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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"
namespace WebCore {
PluginMainThreadScheduler& PluginMainThreadScheduler::scheduler()
{
DEPRECATED_DEFINE_STATIC_LOCAL(PluginMainThreadScheduler, scheduler, ());
return scheduler;
}
PluginMainThreadScheduler::PluginMainThreadScheduler()
: m_callPending(false)
{
}
void PluginMainThreadScheduler::scheduleCall(NPP npp, MainThreadFunction function, void* userData)
{
LockHolder lock(m_queueMutex);
CallQueueMap::iterator it = m_callQueueMap.find(npp);
if (it == m_callQueueMap.end())
return;
it->value.append(Call(function, userData));
if (!m_callPending) {
callOnMainThread([this] {
dispatchCalls();
});
m_callPending = true;
}
}
void PluginMainThreadScheduler::registerPlugin(NPP npp)
{
LockHolder lock(m_queueMutex);
ASSERT(!m_callQueueMap.contains(npp));
m_callQueueMap.set(npp, Deque<Call>());
}
void PluginMainThreadScheduler::unregisterPlugin(NPP npp)
{
LockHolder lock(m_queueMutex);
ASSERT(m_callQueueMap.contains(npp));
m_callQueueMap.remove(npp);
}
void PluginMainThreadScheduler::dispatchCallsForPlugin(NPP npp, const Deque<Call>& calls)
{
for (auto& call : calls) {
// Check if the plug-in has been destroyed.
{
LockHolder lock(m_queueMutex);
if (!m_callQueueMap.contains(npp))
return;
}
call.performCall();
}
}
void PluginMainThreadScheduler::dispatchCalls()
{
m_queueMutex.lock();
CallQueueMap copy(m_callQueueMap);
// Empty all the queues in the original map
for (auto& call : m_callQueueMap.values())
call.clear();
m_callPending = false;
m_queueMutex.unlock();
for (auto& entry : copy)
dispatchCallsForPlugin(entry.key, entry.value);
}
} // namespace WebCore
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