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      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 "Logging.h"
     35 #include "Page.h"
     36 #include "RuntimeEnabledFeatures.h"
     37 #include "Settings.h"
     38 #include "TextEncoding.h"
     39 #include "WebMediaPlayerClientImpl.h"
     40 #include "WebSocket.h"
     41 #include "WorkerContextExecutionProxy.h"
     42 
     43 #include <wtf/Assertions.h>
     44 #include <wtf/Threading.h>
     45 #include <wtf/text/AtomicString.h>
     46 
     47 namespace WebKit {
     48 
     49 // Make sure we are not re-initialized in the same address space.
     50 // Doing so may cause hard to reproduce crashes.
     51 static bool s_webKitInitialized = false;
     52 
     53 static WebKitClient* s_webKitClient = 0;
     54 static bool s_layoutTestMode = false;
     55 
     56 void initialize(WebKitClient* webKitClient)
     57 {
     58     ASSERT(!s_webKitInitialized);
     59     s_webKitInitialized = true;
     60 
     61     ASSERT(webKitClient);
     62     ASSERT(!s_webKitClient);
     63     s_webKitClient = webKitClient;
     64 
     65     WTF::initializeThreading();
     66     WTF::initializeMainThread();
     67     WTF::AtomicString::init();
     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
    112