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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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "foundation/windows/Qt3DSWindowsInclude.h"
#include "foundation/Qt3DSSemaphore.h"
#include "foundation/Qt3DSAllocator.h"
namespace qt3ds {
namespace foundation {
class SemaphoreImpl
{
public:
SemaphoreImpl(NVAllocatorCallback &alloc)
: mAllocator(alloc)
{
}
NVAllocatorCallback &mAllocator;
HANDLE handle;
};
Semaphore::Semaphore(NVAllocatorCallback &alloc, QT3DSU32 initialCount, QT3DSU32 maxCount)
{
mImpl = QT3DS_NEW(alloc, SemaphoreImpl)(alloc);
mImpl->handle = CreateSemaphore(0, initialCount, maxCount, (LPCTSTR)NULL);
}
Semaphore::~Semaphore()
{
CloseHandle(mImpl->handle);
QT3DS_FREE(mImpl->mAllocator, mImpl);
}
bool Semaphore::wait(QT3DSU32 milliseconds)
{
if (milliseconds == -1)
milliseconds = INFINITE;
return WaitForSingleObject(mImpl->handle, milliseconds) == WAIT_OBJECT_0 ? true : false;
}
void Semaphore::post() { ReleaseSemaphore(mImpl->handle, 1, (LPLONG)NULL); }
} // namespace foundation
} // namespace qt3ds
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