mirror of https://github.com/htop-dev/htop.git
291 lines
8.0 KiB
C
291 lines
8.0 KiB
C
/*
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htop - OpenBSDMachine.c
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(C) 2014 Hisham H. Muhammad
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(C) 2015 Michael McConville
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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 "config.h" // IWYU pragma: keep
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#include "openbsd/OpenBSDMachine.h"
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#include <kvm.h>
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#include <limits.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/mount.h>
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/sched.h>
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#include <sys/swap.h>
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#include <sys/sysctl.h>
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#include <sys/types.h>
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#include <uvm/uvmexp.h>
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#include "CRT.h"
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#include "Macros.h"
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#include "Object.h"
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#include "Settings.h"
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#include "XUtils.h"
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static void OpenBSDMachine_updateCPUcount(OpenBSDMachine* this) {
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Machine* super = &this->super;
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const int nmib[] = { CTL_HW, HW_NCPU };
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const int mib[] = { CTL_HW, HW_NCPUONLINE };
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int r;
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unsigned int value;
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size_t size;
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bool change = false;
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size = sizeof(value);
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r = sysctl(mib, 2, &value, &size, NULL, 0);
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if (r < 0 || value < 1) {
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value = 1;
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}
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if (value != super->activeCPUs) {
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super->activeCPUs = value;
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change = true;
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}
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size = sizeof(value);
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r = sysctl(nmib, 2, &value, &size, NULL, 0);
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if (r < 0 || value < 1) {
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value = super->activeCPUs;
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}
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if (value != super->existingCPUs) {
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this->cpuData = xReallocArray(this->cpuData, value + 1, sizeof(CPUData));
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super->existingCPUs = value;
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change = true;
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}
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if (change) {
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CPUData* dAvg = &this->cpuData[0];
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memset(dAvg, '\0', sizeof(CPUData));
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dAvg->totalTime = 1;
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dAvg->totalPeriod = 1;
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dAvg->online = true;
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for (unsigned int i = 0; i < super->existingCPUs; i++) {
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CPUData* d = &this->cpuData[i + 1];
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memset(d, '\0', sizeof(CPUData));
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d->totalTime = 1;
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d->totalPeriod = 1;
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const int ncmib[] = { CTL_KERN, KERN_CPUSTATS, i };
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struct cpustats cpu_stats;
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size = sizeof(cpu_stats);
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if (sysctl(ncmib, 3, &cpu_stats, &size, NULL, 0) < 0) {
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CRT_fatalError("ncmib sysctl call failed");
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}
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d->online = (cpu_stats.cs_flags & CPUSTATS_ONLINE);
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}
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}
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}
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Machine* Machine_new(UsersTable* usersTable, uid_t userId) {
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const int fmib[] = { CTL_KERN, KERN_FSCALE };
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size_t size;
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char errbuf[_POSIX2_LINE_MAX];
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OpenBSDMachine* this = xCalloc(1, sizeof(OpenBSDMachine));
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Machine* super = &this->super;
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Machine_init(super, usersTable, userId);
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OpenBSDMachine_updateCPUcount(this);
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size = sizeof(this->fscale);
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if (sysctl(fmib, 2, &this->fscale, &size, NULL, 0) < 0 || this->fscale <= 0) {
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CRT_fatalError("fscale sysctl call failed");
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}
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if ((this->pageSize = sysconf(_SC_PAGESIZE)) == -1)
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CRT_fatalError("pagesize sysconf call failed");
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this->pageSizeKB = this->pageSize / ONE_K;
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this->kd = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf);
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if (this->kd == NULL) {
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CRT_fatalError("kvm_openfiles() failed");
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}
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this->cpuSpeed = -1;
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return super;
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}
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void Machine_delete(Machine* super) {
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OpenBSDMachine* this = (OpenBSDMachine*) super;
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if (this->kd) {
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kvm_close(this->kd);
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}
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free(this->cpuData);
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Machine_done(super);
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free(this);
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}
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static void OpenBSDMachine_scanMemoryInfo(OpenBSDMachine* this) {
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Machine* super = &this->super;
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const int uvmexp_mib[] = { CTL_VM, VM_UVMEXP };
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struct uvmexp uvmexp;
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size_t size_uvmexp = sizeof(uvmexp);
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if (sysctl(uvmexp_mib, 2, &uvmexp, &size_uvmexp, NULL, 0) < 0) {
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CRT_fatalError("uvmexp sysctl call failed");
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}
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super->totalMem = uvmexp.npages * this->pageSizeKB;
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super->usedMem = (uvmexp.npages - uvmexp.free - uvmexp.paging) * this->pageSizeKB;
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// Taken from OpenBSD systat/iostat.c, top/machine.c and uvm_sysctl(9)
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const int bcache_mib[] = { CTL_VFS, VFS_GENERIC, VFS_BCACHESTAT };
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struct bcachestats bcstats;
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size_t size_bcstats = sizeof(bcstats);
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if (sysctl(bcache_mib, 3, &bcstats, &size_bcstats, NULL, 0) < 0) {
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CRT_fatalError("cannot get vfs.bcachestat");
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}
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super->cachedMem = bcstats.numbufpages * this->pageSizeKB;
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/*
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* Copyright (c) 1994 Thorsten Lockert <tholo@sigmasoft.com>
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* All rights reserved.
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*
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* Taken almost directly from OpenBSD's top(1)
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*
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* Originally released under a BSD-3 license
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* Modified through htop developers applying GPL-2
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*/
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int nswap = swapctl(SWAP_NSWAP, 0, 0);
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if (nswap > 0) {
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struct swapent* swdev = xMallocArray(nswap, sizeof(struct swapent));
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int rnswap = swapctl(SWAP_STATS, swdev, nswap);
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/* Total things up */
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unsigned long long int total = 0, used = 0;
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for (int i = 0; i < rnswap; i++) {
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if (swdev[i].se_flags & SWF_ENABLE) {
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used += (swdev[i].se_inuse / (1024 / DEV_BSIZE));
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total += (swdev[i].se_nblks / (1024 / DEV_BSIZE));
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}
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}
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super->totalSwap = total;
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super->usedSwap = used;
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free(swdev);
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} else {
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super->totalSwap = super->usedSwap = 0;
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}
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}
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static void getKernelCPUTimes(unsigned int cpuId, u_int64_t* times) {
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const int mib[] = { CTL_KERN, KERN_CPTIME2, cpuId };
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size_t length = sizeof(*times) * CPUSTATES;
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if (sysctl(mib, 3, times, &length, NULL, 0) == -1 || length != sizeof(*times) * CPUSTATES) {
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CRT_fatalError("sysctl kern.cp_time2 failed");
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}
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}
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static void kernelCPUTimesToHtop(const u_int64_t* times, CPUData* cpu) {
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unsigned long long totalTime = 0;
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for (int i = 0; i < CPUSTATES; i++) {
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totalTime += times[i];
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}
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unsigned long long sysAllTime = times[CP_INTR] + times[CP_SYS];
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// XXX Not sure if CP_SPIN should be added to sysAllTime.
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// See https://github.com/openbsd/src/commit/531d8034253fb82282f0f353c086e9ad827e031c
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#ifdef CP_SPIN
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sysAllTime += times[CP_SPIN];
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#endif
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cpu->totalPeriod = saturatingSub(totalTime, cpu->totalTime);
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cpu->userPeriod = saturatingSub(times[CP_USER], cpu->userTime);
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cpu->nicePeriod = saturatingSub(times[CP_NICE], cpu->niceTime);
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cpu->sysPeriod = saturatingSub(times[CP_SYS], cpu->sysTime);
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cpu->sysAllPeriod = saturatingSub(sysAllTime, cpu->sysAllTime);
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#ifdef CP_SPIN
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cpu->spinPeriod = saturatingSub(times[CP_SPIN], cpu->spinTime);
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#endif
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cpu->intrPeriod = saturatingSub(times[CP_INTR], cpu->intrTime);
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cpu->idlePeriod = saturatingSub(times[CP_IDLE], cpu->idleTime);
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cpu->totalTime = totalTime;
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cpu->userTime = times[CP_USER];
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cpu->niceTime = times[CP_NICE];
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cpu->sysTime = times[CP_SYS];
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cpu->sysAllTime = sysAllTime;
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#ifdef CP_SPIN
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cpu->spinTime = times[CP_SPIN];
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#endif
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cpu->intrTime = times[CP_INTR];
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cpu->idleTime = times[CP_IDLE];
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}
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static void OpenBSDMachine_scanCPUTime(OpenBSDMachine* this) {
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Machine* super = &this->super;
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u_int64_t kernelTimes[CPUSTATES] = {0};
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u_int64_t avg[CPUSTATES] = {0};
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for (unsigned int i = 0; i < super->existingCPUs; i++) {
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CPUData* cpu = &this->cpuData[i + 1];
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if (!cpu->online) {
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continue;
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}
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getKernelCPUTimes(i, kernelTimes);
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kernelCPUTimesToHtop(kernelTimes, cpu);
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avg[CP_USER] += cpu->userTime;
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avg[CP_NICE] += cpu->niceTime;
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avg[CP_SYS] += cpu->sysTime;
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#ifdef CP_SPIN
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avg[CP_SPIN] += cpu->spinTime;
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#endif
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avg[CP_INTR] += cpu->intrTime;
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avg[CP_IDLE] += cpu->idleTime;
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}
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for (int i = 0; i < CPUSTATES; i++) {
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avg[i] /= super->activeCPUs;
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}
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kernelCPUTimesToHtop(avg, &this->cpuData[0]);
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{
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const int mib[] = { CTL_HW, HW_CPUSPEED };
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int cpuSpeed;
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size_t size = sizeof(cpuSpeed);
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if (sysctl(mib, 2, &cpuSpeed, &size, NULL, 0) == -1) {
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this->cpuSpeed = -1;
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} else {
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this->cpuSpeed = cpuSpeed;
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}
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}
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}
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void Machine_scan(Machine* super) {
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OpenBSDMachine* this = (OpenBSDMachine*) super;
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OpenBSDMachine_updateCPUcount(this);
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OpenBSDMachine_scanMemoryInfo(this);
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OpenBSDMachine_scanCPUTime(this);
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}
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bool Machine_isCPUonline(const Machine* super, unsigned int id) {
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assert(id < super->existingCPUs);
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const OpenBSDMachine* this = (const OpenBSDMachine*) super;
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return this->cpuData[id + 1].online;
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}
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