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69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=8 et :
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "base/message_loop.h"
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#include "chrome/common/child_process_info.h"
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#include "mozilla/ipc/Transport.h"
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using namespace base;
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using namespace std;
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namespace mozilla {
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namespace ipc {
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bool
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CreateTransport(ProcessHandle aProcOne, ProcessHandle /*unused*/,
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TransportDescriptor* aOne, TransportDescriptor* aTwo)
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{
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// This id is used to name the IPC pipe. The pointer passed to this
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// function isn't significant.
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wstring id = ChildProcessInfo::GenerateRandomChannelID(aOne);
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// Use MODE_SERVER to force creation of the pipe
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Transport t(id, Transport::MODE_SERVER, nullptr);
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HANDLE serverPipe = t.GetServerPipeHandle();
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if (!serverPipe) {
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return false;
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}
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// NB: we create the server pipe immediately, instead of just
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// grabbing an ID, on purpose. In the current setup, the client
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// needs to connect to an existing server pipe, so to prevent race
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// conditions, we create the server side here and then dup it to the
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// eventual server process.
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HANDLE serverDup;
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DWORD access = 0;
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DWORD options = DUPLICATE_SAME_ACCESS;
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if (!DuplicateHandle(GetCurrentProcess(), serverPipe, aProcOne,
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&serverDup,
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access,
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FALSE/*not inheritable*/,
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options)) {
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return false;
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}
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aOne->mPipeName = aTwo->mPipeName = id;
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aOne->mServerPipe = serverDup;
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aTwo->mServerPipe = 0;
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return true;
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}
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Transport*
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OpenDescriptor(const TransportDescriptor& aTd, Transport::Mode aMode)
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{
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return new Transport(aTd.mPipeName, aTd.mServerPipe, aMode, nullptr);
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}
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void
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CloseDescriptor(const TransportDescriptor& aTd)
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{
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CloseHandle(aTd.mServerPipe);
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}
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} // namespace ipc
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} // namespace mozilla
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