1 /*

     2  * Copyright (C) 2010 Apple Inc. All rights reserved.

     3  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)

     4  *

     5  * Redistribution and use in source and binary forms, with or without

     6  * modification, are permitted provided that the following conditions

     7  * are met:

     8  * 1. Redistributions of source code must retain the above copyright

     9  *    notice, this list of conditions and the following disclaimer.

    10  * 2. Redistributions in binary form must reproduce the above copyright

    11  *    notice, this list of conditions and the following disclaimer in the

    12  *    documentation and/or other materials provided with the distribution.

    13  *

    14  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''

    15  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

    16  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    17  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS

    18  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

    19  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

    20  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    21  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

    22  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    23  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

    24  * THE POSSIBILITY OF SUCH DAMAGE.

    25  */

    26 

    27 #include "ProcessLauncher.h"

    28 

    29 #include "Connection.h"

    30 #include "RunLoop.h"

    31 #include "WebProcess.h"

    32 #include <WebCore/PlatformString.h>

    33 #include <runtime/InitializeThreading.h>

    34 #include <string>

    35 #include <wtf/PassRefPtr.h>

    36 #include <wtf/Threading.h>

    37 

    38 #if USE(MEEGOTOUCH)

    39 #include <meegotouch/MComponentData>

    40 #endif

    41 

    42 #include <QApplication>

    43 #include <QDebug>

    44 #include <QLocalServer>

    45 #include <QProcess>

    46 

    47 #include <QtCore/qglobal.h>

    48 

    49 #include <sys/resource.h>

    50 #include <unistd.h>

    51 

    52 #if !defined(QWEBKIT_EXPORT)

    53 #  if defined(QT_SHARED)

    54 #    define QWEBKIT_EXPORT Q_DECL_EXPORT

    55 #  else

    56 #    define QWEBKIT_EXPORT

    57 #  endif

    58 #endif

    59 

    60 using namespace WebCore;

    61 

    62 namespace WebKit {

    63 

    64 class ProcessLauncherHelper : public QObject {

    65     Q_OBJECT

    66 public:

    67     void launch(WebKit::ProcessLauncher*);

    68     QLocalSocket* takePendingConnection();

    69     static ProcessLauncherHelper* instance();

    70 private:

    71     ProcessLauncherHelper();

    72     QLocalServer m_server;

    73     QList<WorkItem*> m_items;

    74 

    75     Q_SLOT void newConnection();

    76 };

    77 

    78 void ProcessLauncherHelper::launch(WebKit::ProcessLauncher* launcher)

    79 {

    80     QString program("QtWebProcess " + m_server.serverName());

    81 

    82     QProcess* webProcess = new QProcess();

    83     webProcess->start(program);

    84 

    85     if (!webProcess->waitForStarted()) {

    86         qDebug() << "Failed to start" << program;

    87         ASSERT_NOT_REACHED();

    88         delete webProcess;

    89         return;

    90     }

    91 

    92     setpriority(PRIO_PROCESS, webProcess->pid(), 10);

    93 

    94     m_items.append(WorkItem::create(launcher, &WebKit::ProcessLauncher::didFinishLaunchingProcess, webProcess, m_server.serverName()).leakPtr());

    95 }

    96 

    97 QLocalSocket* ProcessLauncherHelper::takePendingConnection()

    98 {

    99     return m_server.nextPendingConnection();

   100 }

   101 

   102 ProcessLauncherHelper::ProcessLauncherHelper()

   103 {

   104     srandom(time(0));

   105     if (!m_server.listen("QtWebKit" + QString::number(random()))) {

   106         qDebug() << "Failed to create server socket.";

   107         ASSERT_NOT_REACHED();

   108     }

   109     connect(&m_server, SIGNAL(newConnection()), this, SLOT(newConnection()));

   110 }

   111 

   112 ProcessLauncherHelper* ProcessLauncherHelper::instance()

   113 {

   114     static ProcessLauncherHelper* result = new ProcessLauncherHelper();

   115     return result;

   116 }

   117 

   118 void ProcessLauncherHelper::newConnection()

   119 {

   120     ASSERT(!m_items.isEmpty());

   121 

   122     m_items[0]->execute();

   123     delete m_items[0];

   124     m_items.pop_front();

   125 }

   126 

   127 void ProcessLauncher::launchProcess()

   128 {

   129     ProcessLauncherHelper::instance()->launch(this);

   130 }

   131 

   132 void ProcessLauncher::terminateProcess()

   133 {

   134     if (!m_processIdentifier)

   135         return;

   136 

   137     QObject::connect(m_processIdentifier, SIGNAL(finished(int)), m_processIdentifier, SLOT(deleteLater()), Qt::QueuedConnection);

   138     m_processIdentifier->kill();

   139 }

   140 

   141 QLocalSocket* ProcessLauncher::takePendingConnection()

   142 {

   143     return ProcessLauncherHelper::instance()->takePendingConnection();

   144 }

   145 

   146 static void* webThreadBody(void* /* context */)

   147 {

   148     // Initialization

   149     JSC::initializeThreading();

   150     WTF::initializeMainThread();

   151 

   152     // FIXME: We do not support threaded mode for now.

   153 

   154     WebProcess::shared().initialize("foo", RunLoop::current());

   155     RunLoop::run();

   156 

   157     return 0;

   158 }

   159 

   160 CoreIPC::Connection::Identifier ProcessLauncher::createWebThread()

   161 {

   162     srandom(time(0));

   163     int connectionIdentifier = random();

   164 

   165     if (!createThread(webThreadBody, reinterpret_cast<void*>(connectionIdentifier), "WebKit2: WebThread")) {

   166         qWarning() << "failed starting thread";

   167         return 0;

   168     }

   169 

   170     QString serverIdentifier = QString::number(connectionIdentifier);

   171     return serverIdentifier;

   172 }

   173 

   174 } // namespace WebKit

   175 

   176 QWEBKIT_EXPORT int webProcessMain(int argc, char** argv)

   177 {

   178     QApplication* app = new QApplication(argc, argv);

   179 

   180 #if USE(MEEGOTOUCH)

   181     new MComponentData(argc, argv);

   182 #endif

   183 

   184     srandom(time(0));

   185 

   186     JSC::initializeThreading();

   187     WTF::initializeMainThread();

   188     RunLoop::initializeMainRunLoop();

   189 

   190     // Create the connection.

   191     QString identifier(app->arguments().size() > 1 ? app->arguments().at(1) : "");

   192     WebKit::WebProcess::shared().initialize(identifier, RunLoop::main());

   193 

   194     RunLoop::run();

   195 

   196     // FIXME: Do more cleanup here.

   197 

   198     return 0;

   199 }

   200 

   201 #include "ProcessLauncherQt.moc"