59 строки
1.5 KiB
C
59 строки
1.5 KiB
C
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/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University.
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* All rights reserved.
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* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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* All rights reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#ifndef OPAL_MCA_TIMER_DARWIN_TIMER_DARWIN_H
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#define OPAL_MCA_TIMER_DARWIN_TIMER_DARWIN_H
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#include <mach/mach_time.h>
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typedef uint64_t opal_timer_t;
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/* frequency in mhz */
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extern opal_timer_t opal_timer_darwin_freq;
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static inline opal_timer_t
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opal_timer_base_get_cycles(void)
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{
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/* this is basically a wrapper around the "right" assembly to get
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the tick counter off the PowerPC Time Base. I believe it's
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something similar on x86 */
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return mach_absolute_time();
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}
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static inline opal_timer_t
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opal_timer_base_get_usec(void)
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{
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/* freq is in Hz, so this gives usec */
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return mach_absolute_time() * 1000000 / opal_timer_darwin_freq;
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}
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static inline opal_timer_t
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opal_timer_base_get_freq(void)
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{
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return opal_timer_darwin_freq;
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}
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#define OPAL_TIMER_CYCLE_NATIVE 1
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#define OPAL_TIMER_CYCLE_SUPPORTED 1
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#define OPAL_TIMER_USEC_NATIVE 0
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#define OPAL_TIMER_USEC_SUPPORTED 1
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#endif
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