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-rw-r--r--netbsd/NetBSDMachine.c285
1 files changed, 285 insertions, 0 deletions
diff --git a/netbsd/NetBSDMachine.c b/netbsd/NetBSDMachine.c
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+++ b/netbsd/NetBSDMachine.c
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+/*
+htop - NetBSDMachine.c
+(C) 2014 Hisham H. Muhammad
+(C) 2015 Michael McConville
+(C) 2021 Santhosh Raju
+(C) 2021 htop dev team
+Released under the GNU GPLv2+, see the COPYING file
+in the source distribution for its full text.
+*/
+
+#include "config.h" // IWYU pragma: keep
+
+#include "netbsd/NetBSDMachine.h"
+
+#include <kvm.h>
+#include <math.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/mount.h>
+#include <sys/param.h>
+#include <sys/proc.h>
+#include <sys/sched.h>
+#include <sys/swap.h>
+#include <sys/sysctl.h>
+#include <sys/types.h>
+#include <uvm/uvm_extern.h>
+
+#include "CRT.h"
+#include "Machine.h"
+#include "Macros.h"
+#include "Object.h"
+#include "Settings.h"
+#include "XUtils.h"
+
+
+static const struct {
+ const char* name;
+ long int scale;
+} freqSysctls[] = {
+ { "machdep.est.frequency.current", 1 },
+ { "machdep.powernow.frequency.current", 1 },
+ { "machdep.intrepid.frequency.current", 1 },
+ { "machdep.loongson.frequency.current", 1 },
+ { "machdep.cpu.frequency.current", 1 },
+ { "machdep.frequency.current", 1 },
+ { "machdep.tsc_freq", 1000000 },
+};
+
+static void NetBSDMachine_updateCPUcount(NetBSDMachine* this) {
+ Machine* super = &this->super;
+
+ // Definitions for sysctl(3), cf. https://nxr.netbsd.org/xref/src/sys/sys/sysctl.h#813
+ const int mib_ncpu_existing[] = { CTL_HW, HW_NCPU }; // Number of existing CPUs
+ const int mib_ncpu_online[] = { CTL_HW, HW_NCPUONLINE }; // Number of online/active CPUs
+
+ int r;
+ unsigned int value;
+ size_t size;
+
+ bool change = false;
+
+ // Query the number of active/online CPUs.
+ size = sizeof(value);
+ r = sysctl(mib_ncpu_online, 2, &value, &size, NULL, 0);
+ if (r < 0 || value < 1) {
+ value = 1;
+ }
+
+ if (value != super->activeCPUs) {
+ super->activeCPUs = value;
+ change = true;
+ }
+
+ // Query the total number of CPUs.
+ size = sizeof(value);
+ r = sysctl(mib_ncpu_existing, 2, &value, &size, NULL, 0);
+ if (r < 0 || value < 1) {
+ value = super->activeCPUs;
+ }
+
+ if (value != super->existingCPUs) {
+ this->cpuData = xReallocArray(this->cpuData, value + 1, sizeof(CPUData));
+ super->existingCPUs = value;
+ change = true;
+ }
+
+ // Reset CPU stats when number of online/existing CPU cores changed
+ if (change) {
+ CPUData* dAvg = &this->cpuData[0];
+ memset(dAvg, '\0', sizeof(CPUData));
+ dAvg->totalTime = 1;
+ dAvg->totalPeriod = 1;
+
+ for (unsigned int i = 0; i < super->existingCPUs; i++) {
+ CPUData* d = &this->cpuData[i + 1];
+ memset(d, '\0', sizeof(CPUData));
+ d->totalTime = 1;
+ d->totalPeriod = 1;
+ }
+ }
+}
+
+Machine* Machine_new(UsersTable* usersTable, uid_t userId) {
+ const int fmib[] = { CTL_KERN, KERN_FSCALE };
+ size_t size;
+ char errbuf[_POSIX2_LINE_MAX];
+
+ NetBSDMachine* this = xCalloc(1, sizeof(NetBSDMachine));
+ Machine* super = &this->super;
+ Machine_init(super, usersTable, userId);
+
+ NetBSDMachine_updateCPUcount(this);
+
+ size = sizeof(this->fscale);
+ if (sysctl(fmib, 2, &this->fscale, &size, NULL, 0) < 0 || this->fscale <= 0) {
+ CRT_fatalError("fscale sysctl call failed");
+ }
+
+ if ((this->pageSize = sysconf(_SC_PAGESIZE)) == -1)
+ CRT_fatalError("pagesize sysconf call failed");
+ this->pageSizeKB = this->pageSize / ONE_K;
+
+ this->kd = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf);
+ if (this->kd == NULL) {
+ CRT_fatalError("kvm_openfiles() failed");
+ }
+
+ return super;
+}
+
+void Machine_delete(Machine* super) {
+ NetBSDMachine* this = (NetBSDMachine*) super;
+
+ Machine_done(super);
+
+ if (this->kd) {
+ kvm_close(this->kd);
+ }
+ free(this->cpuData);
+ free(this);
+}
+
+static void NetBSDMachine_scanMemoryInfo(NetBSDMachine* this) {
+ Machine* super = &this->super;
+
+ static int uvmexp_mib[] = {CTL_VM, VM_UVMEXP2};
+ struct uvmexp_sysctl uvmexp;
+ size_t size_uvmexp = sizeof(uvmexp);
+
+ if (sysctl(uvmexp_mib, 2, &uvmexp, &size_uvmexp, NULL, 0) < 0) {
+ CRT_fatalError("uvmexp sysctl call failed");
+ }
+
+ super->totalMem = uvmexp.npages * this->pageSizeKB;
+ super->buffersMem = 0;
+ super->cachedMem = (uvmexp.filepages + uvmexp.execpages) * this->pageSizeKB;
+ super->usedMem = (uvmexp.active + uvmexp.wired) * this->pageSizeKB;
+ super->totalSwap = uvmexp.swpages * this->pageSizeKB;
+ super->usedSwap = uvmexp.swpginuse * this->pageSizeKB;
+}
+
+static void getKernelCPUTimes(int cpuId, u_int64_t* times) {
+ const int mib[] = { CTL_KERN, KERN_CP_TIME, cpuId };
+ size_t length = sizeof(*times) * CPUSTATES;
+ if (sysctl(mib, 3, times, &length, NULL, 0) == -1 || length != sizeof(*times) * CPUSTATES) {
+ CRT_fatalError("sysctl kern.cp_time2 failed");
+ }
+}
+
+static void kernelCPUTimesToHtop(const u_int64_t* times, CPUData* cpu) {
+ unsigned long long totalTime = 0;
+ for (int i = 0; i < CPUSTATES; i++) {
+ totalTime += times[i];
+ }
+
+ unsigned long long sysAllTime = times[CP_INTR] + times[CP_SYS];
+
+ cpu->totalPeriod = saturatingSub(totalTime, cpu->totalTime);
+ cpu->userPeriod = saturatingSub(times[CP_USER], cpu->userTime);
+ cpu->nicePeriod = saturatingSub(times[CP_NICE], cpu->niceTime);
+ cpu->sysPeriod = saturatingSub(times[CP_SYS], cpu->sysTime);
+ cpu->sysAllPeriod = saturatingSub(sysAllTime, cpu->sysAllTime);
+ cpu->intrPeriod = saturatingSub(times[CP_INTR], cpu->intrTime);
+ cpu->idlePeriod = saturatingSub(times[CP_IDLE], cpu->idleTime);
+
+ cpu->totalTime = totalTime;
+ cpu->userTime = times[CP_USER];
+ cpu->niceTime = times[CP_NICE];
+ cpu->sysTime = times[CP_SYS];
+ cpu->sysAllTime = sysAllTime;
+ cpu->intrTime = times[CP_INTR];
+ cpu->idleTime = times[CP_IDLE];
+}
+
+static void NetBSDMachine_scanCPUTime(NetBSDMachine* this) {
+ const Machine* super = &this->super;
+
+ u_int64_t kernelTimes[CPUSTATES] = {0};
+ u_int64_t avg[CPUSTATES] = {0};
+
+ for (unsigned int i = 0; i < super->existingCPUs; i++) {
+ getKernelCPUTimes(i, kernelTimes);
+ CPUData* cpu = &this->cpuData[i + 1];
+ kernelCPUTimesToHtop(kernelTimes, cpu);
+
+ avg[CP_USER] += cpu->userTime;
+ avg[CP_NICE] += cpu->niceTime;
+ avg[CP_SYS] += cpu->sysTime;
+ avg[CP_INTR] += cpu->intrTime;
+ avg[CP_IDLE] += cpu->idleTime;
+ }
+
+ for (int i = 0; i < CPUSTATES; i++) {
+ avg[i] /= super->activeCPUs;
+ }
+
+ kernelCPUTimesToHtop(avg, &this->cpuData[0]);
+}
+
+static void NetBSDMachine_scanCPUFrequency(NetBSDMachine* this) {
+ const Machine* super = &this->super;
+ unsigned int cpus = super->existingCPUs;
+ bool match = false;
+ char name[64];
+ long int freq = 0;
+ size_t freqSize;
+
+ for (unsigned int i = 0; i < cpus; i++) {
+ this->cpuData[i + 1].frequency = NAN;
+ }
+
+ /* newer hardware supports per-core frequency, for e.g. ARM big.LITTLE */
+ for (unsigned int i = 0; i < cpus; i++) {
+ xSnprintf(name, sizeof(name), "machdep.cpufreq.cpu%u.current", i);
+ freqSize = sizeof(freq);
+ if (sysctlbyname(name, &freq, &freqSize, NULL, 0) != -1) {
+ this->cpuData[i + 1].frequency = freq; /* already in MHz */
+ match = true;
+ }
+ }
+
+ if (match) {
+ return;
+ }
+
+ /*
+ * Iterate through legacy sysctl nodes for single-core frequency until
+ * we find a match...
+ */
+ for (size_t i = 0; i < ARRAYSIZE(freqSysctls); i++) {
+ freqSize = sizeof(freq);
+ if (sysctlbyname(freqSysctls[i].name, &freq, &freqSize, NULL, 0) != -1) {
+ freq /= freqSysctls[i].scale; /* scale to MHz */
+ match = true;
+ break;
+ }
+ }
+
+ if (match) {
+ for (unsigned int i = 0; i < cpus; i++) {
+ this->cpuData[i + 1].frequency = freq;
+ }
+ }
+}
+
+void Machine_scan(Machine* super) {
+ NetBSDMachine* this = (NetBSDMachine*) super;
+
+ NetBSDMachine_scanMemoryInfo(this);
+ NetBSDMachine_scanCPUTime(this);
+
+ if (super->settings->showCPUFrequency) {
+ NetBSDMachine_scanCPUFrequency(this);
+ }
+}
+
+bool Machine_isCPUonline(const Machine* host, unsigned int id) {
+ assert(id < host->existingCPUs);
+ (void)host; (void)id;
+
+ // TODO: Support detecting online / offline CPUs.
+ return true;
+}