1 /*

     2  * Copyright (C) 2009 Google 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 are

     6  * met:

     7  *

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

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

    10  *     * Redistributions in binary form must reproduce the above

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

    12  * in the documentation and/or other materials provided with the

    13  * distribution.

    14  *     * Neither the name of Google Inc. nor the names of its

    15  * contributors may be used to endorse or promote products derived from

    16  * this software without specific prior written permission.

    17  *

    18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

    20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

    21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

    22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

    23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

    24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

    25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

    26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    29  */

    30 

    31 #include "config.h"

    32 #include "WebKit.h"

    33 

    34 #include "AtomicString.h"

    35 #include "DOMTimer.h"

    36 #include "Logging.h"

    37 #include "Page.h"

    38 #include "RuntimeEnabledFeatures.h"

    39 #include "TextEncoding.h"

    40 #include "WebMediaPlayerClientImpl.h"

    41 #include "WebSocket.h"

    42 #include "WorkerContextExecutionProxy.h"

    43 

    44 #include <wtf/Assertions.h>

    45 #include <wtf/Threading.h>

    46 

    47 namespace WebKit {

    48 

    49 static WebKitClient* s_webKitClient = 0;

    50 static bool s_layoutTestMode = false;

    51 

    52 void initialize(WebKitClient* webKitClient)

    53 {

    54     ASSERT(webKitClient);

    55     ASSERT(!s_webKitClient);

    56     s_webKitClient = webKitClient;

    57 

    58     WTF::initializeThreading();

    59     WTF::initializeMainThread();

    60     WebCore::AtomicString::init();

    61 

    62     // Chromium sets the minimum interval timeout to 4ms, overriding the

    63     // default of 10ms.  We'd like to go lower, however there are poorly

    64     // coded websites out there which do create CPU-spinning loops.  Using

    65     // 4ms prevents the CPU from spinning too busily and provides a balance

    66     // between CPU spinning and the smallest possible interval timer.

    67     WebCore::DOMTimer::setMinTimerInterval(0.004);

    68 

    69     // There are some code paths (for example, running WebKit in the browser

    70     // process and calling into LocalStorage before anything else) where the

    71     // UTF8 string encoding tables are used on a background thread before

    72     // they're set up.  This is a problem because their set up routines assert

    73     // they're running on the main WebKitThread.  It might be possible to make

    74     // the initialization thread-safe, but given that so many code paths use

    75     // this, initializing this lazily probably doesn't buy us much.

    76     WebCore::UTF8Encoding();

    77 }

    78 

    79 void shutdown()

    80 {

    81     s_webKitClient = 0;

    82 }

    83 

    84 WebKitClient* webKitClient()

    85 {

    86     return s_webKitClient;

    87 }

    88 

    89 void setLayoutTestMode(bool value)

    90 {

    91     s_layoutTestMode = value;

    92 }

    93 

    94 bool layoutTestMode()

    95 {

    96     return s_layoutTestMode;

    97 }

    98 

    99 void enableLogChannel(const char* name)

   100 {

   101     WTFLogChannel* channel = WebCore::getChannelFromName(name);

   102     if (channel)

   103         channel->state = WTFLogChannelOn;

   104 }

   105 

   106 void resetPluginCache(bool reloadPages)

   107 {

   108     WebCore::Page::refreshPlugins(reloadPages);

   109 }

   110 

   111 } // namespace WebKit