mirror of https://github.com/xzeldon/htop.git
71 lines
1.8 KiB
C
71 lines
1.8 KiB
C
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/*
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htop - darwin/PlatformHelpers.c
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(C) 2018 Pierre Malhaire, 2020-2021 htop dev team, 2021 Alexander Momchilov
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Released under the GNU GPLv2+, see the COPYING file
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in the source distribution for its full text.
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*/
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#include "darwin/PlatformHelpers.h"
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#include <errno.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/sysctl.h>
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#include "CRT.h"
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#ifdef HAVE_MACH_MACH_TIME_H
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#include <mach/mach_time.h>
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#endif
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void Platform_GetKernelVersion(struct kern* k) {
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static short int version_[3] = {0};
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if (!version_[0]) {
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// just in case it fails someday
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version_[0] = version_[1] = version_[2] = -1;
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char str[256] = {0};
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size_t size = sizeof(str);
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int ret = sysctlbyname("kern.osrelease", str, &size, NULL, 0);
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if (ret == 0) {
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sscanf(str, "%hd.%hd.%hd", &version_[0], &version_[1], &version_[2]);
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}
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}
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memcpy(k->version, version_, sizeof(version_));
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}
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/* compare the given os version with the one installed returns:
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0 if equals the installed version
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positive value if less than the installed version
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negative value if more than the installed version
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*/
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int Platform_CompareKernelVersion(short int major, short int minor, short int component) {
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struct kern k;
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Platform_GetKernelVersion(&k);
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if (k.version[0] != major) {
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return k.version[0] - major;
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}
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if (k.version[1] != minor) {
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return k.version[1] - minor;
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}
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if (k.version[2] != component) {
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return k.version[2] - component;
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}
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return 0;
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}
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double Platform_calculateNanosecondsPerMachTick() {
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// Check if we can determine the timebase used on this system.
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// If the API is unavailable assume we get our timebase in nanoseconds.
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#ifdef HAVE_MACH_TIMEBASE_INFO
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mach_timebase_info_data_t info;
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mach_timebase_info(&info);
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return (double)info.numer / (double)info.denom;
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#else
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return 1.0;
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#endif
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}
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