forked from Imagelibrary/rtems
bdbf1ffa6e
Newlib uses _times_r() in clock(). The problem is that the _times_r() clock frequency is defined by sysconf(_SC_CLK_TCK). The clock frequency of clock() is the constant CLOCKS_PER_SEC. FreeBSD uses getrusage() for clock(). Since RTEMS has only one process, the implementation can be simplified. Update #3121.
34 lines
695 B
C
34 lines
695 B
C
/*
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* Copyright (c) 2017 embedded brains GmbH. All rights reserved.
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*
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* embedded brains GmbH
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* Dornierstr. 4
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* 82178 Puchheim
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* Germany
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* <rtems@embedded-brains.de>
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.org/license/LICENSE.
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <time.h>
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#include <rtems/score/basedefs.h>
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#include <rtems/score/timecounter.h>
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RTEMS_STATIC_ASSERT( CLOCKS_PER_SEC == 1000000, clocks_per_sec );
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clock_t clock( void )
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{
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struct timeval tv;
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_Timecounter_Microuptime( &tv );
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return (clock_t) (tv.tv_sec - 1) * CLOCKS_PER_SEC + tv.tv_usec;
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}
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