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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 "bindings/v8/DOMDataStore.h"
     33 
     34 #include "bindings/v8/DOMWrapperMap.h"
     35 #include "bindings/v8/V8Binding.h"
     36 #include "wtf/MainThread.h"
     37 
     38 namespace WebCore {
     39 
     40 DOMDataStore::DOMDataStore(WrapperWorldType type)
     41     : m_type(type)
     42     , m_wrapperMap(v8::Isolate::GetCurrent()) // FIXME Don't call GetCurrent twice.
     43 {
     44     V8PerIsolateData::current()->registerDOMDataStore(this);
     45 }
     46 
     47 DOMDataStore::~DOMDataStore()
     48 {
     49     ASSERT(m_type != MainWorld); // We never actually destruct the main world's DOMDataStore.
     50     V8PerIsolateData::current()->unregisterDOMDataStore(this);
     51     m_wrapperMap.clear();
     52 }
     53 
     54 DOMDataStore* DOMDataStore::mainWorldStore()
     55 {
     56     DEFINE_STATIC_LOCAL(DOMDataStore, mainWorldDOMDataStore, (MainWorld));
     57     ASSERT(isMainThread());
     58     return &mainWorldDOMDataStore;
     59 }
     60 
     61 DOMDataStore* DOMDataStore::current(v8::Isolate* isolate)
     62 {
     63     V8PerIsolateData* data = isolate ? V8PerIsolateData::from(isolate) : V8PerIsolateData::current();
     64     if (UNLIKELY(!!data->workerDOMDataStore()))
     65         return data->workerDOMDataStore();
     66 
     67     if (DOMWrapperWorld::isolatedWorldsExist()) {
     68         DOMWrapperWorld* isolatedWorld = DOMWrapperWorld::isolatedWorld(v8::Context::GetEntered());
     69         if (UNLIKELY(!!isolatedWorld))
     70             return isolatedWorld->isolatedWorldDOMDataStore();
     71     }
     72 
     73     return mainWorldStore();
     74 }
     75 
     76 } // namespace WebCore
     77