65b04f295a
timers might natively return nanoseconds instead of microseconds, as is the case on x86. Fixes an issue with really high shared memory latencies on Intel macs This commit was SVN r13038.
71 строка
2.0 KiB
C
71 строка
2.0 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* 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 (c) 2007 Los Alamos National Security, LLC. All rights
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* 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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#include "opal_config.h"
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#include <mach/mach_time.h>
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#include "opal/mca/timer/timer.h"
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#include "opal/mca/timer/darwin/timer_darwin.h"
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#include "opal/constants.h"
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opal_timer_t opal_timer_darwin_freq;
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static int opal_timer_darwin_open(void);
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const opal_timer_base_component_1_0_0_t mca_timer_darwin_component = {
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/* First, the mca_component_t struct containing meta information
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about the component itself */
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{
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/* Indicate that we are a timer v1.0.0 component (which also
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implies a specific MCA version) */
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OPAL_TIMER_BASE_VERSION_1_0_0,
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/* Component name and version */
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"darwin",
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OPAL_MAJOR_VERSION,
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OPAL_MINOR_VERSION,
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OPAL_RELEASE_VERSION,
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/* Component open and close functions */
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opal_timer_darwin_open,
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NULL
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},
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/* Next the MCA v1.0.0 component meta data */
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{
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/* Whether the component is checkpointable or not */
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true
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},
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};
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int opal_timer_darwin_open(void)
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{
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mach_timebase_info_data_t sTBI;
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mach_timebase_info(&sTBI);
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opal_timer_darwin_freq = sTBI.denom * (1000000000 / sTBI.numer);
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return OPAL_SUCCESS;
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}
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