The Tor Browser: dom/plugins/ipc/hangui/MiniShmChild.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* vim: set ts=2 et sw=2 tw=80: */

     3 /* This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 #ifndef mozilla_plugins_MiniShmChild_h

     8 #define mozilla_plugins_MiniShmChild_h

    10 #include "MiniShmBase.h"

    12 #include <string>

    14 namespace mozilla {

    15 namespace plugins {

    17 /**

    18  * This class provides a lightweight shared memory interface for a child

    19  * process in Win32.

    20  * This code assumes that there is a parent-child relationship between

    21  * processes, as it inherits handles from the parent process.

    22  * Note that this class is *not* an IPDL actor.

    23  *

    24  * @see MiniShmParent

    25  */

    26 class MiniShmChild : public MiniShmBase

    27 {

    28 public:

    29   MiniShmChild();

    30   virtual ~MiniShmChild();

    32   /**

    33    * Initialize shared memory on the child side.

    34    *

    35    * @param aObserver A MiniShmObserver object to receive event notifications.

    36    * @param aCookie Cookie obtained from MiniShmParent::GetCookie

    37    * @param aTimeout Timeout in milliseconds.

    38    * @return nsresult error code

    39    */

    40   nsresult

    41   Init(MiniShmObserver* aObserver, const std::wstring& aCookie,

    42        const DWORD aTimeout);

    44   virtual nsresult

    45   Send() MOZ_OVERRIDE;

    47 protected:

    48   void

    49   OnEvent() MOZ_OVERRIDE;

    51 private:

    52   HANDLE mParentEvent;

    53   HANDLE mParentGuard;

    54   HANDLE mChildEvent;

    55   HANDLE mChildGuard;

    56   HANDLE mFileMapping;

    57   HANDLE mRegWait;

    58   LPVOID mView;

    59   DWORD  mTimeout;

    61   DISALLOW_COPY_AND_ASSIGN(MiniShmChild);

    62 };

    64 } // namespace plugins

    65 } // namespace mozilla

    67 #endif // mozilla_plugins_MiniShmChild_h

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