diff options
Diffstat (limited to 'netbsd/NetBSDProcessList.c')
| -rw-r--r-- | netbsd/NetBSDProcessList.c | 504 |
1 files changed, 504 insertions, 0 deletions
diff --git a/netbsd/NetBSDProcessList.c b/netbsd/NetBSDProcessList.c new file mode 100644 index 0000000..197a150 --- /dev/null +++ b/netbsd/NetBSDProcessList.c @@ -0,0 +1,504 @@ +/* +htop - NetBSDProcessList.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 "netbsd/NetBSDProcessList.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 "Macros.h" +#include "Object.h" +#include "Process.h" +#include "ProcessList.h" +#include "Settings.h" +#include "XUtils.h" +#include "netbsd/NetBSDProcess.h" + + +static long fscale; +static int pageSize; +static int pageSizeKB; + +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 NetBSDProcessList_updateCPUcount(ProcessList* super) { + NetBSDProcessList* opl = (NetBSDProcessList*) 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) { + opl->cpuData = xReallocArray(opl->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 = &opl->cpuData[0]; + memset(dAvg, '\0', sizeof(CPUData)); + dAvg->totalTime = 1; + dAvg->totalPeriod = 1; + + for (unsigned int i = 0; i < super->existingCPUs; i++) { + CPUData* d = &opl->cpuData[i + 1]; + memset(d, '\0', sizeof(CPUData)); + d->totalTime = 1; + d->totalPeriod = 1; + } + } +} + +ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* dynamicMeters, Hashtable* dynamicColumns, Hashtable* pidMatchList, uid_t userId) { + const int fmib[] = { CTL_KERN, KERN_FSCALE }; + size_t size; + char errbuf[_POSIX2_LINE_MAX]; + + NetBSDProcessList* npl = xCalloc(1, sizeof(NetBSDProcessList)); + ProcessList* pl = (ProcessList*) npl; + ProcessList_init(pl, Class(NetBSDProcess), usersTable, dynamicMeters, dynamicColumns, pidMatchList, userId); + + NetBSDProcessList_updateCPUcount(pl); + + size = sizeof(fscale); + if (sysctl(fmib, 2, &fscale, &size, NULL, 0) < 0) { + CRT_fatalError("fscale sysctl call failed"); + } + + if ((pageSize = sysconf(_SC_PAGESIZE)) == -1) + CRT_fatalError("pagesize sysconf call failed"); + pageSizeKB = pageSize / ONE_K; + + npl->kd = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf); + if (npl->kd == NULL) { + CRT_fatalError("kvm_openfiles() failed"); + } + + return pl; +} + +void ProcessList_delete(ProcessList* this) { + NetBSDProcessList* npl = (NetBSDProcessList*) this; + + if (npl->kd) { + kvm_close(npl->kd); + } + + free(npl->cpuData); + + ProcessList_done(this); + free(this); +} + +static void NetBSDProcessList_scanMemoryInfo(ProcessList* pl) { + 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"); + } + + pl->totalMem = uvmexp.npages * pageSizeKB; + pl->buffersMem = 0; + pl->cachedMem = (uvmexp.filepages + uvmexp.execpages) * pageSizeKB; + pl->usedMem = (uvmexp.active + uvmexp.wired) * pageSizeKB; + pl->totalSwap = uvmexp.swpages * pageSizeKB; + pl->usedSwap = uvmexp.swpginuse * pageSizeKB; +} + +static void NetBSDProcessList_updateExe(const struct kinfo_proc2* kproc, Process* proc) { + const int mib[] = { CTL_KERN, KERN_PROC_ARGS, kproc->p_pid, KERN_PROC_PATHNAME }; + char buffer[2048]; + size_t size = sizeof(buffer); + if (sysctl(mib, 4, buffer, &size, NULL, 0) != 0) { + Process_updateExe(proc, NULL); + return; + } + + /* Kernel threads return an empty buffer */ + if (buffer[0] == '\0') { + Process_updateExe(proc, NULL); + return; + } + + Process_updateExe(proc, buffer); +} + +static void NetBSDProcessList_updateCwd(const struct kinfo_proc2* kproc, Process* proc) { + const int mib[] = { CTL_KERN, KERN_PROC_ARGS, kproc->p_pid, KERN_PROC_CWD }; + char buffer[2048]; + size_t size = sizeof(buffer); + if (sysctl(mib, 4, buffer, &size, NULL, 0) != 0) { + free(proc->procCwd); + proc->procCwd = NULL; + return; + } + + /* Kernel threads return an empty buffer */ + if (buffer[0] == '\0') { + free(proc->procCwd); + proc->procCwd = NULL; + return; + } + + free_and_xStrdup(&proc->procCwd, buffer); +} + +static void NetBSDProcessList_updateProcessName(kvm_t* kd, const struct kinfo_proc2* kproc, Process* proc) { + Process_updateComm(proc, kproc->p_comm); + + /* + * Like NetBSD's top(1), we try to fall back to the command name + * (argv[0]) if we fail to construct the full command. + */ + char** arg = kvm_getargv2(kd, kproc, 500); + if (arg == NULL || *arg == NULL) { + Process_updateCmdline(proc, kproc->p_comm, 0, strlen(kproc->p_comm)); + return; + } + + size_t len = 0; + for (int i = 0; arg[i] != NULL; i++) { + len += strlen(arg[i]) + 1; /* room for arg and trailing space or NUL */ + } + + /* don't use xMalloc here - we want to handle huge argv's gracefully */ + char* s; + if ((s = malloc(len)) == NULL) { + Process_updateCmdline(proc, kproc->p_comm, 0, strlen(kproc->p_comm)); + return; + } + + *s = '\0'; + + int start = 0; + int end = 0; + for (int i = 0; arg[i] != NULL; i++) { + size_t n = strlcat(s, arg[i], len); + if (i == 0) { + end = MINIMUM(n, len - 1); + /* check if cmdline ended earlier, e.g 'kdeinit5: Running...' */ + for (int j = end; j > 0; j--) { + if (arg[0][j] == ' ' && arg[0][j - 1] != '\\') { + end = (arg[0][j - 1] == ':') ? (j - 1) : j; + } + } + } + /* the trailing space should get truncated anyway */ + strlcat(s, " ", len); + } + + Process_updateCmdline(proc, s, start, end); + + free(s); +} + +/* + * Borrowed with modifications from NetBSD's top(1). + */ +static double getpcpu(const struct kinfo_proc2* kp) { + if (fscale == 0) + return 0.0; + + return 100.0 * (double)kp->p_pctcpu / fscale; +} + +static void NetBSDProcessList_scanProcs(NetBSDProcessList* this) { + const Settings* settings = this->super.settings; + bool hideKernelThreads = settings->hideKernelThreads; + bool hideUserlandThreads = settings->hideUserlandThreads; + int count = 0; + + const struct kinfo_proc2* kprocs = kvm_getproc2(this->kd, KERN_PROC_ALL, 0, sizeof(struct kinfo_proc2), &count); + + for (int i = 0; i < count; i++) { + const struct kinfo_proc2* kproc = &kprocs[i]; + + bool preExisting = false; + Process* proc = ProcessList_getProcess(&this->super, kproc->p_pid, &preExisting, NetBSDProcess_new); + + proc->show = ! ((hideKernelThreads && Process_isKernelThread(proc)) || (hideUserlandThreads && Process_isUserlandThread(proc))); + + if (!preExisting) { + proc->pid = kproc->p_pid; + proc->ppid = kproc->p_ppid; + proc->tpgid = kproc->p_tpgid; + proc->tgid = kproc->p_pid; + proc->session = kproc->p_sid; + proc->pgrp = kproc->p__pgid; + proc->isKernelThread = !!(kproc->p_flag & P_SYSTEM); + proc->isUserlandThread = proc->pid != proc->tgid; + proc->starttime_ctime = kproc->p_ustart_sec; + Process_fillStarttimeBuffer(proc); + ProcessList_add(&this->super, proc); + + proc->tty_nr = kproc->p_tdev; + const char* name = ((dev_t)kproc->p_tdev != KERN_PROC_TTY_NODEV) ? devname(kproc->p_tdev, S_IFCHR) : NULL; + if (!name) { + free(proc->tty_name); + proc->tty_name = NULL; + } else { + free_and_xStrdup(&proc->tty_name, name); + } + + NetBSDProcessList_updateExe(kproc, proc); + NetBSDProcessList_updateProcessName(this->kd, kproc, proc); + } else { + if (settings->updateProcessNames) { + NetBSDProcessList_updateProcessName(this->kd, kproc, proc); + } + } + + if (settings->ss->flags & PROCESS_FLAG_CWD) { + NetBSDProcessList_updateCwd(kproc, proc); + } + + if (proc->st_uid != kproc->p_uid) { + proc->st_uid = kproc->p_uid; + proc->user = UsersTable_getRef(this->super.usersTable, proc->st_uid); + } + + proc->m_virt = kproc->p_vm_vsize; + proc->m_resident = kproc->p_vm_rssize; + + proc->percent_mem = (proc->m_resident * pageSizeKB) / (double)(this->super.totalMem) * 100.0; + proc->percent_cpu = CLAMP(getpcpu(kproc), 0.0, this->super.activeCPUs * 100.0); + Process_updateCPUFieldWidths(proc->percent_cpu); + + proc->nlwp = kproc->p_nlwps; + proc->nice = kproc->p_nice - 20; + proc->time = 100 * (kproc->p_rtime_sec + ((kproc->p_rtime_usec + 500000) / 1000000)); + proc->priority = kproc->p_priority - PZERO; + proc->processor = kproc->p_cpuid; + proc->minflt = kproc->p_uru_minflt; + proc->majflt = kproc->p_uru_majflt; + + int nlwps = 0; + const struct kinfo_lwp* klwps = kvm_getlwps(this->kd, kproc->p_pid, kproc->p_paddr, sizeof(struct kinfo_lwp), &nlwps); + + /* TODO: According to the link below, SDYING should be a regarded state */ + /* Taken from: https://ftp.netbsd.org/pub/NetBSD/NetBSD-current/src/sys/sys/proc.h */ + switch (kproc->p_realstat) { + case SIDL: proc->state = IDLE; break; + case SACTIVE: + // We only consider the first LWP with a one of the below states. + for (int j = 0; j < nlwps; j++) { + if (klwps) { + switch (klwps[j].l_stat) { + case LSONPROC: proc->state = RUNNING; break; + case LSRUN: proc->state = RUNNABLE; break; + case LSSLEEP: proc->state = SLEEPING; break; + case LSSTOP: proc->state = STOPPED; break; + default: proc->state = UNKNOWN; + } + if (proc->state != UNKNOWN) + break; + } else { + proc->state = UNKNOWN; + break; + } + } + break; + case SSTOP: proc->state = STOPPED; break; + case SZOMB: proc->state = ZOMBIE; break; + case SDEAD: proc->state = DEFUNCT; break; + default: proc->state = UNKNOWN; + } + + if (Process_isKernelThread(proc)) { + this->super.kernelThreads++; + } else if (Process_isUserlandThread(proc)) { + this->super.userlandThreads++; + } + + this->super.totalTasks++; + if (proc->state == RUNNING) { + this->super.runningTasks++; + } + proc->updated = true; + } +} + +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 NetBSDProcessList_scanCPUTime(NetBSDProcessList* this) { + u_int64_t kernelTimes[CPUSTATES] = {0}; + u_int64_t avg[CPUSTATES] = {0}; + + for (unsigned int i = 0; i < this->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] /= this->super.activeCPUs; + } + + kernelCPUTimesToHtop(avg, &this->cpuData[0]); +} + +static void NetBSDProcessList_scanCPUFrequency(NetBSDProcessList* this) { + unsigned int cpus = this->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 ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate) { + NetBSDProcessList* npl = (NetBSDProcessList*) super; + + NetBSDProcessList_scanMemoryInfo(super); + NetBSDProcessList_scanCPUTime(npl); + + if (super->settings->showCPUFrequency) { + NetBSDProcessList_scanCPUFrequency(npl); + } + + // in pause mode only gather global data for meters (CPU/memory/...) + if (pauseProcessUpdate) { + return; + } + + NetBSDProcessList_scanProcs(npl); +} + +bool ProcessList_isCPUonline(const ProcessList* super, unsigned int id) { + assert(id < super->existingCPUs); + + // TODO: Support detecting online / offline CPUs. + return true; +} |