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/*
* 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"
#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(), TextPosition1::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.
v8::Context::Scope scope(v8Context);
proxy->setTimerCallback(true);
// 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);
proxy->setTimerCallback(false);
}
#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
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