pjs/ipc/glue/Transport_win.cpp

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/* -*- 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
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#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 {
bool
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;
DWORD options = DUPLICATE_SAME_ACCESS;
if (!DuplicateHandle(GetCurrentProcess(), serverPipe, aProcOne,
&serverDup,
access,
FALSE/*not inheritable*/,
options)) {
return false;
}
aOne->mPipeName = aTwo->mPipeName = id;
aOne->mServerPipe = serverDup;
aTwo->mServerPipe = 0;
return true;
}
Transport*
OpenDescriptor(const TransportDescriptor& aTd, Transport::Mode aMode)
{
return new Transport(aTd.mPipeName, aTd.mServerPipe, aMode, nsnull);
}
void
CloseDescriptor(const TransportDescriptor& aTd)
{
CloseHandle(aTd.mServerPipe);
}
} // namespace ipc
} // namespace mozilla