77 lines
2.7 KiB
C
77 lines
2.7 KiB
C
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/* ****************************************************************************** *\
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Copyright (C) 2012-2013 Intel Corporation. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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- Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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- Neither the name of Intel Corporation nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY INTEL CORPORATION "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL INTEL CORPORATION BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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File Name: mfx_critical_section.h
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\* ****************************************************************************** */
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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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