author Kan-Ru Chen <kanru@kanru.info>
Wed, 07 Mar 2012 12:03:25 +0100
changeset 91318 72bc6f12d1cc5237b7347f2ed737e929def0ad07
parent 71051 d11b3f7ed46aa0ca0ba48afde08ab2e8a14a7c21
child 98529 f4157e8c410708d76703f19e4dfb61859bfe32d8
permissions -rw-r--r--
Bug 697132 - Implement wakelock interfaces. r=jlebar

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: sw=2 ts=8 et :
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at:
 * http://www.mozilla.org/MPL/
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 * The Original Code is Mozilla Code.
 * The Initial Developer of the Original Code is
 *   The Mozilla Foundation
 * Portions created by the Initial Developer are Copyright (C) 2010
 * the Initial Developer. All Rights Reserved.
 * Contributor(s):
 *   Chris Jones <jones.chris.g@gmail.com>
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 * ***** END LICENSE BLOCK ***** */

#include "base/message_loop.h"
#include "chrome/common/child_process_info.h"

#include "mozilla/ipc/Transport.h"

using namespace base;
using namespace std;

namespace mozilla {
namespace ipc {

CreateTransport(ProcessHandle aProcOne, ProcessHandle /*unused*/,
                TransportDescriptor* aOne, TransportDescriptor* aTwo)
  // This id is used to name the IPC pipe.  The pointer passed to this
  // function isn't significant.
  wstring id = ChildProcessInfo::GenerateRandomChannelID(aOne);
  // Use MODE_SERVER to force creation of the pipe
  Transport t(id, Transport::MODE_SERVER, nsnull);
  HANDLE serverPipe = t.GetServerPipeHandle();
  if (!serverPipe) {
    return false;

  // NB: we create the server pipe immediately, instead of just
  // grabbing an ID, on purpose.  In the current setup, the client
  // needs to connect to an existing server pipe, so to prevent race
  // conditions, we create the server side here and then dup it to the
  // eventual server process.
  HANDLE serverDup;
  DWORD access = 0;
  if (!DuplicateHandle(GetCurrentProcess(), serverPipe, aProcOne,
                       FALSE/*not inheritable*/,
                       options)) {
    return false;

  aOne->mPipeName = aTwo->mPipeName = id;
  aOne->mServerPipe = serverDup;
  aTwo->mServerPipe = 0;
  return true;

OpenDescriptor(const TransportDescriptor& aTd, Transport::Mode aMode)
  return new Transport(aTd.mPipeName, aTd.mServerPipe, aMode, nsnull);

CloseDescriptor(const TransportDescriptor& aTd)

} // namespace ipc
} // namespace mozilla