ProcessChild.h - mozsearch

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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_ipc_ProcessChild_h

#define mozilla_ipc_ProcessChild_h

#include "Endpoint.h"

#include "base/message_loop.h"

#include "base/process.h"

#include "mozilla/GeckoArgs.h"

#include "mozilla/ipc/IOThread.h"

// ProcessChild is the base class for all subprocesses of the main

// browser process.  Its code runs on the thread that started in

// main().

namespace mozilla {

namespace ipc {

class ProcessChild {

 protected:

  typedef base::ProcessId ProcessId;

 public:

  explicit ProcessChild(IPC::Channel::ChannelHandle aClientChannel,

                        ProcessId aParentPid, const nsID& aMessageChannelId);

  ProcessChild(const ProcessChild&) = delete;

  ProcessChild& operator=(const ProcessChild&) = delete;

  virtual ~ProcessChild();

  virtual bool Init(int aArgc, char* aArgv[]) = 0;

  static void AddPlatformBuildID(geckoargs::ChildProcessArgs& aExtraArgs);

  static bool InitPrefs(int aArgc, char* aArgv[]);

  virtual void CleanUp() {}

  static MessageLoop* message_loop() { return gProcessChild->mUILoop; }

  static void NotifiedImpendingShutdown();

  static bool ExpectingShutdown();

  static void AppendToIPCShutdownStateAnnotation(const nsCString& aStr) {

    StaticMutexAutoLock lock(gIPCShutdownStateLock);

    gIPCShutdownStateAnnotation.Append(" - "_ns);

    gIPCShutdownStateAnnotation.Append(aStr);

/**

   * Exit *now*.  Do not shut down XPCOM, do not pass Go, do not run

   * static destructors, do not collect $200.

*/

  static void QuickExit();

 protected:

  static ProcessChild* current() { return gProcessChild; }

  ProcessId ParentPid() { return mParentPid; }

  UntypedEndpoint TakeInitialEndpoint();

 private:

  static ProcessChild* gProcessChild;

  static StaticMutex gIPCShutdownStateLock;

  static nsCString gIPCShutdownStateAnnotation

      MOZ_GUARDED_BY(gIPCShutdownStateLock);

  MessageLoop* mUILoop;

  ProcessId mParentPid;

  nsID mMessageChannelId;

  UniquePtr<IOThreadChild> mChildThread;

};

}  // namespace ipc

}  // namespace mozilla

#endif  // ifndef mozilla_ipc_ProcessChild_h