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Correct timebase for non-x86 CPUs on Darwin

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Fixes: #368
This commit is contained in:
Benny Baumann
2020-12-12 20:43:08 +01:00
parent e65cdf947c
commit f32f0188cd
4 changed files with 27 additions and 2 deletions
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18
darwin/Platform.c
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@ -6,6 +6,8 @@ Released under the GNU GPLv2, see the COPYING file
in the source distribution for its full text.
*/
#include "config.h" // IWYU pragma: keep
#include "Platform.h"
#include <math.h>
@ -32,6 +34,10 @@ in the source distribution for its full text.
#include "zfs/ZfsArcMeter.h"
#include "zfs/ZfsCompressedArcMeter.h"
#ifdef HAVE_MACH_MACH_TIME_H
#include <mach/mach_time.h>
#endif
ProcessField Platform_defaultFields[] = { PID, USER, PRIORITY, NICE, M_VIRT, M_RESIDENT, STATE, PERCENT_CPU, PERCENT_MEM, TIME, COMM, 0 };
@ -135,8 +141,18 @@ const MeterClass* const Platform_meterTypes[] = {
int Platform_numberOfFields = 100;
double Platform_timebaseToNS = 1.0;
void Platform_init(void) {
/* no platform-specific setup needed */
// Check if we can determine the timebase used on this system.
// If the API is unavailable assume we get our timebase in nanoseconds.
#ifdef HAVE_MACH_TIMEBASE_INFO
mach_timebase_info_data_t info;
mach_timebase_info(&info);
Platform_timebaseToNS = (double)info.numer / (double)info.denom;
#else
Platform_timebaseToNS = 1.0;
#endif
}
void Platform_done(void) {