WorkQueueCocoa.cpp [plain text]
#include "config.h"
#include "WorkQueue.h"
namespace WTF {
void WorkQueue::dispatch(std::function<void ()> function)
{
ref();
dispatch_async(m_dispatchQueue, ^{
function();
deref();
});
}
void WorkQueue::dispatchAfter(std::chrono::nanoseconds duration, std::function<void ()> function)
{
ref();
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, duration.count()), m_dispatchQueue, ^{
function();
deref();
});
}
#if HAVE(QOS_CLASSES)
static dispatch_qos_class_t dispatchQOSClass(WorkQueue::QOS qos)
{
switch (qos) {
case WorkQueue::QOS::UserInteractive:
return QOS_CLASS_USER_INTERACTIVE;
case WorkQueue::QOS::UserInitiated:
return QOS_CLASS_USER_INITIATED;
case WorkQueue::QOS::Default:
return QOS_CLASS_DEFAULT;
case WorkQueue::QOS::Utility:
return QOS_CLASS_UTILITY;
case WorkQueue::QOS::Background:
return 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;
#if HAVE(QOS_CLASSES)
attr = dispatch_queue_attr_make_with_qos_class(attr, dispatchQOSClass(qos), 0);
#else
UNUSED_PARAM(qos);
#endif
m_dispatchQueue = dispatch_queue_create(name, attr);
#if !HAVE(QOS_CLASSES)
if (qos != WorkQueue::QOS::Default)
dispatch_set_target_queue(m_dispatchQueue, targetQueueForQOSClass(qos));
#endif
dispatch_set_context(m_dispatchQueue, this);
}
void WorkQueue::platformInvalidate()
{
dispatch_release(m_dispatchQueue);
}
}