67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
// Copyright (c) 2012-2019 Intel Corporation
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#if !defined(__MFX_CRITICAL_SECTION_H)
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#define __MFX_CRITICAL_SECTION_H
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#include <mfxdefs.h>
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namespace MFX
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{
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// Just set "critical section" instance to zero for initialization.
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typedef volatile mfxL32 mfxCriticalSection;
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// Enter the global critical section.
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void mfxEnterCriticalSection(mfxCriticalSection *pCSection);
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// Leave the global critical section.
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void mfxLeaveCriticalSection(mfxCriticalSection *pCSection);
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class MFXAutomaticCriticalSection
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{
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public:
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// Constructor
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explicit MFXAutomaticCriticalSection(mfxCriticalSection *pCSection)
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{
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m_pCSection = pCSection;
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mfxEnterCriticalSection(m_pCSection);
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}
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// Destructor
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~MFXAutomaticCriticalSection()
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{
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mfxLeaveCriticalSection(m_pCSection);
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}
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protected:
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// Pointer to a critical section
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mfxCriticalSection *m_pCSection;
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private:
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// unimplemented by intent to make this class non-copyable
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MFXAutomaticCriticalSection(const MFXAutomaticCriticalSection &);
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void operator=(const MFXAutomaticCriticalSection &);
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};
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} // namespace MFX
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#endif // __MFX_CRITICAL_SECTION_H
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