mirror of https://github.com/xzeldon/htop.git
431 lines
14 KiB
C
431 lines
14 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 GPL, 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 "ProcessList.h"
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#include "FreeBSDProcessList.h"
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#include "FreeBSDProcess.h"
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#include <unistd.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <sys/user.h>
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#include <fcntl.h>
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#include <string.h>
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/*{
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#include <kvm.h>
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#include <sys/param.h>
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#include <sys/jail.h>
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#include <sys/uio.h>
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#include <sys/resource.h>
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#define JAIL_ERRMSGLEN 1024
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char jail_errmsg[JAIL_ERRMSGLEN];
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typedef struct CPUData_ {
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double userPercent;
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double nicePercent;
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double systemPercent;
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double irqPercent;
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double idlePercent;
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double systemAllPercent;
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} CPUData;
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typedef struct FreeBSDProcessList_ {
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ProcessList super;
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kvm_t* kd;
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CPUData* cpus;
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unsigned long *cp_time_o;
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unsigned long *cp_time_n;
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unsigned long *cp_times_o;
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unsigned long *cp_times_n;
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} FreeBSDProcessList;
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}*/
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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_cache_count[4];
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static int MIB_hw_physmem[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 pageSizeKb;
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static int kernelFScale;
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ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidWhiteList, uid_t userId) {
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FreeBSDProcessList* fpl = calloc(1, sizeof(FreeBSDProcessList));
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ProcessList* pl = (ProcessList*) fpl;
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ProcessList_init(pl, Class(FreeBSDProcess), usersTable, pidWhiteList, userId);
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size_t 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_cache_count", MIB_vm_stats_vm_v_cache_count, &len);
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len = 2; sysctlnametomib("hw.physmem", MIB_hw_physmem, &len);
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pageSizeKb = PAGE_SIZE_KB;
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fpl->kd = kvm_open(NULL, "/dev/null", NULL, 0, NULL);
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assert(fpl->kd);
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size_t sizeof_kernelFScale = sizeof(kernelFScale);
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if (sysctlbyname("kern.fscale", &kernelFScale, &sizeof_kernelFScale, NULL, 0) == -1) {
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//sane default on x86 machines, in case this sysctl call failed
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kernelFScale = 2048;
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}
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int smp = 0;
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size_t sizeof_smp = sizeof(smp);
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if (sysctlbyname("kern.smp.active", &smp, &sizeof_smp, NULL, 0) != 0 || sizeof_smp != sizeof(smp)) {
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smp = 0;
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}
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int cpus = 1;
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size_t sizeof_cpus = sizeof(cpus);
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if (smp) {
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int err = sysctlbyname("kern.smp.cpus", &cpus, &sizeof_cpus, NULL, 0);
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if (err) cpus = 1;
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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 = calloc(cpus, sizeof_cp_time_array);
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fpl->cp_time_n = calloc(cpus, sizeof_cp_time_array);
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len = sizeof_cp_time_array;
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// fetch intial 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 intial 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 = calloc(cpus, sizeof_cp_time_array);
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fpl->cp_times_n = calloc(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 = MAX(cpus, 1);
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if (cpus == 1 ) {
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fpl->cpus = realloc(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 = realloc(fpl->cpus, (pl->cpuCount + 1) * sizeof(CPUData));
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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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const FreeBSDProcessList* fpl = (FreeBSDProcessList*) this;
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if (fpl->kd) kvm_close(fpl->kd);
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if (fpl->cp_time_o != NULL) free(fpl->cp_time_o);
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if (fpl->cp_time_n != NULL) free(fpl->cp_time_n);
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if (fpl->cp_times_o != NULL) free(fpl->cp_times_o);
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if (fpl->cp_times_n != NULL) free(fpl->cp_times_n);
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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 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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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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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 ) total_d = 1;
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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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const FreeBSDProcessList* fpl = (FreeBSDProcessList*) pl;
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size_t len = sizeof(pl->totalMem);
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sysctl(MIB_hw_physmem, 2, &(pl->totalMem), &len, NULL, 0);
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pl->totalMem /= 1024;
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sysctl(MIB_vm_stats_vm_v_wire_count, 4, &(pl->usedMem), &len, NULL, 0);
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pl->usedMem *= pageSizeKb;
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pl->freeMem = pl->totalMem - pl->usedMem;
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sysctl(MIB_vm_stats_vm_v_cache_count, 4, &(pl->cachedMem), &len, NULL, 0);
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pl->cachedMem *= pageSizeKb;
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struct kvm_swap swap[16];
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int nswap = kvm_getswapinfo(fpl->kd, swap, sizeof(swap)/sizeof(swap[0]), 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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pl->buffersMem = 0; // not exposed to userspace
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}
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char* FreeBSDProcessList_readProcessName(kvm_t* kd, 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 strdup(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 = malloc(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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char* FreeBSDProcessList_readJailName(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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*(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 = &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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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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snprintf(jail_errmsg, JAIL_ERRMSGLEN, "jail_get: %s", strerror(errno));
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return NULL;
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} else if (jid == kproc->ki_jid) {
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jname = strdup(jnamebuf);
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if (jname == NULL)
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strerror_r(errno, jail_errmsg, JAIL_ERRMSGLEN);
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return jname;
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} else {
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return NULL;
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}
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} else {
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jnamebuf[0]='-';
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jnamebuf[1]='\0';
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jname = strdup(jnamebuf);
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}
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return jname;
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}
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void ProcessList_goThroughEntries(ProcessList* this) {
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FreeBSDProcessList* fpl = (FreeBSDProcessList*) this;
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Settings* settings = this->settings;
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bool hideKernelThreads = settings->hideKernelThreads;
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bool hideUserlandThreads = settings->hideUserlandThreads;
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FreeBSDProcessList_scanMemoryInfo(this);
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FreeBSDProcessList_scanCPUTime(this);
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int cpus = this->cpuCount;
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int count = 0;
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struct kinfo_proc* kprocs = kvm_getprocs(fpl->kd, KERN_PROC_ALL, 0, &count);
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for (int i = 0; i < count; i++) {
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struct kinfo_proc* kproc = &kprocs[i];
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bool preExisting = false;
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Process* proc = ProcessList_getProcess(this, kproc->ki_pid, &preExisting, (Process_New) FreeBSDProcess_new);
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FreeBSDProcess* fp = (FreeBSDProcess*) proc;
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proc->show = ! ((hideKernelThreads && Process_isKernelThread(fp)) || (hideUserlandThreads && Process_isUserlandThread(proc)));
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if (!preExisting) {
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fp->jid = kproc->ki_jid;
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proc->pid = kproc->ki_pid;
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if ( ! ((kproc->ki_pid == 0) || (kproc->ki_pid == 1) ) && kproc->ki_flag & P_SYSTEM)
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fp->kernel = 1;
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else
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fp->kernel = 0;
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proc->tpgid = kproc->ki_tpgid;
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proc->tgid = kproc->ki_pid;
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proc->session = kproc->ki_sid;
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proc->tty_nr = kproc->ki_tdev;
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proc->pgrp = kproc->ki_pgid;
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proc->st_uid = kproc->ki_uid;
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proc->starttime_ctime = kproc->ki_start.tv_sec;
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proc->user = UsersTable_getRef(this->usersTable, proc->st_uid);
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ProcessList_add((ProcessList*)this, proc);
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proc->comm = FreeBSDProcessList_readProcessName(fpl->kd, kproc, &proc->basenameOffset);
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fp->jname = FreeBSDProcessList_readJailName(kproc);
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} else {
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if(fp->jid != kproc->ki_jid) {
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// proces can enter jail anytime
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fp->jid = kproc->ki_jid;
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free(fp->jname);
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fp->jname = FreeBSDProcessList_readJailName(kproc);
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}
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if (proc->ppid != kproc->ki_ppid) {
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// if there are reapers in the system, proces can get reparented anytime
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proc->ppid = kproc->ki_ppid;
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}
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if(proc->st_uid != kproc->ki_uid) {
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// some proceses change users (eg. to lower privs)
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proc->st_uid = kproc->ki_uid;
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proc->user = UsersTable_getRef(this->usersTable, proc->st_uid);
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}
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if (settings->updateProcessNames) {
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free(proc->comm);
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proc->comm = FreeBSDProcessList_readProcessName(fpl->kd, kproc, &proc->basenameOffset);
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}
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}
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proc->m_size = kproc->ki_size / pageSizeKb / 1000;
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proc->m_resident = kproc->ki_rssize; // * pageSizeKb;
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proc->nlwp = kproc->ki_numthreads;
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proc->time = (kproc->ki_runtime + 5000) / 10000;
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proc->percent_cpu = 100.0 * ((double)kproc->ki_pctcpu / (double)kernelFScale);
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if (cpus > 1 ) {
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proc->percent_cpu = proc->percent_cpu / (double) cpus;
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}
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if (proc->percent_cpu >= 99.8) {
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// don't break formatting
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proc->percent_cpu = 99.8;
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}
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proc->priority = kproc->ki_pri.pri_level - PZERO;
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if (strcmp("intr", kproc->ki_comm) == 0 && kproc->ki_flag & P_SYSTEM) {
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proc->nice = 0; //@etosan: freebsd intr kernel process (not thread) has weird nice value
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} else if (kproc->ki_pri.pri_class == PRI_TIMESHARE) {
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proc->nice = kproc->ki_nice - NZERO;
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} else if (PRI_IS_REALTIME(kproc->ki_pri.pri_class)) {
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proc->nice = PRIO_MIN - 1 - (PRI_MAX_REALTIME - kproc->ki_pri.pri_level);
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} else {
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proc->nice = PRIO_MAX + 1 + kproc->ki_pri.pri_level - PRI_MIN_IDLE;
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}
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switch (kproc->ki_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 SWAIT: proc->state = 'D'; break;
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case SLOCK: proc->state = 'L'; break;
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default: proc->state = '?';
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}
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if (Process_isKernelThread(fp)) {
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this->kernelThreads++;
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}
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this->totalTasks++;
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if (proc->state == 'R')
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this->runningTasks++;
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proc->updated = true;
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}
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}
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