712 lines
14 KiB
C
712 lines
14 KiB
C
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/* Author: Ben Gras <beng@few.vu.nl> 17 march 2006 */
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/* Modified for ProcFS by Alen Stojanov and David van Moolenbroek */
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#include <stdio.h>
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#include <unistd.h>
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#include <pwd.h>
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#include <curses.h>
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#include <minix/timers.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <termcap.h>
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#include <termios.h>
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#include <time.h>
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#include <string.h>
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#include <signal.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <dirent.h>
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#include <assert.h>
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#include <sys/ttycom.h>
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#include <sys/times.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/select.h>
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#include <minix/com.h>
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#include <minix/config.h>
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#include <minix/type.h>
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#include <minix/endpoint.h>
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#include <minix/const.h>
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#include <minix/u64.h>
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#include <minix/paths.h>
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#include <minix/procfs.h>
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#define TIMECYCLEKEY 't'
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#define ORDERKEY 'o'
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#define ORDER_CPU 0
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#define ORDER_MEMORY 1
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#define ORDER_HIGHEST ORDER_MEMORY
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int order = ORDER_CPU;
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u32_t system_hz;
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/* name of cpu cycle types, in the order they appear in /psinfo. */
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const char *cputimenames[] = { "user", "ipc", "kernelcall" };
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#define CPUTIMENAMES ((int) (sizeof(cputimenames)/sizeof(cputimenames[0])))
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#define CPUTIME(m, i) (m & (1L << (i)))
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unsigned int nr_procs, nr_tasks;
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int nr_total;
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#define SLOT_NR(e) (_ENDPOINT_P(e) + nr_tasks)
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#define TC_BUFFER 1024 /* Size of termcap(3) buffer */
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#define TC_STRINGS 200 /* Enough room for cm,cl,so,se */
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const char *Tclr_all;
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int blockedverbose = 0;
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#define USED 0x1
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#define IS_TASK 0x2
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#define IS_SYSTEM 0x4
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#define BLOCKED 0x8
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struct proc {
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int p_flags;
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endpoint_t p_endpoint;
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pid_t p_pid;
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u64_t p_cpucycles[CPUTIMENAMES];
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int p_priority;
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endpoint_t p_blocked;
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time_t p_user_time;
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vir_bytes p_memory;
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uid_t p_effuid;
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int p_nice;
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char p_name[PROC_NAME_LEN+1];
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};
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struct proc *proc = NULL, *prev_proc = NULL;
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static void parse_file(pid_t pid)
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{
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char path[PATH_MAX], name[256], type, state;
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int version, endpt, effuid;
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unsigned long cycles_hi, cycles_lo;
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FILE *fp;
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struct proc *p;
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int slot;
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int i;
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sprintf(path, "%d/psinfo", pid);
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if ((fp = fopen(path, "r")) == NULL)
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return;
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if (fscanf(fp, "%d", &version) != 1) {
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fclose(fp);
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return;
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}
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if (version != PSINFO_VERSION) {
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fputs("procfs version mismatch!\n", stderr);
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exit(1);
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}
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if (fscanf(fp, " %c %d", &type, &endpt) != 2) {
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fclose(fp);
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return;
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}
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slot = SLOT_NR(endpt);
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if(slot < 0 || slot >= nr_total) {
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fprintf(stderr, "top: unreasonable endpoint number %d\n", endpt);
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fclose(fp);
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return;
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}
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p = &proc[slot];
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if (type == TYPE_TASK)
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p->p_flags |= IS_TASK;
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else if (type == TYPE_SYSTEM)
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p->p_flags |= IS_SYSTEM;
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p->p_endpoint = endpt;
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p->p_pid = pid;
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if (fscanf(fp, " %255s %c %d %d %llu %*u %lu %lu",
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name, &state, &p->p_blocked, &p->p_priority,
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&p->p_user_time, &cycles_hi, &cycles_lo) != 7) {
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fclose(fp);
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return;
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}
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strncpy(p->p_name, name, sizeof(p->p_name)-1);
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p->p_name[sizeof(p->p_name)-1] = 0;
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if (state != STATE_RUN)
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p->p_flags |= BLOCKED;
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p->p_cpucycles[0] = make64(cycles_lo, cycles_hi);
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p->p_memory = 0L;
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if (!(p->p_flags & IS_TASK)) {
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int j;
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if ((j=fscanf(fp, " %lu %*u %*u %*c %*d %*u %u %*u %d %*c %*d %*u",
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&p->p_memory, &effuid, &p->p_nice)) != 3) {
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fclose(fp);
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return;
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}
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p->p_effuid = effuid;
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} else p->p_effuid = 0;
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for(i = 1; i < CPUTIMENAMES; i++) {
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if(fscanf(fp, " %lu %lu",
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&cycles_hi, &cycles_lo) == 2) {
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p->p_cpucycles[i] = make64(cycles_lo, cycles_hi);
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} else {
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p->p_cpucycles[i] = 0;
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}
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}
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if ((p->p_flags & IS_TASK)) {
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if(fscanf(fp, " %lu", &p->p_memory) != 1) {
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p->p_memory = 0;
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}
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}
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p->p_flags |= USED;
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fclose(fp);
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}
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static void parse_dir(void)
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{
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DIR *p_dir;
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struct dirent *p_ent;
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pid_t pid;
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char *end;
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if ((p_dir = opendir(".")) == NULL) {
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perror("opendir on " _PATH_PROC);
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exit(1);
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}
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for (p_ent = readdir(p_dir); p_ent != NULL; p_ent = readdir(p_dir)) {
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pid = strtol(p_ent->d_name, &end, 10);
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if (!end[0] && pid != 0)
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parse_file(pid);
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}
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closedir(p_dir);
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}
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static void get_procs(void)
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{
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struct proc *p;
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int i;
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p = prev_proc;
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prev_proc = proc;
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proc = p;
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if (proc == NULL) {
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proc = malloc(nr_total * sizeof(proc[0]));
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if (proc == NULL) {
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fprintf(stderr, "Out of memory!\n");
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exit(1);
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}
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}
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for (i = 0; i < nr_total; i++)
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proc[i].p_flags = 0;
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parse_dir();
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}
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static int print_memory(void)
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{
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FILE *fp;
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unsigned int pagesize;
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unsigned long total, freemem, largest, cached;
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if ((fp = fopen("meminfo", "r")) == NULL)
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return 0;
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if (fscanf(fp, "%u %lu %lu %lu %lu", &pagesize, &total, &freemem,
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&largest, &cached) != 5) {
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fclose(fp);
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return 0;
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}
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fclose(fp);
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printf("main memory: %ldK total, %ldK free, %ldK contig free, "
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"%ldK cached\n",
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(pagesize * total)/1024, (pagesize * freemem)/1024,
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(pagesize * largest)/1024, (pagesize * cached)/1024);
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return 1;
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}
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static int print_load(double *loads, int nloads)
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{
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int i;
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printf("load averages: ");
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for(i = 0; i < nloads; i++)
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printf("%s %.2f", (i > 0) ? "," : "", loads[i]);
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printf("\n");
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return 1;
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}
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static int print_proc_summary(struct proc *pproc)
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{
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int p, alive, running, sleeping;
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alive = running = sleeping = 0;
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for(p = 0; p < nr_total; p++) {
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if (pproc[p].p_endpoint == IDLE)
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continue;
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if(!(pproc[p].p_flags & USED))
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continue;
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alive++;
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if(pproc[p].p_flags & BLOCKED)
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sleeping++;
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else
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running++;
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}
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printf("%d processes: %d running, %d sleeping\n",
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alive, running, sleeping);
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return 1;
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}
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struct tp {
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struct proc *p;
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u64_t ticks;
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};
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static int cmp_procs(const void *v1, const void *v2)
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{
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const struct tp *p1 = (const struct tp *) v1,
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*p2 = (const struct tp *) v2;
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int p1blocked, p2blocked;
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if(order == ORDER_MEMORY) {
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if(p1->p->p_memory < p2->p->p_memory) return 1;
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if(p1->p->p_memory > p2->p->p_memory) return -1;
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return 0;
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}
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p1blocked = !!(p1->p->p_flags & BLOCKED);
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p2blocked = !!(p2->p->p_flags & BLOCKED);
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/* Primarily order by used number of cpu cycles.
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*
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* Exception: if in blockedverbose mode, a blocked
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* process is always printed after an unblocked
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* process, and used cpu cycles don't matter.
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*
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* In both cases, process slot number is a tie breaker.
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*/
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if(blockedverbose && (p1blocked || p2blocked)) {
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if(!p1blocked && p2blocked)
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return -1;
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if(!p2blocked && p1blocked)
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return 1;
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} else if(p1->ticks != p2->ticks) {
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if(p1->ticks > p2->ticks) return -1;
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assert(p1->ticks < p2->ticks);
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return 1;
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}
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/* Process slot number is a tie breaker. */
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return (int) (p1->p - p2->p);
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}
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static struct tp *lookup(endpoint_t who, struct tp *tptab, int np)
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{
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int t;
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for(t = 0; t < np; t++)
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if(who == tptab[t].p->p_endpoint)
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return &tptab[t];
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fprintf(stderr, "lookup: tp %d (0x%x) not found.\n", who, who);
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abort();
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return NULL;
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}
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double ktotal = 0;
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static void print_proc(struct tp *tp, u64_t total_ticks)
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{
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int euid = 0;
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static struct passwd *who = NULL;
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static int last_who = -1;
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const char *name = "";
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int ticks;
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struct proc *pr = tp->p;
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printf("%5d ", pr->p_pid);
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euid = pr->p_effuid;
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name = pr->p_name;
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if(last_who != euid || !who) {
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who = getpwuid(euid);
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last_who = euid;
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}
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if(who && who->pw_name) printf("%-8s ", who->pw_name);
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else if(!(pr->p_flags & IS_TASK)) printf("%8d ", pr->p_effuid);
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else printf(" ");
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printf(" %2d ", pr->p_priority);
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if(!(pr->p_flags & IS_TASK)) {
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printf(" %3d ", pr->p_nice);
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} else printf(" ");
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printf("%6ldK", (pr->p_memory + 512) / 1024);
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printf("%6s", (pr->p_flags & BLOCKED) ? "" : "RUN");
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ticks = pr->p_user_time;
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printf(" %3u:%02u ", (ticks/system_hz/60), (ticks/system_hz)%60);
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printf("%6.2f%% %s", 100.0 * tp->ticks / total_ticks, name);
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}
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static char *cputimemodename(int cputimemode)
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{
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static char name[100];
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int i;
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name[0] = '\0';
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for(i = 0; i < CPUTIMENAMES; i++) {
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if(CPUTIME(cputimemode, i)) {
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assert(strlen(name) +
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strlen(cputimenames[i]) < sizeof(name));
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strcat(name, cputimenames[i]);
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strcat(name, " ");
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}
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}
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return name;
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}
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static u64_t cputicks(struct proc *p1, struct proc *p2, int timemode)
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{
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int i;
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u64_t t = 0;
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for(i = 0; i < CPUTIMENAMES; i++) {
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if(!CPUTIME(timemode, i))
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continue;
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if(p1->p_endpoint == p2->p_endpoint) {
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t = t + p2->p_cpucycles[i] - p1->p_cpucycles[i];
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} else {
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t = t + p2->p_cpucycles[i];
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}
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}
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return t;
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}
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static const char *ordername(int orderno)
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{
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switch(orderno) {
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case ORDER_CPU: return "cpu";
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case ORDER_MEMORY: return "memory";
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}
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return "invalid order";
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}
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static void print_procs(int maxlines,
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struct proc *proc1, struct proc *proc2, int cputimemode)
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{
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int p, nprocs;
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u64_t idleticks = 0;
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u64_t kernelticks = 0;
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u64_t systemticks = 0;
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u64_t userticks = 0;
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u64_t total_ticks = 0;
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int blockedseen = 0;
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static struct tp *tick_procs = NULL;
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if (tick_procs == NULL) {
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tick_procs = malloc(nr_total * sizeof(tick_procs[0]));
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if (tick_procs == NULL) {
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fprintf(stderr, "Out of memory!\n");
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exit(1);
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}
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}
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for(p = nprocs = 0; p < nr_total; p++) {
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u64_t uticks;
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if(!(proc2[p].p_flags & USED))
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continue;
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tick_procs[nprocs].p = proc2 + p;
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tick_procs[nprocs].ticks = cputicks(&proc1[p], &proc2[p], cputimemode);
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uticks = cputicks(&proc1[p], &proc2[p], 1);
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total_ticks = total_ticks + uticks;
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if(p-NR_TASKS == IDLE) {
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idleticks = uticks;
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continue;
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}
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if(p-NR_TASKS == KERNEL) {
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kernelticks = uticks;
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}
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if(!(proc2[p].p_flags & IS_TASK)) {
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if(proc2[p].p_flags & IS_SYSTEM)
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systemticks = systemticks + tick_procs[nprocs].ticks;
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else
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userticks = userticks + tick_procs[nprocs].ticks;
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}
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nprocs++;
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}
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if (total_ticks == 0)
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return;
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qsort(tick_procs, nprocs, sizeof(tick_procs[0]), cmp_procs);
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printf("CPU states: %6.2f%% user, ", 100.0 * userticks / total_ticks);
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printf("%6.2f%% system, ", 100.0 * systemticks / total_ticks);
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printf("%6.2f%% kernel, ", 100.0 * kernelticks/ total_ticks);
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printf("%6.2f%% idle", 100.0 * idleticks / total_ticks);
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#define NEWLINE do { printf("\n"); if(--maxlines <= 0) { return; } } while(0)
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NEWLINE;
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printf("CPU time displayed ('%c' to cycle): %s; ",
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TIMECYCLEKEY, cputimemodename(cputimemode));
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printf(" sort order ('%c' to cycle): %s", ORDERKEY, ordername(order));
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NEWLINE;
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NEWLINE;
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printf(" PID USERNAME PRI NICE SIZE STATE TIME CPU COMMAND");
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NEWLINE;
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for(p = 0; p < nprocs; p++) {
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struct proc *pr;
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int level = 0;
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pr = tick_procs[p].p;
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if((pr->p_flags & IS_TASK) && pr->p_pid != KERNEL) {
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/* skip old kernel tasks as they don't run anymore */
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continue;
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}
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/* If we're in blocked verbose mode, indicate start of
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* blocked processes.
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*/
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if(blockedverbose && (pr->p_flags & BLOCKED) && !blockedseen) {
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NEWLINE;
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printf("Blocked processes:");
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NEWLINE;
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blockedseen = 1;
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}
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print_proc(&tick_procs[p], total_ticks);
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NEWLINE;
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if(!blockedverbose)
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continue;
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/* Traverse dependency chain if blocked. */
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while(pr->p_flags & BLOCKED) {
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endpoint_t dep = NONE;
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struct tp *tpdep;
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level += 5;
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if((dep = pr->p_blocked) == NONE) {
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printf("not blocked on a process");
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NEWLINE;
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break;
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}
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if(dep == ANY)
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break;
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tpdep = lookup(dep, tick_procs, nprocs);
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pr = tpdep->p;
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printf("%*s> ", level, "");
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print_proc(tpdep, total_ticks);
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NEWLINE;
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}
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}
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|
}
|
|
|
|
static void showtop(int cputimemode, int r)
|
|
{
|
|
#define NLOADS 3
|
|
double loads[NLOADS];
|
|
int nloads, lines = 0;
|
|
struct winsize winsize;
|
|
|
|
if(ioctl(STDIN_FILENO, TIOCGWINSZ, &winsize) != 0) {
|
|
perror("TIOCGWINSZ");
|
|
fprintf(stderr, "TIOCGWINSZ failed\n");
|
|
exit(1);
|
|
}
|
|
|
|
get_procs();
|
|
if (prev_proc == NULL)
|
|
get_procs();
|
|
|
|
if((nloads = getloadavg(loads, NLOADS)) != NLOADS) {
|
|
fprintf(stderr, "getloadavg() failed - %d loads\n", nloads);
|
|
exit(1);
|
|
}
|
|
|
|
|
|
printf("%s", Tclr_all);
|
|
|
|
lines += print_load(loads, NLOADS);
|
|
lines += print_proc_summary(proc);
|
|
lines += print_memory();
|
|
|
|
if(winsize.ws_row > 0) r = winsize.ws_row;
|
|
|
|
print_procs(r - lines - 2, prev_proc, proc, cputimemode);
|
|
fflush(NULL);
|
|
}
|
|
|
|
static void init(int *rows)
|
|
{
|
|
char *term;
|
|
static char buffer[TC_BUFFER], strings[TC_STRINGS];
|
|
char *s = strings, *v;
|
|
|
|
*rows = 0;
|
|
|
|
if(!(term = getenv("TERM"))) {
|
|
fprintf(stderr, "No TERM set\n");
|
|
exit(1);
|
|
}
|
|
|
|
if ( tgetent( buffer, term ) != 1 ) {
|
|
fprintf(stderr, "tgetent failed for term %s\n", term);
|
|
exit(1);
|
|
}
|
|
|
|
initscr();
|
|
cbreak();
|
|
|
|
if ( (Tclr_all = tgetstr( "cl", &s )) == NULL )
|
|
Tclr_all = "\f";
|
|
|
|
if((v = tgetstr ("li", &s)) != NULL)
|
|
sscanf(v, "%d", rows);
|
|
if(*rows < 1) *rows = 24;
|
|
}
|
|
|
|
static void sigwinch(int sig) { }
|
|
|
|
static void getkinfo(void)
|
|
{
|
|
FILE *fp;
|
|
|
|
if ((fp = fopen("kinfo", "r")) == NULL) {
|
|
fprintf(stderr, "opening " _PATH_PROC "kinfo failed\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (fscanf(fp, "%u %u", &nr_procs, &nr_tasks) != 2) {
|
|
fprintf(stderr, "reading from " _PATH_PROC "kinfo failed\n");
|
|
exit(1);
|
|
}
|
|
|
|
fclose(fp);
|
|
|
|
nr_total = (int) (nr_procs + nr_tasks);
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int r, optc, s = 0;
|
|
int cputimemode = 1; /* bitmap. */
|
|
|
|
if (chdir(_PATH_PROC) != 0) {
|
|
perror("chdir to " _PATH_PROC);
|
|
return 1;
|
|
}
|
|
|
|
system_hz = (u32_t) sysconf(_SC_CLK_TCK);
|
|
|
|
getkinfo();
|
|
|
|
init(&r);
|
|
|
|
while((optc=getopt(argc, argv, "s:B")) != EOF) {
|
|
switch(optc) {
|
|
case 's':
|
|
s = atoi(optarg);
|
|
break;
|
|
case 'B':
|
|
blockedverbose = 1;
|
|
break;
|
|
default:
|
|
fprintf(stderr,
|
|
"Usage: %s [-s<secdelay>] [-B]\n",
|
|
argv[0]);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if(s < 1)
|
|
s = 2;
|
|
|
|
/* Catch window size changes so display is updated properly
|
|
* right away.
|
|
*/
|
|
signal(SIGWINCH, sigwinch);
|
|
|
|
while(1) {
|
|
fd_set fds;
|
|
int ns;
|
|
struct timeval tv;
|
|
showtop(cputimemode, r);
|
|
tv.tv_sec = s;
|
|
tv.tv_usec = 0;
|
|
|
|
FD_ZERO(&fds);
|
|
FD_SET(STDIN_FILENO, &fds);
|
|
|
|
if((ns=select(STDIN_FILENO+1, &fds, NULL, NULL, &tv)) < 0
|
|
&& errno != EINTR) {
|
|
perror("select");
|
|
sleep(1);
|
|
}
|
|
|
|
if(ns > 0 && FD_ISSET(STDIN_FILENO, &fds)) {
|
|
char inc;
|
|
if(read(STDIN_FILENO, &inc, 1) == 1) {
|
|
switch(inc) {
|
|
case 'q':
|
|
putchar('\r');
|
|
return 0;
|
|
break;
|
|
case 'o':
|
|
order++;
|
|
if(order > ORDER_HIGHEST)
|
|
order = 0;
|
|
break;
|
|
case TIMECYCLEKEY:
|
|
cputimemode++;
|
|
if(cputimemode >= (1L << CPUTIMENAMES))
|
|
cputimemode = 1;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|