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/*
* Copyright (C) 2008 Apple 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 "PluginMainThreadScheduler.h"
#include <wtf/StdLibExtras.h>
namespace WebCore {
PluginMainThreadScheduler& PluginMainThreadScheduler::scheduler()
{
DEFINE_STATIC_LOCAL(PluginMainThreadScheduler, scheduler, ());
return scheduler;
}
PluginMainThreadScheduler::PluginMainThreadScheduler()
: m_callPending(false)
{
}
void PluginMainThreadScheduler::scheduleCall(NPP npp, MainThreadFunction function, void* userData)
{
MutexLocker lock(m_queueMutex);
CallQueueMap::iterator it = m_callQueueMap.find(npp);
if (it == m_callQueueMap.end())
return;
it->second.append(Call(function, userData));
if (!m_callPending) {
callOnMainThread(mainThreadCallback, this);
m_callPending = true;
}
}
void PluginMainThreadScheduler::registerPlugin(NPP npp)
{
MutexLocker lock(m_queueMutex);
ASSERT(!m_callQueueMap.contains(npp));
m_callQueueMap.set(npp, Deque<Call>());
}
void PluginMainThreadScheduler::unregisterPlugin(NPP npp)
{
MutexLocker lock(m_queueMutex);
ASSERT(m_callQueueMap.contains(npp));
m_callQueueMap.remove(npp);
}
void PluginMainThreadScheduler::dispatchCallsForPlugin(NPP npp, const Deque<Call>& calls)
{
Deque<Call>::const_iterator end = calls.end();
for (Deque<Call>::const_iterator it = calls.begin(); it != end; ++it) {
// Check if the plug-in has been destroyed.
{
MutexLocker lock(m_queueMutex);
if (!m_callQueueMap.contains(npp))
return;
}
(*it).performCall();
}
}
void PluginMainThreadScheduler::dispatchCalls()
{
m_queueMutex.lock();
CallQueueMap copy(m_callQueueMap);
{
// Empty all the queues in the original map
CallQueueMap::iterator end = m_callQueueMap.end();
for (CallQueueMap::iterator it = m_callQueueMap.begin(); it != end; ++it)
it->second.clear();
}
m_callPending = false;
m_queueMutex.unlock();
CallQueueMap::iterator end = copy.end();
for (CallQueueMap::iterator it = copy.begin(); it != end; ++it)
dispatchCallsForPlugin(it->first, it->second);
}
void PluginMainThreadScheduler::mainThreadCallback(void* context)
{
static_cast<PluginMainThreadScheduler*>(context)->dispatchCalls();
}
} // namespace WebCore
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