mirror of https://github.com/xzeldon/htop.git
598 lines
19 KiB
C
598 lines
19 KiB
C
/*
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htop - FreeBSDProcessList.c
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(C) 2014 Hisham H. Muhammad
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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 "FreeBSDProcessList.h"
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#include <assert.h>
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#include <dirent.h>
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#include <err.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 <sys/_iovec.h>
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#include <sys/dirent.h>
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#include <sys/errno.h>
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#include <sys/param.h> // needs to be included before <sys/jail.h> for MAXPATHLEN
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#include <sys/jail.h>
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#include <sys/priority.h>
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#include <sys/proc.h>
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#include <sys/resource.h>
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#include <sys/stat.h>
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#include <sys/sysctl.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/user.h>
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#include "CRT.h"
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#include "Compat.h"
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#include "FreeBSDProcess.h"
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#include "Macros.h"
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#include "Object.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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#include "zfs/ZfsArcStats.h"
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#include "zfs/openzfs_sysctl.h"
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char jail_errmsg[JAIL_ERRMSGLEN];
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static int MIB_hw_physmem[2];
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static int MIB_vm_stats_vm_v_page_count[4];
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static int pageSize;
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static int pageSizeKb;
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static int MIB_vm_stats_vm_v_wire_count[4];
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static int MIB_vm_stats_vm_v_active_count[4];
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static int MIB_vm_stats_vm_v_cache_count[4];
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static int MIB_vm_stats_vm_v_inactive_count[4];
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static int MIB_vm_stats_vm_v_free_count[4];
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static int MIB_vfs_bufspace[2];
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static int MIB_kern_cp_time[2];
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static int MIB_kern_cp_times[2];
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static int kernelFScale;
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ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidMatchList, uid_t userId) {
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size_t len;
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char errbuf[_POSIX2_LINE_MAX];
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FreeBSDProcessList* fpl = xCalloc(1, sizeof(FreeBSDProcessList));
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ProcessList* pl = (ProcessList*) fpl;
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ProcessList_init(pl, Class(FreeBSDProcess), usersTable, pidMatchList, userId);
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// physical memory in system: hw.physmem
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// physical page size: hw.pagesize
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// usable pagesize : vm.stats.vm.v_page_size
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len = 2; sysctlnametomib("hw.physmem", MIB_hw_physmem, &len);
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len = sizeof(pageSize);
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if (sysctlbyname("vm.stats.vm.v_page_size", &pageSize, &len, NULL, 0) == -1) {
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pageSize = CRT_pageSize;
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pageSizeKb = CRT_pageSize;
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} else {
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pageSizeKb = pageSize / ONE_K;
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}
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// usable page count vm.stats.vm.v_page_count
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// actually usable memory : vm.stats.vm.v_page_count * vm.stats.vm.v_page_size
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len = 4; sysctlnametomib("vm.stats.vm.v_page_count", MIB_vm_stats_vm_v_page_count, &len);
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len = 4; sysctlnametomib("vm.stats.vm.v_wire_count", MIB_vm_stats_vm_v_wire_count, &len);
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len = 4; sysctlnametomib("vm.stats.vm.v_active_count", MIB_vm_stats_vm_v_active_count, &len);
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len = 4; sysctlnametomib("vm.stats.vm.v_cache_count", MIB_vm_stats_vm_v_cache_count, &len);
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len = 4; sysctlnametomib("vm.stats.vm.v_inactive_count", MIB_vm_stats_vm_v_inactive_count, &len);
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len = 4; sysctlnametomib("vm.stats.vm.v_free_count", MIB_vm_stats_vm_v_free_count, &len);
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len = 2; sysctlnametomib("vfs.bufspace", MIB_vfs_bufspace, &len);
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openzfs_sysctl_init(&fpl->zfs);
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openzfs_sysctl_updateArcStats(&fpl->zfs);
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int smp = 0;
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len = sizeof(smp);
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if (sysctlbyname("kern.smp.active", &smp, &len, NULL, 0) != 0 || len != sizeof(smp)) {
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smp = 0;
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}
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int cpus = 1;
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len = sizeof(cpus);
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if (smp) {
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int err = sysctlbyname("kern.smp.cpus", &cpus, &len, NULL, 0);
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if (err) {
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cpus = 1;
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}
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} else {
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cpus = 1;
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}
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size_t sizeof_cp_time_array = sizeof(unsigned long) * CPUSTATES;
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len = 2; sysctlnametomib("kern.cp_time", MIB_kern_cp_time, &len);
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fpl->cp_time_o = xCalloc(cpus, sizeof_cp_time_array);
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fpl->cp_time_n = xCalloc(cpus, sizeof_cp_time_array);
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len = sizeof_cp_time_array;
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// fetch initial single (or average) CPU clicks from kernel
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sysctl(MIB_kern_cp_time, 2, fpl->cp_time_o, &len, NULL, 0);
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// on smp box, fetch rest of initial CPU's clicks
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if (cpus > 1) {
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len = 2; sysctlnametomib("kern.cp_times", MIB_kern_cp_times, &len);
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fpl->cp_times_o = xCalloc(cpus, sizeof_cp_time_array);
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fpl->cp_times_n = xCalloc(cpus, sizeof_cp_time_array);
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len = cpus * sizeof_cp_time_array;
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sysctl(MIB_kern_cp_times, 2, fpl->cp_times_o, &len, NULL, 0);
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}
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pl->cpuCount = MAXIMUM(cpus, 1);
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if (cpus == 1 ) {
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fpl->cpus = xRealloc(fpl->cpus, sizeof(CPUData));
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} else {
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// on smp we need CPUs + 1 to store averages too (as kernel kindly provides that as well)
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fpl->cpus = xRealloc(fpl->cpus, (pl->cpuCount + 1) * sizeof(CPUData));
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}
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len = sizeof(kernelFScale);
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if (sysctlbyname("kern.fscale", &kernelFScale, &len, NULL, 0) == -1) {
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//sane default for kernel provided CPU percentage scaling, at least on x86 machines, in case this sysctl call failed
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kernelFScale = 2048;
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}
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fpl->kd = kvm_openfiles(NULL, "/dev/null", NULL, 0, errbuf);
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if (fpl->kd == NULL) {
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errx(1, "kvm_open: %s", errbuf);
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}
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fpl->ttys = Hashtable_new(20, true);
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return pl;
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}
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void ProcessList_delete(ProcessList* this) {
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const FreeBSDProcessList* fpl = (FreeBSDProcessList*) this;
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Hashtable_delete(fpl->ttys);
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if (fpl->kd) {
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kvm_close(fpl->kd);
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}
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free(fpl->cp_time_o);
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free(fpl->cp_time_n);
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free(fpl->cp_times_o);
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free(fpl->cp_times_n);
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free(fpl->cpus);
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ProcessList_done(this);
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free(this);
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}
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static inline void FreeBSDProcessList_scanCPUTime(ProcessList* pl) {
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const FreeBSDProcessList* fpl = (FreeBSDProcessList*) pl;
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int cpus = pl->cpuCount; // actual CPU count
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int maxcpu = cpus; // max iteration (in case we have average + smp)
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int cp_times_offset;
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assert(cpus > 0);
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size_t sizeof_cp_time_array;
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unsigned long* cp_time_n; // old clicks state
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unsigned long* cp_time_o; // current clicks state
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unsigned long cp_time_d[CPUSTATES];
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double cp_time_p[CPUSTATES];
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// get averages or single CPU clicks
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sizeof_cp_time_array = sizeof(unsigned long) * CPUSTATES;
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sysctl(MIB_kern_cp_time, 2, fpl->cp_time_n, &sizeof_cp_time_array, NULL, 0);
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// get rest of CPUs
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if (cpus > 1) {
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// on smp systems FreeBSD kernel concats all CPU states into one long array in
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// kern.cp_times sysctl OID
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// we store averages in fpl->cpus[0], and actual cores after that
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maxcpu = cpus + 1;
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sizeof_cp_time_array = cpus * sizeof(unsigned long) * CPUSTATES;
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sysctl(MIB_kern_cp_times, 2, fpl->cp_times_n, &sizeof_cp_time_array, NULL, 0);
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}
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for (int i = 0; i < maxcpu; i++) {
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if (cpus == 1) {
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// single CPU box
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cp_time_n = fpl->cp_time_n;
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cp_time_o = fpl->cp_time_o;
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} else {
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if (i == 0 ) {
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// average
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cp_time_n = fpl->cp_time_n;
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cp_time_o = fpl->cp_time_o;
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} else {
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// specific smp cores
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cp_times_offset = i - 1;
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cp_time_n = fpl->cp_times_n + (cp_times_offset * CPUSTATES);
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cp_time_o = fpl->cp_times_o + (cp_times_offset * CPUSTATES);
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}
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}
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// diff old vs new
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unsigned long long total_o = 0;
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unsigned long long total_n = 0;
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unsigned long long total_d = 0;
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for (int s = 0; s < CPUSTATES; s++) {
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cp_time_d[s] = cp_time_n[s] - cp_time_o[s];
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total_o += cp_time_o[s];
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total_n += cp_time_n[s];
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}
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// totals
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total_d = total_n - total_o;
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if (total_d < 1 ) {
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total_d = 1;
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}
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// save current state as old and calc percentages
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for (int s = 0; s < CPUSTATES; ++s) {
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cp_time_o[s] = cp_time_n[s];
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cp_time_p[s] = ((double)cp_time_d[s]) / ((double)total_d) * 100;
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}
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CPUData* cpuData = &(fpl->cpus[i]);
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cpuData->userPercent = cp_time_p[CP_USER];
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cpuData->nicePercent = cp_time_p[CP_NICE];
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cpuData->systemPercent = cp_time_p[CP_SYS];
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cpuData->irqPercent = cp_time_p[CP_INTR];
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cpuData->systemAllPercent = cp_time_p[CP_SYS] + cp_time_p[CP_INTR];
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// this one is not really used, but we store it anyway
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cpuData->idlePercent = cp_time_p[CP_IDLE];
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}
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}
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static inline void FreeBSDProcessList_scanMemoryInfo(ProcessList* pl) {
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FreeBSDProcessList* fpl = (FreeBSDProcessList*) pl;
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// @etosan:
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// memory counter relationships seem to be these:
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// total = active + wired + inactive + cache + free
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// htop_used (unavail to anybody) = active + wired
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// htop_cache (for cache meter) = buffers + cache
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// user_free (avail to procs) = buffers + inactive + cache + free
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//
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// with ZFS ARC situation becomes bit muddled, as ARC behaves like "user_free"
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// and belongs into cache, but is reported as wired by kernel
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//
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// htop_used = active + (wired - arc)
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// htop_cache = buffers + cache + arc
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u_long totalMem;
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u_int memActive, memWire, cachedMem;
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long buffersMem;
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size_t len;
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//disabled for now, as it is always smaller than phycal amount of memory...
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//...to avoid "where is my memory?" questions
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//sysctl(MIB_vm_stats_vm_v_page_count, 4, &(pl->totalMem), &len, NULL, 0);
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//pl->totalMem *= pageSizeKb;
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len = sizeof(totalMem);
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sysctl(MIB_hw_physmem, 2, &(totalMem), &len, NULL, 0);
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totalMem /= 1024;
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pl->totalMem = totalMem;
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len = sizeof(memActive);
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sysctl(MIB_vm_stats_vm_v_active_count, 4, &(memActive), &len, NULL, 0);
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memActive *= pageSizeKb;
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fpl->memActive = memActive;
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len = sizeof(memWire);
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sysctl(MIB_vm_stats_vm_v_wire_count, 4, &(memWire), &len, NULL, 0);
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memWire *= pageSizeKb;
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fpl->memWire = memWire;
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len = sizeof(buffersMem);
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sysctl(MIB_vfs_bufspace, 2, &(buffersMem), &len, NULL, 0);
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buffersMem /= 1024;
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pl->buffersMem = buffersMem;
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len = sizeof(cachedMem);
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sysctl(MIB_vm_stats_vm_v_cache_count, 4, &(cachedMem), &len, NULL, 0);
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cachedMem *= pageSizeKb;
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pl->cachedMem = cachedMem;
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if (fpl->zfs.enabled) {
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fpl->memWire -= fpl->zfs.size;
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pl->cachedMem += fpl->zfs.size;
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}
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pl->usedMem = fpl->memActive + fpl->memWire;
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//currently unused, same as with arc, custom meter perhaps
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//sysctl(MIB_vm_stats_vm_v_inactive_count, 4, &(fpl->memInactive), &len, NULL, 0);
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//sysctl(MIB_vm_stats_vm_v_free_count, 4, &(fpl->memFree), &len, NULL, 0);
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//pl->freeMem = fpl->memInactive + fpl->memFree;
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//pl->freeMem *= pageSizeKb;
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struct kvm_swap swap[16];
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int nswap = kvm_getswapinfo(fpl->kd, swap, ARRAYSIZE(swap), 0);
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pl->totalSwap = 0;
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pl->usedSwap = 0;
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for (int i = 0; i < nswap; i++) {
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pl->totalSwap += swap[i].ksw_total;
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pl->usedSwap += swap[i].ksw_used;
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}
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pl->totalSwap *= pageSizeKb;
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pl->usedSwap *= pageSizeKb;
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pl->sharedMem = 0; // currently unused
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}
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static void FreeBSDProcessList_scanTTYs(ProcessList* pl) {
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FreeBSDProcessList* fpl = (FreeBSDProcessList*) pl;
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// scan /dev/tty*
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{
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DIR* dirPtr = opendir("/dev");
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if (!dirPtr)
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return;
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int dirFd = dirfd(dirPtr);
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if (dirFd < 0)
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goto err1;
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const struct dirent* entry;
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while ((entry = readdir(dirPtr))) {
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if (!String_startsWith(entry->d_name, "tty"))
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continue;
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struct stat info;
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if (Compat_fstatat(dirFd, "/dev", entry->d_name, &info, 0) < 0)
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continue;
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if (!S_ISCHR(info.st_mode))
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continue;
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if (!Hashtable_get(fpl->ttys, info.st_rdev))
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Hashtable_put(fpl->ttys, info.st_rdev, xStrdup(entry->d_name));
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}
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err1:
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closedir(dirPtr);
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}
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// scan /dev/pts/*
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{
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DIR* dirPtr = opendir("/dev/pts");
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if (!dirPtr)
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return;
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int dirFd = dirfd(dirPtr);
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if (dirFd < 0)
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goto err2;
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const struct dirent* entry;
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while ((entry = readdir(dirPtr))) {
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struct stat info;
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if (Compat_fstatat(dirFd, "/dev/pts", entry->d_name, &info, 0) < 0)
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continue;
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if (!S_ISCHR(info.st_mode))
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continue;
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if (!Hashtable_get(fpl->ttys, info.st_rdev)) {
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char* path;
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xAsprintf(&path, "pts/%s", entry->d_name);
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Hashtable_put(fpl->ttys, info.st_rdev, path);
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}
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}
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err2:
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closedir(dirPtr);
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}
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}
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static char* FreeBSDProcessList_readProcessName(kvm_t* kd, const struct kinfo_proc* kproc, int* basenameEnd) {
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char** argv = kvm_getargv(kd, kproc, 0);
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if (!argv) {
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return xStrdup(kproc->ki_comm);
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}
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int len = 0;
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for (int i = 0; argv[i]; i++) {
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len += strlen(argv[i]) + 1;
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}
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char* comm = xMalloc(len);
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char* at = comm;
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*basenameEnd = 0;
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for (int i = 0; argv[i]; i++) {
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at = stpcpy(at, argv[i]);
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if (!*basenameEnd) {
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*basenameEnd = at - comm;
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}
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*at = ' ';
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at++;
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}
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at--;
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*at = '\0';
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return comm;
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}
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static char* FreeBSDProcessList_readJailName(const struct kinfo_proc* kproc) {
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int jid;
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struct iovec jiov[6];
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char* jname;
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char jnamebuf[MAXHOSTNAMELEN];
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if (kproc->ki_jid != 0 ) {
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memset(jnamebuf, 0, sizeof(jnamebuf));
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IGNORE_WCASTQUAL_BEGIN
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*(const void**)&jiov[0].iov_base = "jid";
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jiov[0].iov_len = sizeof("jid");
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jiov[1].iov_base = (void*) &kproc->ki_jid;
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jiov[1].iov_len = sizeof(kproc->ki_jid);
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*(const void**)&jiov[2].iov_base = "name";
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jiov[2].iov_len = sizeof("name");
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jiov[3].iov_base = jnamebuf;
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jiov[3].iov_len = sizeof(jnamebuf);
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*(const void**)&jiov[4].iov_base = "errmsg";
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jiov[4].iov_len = sizeof("errmsg");
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jiov[5].iov_base = jail_errmsg;
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jiov[5].iov_len = JAIL_ERRMSGLEN;
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IGNORE_WCASTQUAL_END
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jail_errmsg[0] = 0;
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jid = jail_get(jiov, 6, 0);
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if (jid < 0) {
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if (!jail_errmsg[0]) {
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xSnprintf(jail_errmsg, JAIL_ERRMSGLEN, "jail_get: %s", strerror(errno));
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}
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return NULL;
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} else if (jid == kproc->ki_jid) {
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jname = xStrdup(jnamebuf);
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if (jname == NULL) {
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strerror_r(errno, jail_errmsg, JAIL_ERRMSGLEN);
|
|
}
|
|
return jname;
|
|
} else {
|
|
return NULL;
|
|
}
|
|
} else {
|
|
jnamebuf[0] = '-';
|
|
jnamebuf[1] = '\0';
|
|
jname = xStrdup(jnamebuf);
|
|
}
|
|
return jname;
|
|
}
|
|
|
|
void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate) {
|
|
FreeBSDProcessList* fpl = (FreeBSDProcessList*) super;
|
|
const Settings* settings = super->settings;
|
|
bool hideKernelThreads = settings->hideKernelThreads;
|
|
bool hideUserlandThreads = settings->hideUserlandThreads;
|
|
|
|
openzfs_sysctl_updateArcStats(&fpl->zfs);
|
|
FreeBSDProcessList_scanMemoryInfo(super);
|
|
FreeBSDProcessList_scanCPUTime(super);
|
|
|
|
// in pause mode only gather global data for meters (CPU/memory/...)
|
|
if (pauseProcessUpdate) {
|
|
return;
|
|
}
|
|
|
|
if (settings->flags & PROCESS_FLAG_FREEBSD_TTY) {
|
|
FreeBSDProcessList_scanTTYs(super);
|
|
}
|
|
|
|
int count = 0;
|
|
struct kinfo_proc* kprocs = kvm_getprocs(fpl->kd, KERN_PROC_PROC, 0, &count);
|
|
|
|
for (int i = 0; i < count; i++) {
|
|
struct kinfo_proc* kproc = &kprocs[i];
|
|
bool preExisting = false;
|
|
// TODO: bool isIdleProcess = false;
|
|
Process* proc = ProcessList_getProcess(super, kproc->ki_pid, &preExisting, FreeBSDProcess_new);
|
|
FreeBSDProcess* fp = (FreeBSDProcess*) proc;
|
|
|
|
proc->show = ! ((hideKernelThreads && Process_isKernelThread(proc)) || (hideUserlandThreads && Process_isUserlandThread(proc)));
|
|
|
|
if (!preExisting) {
|
|
fp->jid = kproc->ki_jid;
|
|
proc->pid = kproc->ki_pid;
|
|
if ( ! ((kproc->ki_pid == 0) || (kproc->ki_pid == 1) ) && kproc->ki_flag & P_SYSTEM) {
|
|
fp->kernel = 1;
|
|
} else {
|
|
fp->kernel = 0;
|
|
}
|
|
proc->ppid = kproc->ki_ppid;
|
|
proc->tpgid = kproc->ki_tpgid;
|
|
proc->tgid = kproc->ki_pid;
|
|
proc->session = kproc->ki_sid;
|
|
proc->pgrp = kproc->ki_pgid;
|
|
proc->st_uid = kproc->ki_uid;
|
|
proc->starttime_ctime = kproc->ki_start.tv_sec;
|
|
Process_fillStarttimeBuffer(proc);
|
|
proc->user = UsersTable_getRef(super->usersTable, proc->st_uid);
|
|
ProcessList_add(super, proc);
|
|
proc->comm = FreeBSDProcessList_readProcessName(fpl->kd, kproc, &proc->basenameOffset);
|
|
fp->jname = FreeBSDProcessList_readJailName(kproc);
|
|
} else {
|
|
if (fp->jid != kproc->ki_jid) {
|
|
// process can enter jail anytime
|
|
fp->jid = kproc->ki_jid;
|
|
free(fp->jname);
|
|
fp->jname = FreeBSDProcessList_readJailName(kproc);
|
|
}
|
|
// if there are reapers in the system, process can get reparented anytime
|
|
proc->ppid = kproc->ki_ppid;
|
|
if (proc->st_uid != kproc->ki_uid) {
|
|
// some processes change users (eg. to lower privs)
|
|
proc->st_uid = kproc->ki_uid;
|
|
proc->user = UsersTable_getRef(super->usersTable, proc->st_uid);
|
|
}
|
|
if (settings->updateProcessNames) {
|
|
free(proc->comm);
|
|
proc->comm = FreeBSDProcessList_readProcessName(fpl->kd, kproc, &proc->basenameOffset);
|
|
}
|
|
}
|
|
|
|
// from FreeBSD source /src/usr.bin/top/machine.c
|
|
proc->m_virt = kproc->ki_size / pageSize;
|
|
proc->m_resident = kproc->ki_rssize;
|
|
proc->nlwp = kproc->ki_numthreads;
|
|
proc->time = (kproc->ki_runtime + 5000) / 10000;
|
|
|
|
proc->percent_cpu = 100.0 * ((double)kproc->ki_pctcpu / (double)kernelFScale);
|
|
proc->percent_mem = 100.0 * (proc->m_resident * pageSizeKb) / (double)(super->totalMem);
|
|
|
|
/*
|
|
* TODO
|
|
* if (proc->percent_cpu > 0.1) {
|
|
* // system idle process should own all CPU time left regardless of CPU count
|
|
* if ( strcmp("idle", kproc->ki_comm) == 0 ) {
|
|
* isIdleProcess = true;
|
|
* }
|
|
* }
|
|
*/
|
|
|
|
proc->priority = kproc->ki_pri.pri_level - PZERO;
|
|
|
|
if (strcmp("intr", kproc->ki_comm) == 0 && kproc->ki_flag & P_SYSTEM) {
|
|
proc->nice = 0; //@etosan: intr kernel process (not thread) has weird nice value
|
|
} else if (kproc->ki_pri.pri_class == PRI_TIMESHARE) {
|
|
proc->nice = kproc->ki_nice - NZERO;
|
|
} else if (PRI_IS_REALTIME(kproc->ki_pri.pri_class)) {
|
|
proc->nice = PRIO_MIN - 1 - (PRI_MAX_REALTIME - kproc->ki_pri.pri_level);
|
|
} else {
|
|
proc->nice = PRIO_MAX + 1 + kproc->ki_pri.pri_level - PRI_MIN_IDLE;
|
|
}
|
|
|
|
switch (kproc->ki_stat) {
|
|
case SIDL: proc->state = 'I'; break;
|
|
case SRUN: proc->state = 'R'; break;
|
|
case SSLEEP: proc->state = 'S'; break;
|
|
case SSTOP: proc->state = 'T'; break;
|
|
case SZOMB: proc->state = 'Z'; break;
|
|
case SWAIT: proc->state = 'D'; break;
|
|
case SLOCK: proc->state = 'L'; break;
|
|
default: proc->state = '?';
|
|
}
|
|
|
|
if (settings->flags & PROCESS_FLAG_FREEBSD_TTY) {
|
|
fp->ttyPath = (kproc->ki_tdev == NODEV) ? nodevStr : Hashtable_get(fpl->ttys, kproc->ki_tdev);
|
|
}
|
|
|
|
if (Process_isKernelThread(proc))
|
|
super->kernelThreads++;
|
|
|
|
super->totalTasks++;
|
|
if (proc->state == 'R')
|
|
super->runningTasks++;
|
|
proc->updated = true;
|
|
}
|
|
}
|