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#include "detection/cpuusage/cpuusage.h"
#include "common/mallocHelper.h"
#include <sys/types.h>
#include <sys/sysctl.h>
#include <sys/resource.h>
#include <stdlib.h>
#if __OpenBSD__ || __NetBSD__
#include <sys/sched.h>
#endif
const char* ffGetCpuUsageInfo(FFlist* cpuTimes) {
size_t neededLength = 0;
#if __OpenBSD__ || __NetBSD__
#ifdef KERN_CPTIME
int ctls[] = { CTL_KERN, KERN_CPTIME };
#else
int ctls[] = { CTL_KERN, KERN_CP_TIME };
#endif
if (sysctl(ctls, 2, NULL, &neededLength, NULL, 0) != 0) {
return "sysctl({CTL_KERN, KERN_CPTIME}, 2, NULL) failed";
}
#else
if (sysctlbyname("kern.cp_times", NULL, &neededLength, NULL, 0) != 0) {
return "sysctlbyname(kern.cp_times, NULL) failed";
}
#endif
uint32_t coreCount = (uint32_t) (neededLength / (CPUSTATES * sizeof(uint64_t)));
assert(coreCount > 0);
FF_AUTO_FREE uint64_t (*cpTimes)[CPUSTATES] = malloc(neededLength);
#if __OpenBSD__ || __NetBSD__
if (sysctl(ctls, 2, cpTimes, &neededLength, NULL, 0) != 0) {
return "sysctl({CTL_KERN, KERN_CPTIME}, 2, NULL) failed";
}
#else
if (sysctlbyname("kern.cp_times", cpTimes, &neededLength, NULL, 0) != 0) {
return "sysctlbyname(kern.cp_times, cpTime) failed";
}
#endif
for (uint32_t i = 0; i < coreCount; ++i) {
uint64_t* cpTime = cpTimes[i];
uint64_t inUse = cpTime[CP_USER] + cpTime[CP_NICE] + cpTime[CP_SYS] + cpTime[CP_INTR];
uint64_t total = inUse + cpTime[CP_IDLE];
FFCpuUsageInfo* info = FF_LIST_ADD(FFCpuUsageInfo, *cpuTimes);
*info = (FFCpuUsageInfo) {
.inUseAll = inUse,
.totalAll = total,
};
}
return NULL;
}
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