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+/****************************************************************************
+**
+** Copyright (C) 2008-2012 NVIDIA Corporation.
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt 3D Studio.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#pragma once
+#ifndef QT3DS_RENDER_THREAD_POOL_H
+#define QT3DS_RENDER_THREAD_POOL_H
+#include "Qt3DSRender.h"
+#include "foundation/Qt3DSRefCounted.h"
+
+namespace qt3ds {
+namespace render {
+
+ typedef void (*TTaskFunction)(void *inUserData);
+
+ struct TaskStates
+ {
+ enum Enum {
+ UnknownTask = 0,
+ Queued,
+ Running,
+ };
+ };
+
+ struct CancelReturnValues
+ {
+ enum Enum {
+ TaskCanceled = 0,
+ TaskRunning,
+ TaskNotFound,
+ };
+ };
+
+ class IThreadPool : public NVRefCounted
+ {
+ protected:
+ virtual ~IThreadPool() {}
+ public:
+ // Add a task to be run at some point in the future.
+ // Tasks will be run roughly in order they are given.
+ // The returned value is a handle that can be used to query
+ // details about the task
+ // Cancel function will be called if the thread pool is destroyed or
+ // of the task gets canceled.
+ virtual QT3DSU64 AddTask(void *inUserData, TTaskFunction inFunction,
+ TTaskFunction inCancelFunction) = 0;
+ virtual TaskStates::Enum GetTaskState(QT3DSU64 inTaskId) = 0;
+ virtual CancelReturnValues::Enum CancelTask(QT3DSU64 inTaskId) = 0;
+
+ static IThreadPool &CreateThreadPool(NVFoundationBase &inFoundation,
+ QT3DSU32 inNumThreads = 4);
+ };
+}
+}
+#endif \ No newline at end of file