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//
// Copyright 2016 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// WorkerThread:
// Task running thread for ANGLE, similar to a TaskRunner in Chromium.
// Might be implemented differently depending on platform.
//
#include "libANGLE/WorkerThread.h"
namespace angle
{
namespace priv
{
// SingleThreadedWorkerPool implementation.
SingleThreadedWorkerPool::SingleThreadedWorkerPool(size_t maxThreads)
: WorkerThreadPoolBase(maxThreads)
{
}
SingleThreadedWorkerPool::~SingleThreadedWorkerPool()
{
}
SingleThreadedWaitableEvent SingleThreadedWorkerPool::postWorkerTaskImpl(Closure *task)
{
(*task)();
return SingleThreadedWaitableEvent(EventResetPolicy::Automatic, EventInitialState::Signaled);
}
// SingleThreadedWaitableEvent implementation.
SingleThreadedWaitableEvent::SingleThreadedWaitableEvent()
: SingleThreadedWaitableEvent(EventResetPolicy::Automatic, EventInitialState::NonSignaled)
{
}
SingleThreadedWaitableEvent::SingleThreadedWaitableEvent(EventResetPolicy resetPolicy,
EventInitialState initialState)
: WaitableEventBase(resetPolicy, initialState)
{
}
SingleThreadedWaitableEvent::~SingleThreadedWaitableEvent()
{
}
SingleThreadedWaitableEvent::SingleThreadedWaitableEvent(SingleThreadedWaitableEvent &&other)
: WaitableEventBase(std::move(other))
{
}
SingleThreadedWaitableEvent &SingleThreadedWaitableEvent::operator=(
SingleThreadedWaitableEvent &&other)
{
return copyBase(std::move(other));
}
void SingleThreadedWaitableEvent::resetImpl()
{
mSignaled = false;
}
void SingleThreadedWaitableEvent::waitImpl()
{
}
void SingleThreadedWaitableEvent::signalImpl()
{
mSignaled = true;
}
#if (ANGLE_STD_ASYNC_WORKERS == ANGLE_ENABLED)
// AsyncWorkerPool implementation.
AsyncWorkerPool::AsyncWorkerPool(size_t maxThreads) : WorkerThreadPoolBase(maxThreads)
{
}
AsyncWorkerPool::~AsyncWorkerPool()
{
}
AsyncWaitableEvent AsyncWorkerPool::postWorkerTaskImpl(Closure *task)
{
auto future = std::async(std::launch::async, [task] { (*task)(); });
AsyncWaitableEvent waitable(EventResetPolicy::Automatic, EventInitialState::NonSignaled);
waitable.setFuture(std::move(future));
return waitable;
}
// AsyncWaitableEvent implementation.
AsyncWaitableEvent::AsyncWaitableEvent()
: AsyncWaitableEvent(EventResetPolicy::Automatic, EventInitialState::NonSignaled)
{
}
AsyncWaitableEvent::AsyncWaitableEvent(EventResetPolicy resetPolicy, EventInitialState initialState)
: WaitableEventBase(resetPolicy, initialState)
{
}
AsyncWaitableEvent::~AsyncWaitableEvent()
{
}
AsyncWaitableEvent::AsyncWaitableEvent(AsyncWaitableEvent &&other)
: WaitableEventBase(std::move(other)), mFuture(std::move(other.mFuture))
{
}
AsyncWaitableEvent &AsyncWaitableEvent::operator=(AsyncWaitableEvent &&other)
{
std::swap(mFuture, other.mFuture);
return copyBase(std::move(other));
}
void AsyncWaitableEvent::setFuture(std::future<void> &&future)
{
mFuture = std::move(future);
}
void AsyncWaitableEvent::resetImpl()
{
mSignaled = false;
mFuture = std::future<void>();
}
void AsyncWaitableEvent::waitImpl()
{
if (mSignaled || !mFuture.valid())
{
return;
}
mFuture.wait();
signal();
}
void AsyncWaitableEvent::signalImpl()
{
mSignaled = true;
if (mResetPolicy == EventResetPolicy::Automatic)
{
reset();
}
}
#endif // (ANGLE_STD_ASYNC_WORKERS == ANGLE_ENABLED)
} // namespace priv
} // namespace angle
|
