mirror of https://github.com/xzeldon/htop.git
346 lines
10 KiB
C
346 lines
10 KiB
C
/*
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htop - OpenBSDProcessList.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 "OpenBSDProcessList.h"
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#include <err.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 "OpenBSDProcess.h"
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#include "Process.h"
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#include "ProcessList.h"
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#include "Settings.h"
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#include "XUtils.h"
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static long fscale;
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ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidMatchList, uid_t userId) {
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const int mib[] = { CTL_HW, HW_NCPU };
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const int fmib[] = { CTL_KERN, KERN_FSCALE };
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int r;
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size_t size;
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char errbuf[_POSIX2_LINE_MAX];
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OpenBSDProcessList* opl = xCalloc(1, sizeof(OpenBSDProcessList));
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ProcessList* pl = (ProcessList*) opl;
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ProcessList_init(pl, Class(OpenBSDProcess), usersTable, pidMatchList, userId);
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size = sizeof(pl->cpuCount);
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r = sysctl(mib, 2, &pl->cpuCount, &size, NULL, 0);
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if (r < 0 || pl->cpuCount < 1) {
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pl->cpuCount = 1;
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}
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opl->cpus = xCalloc(pl->cpuCount + 1, sizeof(CPUData));
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size = sizeof(fscale);
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if (sysctl(fmib, 2, &fscale, &size, NULL, 0) < 0) {
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err(1, "fscale sysctl call failed");
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}
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for (int i = 0; i <= pl->cpuCount; i++) {
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CPUData* d = opl->cpus + i;
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d->totalTime = 1;
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d->totalPeriod = 1;
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}
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opl->kd = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf);
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if (opl->kd == NULL) {
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errx(1, "kvm_open: %s", errbuf);
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}
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return pl;
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}
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void ProcessList_delete(ProcessList* this) {
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OpenBSDProcessList* opl = (OpenBSDProcessList*) this;
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if (opl->kd) {
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kvm_close(opl->kd);
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}
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free(opl->cpus);
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ProcessList_done(this);
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free(this);
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}
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static void OpenBSDProcessList_scanMemoryInfo(ProcessList* pl) {
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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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err(1, "uvmexp sysctl call failed");
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}
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pl->totalMem = uvmexp.npages * CRT_pageSizeKB;
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pl->usedMem = (uvmexp.npages - uvmexp.free - uvmexp.paging) * CRT_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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err(1, "cannot get vfs.bcachestat");
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}
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pl->cachedMem = bcstats.numbufpages * CRT_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[nswap];
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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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pl->totalSwap = total;
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pl->usedSwap = used;
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} else {
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pl->totalSwap = pl->usedSwap = 0;
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}
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}
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static char* OpenBSDProcessList_readProcessName(kvm_t* kd, const struct kinfo_proc* kproc, int* basenameEnd) {
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/*
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* Like OpenBSD's top(1), we try to fall back to the command name
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* (argv[0]) if we fail to construct the full command.
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*/
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char** arg = kvm_getargv(kd, kproc, 500);
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if (arg == NULL || *arg == NULL) {
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*basenameEnd = strlen(kproc->p_comm);
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return xStrdup(kproc->p_comm);
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}
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size_t len = 0;
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for (int i = 0; arg[i] != NULL; i++) {
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len += strlen(arg[i]) + 1; /* room for arg and trailing space or NUL */
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}
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/* don't use xMalloc here - we want to handle huge argv's gracefully */
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char* s;
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if ((s = malloc(len)) == NULL) {
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*basenameEnd = strlen(kproc->p_comm);
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return xStrdup(kproc->p_comm);
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}
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*s = '\0';
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for (int i = 0; arg[i] != NULL; i++) {
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size_t n = strlcat(s, arg[i], len);
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if (i == 0) {
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*basenameEnd = MINIMUM(n, len - 1);
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}
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/* the trailing space should get truncated anyway */
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strlcat(s, " ", len);
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}
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return s;
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}
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/*
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* Taken from OpenBSD's ps(1).
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*/
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static double getpcpu(const struct kinfo_proc* kp) {
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if (fscale == 0)
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return 0.0;
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return 100.0 * (double)kp->p_pctcpu / fscale;
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}
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static void OpenBSDProcessList_scanProcs(OpenBSDProcessList* this) {
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const Settings* settings = this->super.settings;
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bool hideKernelThreads = settings->hideKernelThreads;
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bool hideUserlandThreads = settings->hideUserlandThreads;
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int count = 0;
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const struct kinfo_proc* kprocs = kvm_getprocs(this->kd, KERN_PROC_KTHREAD, 0, sizeof(struct kinfo_proc), &count);
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for (int i = 0; i < count; i++) {
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const struct kinfo_proc* kproc = &kprocs[i];
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bool preExisting = false;
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Process* proc = ProcessList_getProcess(&this->super, kproc->p_pid, &preExisting, OpenBSDProcess_new);
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//OpenBSDProcess* fp = (OpenBSDProcess*) proc;
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proc->show = ! ((hideKernelThreads && Process_isKernelThread(proc)) || (hideUserlandThreads && Process_isUserlandThread(proc)));
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if (!preExisting) {
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proc->ppid = kproc->p_ppid;
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proc->tpgid = kproc->p_tpgid;
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proc->tgid = kproc->p_pid;
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proc->session = kproc->p_sid;
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proc->tty_nr = kproc->p_tdev;
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proc->pgrp = kproc->p__pgid;
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proc->st_uid = kproc->p_uid;
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proc->starttime_ctime = kproc->p_ustart_sec;
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Process_fillStarttimeBuffer(proc);
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proc->user = UsersTable_getRef(this->super.usersTable, proc->st_uid);
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ProcessList_add(&this->super, proc);
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proc->comm = OpenBSDProcessList_readProcessName(this->kd, kproc, &proc->basenameOffset);
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} else {
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if (settings->updateProcessNames) {
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free(proc->comm);
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proc->comm = OpenBSDProcessList_readProcessName(this->kd, kproc, &proc->basenameOffset);
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}
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}
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proc->m_virt = kproc->p_vm_dsize;
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proc->m_resident = kproc->p_vm_rssize;
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proc->percent_mem = (proc->m_resident * CRT_pageSizeKB) / (double)(this->super.totalMem) * 100.0;
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proc->percent_cpu = CLAMP(getpcpu(kproc), 0.0, this->super.cpuCount * 100.0);
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//proc->nlwp = kproc->p_numthreads;
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proc->nice = kproc->p_nice - 20;
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proc->time = 100 * (kproc->p_rtime_sec + ((kproc->p_rtime_usec + 500000) / 1000000));
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proc->priority = kproc->p_priority - PZERO;
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switch (kproc->p_stat) {
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case SIDL: proc->state = 'I'; break;
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case SRUN: proc->state = 'R'; break;
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case SSLEEP: proc->state = 'S'; break;
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case SSTOP: proc->state = 'T'; break;
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case SZOMB: proc->state = 'Z'; break;
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case SDEAD: proc->state = 'D'; break;
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case SONPROC: proc->state = 'P'; break;
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default: proc->state = '?';
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}
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if (Process_isKernelThread(proc)) {
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this->super.kernelThreads++;
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}
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this->super.totalTasks++;
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// SRUN ('R') means runnable, not running
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if (proc->state == 'P') {
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this->super.runningTasks++;
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}
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proc->updated = true;
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}
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}
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static unsigned long long saturatingSub(unsigned long long a, unsigned long long b) {
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return a > b ? a - b : 0;
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}
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static void getKernelCPUTimes(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 OpenBSDProcessList_scanCPUTime(OpenBSDProcessList* this) {
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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 (int i = 0; i < this->super.cpuCount; i++) {
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getKernelCPUTimes(i, kernelTimes);
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CPUData* cpu = this->cpus + i + 1;
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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] /= this->super.cpuCount;
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}
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kernelCPUTimesToHtop(avg, this->cpus);
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}
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void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate) {
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OpenBSDProcessList* opl = (OpenBSDProcessList*) super;
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OpenBSDProcessList_scanMemoryInfo(super);
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OpenBSDProcessList_scanCPUTime(opl);
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// in pause mode only gather global data for meters (CPU/memory/...)
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if (pauseProcessUpdate) {
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return;
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}
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OpenBSDProcessList_scanProcs(opl);
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}
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