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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=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_plugins_MiniShmChild_h
#define mozilla_plugins_MiniShmChild_h
#include "MiniShmBase.h"
#include <string>
namespace mozilla {
namespace plugins {
/**
* This class provides a lightweight shared memory interface for a child
* process in Win32.
* This code assumes that there is a parent-child relationship between
* processes, as it inherits handles from the parent process.
* Note that this class is *not* an IPDL actor.
*
* @see MiniShmParent
*/
class MiniShmChild : public MiniShmBase
{
public:
MiniShmChild();
virtual ~MiniShmChild();
/**
* Initialize shared memory on the child side.
*
* @param aObserver A MiniShmObserver object to receive event notifications.
* @param aCookie Cookie obtained from MiniShmParent::GetCookie
* @param aTimeout Timeout in milliseconds.
* @return nsresult error code
*/
nsresult
Init(MiniShmObserver* aObserver, const std::wstring& aCookie,
const DWORD aTimeout);
virtual nsresult
Send() override;
protected:
void
OnEvent() override;
private:
HANDLE mParentEvent;
HANDLE mParentGuard;
HANDLE mChildEvent;
HANDLE mChildGuard;
HANDLE mFileMapping;
HANDLE mRegWait;
LPVOID mView;
DWORD mTimeout;
DISALLOW_COPY_AND_ASSIGN(MiniShmChild);
};
} // namespace plugins
} // namespace mozilla
#endif // mozilla_plugins_MiniShmChild_h
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