mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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294 lines
8.9 KiB
C++
294 lines
8.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*/
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla IPC.
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*
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* The Initial Developer of the Original Code is
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* Ben Turner <bent.mozilla@gmail.com>.
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* Portions created by the Initial Developer are Copyright (C) 2009
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "GeckoChildProcessHost.h"
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#include "base/command_line.h"
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#include "base/path_service.h"
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#include "base/string_util.h"
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#include "chrome/common/chrome_switches.h"
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#include "chrome/common/process_watcher.h"
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#include "prprf.h"
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#if defined(OS_LINUX)
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# define XP_LINUX 1
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#endif
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#include "nsExceptionHandler.h"
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#include "mozilla/ipc/BrowserProcessSubThread.h"
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using mozilla::MonitorAutoEnter;
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using mozilla::ipc::GeckoChildProcessHost;
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template<>
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struct RunnableMethodTraits<GeckoChildProcessHost>
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{
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static void RetainCallee(GeckoChildProcessHost* obj) { }
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static void ReleaseCallee(GeckoChildProcessHost* obj) { }
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};
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GeckoChildProcessHost::GeckoChildProcessHost(GeckoProcessType aProcessType,
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base::WaitableEventWatcher::Delegate* aDelegate)
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: ChildProcessHost(RENDER_PROCESS), // FIXME/cjones: we should own this enum
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mProcessType(aProcessType),
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mMonitor("mozilla.ipc.GeckChildProcessHost.mMonitor"),
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mLaunched(false),
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mChannelInitialized(false),
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mDelegate(aDelegate),
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mChildProcessHandle(0)
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{
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MOZ_COUNT_CTOR(GeckoChildProcessHost);
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MessageLoop* ioLoop =
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BrowserProcessSubThread::GetMessageLoop(BrowserProcessSubThread::IO);
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ioLoop->PostTask(FROM_HERE,
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NewRunnableMethod(this,
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&GeckoChildProcessHost::InitializeChannel));
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}
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GeckoChildProcessHost::~GeckoChildProcessHost()
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{
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AssertIOThread();
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MOZ_COUNT_DTOR(GeckoChildProcessHost);
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if (mChildProcessHandle > 0)
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ProcessWatcher::EnsureProcessTerminated(mChildProcessHandle
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#if defined(NS_BUILD_REFCNT_LOGGING)
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, false // don't "force"
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#endif
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);
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}
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bool
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GeckoChildProcessHost::SyncLaunch(std::vector<std::string> aExtraOpts)
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{
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MessageLoop* ioLoop =
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BrowserProcessSubThread::GetMessageLoop(BrowserProcessSubThread::IO);
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NS_ASSERTION(MessageLoop::current() != ioLoop, "sync launch from the IO thread NYI");
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ioLoop->PostTask(FROM_HERE,
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NewRunnableMethod(this,
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&GeckoChildProcessHost::PerformAsyncLaunch,
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aExtraOpts));
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// NB: this uses a different mechanism than the chromium parent
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// class.
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MonitorAutoEnter mon(mMonitor);
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while (!mLaunched) {
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mon.Wait();
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}
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return true;
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}
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bool
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GeckoChildProcessHost::AsyncLaunch(std::vector<std::string> aExtraOpts)
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{
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MessageLoop* ioLoop =
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BrowserProcessSubThread::GetMessageLoop(BrowserProcessSubThread::IO);
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ioLoop->PostTask(FROM_HERE,
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NewRunnableMethod(this,
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&GeckoChildProcessHost::PerformAsyncLaunch,
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aExtraOpts));
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// This may look like the sync launch wait, but we only delay as
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// long as it takes to create the channel.
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MonitorAutoEnter mon(mMonitor);
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while (!mChannelInitialized) {
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mon.Wait();
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}
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return true;
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}
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void
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GeckoChildProcessHost::InitializeChannel()
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{
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CreateChannel();
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MonitorAutoEnter mon(mMonitor);
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mChannelInitialized = true;
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mon.Notify();
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}
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bool
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GeckoChildProcessHost::PerformAsyncLaunch(std::vector<std::string> aExtraOpts)
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{
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// FIXME/cjones: make this work from non-IO threads, too
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// We rely on the fact that InitializeChannel() has already been processed
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// on the IO thread before this point is reached.
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if (!GetChannel()) {
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return false;
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}
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base::ProcessHandle process;
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// send the child the PID so that it can open a ProcessHandle back to us.
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// probably don't want to do this in the long run
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char pidstring[32];
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PR_snprintf(pidstring, sizeof(pidstring) - 1,
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"%ld", base::Process::Current().pid());
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const char* const childProcessType =
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XRE_ChildProcessTypeToString(mProcessType);
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//--------------------------------------------------
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#if defined(OS_POSIX)
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// For POSIX, we have to be extremely anal about *not* using
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// std::wstring in code compiled with Mozilla's -fshort-wchar
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// configuration, because chromium is compiled with -fno-short-wchar
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// and passing wstrings from one config to the other is unsafe. So
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// we split the logic here.
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FilePath exePath = FilePath(CommandLine::ForCurrentProcess()->argv()[0]);
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exePath = exePath.DirName();
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exePath = exePath.AppendASCII(MOZ_CHILD_PROCESS_NAME);
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// remap the IPC socket fd to a well-known int, as the OS does for
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// STDOUT_FILENO, for example
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int srcChannelFd, dstChannelFd;
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channel().GetClientFileDescriptorMapping(&srcChannelFd, &dstChannelFd);
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mFileMap.push_back(std::pair<int,int>(srcChannelFd, dstChannelFd));
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// no need for kProcessChannelID, the child process inherits the
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// other end of the socketpair() from us
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std::vector<std::string> childArgv;
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childArgv.push_back(exePath.value());
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childArgv.insert(childArgv.end(), aExtraOpts.begin(), aExtraOpts.end());
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childArgv.push_back(pidstring);
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childArgv.push_back(childProcessType);
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#if defined(MOZ_CRASHREPORTER)
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int childCrashFd, childCrashRemapFd;
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if (!CrashReporter::CreateNotificationPipeForChild(
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&childCrashFd, &childCrashRemapFd))
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return false;
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if (0 <= childCrashFd) {
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mFileMap.push_back(std::pair<int,int>(childCrashFd, childCrashRemapFd));
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// "true" == crash reporting enabled
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childArgv.push_back("true");
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}
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else {
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// "false" == crash reporting disabled
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childArgv.push_back("false");
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}
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#endif
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base::LaunchApp(childArgv, mFileMap, false, &process);
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//--------------------------------------------------
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#elif defined(OS_WIN)
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FilePath exePath =
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FilePath::FromWStringHack(CommandLine::ForCurrentProcess()->program());
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exePath = exePath.DirName();
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exePath = exePath.AppendASCII(MOZ_CHILD_PROCESS_NAME);
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CommandLine cmdLine(exePath.ToWStringHack());
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cmdLine.AppendSwitchWithValue(switches::kProcessChannelID, channel_id());
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for (std::vector<std::string>::iterator it = aExtraOpts.begin();
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it != aExtraOpts.end();
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++it) {
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cmdLine.AppendLooseValue(UTF8ToWide(*it));
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}
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cmdLine.AppendLooseValue(UTF8ToWide(pidstring));
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cmdLine.AppendLooseValue(UTF8ToWide(childProcessType));
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#if defined(MOZ_CRASHREPORTER)
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cmdLine.AppendLooseValue(
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UTF8ToWide(CrashReporter::GetChildNotificationPipe()));
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#endif
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base::LaunchApp(cmdLine, false, false, &process);
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#else
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# error Sorry
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#endif
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if (!process) {
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return false;
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}
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SetHandle(process);
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return true;
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}
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void
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GeckoChildProcessHost::OnChannelConnected(int32 peer_pid)
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{
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MonitorAutoEnter mon(mMonitor);
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mLaunched = true;
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if (!base::OpenProcessHandle(peer_pid, &mChildProcessHandle))
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NS_RUNTIMEABORT("can't open handle to child process");
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mon.Notify();
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}
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// XXX/cjones: these next two methods should basically never be called.
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// after the process is launched, its channel will be used to create
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// one of our channels, AsyncChannel et al.
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void
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GeckoChildProcessHost::OnMessageReceived(const IPC::Message& aMsg)
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{
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}
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void
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GeckoChildProcessHost::OnChannelError()
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{
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// XXXbent Notify that the child process is gone?
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}
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void
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GeckoChildProcessHost::OnWaitableEventSignaled(base::WaitableEvent *event)
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{
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if (mDelegate) {
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mDelegate->OnWaitableEventSignaled(event);
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}
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ChildProcessHost::OnWaitableEventSignaled(event);
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}
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