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-rw-r--r--darwin/PlatformHelpers.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/darwin/PlatformHelpers.c b/darwin/PlatformHelpers.c
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+++ b/darwin/PlatformHelpers.c
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+/*
+htop - darwin/PlatformHelpers.c
+(C) 2018 Pierre Malhaire, 2020-2021 htop dev team, 2021 Alexander Momchilov
+Released under the GNU GPLv2+, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "darwin/PlatformHelpers.h"
+
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/sysctl.h>
+
+#include "CRT.h"
+
+#ifdef HAVE_MACH_MACH_TIME_H
+#include <mach/mach_time.h>
+#endif
+
+
+void Platform_GetKernelVersion(struct kern* k) {
+ static short int version_[3] = {0};
+ if (!version_[0]) {
+ // just in case it fails someday
+ version_[0] = version_[1] = version_[2] = -1;
+ char str[256] = {0};
+ size_t size = sizeof(str);
+ int ret = sysctlbyname("kern.osrelease", str, &size, NULL, 0);
+ if (ret == 0) {
+ sscanf(str, "%hd.%hd.%hd", &version_[0], &version_[1], &version_[2]);
+ }
+ }
+ memcpy(k->version, version_, sizeof(version_));
+}
+
+/* compare the given os version with the one installed returns:
+0 if equals the installed version
+positive value if less than the installed version
+negative value if more than the installed version
+*/
+int Platform_CompareKernelVersion(short int major, short int minor, short int component) {
+ struct kern k;
+ Platform_GetKernelVersion(&k);
+
+ if (k.version[0] != major) {
+ return k.version[0] - major;
+ }
+ if (k.version[1] != minor) {
+ return k.version[1] - minor;
+ }
+ if (k.version[2] != component) {
+ return k.version[2] - component;
+ }
+
+ return 0;
+}
+
+double Platform_calculateNanosecondsPerMachTick() {
+ // 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);
+ return (double)info.numer / (double)info.denom;
+#else
+ return 1.0;
+#endif
+}

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