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/*
* Copyright (C) 2010 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. AND ITS 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 APPLE INC. OR ITS 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 <wtf/WorkQueue.h>
#include <wtf/BlockPtr.h>
#include <wtf/Ref.h>
namespace WTF {
void WorkQueue::dispatch(Function<void()>&& function)
{
dispatch_async(m_dispatchQueue, makeBlockPtr([protectedThis = makeRef(*this), function = WTFMove(function)] {
function();
}).get());
}
void WorkQueue::dispatchAfter(Seconds duration, Function<void()>&& function)
{
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration.nanosecondsAs<int64_t>()), m_dispatchQueue, makeBlockPtr([protectedThis = makeRef(*this), function = WTFMove(function)] {
function();
}).get());
}
#if HAVE(QOS_CLASSES)
static dispatch_qos_class_t dispatchQOSClass(WorkQueue::QOS qos)
{
switch (qos) {
case WorkQueue::QOS::UserInteractive:
return Thread::adjustedQOSClass(QOS_CLASS_USER_INTERACTIVE);
case WorkQueue::QOS::UserInitiated:
return Thread::adjustedQOSClass(QOS_CLASS_USER_INITIATED);
case WorkQueue::QOS::Default:
return Thread::adjustedQOSClass(QOS_CLASS_DEFAULT);
case WorkQueue::QOS::Utility:
return Thread::adjustedQOSClass(QOS_CLASS_UTILITY);
case WorkQueue::QOS::Background:
return Thread::adjustedQOSClass(QOS_CLASS_BACKGROUND);
}
}
#else
static dispatch_queue_t targetQueueForQOSClass(WorkQueue::QOS qos)
{
switch (qos) {
case WorkQueue::QOS::UserInteractive:
case WorkQueue::QOS::UserInitiated:
return dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0);
case WorkQueue::QOS::Utility:
return dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_LOW, 0);
case WorkQueue::QOS::Background:
return dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0);
case WorkQueue::QOS::Default:
ASSERT_NOT_REACHED();
return nullptr;
}
ASSERT_NOT_REACHED();
}
#endif
void WorkQueue::platformInitialize(const char* name, Type type, QOS qos)
{
dispatch_queue_attr_t attr = type == Type::Concurrent ? DISPATCH_QUEUE_CONCURRENT : DISPATCH_QUEUE_SERIAL;
attr = dispatch_queue_attr_make_with_qos_class(attr, dispatchQOSClass(qos), 0);
m_dispatchQueue = dispatch_queue_create(name, attr);
dispatch_set_context(m_dispatchQueue, this);
}
void WorkQueue::platformInvalidate()
{
dispatch_release(m_dispatchQueue);
}
void WorkQueue::concurrentApply(size_t iterations, WTF::Function<void(size_t index)>&& function)
{
dispatch_apply(iterations, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), makeBlockPtr([function = WTFMove(function)](size_t index) {
function(index);
}).get());
}
}