1 /*

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

     3  *

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

     5  * modification, are permitted provided that the following conditions

     6  * are met:

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

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

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

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

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

    12  *

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

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

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

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

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

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

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

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

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

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

    23  * THE POSSIBILITY OF SUCH DAMAGE.

    24  */

    25 

    26 #include "WebProcessManager.h"

    27 

    28 #include "WebContext.h"

    29 

    30 namespace WebKit {

    31 

    32 WebProcessManager& WebProcessManager::shared()

    33 {

    34     static WebProcessManager& manager = *new WebProcessManager;

    35     return manager;

    36 }

    37 

    38 WebProcessManager::WebProcessManager()

    39 {

    40 }

    41 

    42 WebProcessProxy* WebProcessManager::getWebProcess(WebContext* context)

    43 {

    44     switch (context->processModel()) {

    45         case ProcessModelSharedSecondaryProcess: {

    46             if (!m_sharedProcess)

    47                 m_sharedProcess = WebProcessProxy::create(context);

    48             return m_sharedProcess.get();

    49         }

    50         case ProcessModelSharedSecondaryThread: {

    51             if (!m_sharedThread)

    52                 m_sharedThread = WebProcessProxy::create(context);

    53             return m_sharedThread.get();

    54         }

    55         case ProcessModelSecondaryProcess: {

    56             std::pair<ProcessMap::iterator, bool> result = m_processMap.add(context, 0);

    57             if (result.second) {

    58                 ASSERT(!result.first->second);

    59                 result.first->second = WebProcessProxy::create(context);

    60             }

    61 

    62             ASSERT(result.first->second);

    63             return result.first->second.get();

    64         }

    65     }

    66     

    67     ASSERT_NOT_REACHED();

    68     return 0;

    69 }

    70 

    71 void WebProcessManager::processDidClose(WebProcessProxy* process, WebContext* context)

    72 {

    73     if (process == m_sharedProcess) {

    74         ASSERT(context->processModel() == ProcessModelSharedSecondaryProcess);

    75         m_sharedProcess = 0;

    76         return;

    77     }

    78 

    79     ProcessMap::iterator it = m_processMap.find(context);

    80     if (it != m_processMap.end()) {

    81         ASSERT(it->second == process);

    82         m_processMap.remove(it);

    83         return;

    84     }

    85 

    86     // The shared thread connection should never be closed.

    87     ASSERT_NOT_REACHED();

    88 }

    89 

    90 } // namespace WebKit