override;
STDMETHODIMP GetHandlerPayloadSize(NotNull<IInterceptor*> aInterceptor,
NotNull<DWORD*> aOutPayloadSize) override;
STDMETHODIMP WriteHandlerPayload(NotNull<IInterceptor*> aInterceptor,
NotNull<IStream*> aStream) override;
STDMETHODIMP_(REFIID) MarshalAs(REFIID aIid) override;
STDMETHODIMP DisconnectHandlerRemotes() override;
STDMETHODIMP IsInterfaceMaybeSupported(REFIID aIid) override;
// IMainThreadHandoff
STDMETHODIMP GetHandlerProvider(IHandlerProvider** aProvider) override {
RefPtr<IHandlerProvider> provider = mHandlerProvider;
provider.forget(aProvider);
return mHandlerProvider ? S_OK : S_FALSE;
}
// ICallFrameWalker
STDMETHODIMP OnWalkInterface(REFIID aIid, PVOID* aInterface, BOOL aIsInParam,
BOOL aIsOutParam) override;
private:
explicit MainThreadHandoff(IHandlerProvider* aHandlerProvider);
~MainThreadHandoff();
HRESULT FixArrayElements(ICallFrame* aFrame, const ArrayData& aArrayData);
HRESULT FixIServiceProvider(ICallFrame* aFrame);
private:
ULONG mRefCnt;
RefPtr<IWeakReference> mInterceptor;
RefPtr<IHandlerProvider> mHandlerProvider;
};
} // namespace mscom
} // namespace mozilla
#endif // mozilla_mscom_MainThreadHandoff_h
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