68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
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/*
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* Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* Copyright (c) 1999-2008 Apple Inc. All Rights Reserved.
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*/
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/*
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*
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* History:
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* 08-Feb-1999 Umesh Vaishampayan (umeshv@apple.com)
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* Added scaledtimestamp().
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*
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* 26-Oct-1998 Umesh Vaishampayan (umeshv@apple.com)
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* Made the header c++ friendly.
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*
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* 23-Oct-1998 Umesh Vaishampayan (umeshv@apple.com)
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* Created.
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*/
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#ifndef _TIMESTAMP_H_
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#define _TIMESTAMP_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "OSHeaders.h"
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/* Get a 64 bit timestamp */
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extern SInt64 timestamp(void);
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struct timescale {
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SInt64 tsc_numerator;
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SInt64 tsc_denominator;
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};
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/*
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* Get numerator and denominator to convert value returned
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* by timestamp() to microseconds
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*/
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extern void utimescale(struct timescale *tscp);
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extern SInt64 scaledtimestamp(double scale);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _TIMESTAMP_H_ */
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