-

myselftop.c

@@ -1,180 +0,0 @@
-
-#include <stdio.h>
-#include <unistd.h>
-#include <pwd.h>
-#include <curses.h>
-#include <stdlib.h>
-#include <limits.h>
-#include <termcap.h>
-#include <termios.h>
-#include <time.h>
-#include <string.h>
-#include <signal.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <dirent.h>
-#include <assert.h>
-
-struct proc {
-    pid_t pid;
-    int tick;
-};
-
-void print_procs(
-    struct proc *proc1, struct proc *proc2, int cputimemode)
-{
-    int p, nprocs;
-    u64_t idleticks = 0;
-    u64_t kernelticks = 0;
-    u64_t systemticks = 0;
-    u64_t userticks = 0;
-    u64_t total_ticks = 0;
-    int blockedseen = 0;
-    static struct proc *tick_procs = NULL;
-    tick_procs = malloc(nr_total * sizeof(struct proc));
-
-
-    for(p = nprocs = 0; p < nr_total; p++) {
-        u64_t uticks;
-        //如果当前进程标志不是used就continue 看下一个进程。
-        if(!(proc2[p].p_flags & USED))
-            continue;
-        tick_procs[nprocs].p = proc2 + p;
-        tick_procs[nprocs].ticks = cputicks(&proc1[p], &proc2[p], cputimemode);
-        //更新实时uticks
-        uticks = cputicks(&proc1[p], &proc2[p], 1);
-        //算出总的ticks
-        total_ticks = total_ticks + uticks;
-        //判断是否为idletick
-        //为0一直continue 不用计算
-        if(p-5 == 317) {
-            idleticks = uticks;
-            continue;
-        }
-        //判断是否为kerneltick
-        if(p-5 == ((endpoint_t) -1)) {
-            kernelticks = uticks;
-        }
-        if(!(proc2[p].p_flags & IS_TASK)) {
-            if(proc2[p].p_flags & IS_SYSTEM)
-                systemticks = systemticks + tick_procs[nprocs].ticks;
-            else
-                userticks = userticks + tick_procs[nprocs].ticks;
-        }
-
-        nprocs++;
-    }
-
-    if (total_ticks == 0)
-        return;
-    printf("CPU states: %6.2f%%", 100.0 * usedticks / total_ticks);
-    printf("\n");
-}
-
-
-
-int print_memory(void)
-{
-    FILE *fp;
-    unsigned int pagesize;
-    unsigned long total, free, largest, cached;
-    if ((fp = fopen("/proc/meminfo", "r")) == NULL)
-        return 0;
-    if (fscanf(fp, "%u %lu %lu %lu %lu", &pagesize, &total, &free,
-            &largest, &cached) != 5) {
-        fclose(fp);
-        return 0;
-    }
-    fclose(fp);
-    printf("main memory: %ldK total, %ldK free, %ldK contig free, "
-        "%ldK cached\n",
-        (pagesize * total)/1024, (pagesize * free)/1024,
-        (pagesize * largest)/1024, (pagesize * cached)/1024);
-    return 1;
-}
-
-int nr_procs, nr_tasks, nr_total;
-void getkinfo(void)
-{
-    FILE *fp;
-    if ((fp = fopen("/proc/kinfo", "r")) == NULL) {
-        
-        exit(1);
-    }
-    if (fscanf(fp, "%u %u", &nr_procs, &nr_tasks) != 2) {
-       
-        exit(1);
-    }
-    fclose(fp);
-    nr_total = (int) (nr_procs + nr_tasks);
-}
-
-void parse_psinfo(pid_t pid, struct proc pro)
-{
-    char path[PATH_MAX];
-    char name[256], type, state;
-    int version, endpt, blocked, priority, tick;
-    FILE *fp;
-    sprintf(path, "/proc/%d/psinfo", pid);
-    if ((fp = fopen(path, "r")) == NULL)
-        return;
-    if (fscanf(fp, "%d %c %d %s %c %d %d", &version, &type, &endpt, name, &state, &blocked, &priority) != 7)
-    {
-        fclose(fp);
-        return;
-    }
-   //读入 滴答
-    if (fscanf(fp, "%d", &tick) < 0) 
-    {
-        fclose(fp);
-        return;
-    }
-    //存入进程结构体
-    pro.pid =  pid;
-    pro.tick = tick;
-    fclose(fp);
-}
-
-void parse_dir(process)
-{
-    DIR *p_dir;
-    struct dirent *p_ent;
-    pid_t pid;
-    char *end;
-    p_dir = opendir("/proc/")；
-    //readdir(),/proc/pid/psinfo,/proc/内文件名为PID
-    p_ent=readdir(p_dir);
-    int i=0;
-   while(p_ent != NULL)
-   {
-       pid=strtol(p_ent->d_name,&end,10);
-       if(pid!=0 && !end[0])
-       {
-           parse_psinfo(pid, process[i]);
-           i++;
-       }
-       p_ent=readdir(p_dir);
-    }
-    closedir(p_dir);
-}
-
-void get_procs()
-{
-    //struct proc *process;
-    //process = malloc(nr_total * sizeof(struct proc);
-    struct proc process[nr_total];
-    parse_dir(process);
-    print_procs(process);
-}
-
-int mytop()
-{
-    if (chdir("/proc") != 0) 
-    {
-        perror("chdir to /proc" );
-        return 1;
-    }
-    print_memory();
-    getkinfo();
-    get_procs();
-}