Changes to support a second VM.

Source/WebCore/bindings/v8/ScheduledAction.cpp

-/*
- * Copyright (C) 2007-2009 Google Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- *     * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *     * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "ScheduledAction.h"
-
-#include "Document.h"
-#include "ScriptExecutionContext.h"
-#include "ScriptSourceCode.h"
-
-#if PLATFORM(CHROMIUM)
-#include "TraceEvent.h"
-#endif
-
-#include "V8Binding.h"
-#include "V8Proxy.h"
-#include "WorkerContext.h"
-#include "WorkerContextExecutionProxy.h"
-#include "WorkerThread.h"
-
-namespace WebCore {
-
-ScheduledAction::ScheduledAction(v8::Handle<v8::Context> context, v8::Handle<v8::Function> func, int argc, v8::Handle<v8::Value> argv[])
-    : m_context(context)
-    , m_code(String(), KURL(), TextPosition::belowRangePosition())
-{
-    m_function = v8::Persistent<v8::Function>::New(func);
-
-#ifndef NDEBUG
-    V8GCController::registerGlobalHandle(SCHEDULED_ACTION, this, m_function);
-#endif
-
-    m_argc = argc;
-    if (argc > 0) {
-        m_argv = new v8::Persistent<v8::Value>[argc];
-        for (int i = 0; i < argc; i++) {
-            m_argv[i] = v8::Persistent<v8::Value>::New(argv[i]);
-
-#ifndef NDEBUG
-    V8GCController::registerGlobalHandle(SCHEDULED_ACTION, this, m_argv[i]);
-#endif
-        }
-    } else
-        m_argv = 0;
-}
-
-ScheduledAction::~ScheduledAction()
-{
-    if (m_function.IsEmpty())
-        return;
-
-#ifndef NDEBUG
-    V8GCController::unregisterGlobalHandle(this, m_function);
-#endif
-    m_function.Dispose();
-
-    for (int i = 0; i < m_argc; i++) {
-#ifndef NDEBUG
-        V8GCController::unregisterGlobalHandle(this, m_argv[i]);
-#endif
-        m_argv[i].Dispose();
-    }
-
-    if (m_argc > 0)
-        delete[] m_argv;
-}
-
-void ScheduledAction::execute(ScriptExecutionContext* context)
-{
-    V8Proxy* proxy = V8Proxy::retrieve(context);
-    if (proxy)
-        execute(proxy);
-#if ENABLE(WORKERS)
-    else if (context->isWorkerContext())
-        execute(static_cast<WorkerContext*>(context));
-#endif
-    // It's possible that Javascript is disabled and that we have neither a V8Proxy
-    // nor a WorkerContext.  Do nothing in that case.
-}
-
-void ScheduledAction::execute(V8Proxy* proxy)
-{
-    ASSERT(proxy);
-
-    v8::HandleScope handleScope;
-    v8::Handle<v8::Context> v8Context = v8::Local<v8::Context>::New(m_context.get());
-    if (v8Context.IsEmpty())
-        return; // JS may not be enabled.
-
-#if PLATFORM(CHROMIUM)
-    TRACE_EVENT("ScheduledAction::execute", this, 0);
-#endif
-
-    v8::Context::Scope scope(v8Context);
-
-    // FIXME: Need to implement timeouts for preempting a long-running script.
-    if (!m_function.IsEmpty() && m_function->IsFunction()) {
-        proxy->callFunction(v8::Persistent<v8::Function>::Cast(m_function), v8Context->Global(), m_argc, m_argv);
-        Document::updateStyleForAllDocuments();
-    } else
-        proxy->evaluate(m_code, 0);
-
-    // The 'proxy' may be invalid at this point since JS could have released the owning Frame.
-}
-
-#if ENABLE(WORKERS)
-void ScheduledAction::execute(WorkerContext* workerContext)
-{
-    // In a Worker, the execution should always happen on a worker thread.
-    ASSERT(workerContext->thread()->threadID() == currentThread());
-  
-    WorkerScriptController* scriptController = workerContext->script();
-
-    if (!m_function.IsEmpty() && m_function->IsFunction()) {
-        v8::HandleScope handleScope;
-        v8::Handle<v8::Context> v8Context = v8::Local<v8::Context>::New(m_context.get());
-        ASSERT(!v8Context.IsEmpty());
-        v8::Context::Scope scope(v8Context);
-        m_function->Call(v8Context->Global(), m_argc, m_argv);
-    } else
-        scriptController->evaluate(m_code);
-}
-#endif
-
-} // namespace WebCore