50 lines
963 B
C
50 lines
963 B
C
/***
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*sys/locking.h - flags for locking() function
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*
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* Copyright (c) 1985-1995, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* This file defines the flags for the locking() function.
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* [System V]
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*
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* [Public]
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*
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****/
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#if _MSC_VER > 1000
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#pragma once
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#endif
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#ifndef _INC_LOCKING
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#define _INC_LOCKING
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#if !defined(_WIN32) && !defined(_MAC)
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#error ERROR: Only Mac or Win32 targets supported!
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#endif
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#define _LK_UNLCK 0 /* unlock the file region */
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#ifdef _WIN32
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#define _LK_LOCK 1 /* lock the file region */
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#endif
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#define _LK_NBLCK 2 /* non-blocking lock */
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#ifdef _WIN32
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#define _LK_RLCK 3 /* lock for writing */
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#endif
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#define _LK_NBRLCK 4 /* non-blocking lock for writing */
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#if !__STDC__
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/* Non-ANSI names for compatibility */
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#define LK_UNLCK _LK_UNLCK
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#ifdef _WIN32
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#define LK_LOCK _LK_LOCK
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#endif
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#define LK_NBLCK _LK_NBLCK
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#ifdef _WIN32
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#define LK_RLCK _LK_RLCK
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#endif
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#define LK_NBRLCK _LK_NBRLCK
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#endif
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#endif /* _INC_LOCKING */
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