Add basic top support to ps.c, delete toys/pending/top.c.

While I'm there, pack the ps help text, break out TOP_COMMON (todo: update
config2help to collate that properly), add -o CPU showing which processor
this pid is running on, implement -o C (it's %cpu without the fractional
part), add -o %MEM, fix header padding.

1 files changed, 0 insertions, 848 deletions

diff --git a/toys/pending/top.c b/toys/pending/top.c
deleted file mode 100644
index fd7e879c..00000000
--- a/toys/pending/top.c
+++ /dev/null
@@ -1,848 +0,0 @@
-/* top.c - Provide a view of process activity in real time.
- *
- * Copyright 2013 Bilal Qureshi <bilal.jmi@gmail.com>
- * Copyright 2013 Ashwini Kumar <ak.ashwini@gmail.com>
- * Copyright 2013 Kyungwan Han <asura321@gmail.com>
- *
- * No Standard
-
-USE_TOP(NEWTOY(top, ">0d#=3n#<1mb", TOYFLAG_USR|TOYFLAG_BIN))
-
-config TOP
-  bool "top"
-  default n
-  help
-    
-    usage: top [-mb] [ -d seconds ] [ -n iterations ]
-
-    Provide a view of process activity in real time.
-    Keys
-       N/M/P/T show CPU usage, sort by pid/mem/cpu/time
-       S       show memory
-       R       reverse sort
-       H       toggle threads
-       C,1     toggle SMP
-       Q,^C    exit
-
-    Options
-       -n Iterations before exiting
-       -d Delay between updates
-       -m Same as 's' key
-       -b Batch mode
-*/
-
-#define FOR_top
-#include "toys.h"
-#include <signal.h>
-#include <poll.h>
-
-GLOBALS(
-  long iterations;
-  long delay;
-
-  long cmp_field;
-  long reverse;
-  long rows;
-  long smp;
-  long threads;
-  long m_flag;
-  long num_new_procs;
-  long scroll_offset;
-  struct termios inf;
-)
-
-#define PROC_NAME_LEN 512 //For long cmdline.
-#define INIT_PROCS 50
-
-struct cpu_info {
-  long unsigned utime, ntime, stime, itime;
-  long unsigned iowtime, irqtime, sirqtime, steal;
-  unsigned long long total;
-};
-
-struct keycode_map_s {
-  char *key;
-  int code;
-};
-
-struct proc_info {
-  struct proc_info *next;
-  pid_t pid, ppid;
-  uid_t uid;
-  char name[PROC_NAME_LEN];
-  char tname[PROC_NAME_LEN];
-  char state[4];
-  int prs;
-  unsigned long utime, stime, delta_utime, delta_stime, delta_time;
-  unsigned long vss, vssrw, rss, rss_shr, drt, drt_shr, stack;
-};
-
-static struct proc_info *free_procs, **old_procs, **new_procs;
-static struct cpu_info old_cpu[10], new_cpu[10]; //1 total, 8 cores, 1 null
-static int (*proc_cmp)(const void *a, const void *b);
-
-static struct proc_info *find_old_proc(pid_t pid) 
-{
-  int i;
-
-  for (i = 0; old_procs && old_procs[i]; i++)
-    if (old_procs[i]->pid == pid) return old_procs[i];
-
-  return NULL;
-}
-
-static void read_stat(char *filename, struct proc_info *proc) 
-{
-  int nice;
-  FILE *file;
-  char *open_paren, *close_paren;
-
-  if (!(file = fopen(filename, "r"))) return;
-  fgets(toybuf, sizeof(toybuf), file);
-  fclose(file);
-
-  // Split at first '(' and last ')' to get process name.
-  open_paren = strchr(toybuf, '(');
-  close_paren = strrchr(toybuf, ')');
-  if (!open_paren || !close_paren) return;
-
-  *open_paren = *close_paren = '\0';
-  snprintf(proc->tname, PROC_NAME_LEN, "[%s]",open_paren + 1);
-
-  // Scan rest of string.
-  sscanf(close_paren + 1, " %c %d %*d %*d %*d %*d %*d %*d %*d %*d %*d "
-      "%lu %lu %*d %*d %*d %d %*d %*d %*d %lu %ld "
-      "%*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %*d %d",
-      &proc->state[0], &proc->ppid, &proc->utime, &proc->stime, &nice, 
-      &proc->vss, &proc->rss, &proc->prs);
-  if (!proc->vss && proc->state[0] != 'Z') proc->state[1] = 'W';
-  else proc->state[1] = ' ';
-  if (nice < 0 ) proc->state[2] = '<';
-  else if (nice) proc->state[2] = 'N';
-  else proc->state[2] = ' ';
-}
-
-static void read_status(char *filename, struct proc_info *proc) 
-{
-  FILE *file;
-
-  if (!(file = fopen(filename, "r"))) return;
-  while (fgets(toybuf, sizeof(toybuf), file)) 
-    if (sscanf(toybuf, "Uid: %u", &(proc->uid)) == 1) break;
-
-  fclose(file);
-}
-
-static void read_cmdline(char *filename, struct proc_info *proc) 
-{
-  int fd, len, rbytes = 0;
-  char *ch, *base, tname[PROC_NAME_LEN];
-
-  if ((fd = open(filename, O_RDONLY)) == -1) return;
-  rbytes = readall(fd, toybuf, sizeof(toybuf));
-  close(fd);
-  if (rbytes <= 0) {
-    strcpy(proc->name, proc->tname);
-    return;
-  }
-  toybuf[rbytes] = '\0';
-  while (--rbytes >= 0 && toybuf[rbytes] == '\0') continue;
-
-  snprintf(tname, PROC_NAME_LEN, "%s", proc->tname+1);
-  tname[strlen(tname) - 1] = '\0';
-  ch = strchr(toybuf, ' ');
-  if (ch) *ch = '\0';
-  base = strrchr(toybuf, '/');
-  if (base) base++;
-  else base = toybuf;
-
-  for (; rbytes >= 0; rbytes--)
-    if ((unsigned char)toybuf[rbytes] < ' ') toybuf[rbytes] = ' ';
-
-  if (*base == '-') base++;
-  len = strlen(tname);
-  if (strncmp(base, tname, len)) {
-    len +=3; //{,}, \0
-    rbytes = strlen(toybuf);
-    memmove(toybuf+ len, toybuf, rbytes+1);
-    snprintf(toybuf, sizeof(toybuf), "{%s}", tname);
-    toybuf[len-1] = ' ';
-  } 
-  snprintf(proc->name, PROC_NAME_LEN, "%s", toybuf);
-}
-
-static void add_proc(int proc_num, struct proc_info *proc) 
-{
-  int i;
-
-  if (proc_num >= TT.num_new_procs-1) {
-    new_procs = xrealloc(new_procs, (INIT_PROCS + TT.num_new_procs) 
-        * sizeof(struct proc_info *));
-    for (i = TT.num_new_procs; i < (INIT_PROCS +  TT.num_new_procs); i++)
-      new_procs[i] = NULL;
-    TT.num_new_procs += INIT_PROCS;
-  }
-  new_procs[proc_num] = proc;
-}
-
-void signal_handler(int sig)
-{
-  tcsetattr(STDIN_FILENO, TCSANOW, &TT.inf);
-  xputc('\n');
-  signal(sig, SIG_DFL);
-  raise(sig);
-  _exit(sig | 128);
-}
-
-static int get_key_code(char *ch, int i)
-{  
-  static struct keycode_map_s type2[] = {
-    {"OA",KEY_UP}, {"OB",KEY_DOWN}, {"OH",KEY_HOME},
-    {"OF",KEY_END}, {"[A",KEY_UP}, {"[B",KEY_DOWN},
-    {"[H",KEY_HOME}, {"[F",KEY_END}, {NULL, 0}
-  };       
-
-  static struct keycode_map_s type3[] = {
-    {"[1~", KEY_HOME}, {"[4~", KEY_END}, {"[5~", KEY_PGUP},
-    {"[6~", KEY_PGDN}, {"[7~", KEY_HOME}, {"[8~", KEY_END},
-    {NULL, 0}
-  };
-  struct keycode_map_s *table, *keytable[3] = {type2, type3, NULL};
-  int j;
-
-  if ( i > 3 || i < 1) return -1; 
-
-  for (j=0; (table = keytable[j]); j++) {
-    while (table->key) {
-      if (!strncmp(ch, table->key, i)) break;
-      table++;
-    }
-    if (table->key) {
-      if (i == 1 || (i == 2 && j)) return 1;
-      return table->code;
-    }
-  }
-  return -1;
-}
-
-static int read_input(int delay)
-{
-  struct pollfd pfd[1];
-  int ret, fret = 0, cnt = 0, escproc = 0, timeout = delay * 1000;
-  char ch, seq[4] = {0,};
-  struct termios newf;
-
-  tcgetattr(0, &TT.inf);
-  if (toys.optflags & FLAG_b) {
-    sleep(delay);
-    return 0;
-  }
-  pfd[0].fd = 0;
-  pfd[0].events = POLLIN;
-
-  //prepare terminal for input, without Enter of Carriage return
-  memcpy(&newf, &TT.inf, sizeof(struct termios));
-  newf.c_lflag &= ~(ICANON | ECHO | ECHONL);
-  newf.c_cc[VMIN] = 1;
-  newf.c_cc[VTIME] = 0;
-  tcsetattr(0, TCSANOW, &newf);
-
-  while (1) {
-    if ((ret = poll(pfd, 1, timeout)) >= 0) break;
-    else {
-      if (timeout > 0) timeout--;
-      if (errno == EINTR) continue;
-      perror_exit("poll");
-    }
-  }
-
-  while (ret) {
-    if (read(STDIN_FILENO, &ch, 1) != 1) toys.optflags |= FLAG_b;
-    else if (ch == '\033' || escproc) {
-      int code;
-      //process ESC keys
-      if (!escproc) {
-        if (!poll(pfd, 1, 50)) break; //no more chars
-        escproc = 1;
-        continue;
-      }
-      seq[cnt++] = ch;
-      code = get_key_code(seq, cnt);
-      switch(code) {
-        case -1: //no match
-          fret = 0;
-          break;
-        case 1: //read more
-          continue;
-        default: // got the key
-          fret = code;
-          break;
-      }
-    } else if ((ch == TT.inf.c_cc[VINTR]) 
-        || (ch == TT.inf.c_cc[VEOF]))
-      fret = 'q';
-    else fret = ch | 0x20;
-    break;
-  }
-  tcsetattr(0, TCSANOW, &TT.inf);
-  return fret;
-}
-
-// Allocation for Processes
-static struct proc_info *alloc_proc(void) 
-{
-  struct proc_info *proc;
-
-  if (free_procs) {
-    proc = free_procs;
-    free_procs = free_procs->next;
-    memset(proc, 0, sizeof(*proc));
-  } else proc = xzalloc(sizeof(*proc));
-
-  return proc;
-}
-
-static void free_proc_list(struct proc_info *procs)
-{
-  struct proc_info *tmp = procs;
-  
-  for (;tmp; tmp = procs) {
-    procs = procs->next;
-    free(tmp);
-  }
-}
-
-// Free allocated Processes in order to avoid memory leaks
-static void free_proc(struct proc_info *proc) 
-{
-  proc->next = free_procs;
-  free_procs = proc;
-}
-
-static struct proc_info *add_new_proc(pid_t pid, pid_t tid)
-{
-  char filename[64];
-  struct proc_info *proc = alloc_proc();
-
-  proc->pid = (tid)? tid : pid;
-  if (!tid) {
-    sprintf(filename, "/proc/%d/stat", pid);
-    read_stat(filename, proc);
-    sprintf(filename, "/proc/%d/cmdline", pid);
-    read_cmdline(filename, proc);
-    sprintf(filename, "/proc/%d/status", pid);
-    read_status(filename, proc);
-  } else{
-    sprintf(filename, "/proc/%d/task/%d/stat", pid,tid);
-    read_stat(filename, proc);
-    sprintf(filename, "/proc/%d/task/%d/cmdline", pid, tid);
-    read_cmdline(filename, proc);
-  }
-  return proc;
-}
-
-static void read_smaps(pid_t pid, struct proc_info *p)
-{
-  FILE *fp;
-  char *line;
-  size_t len;
-  long long start, end, val, prvcl, prvdr, shrdr, shrcl;
-  int count;
-
-  p->vss = p->rss = 0;
-  start = end = val = prvcl = prvdr = shrdr = shrcl = 0;
-  sprintf(toybuf, "/proc/%u/smaps", pid);
-  if (!(fp = fopen(toybuf, "r"))) {
-    error_msg("No %ld\n", (long)pid);
-    return;
-  }
-  for (;;) {
-    int off;
-
-    line = 0;
-    if (0 >= getline(&line, &len, fp)) break;
-    count = sscanf(line, "%llx-%llx %s %*s %*s %*s %n",
-        &start, &end, toybuf, &off);
-
-    if (count == 3) {
-      end = end - start;
-      if (strncmp(line+off, "/dev/", 5) || !strcmp(line+off, "/dev/zero\n")) {
-        p->vss += end;
-        if (toybuf[1] == 'w') p->vssrw += end;
-      }
-      if (line[off] && !strncmp(line+off, "[stack]",7)) p->stack += end;
-    } else {
-      if (0<sscanf(line, "Private_Clean: %lld", &val)) prvcl += val;
-      if (0<sscanf(line, "Private_Dirty: %lld", &val)) prvdr += val;
-      if (0<sscanf(line, "Shared_Dirty: %lld", &val)) shrdr += val;
-      if (0<sscanf(line, "Shared_Clean: %lld", &val)) shrcl += val;
-    }
-    free(line);
-  }
-  free(line); //incase it broke out.
-  p->rss_shr = shrdr + shrcl;
-  p->drt = prvdr + shrdr;
-  p->drt_shr = shrdr;
-  p->rss = p->rss_shr + prvdr + prvcl;
-  fclose(fp);
-}
-
-static void read_procs(void) // Read Processes
-{
-  DIR *proc_dir, *thr_dir;
-  struct dirent *pid_dir, *t_dir;
-  struct proc_info *proc;
-  pid_t pid, tid;
-  int proc_num = 0;
-
-  proc_dir = opendir("/proc");
-  if (!proc_dir) perror_exit("Could not open /proc");
-
-  new_procs = xzalloc(INIT_PROCS * sizeof(struct proc_info *));
-  TT.num_new_procs = INIT_PROCS;
-
-  while ((pid_dir = readdir(proc_dir))) {
-    if (!isdigit(pid_dir->d_name[0])) continue;
-
-    pid = atoi(pid_dir->d_name);
-    proc = add_new_proc(pid, 0);
-    if (TT.m_flag) {
-      read_smaps(pid, proc);
-      if (!proc->vss) {
-        free(proc);
-        continue;
-      }
-    }
-    add_proc(proc_num++, proc);
-
-    if (TT.threads) {
-      char filename[64];
-      uid_t uid = proc->uid;
-
-      sprintf(filename,"/proc/%d/task",pid);
-      if ((thr_dir = opendir(filename))) {
-        while ((t_dir = readdir(thr_dir))) {
-          if (!isdigit(t_dir->d_name[0])) continue;   
-
-          tid = atoi(t_dir->d_name);
-          if (pid == tid) continue;
-          proc = add_new_proc(pid, tid);
-          proc->uid = uid; //child will have same uid as parent.
-          add_proc(proc_num++, proc);
-        }
-        closedir(thr_dir);
-      }
-    }
-  }
-
-  closedir(proc_dir);
-  TT.num_new_procs = proc_num;
-}
-
-//calculate percentage.
-static char* show_percent(long unsigned num, long unsigned den)
-{
-  long res;
-  static char ch, buff[12]={'\0'};
-
-  if(num > den) num = den;
-  res = (num * 100)/den;
-  sprintf(buff,"%ld", (num * 100)% den);
-  ch = *buff;
-  sprintf(buff, "%ld.%c",res, ch);
-  return buff;
-}
-
-static int print_header(struct sysinfo *info, unsigned int cols)
-{
-  int fd, j, k, rows =0;
-  long unsigned total, meminfo_cached, anon, meminfo_mapped,
-       meminfo_slab, meminfo_dirty, meminfo_writeback, swapT, swapF;
-  char *buff;
-
-  fd = xopen("/proc/meminfo", O_RDONLY);
-  while ((buff = get_line(fd))) {
-    if (!strncmp(buff, "Cached", 6))
-      sscanf(buff,"%*s %lu\n",&meminfo_cached);
-    else if (!strncmp(buff, "AnonPages", 9))
-      sscanf(buff,"%*s %lu\n",&anon);
-    else if (!strncmp(buff, "Mapped", 6))
-      sscanf(buff,"%*s %lu\n",&meminfo_mapped);
-    else if (!strncmp(buff, "Slab", 4))
-      sscanf(buff,"%*s %lu\n",&meminfo_slab);
-    else if (!strncmp(buff, "Dirty", 5))
-      sscanf(buff,"%*s %lu\n",&meminfo_dirty);
-    else if (!strncmp(buff, "Writeback", 9))
-      sscanf(buff,"%*s %lu\n",&meminfo_writeback);
-    else if (!strncmp(buff, "SwapTotal", 9))
-      sscanf(buff,"%*s %lu\n",&swapT);
-    else if (!strncmp(buff, "SwapFree", 8))
-      sscanf(buff,"%*s %lu\n",&swapF);
-    free(buff);
-  }
-  close(fd);
-
-  if (!(toys.optflags & FLAG_b)) printf("\033[H\033[J");
-
-  if (TT.m_flag){
-    sprintf(toybuf, "Mem total:%lu anon:%lu map:%lu free:%lu", 
-        ((info->totalram) >> 10), anon, meminfo_mapped,
-        ((info->freeram) >> 10));
-    printf("%.*s\n", cols, toybuf);
-
-    sprintf(toybuf, "slab:%lu buf:%lu cache:%lu dirty:%lu write:%lu",
-        meminfo_slab, ((info->bufferram) >>10), meminfo_cached,
-        meminfo_dirty,meminfo_writeback);
-    printf("%.*s\n", cols, toybuf);
-
-    sprintf(toybuf, "Swap total:%lu free:%lu",swapT, swapF);
-    printf("%.*s\n", cols, toybuf);
-    rows += 3;
-  } else {
-    sprintf(toybuf,"Mem: %luK used, %luK free, %luK shrd, %luK buff, %luK cached", 
-        (info->totalram-info->freeram) >>10, (info->freeram) >>10, 
-        (info->sharedram) >>10, (info->bufferram) >>10, meminfo_cached);
-    printf("%.*s\n", cols, toybuf);
-
-    for (k = 1; new_cpu[k].total; k++) {
-      j = 0;
-      if (!TT.smp) { 
-        k = 0;
-        j = sprintf(toybuf,"CPU:");
-      } else j = sprintf(toybuf,"CPU%d:", k-1);
-
-      total = (new_cpu[k].total) - (old_cpu[k].total);
-      if (!total) total = 1; //avoid denominator as 0, FPE
-      j += sprintf(toybuf + j," %s%% usr", 
-          show_percent((new_cpu[k].utime - old_cpu[k].utime), total));
-      j += sprintf(toybuf+j," %s%% sys",
-          show_percent((new_cpu[k].stime - old_cpu[k].stime), total));
-      j += sprintf(toybuf+j," %s%% nic",
-          show_percent(new_cpu[k].ntime - old_cpu[k].ntime, total));
-      j += sprintf(toybuf+j," %s%% idle",
-          show_percent(new_cpu[k].itime - old_cpu[k].itime, total));
-      j += sprintf(toybuf+j," %s%% io",
-          show_percent((new_cpu[k].iowtime - old_cpu[k].iowtime), total));
-      j += sprintf(toybuf+j," %s%% irq",
-          show_percent(new_cpu[k].irqtime - old_cpu[k].irqtime, total));
-      j += sprintf(toybuf+j," %s%% sirq",
-          show_percent(new_cpu[k].sirqtime - old_cpu[k].sirqtime, total));
-      printf("%.*s\n", cols, toybuf);
-      if (!TT.smp) break;
-    }
-
-    if ((buff = readfile("/proc/loadavg", NULL, 0))) {
-      buff[strlen(buff) -1] = '\0'; //removing '\n' at end
-      sprintf(toybuf, "Load average: %s", buff);
-      printf("%.*s\n", cols, toybuf);
-      free(buff);
-    }
-    rows += 2 + ((TT.smp) ? k-1 : 1);
-  }
-  return rows;
-}
-
-static void print_procs(void) 
-{
-  int i, j = 0;
-  struct proc_info *old_proc, *proc;
-  long unsigned total_delta_time;
-  struct passwd *user;
-  char *user_str, user_buf[20];
-  struct sysinfo info;
-  unsigned int cols=0, rows =0;
-
-  terminal_size(&cols, &rows);
-  if (!rows){
-    rows = 24; //on serial consoles setting default
-    cols = 79;
-  }
-  if (toys.optflags & FLAG_b) rows = INT_MAX;
-  TT.rows = rows;
-
-  for (i = 0; i < TT.num_new_procs; i++) {
-    if (new_procs[i]) {
-      old_proc = find_old_proc(new_procs[i]->pid);
-      if (old_proc) {
-        new_procs[i]->delta_utime = new_procs[i]->utime - old_proc->utime;
-        new_procs[i]->delta_stime = new_procs[i]->stime - old_proc->stime;
-      } else {
-        new_procs[i]->delta_utime = 0;
-        new_procs[i]->delta_stime = 0;
-      }
-      new_procs[i]->delta_time = new_procs[i]->delta_utime 
-        + new_procs[i]->delta_stime;
-    }
-  }
-
-  total_delta_time = new_cpu[0].total - old_cpu[0].total;
-  if (!total_delta_time) total_delta_time = 1;
-
-  qsort(new_procs, TT.num_new_procs, sizeof(struct proc_info *), proc_cmp);
-
-  //Memory details
-  sysinfo(&info);
-  info.totalram *= info.mem_unit;
-  info.freeram *= info.mem_unit;
-  info.sharedram *= info.mem_unit;
-  info.bufferram *= info.mem_unit;
-
-  rows -= print_header(&info, cols);
- 
-  if (TT.m_flag) {
-    sprintf(toybuf, "%5s %5s %5s %5s %5s %5s %5s %5s %s", "PID", "VSZ", "VSZRW",
-        "RSS", "(SHR)", "DIRTY", "(SHR)", "STACK", "COMMAND");
-    toybuf[11 + TT.cmp_field*6] = (TT.reverse)?'_':'^'; //11 for PID,VSZ fields
-  } else sprintf(toybuf, "%5s %5s %-8s %4s %5s %5s %4s %5s %s", "PID", "PPID", 
-      "USER", "STAT", "VSZ", "%VSZ", "CPU" , "%CPU", "COMMAND");
-
-  printf((toys.optflags & FLAG_b)?"%.*s\n":"\033[7m%.*s\033[0m\n",cols, toybuf);
-  rows--;
-  for (i = TT.scroll_offset; i < TT.num_new_procs; i++) {
-    j = 0;
-    proc = new_procs[i];
-
-    user  = getpwuid(proc->uid);
-    if (user && user->pw_name) {
-      user_str = user->pw_name;
-    } else {
-      snprintf(user_buf, 20, "%d", proc->uid);
-      user_str = user_buf;
-    }
-
-    if (!TT.m_flag )
-    {
-      float vss_percentage = (float)(proc->vss)/info.totalram * 100;
-
-      j = sprintf(toybuf, "%5d %5d %-8.8s %-4s",proc->pid, proc->ppid, user_str,
-          proc->state);
-
-      if ((proc->vss >> 10) >= 100000) 
-        j += sprintf(toybuf + j, " %4lum", ((proc->vss >> 10) >> 10));
-      else j += sprintf(toybuf+j, " %5lu", (proc->vss >> 10));
-
-      sprintf(toybuf + j," %5.1f %4d %5s %s", vss_percentage, proc->prs, 
-          show_percent(proc->delta_time, total_delta_time), 
-          ((proc->name[0])? proc->name : proc->tname));
-      printf("%.*s", cols, toybuf);
-    } else {
-      j = sprintf(toybuf, "%5d",proc->pid);
-
-      if ((proc->vss >> 10) >= 100000) 
-        j += sprintf(toybuf + j, " %4lum", ((proc->vss >> 10) >> 10));
-      else j += sprintf(toybuf+j, " %5lu", (proc->vss >> 10));
-      if ((proc->vssrw >>10) >= 100000)
-        j += sprintf(toybuf + j, " %4lum", ((proc->vssrw >> 10) >> 10));
-      else j += sprintf(toybuf+j, " %5lu", (proc->vssrw >> 10)); 
-      if (proc->rss >= 100000)
-        j += sprintf(toybuf + j, " %4lum", ((proc->rss >> 10)));
-      else j += sprintf(toybuf+j, " %5lu", proc->rss);
-      if (proc->rss_shr >= 100000)
-        j += sprintf(toybuf + j, " %4lum", (proc->rss_shr >> 10));
-      else j += sprintf(toybuf+j, " %5lu", proc->rss_shr);
-      if (proc->drt >= 100000)
-        j += sprintf(toybuf + j, " %4lum", (proc->drt >> 10));
-      else j += sprintf(toybuf+j, " %5lu", proc->drt);
-      if (proc->drt_shr >= 100000)
-        j += sprintf(toybuf + j, " %4lum", (proc->drt_shr >> 10));
-      else j += sprintf(toybuf+j, " %5lu", proc->drt_shr);
-      if ((proc->stack >>10) >= 100000)
-        j += sprintf(toybuf + j, " %4lum", ((proc->stack >> 10) >> 10));
-      else j += sprintf(toybuf+j, " %5lu", (proc->stack >> 10));
-      
-      sprintf(toybuf + j," %s",((proc->name[0])? proc->name : proc->tname));
-      printf("%.*s", cols, toybuf);
-    }
-    rows--;
-    if (!rows) {
-      xputc('\r');
-      break; //don't print any more process details.
-    } else xputc('\n');
-  }
-}
-
-/* 
- * Free old processes(displayed in old iteration) in order to 
- * avoid memory leaks
- */
-static void free_procs_arr(struct proc_info **procs) 
-{
-  int i;
-  for (i = 0; procs && procs[i]; i++)
-      free_proc(procs[i]);
-
-  free(procs);
-}
-
-static int numcmp(long long a, long long b) 
-{
-  if (a < b) return (TT.reverse)?-1 : 1;
-  if (a > b) return (TT.reverse)?1 : -1;
-  return 0;
-}
-
-static int top_mem_cmp(const void *a, const void *b)
-{
-  char *pa, *pb;
-
-  int n = offsetof(struct proc_info, vss) + TT.cmp_field * sizeof(unsigned long);
-  pa = *((char **)a); pb = *((char **)b);
-  return numcmp(*(unsigned long*)(pa+n), *(unsigned long*)(pb+n));
-}
-
-static int proc_time_cmp(const void *a, const void *b) 
-{
-  struct proc_info *pa, *pb;
-
-  pa = *((struct proc_info **)a); pb = *((struct proc_info **)b);
-  return numcmp(pa->utime + pa->stime, pb->utime+pa->stime);
-}
-
-/*
- * Function to compare CPU usgae % while displaying processes 
- * according to CPU usage
- */
-static int proc_cpu_cmp(const void *a, const void *b) 
-{
-  struct proc_info *pa, *pb;
-
-  pa = *((struct proc_info **)a); pb = *((struct proc_info **)b);
-  return numcmp(pa->delta_time, pb->delta_time);
-}
-
-/*
- * Function to compare memory taking by a process at the time of 
- * displaying processes according to Memory usage
- */ 
-static int proc_vss_cmp(const void *a, const void *b) 
-{
-  struct proc_info *pa, *pb;
-
-  pa = *((struct proc_info **)a); pb = *((struct proc_info **)b);
-  return numcmp(pa->vss, pb->vss);
-}
-
-static int proc_pid_cmp(const void *a, const void *b) 
-{
-  struct proc_info *pa, *pb;
-
-  pa = *((struct proc_info **)a); pb = *((struct proc_info **)b);
-  return numcmp(pa->pid, pb->pid);
-}
-
-/* Read CPU stats for all the cores, assuming max 8 cores
- * to be present here.
- */
-static void read_cpu_stat()
-{
-  int i;
-  size_t len;
-  char *line = 0, *params = "%lu %lu %lu %lu %lu %lu %lu %lu";
-  FILE *fp = xfopen("/proc/stat", "r");
-
-  for (i = 0; i<=8 && getline(&line, &len, fp) > 0; i++) {
-    if (i) sprintf(toybuf, "cpu%d %s", i-1, params);
-    else sprintf(toybuf, "cpu  %s",  params);
-    len = sscanf(line, toybuf, &new_cpu[i].utime, &new_cpu[i].ntime, 
-        &new_cpu[i].stime, &new_cpu[i].itime, &new_cpu[i].iowtime, 
-        &new_cpu[i].irqtime, &new_cpu[i].sirqtime, &new_cpu[i].steal);
-    if (len == 8) 
-      new_cpu[i].total = new_cpu[i].utime + new_cpu[i].ntime + new_cpu[i].stime
-      + new_cpu[i].itime + new_cpu[i].iowtime + new_cpu[i].irqtime
-      + new_cpu[i].sirqtime + new_cpu[i].steal;
-
-    free(line);
-    line = 0;
-  }
-  fclose(fp);
-}
-
-void top_main(void )
-{
-  int get_key;
-
-  proc_cmp = &proc_cpu_cmp;
-  if ( TT.delay < 0)  TT.delay = 3;
-  if (toys.optflags & FLAG_m) {
-    proc_cmp = &top_mem_cmp;
-    TT.m_flag = 1;
-  }
-
-  sigatexit(signal_handler);
-  read_cpu_stat();
-  get_key = read_input(0);
-
-  while (!(toys.optflags & FLAG_n) || TT.iterations--) {
-    old_procs = new_procs;
-    memcpy(old_cpu, new_cpu, sizeof(old_cpu));
-    read_procs();
-    read_cpu_stat();
-    print_procs();
-    free_procs_arr(old_procs);
-    if ((toys.optflags & FLAG_n) && !TT.iterations) break;
-
-    get_key = read_input(TT.delay);
-    if (get_key == 'q') break;
-
-    switch(get_key) {
-      case 'n':
-        proc_cmp = &proc_pid_cmp;
-        TT.m_flag = 0;
-        break;
-      case 'h':
-        if (!TT.m_flag) TT.threads ^= 1;
-        break;
-      case 'm':
-        proc_cmp = &proc_vss_cmp;
-        TT.m_flag = 0;
-        break;
-      case 'r':
-        TT.reverse ^= 1;
-        break;
-      case 'c':
-      case '1':
-        TT.smp ^= 1;
-        break;
-      case 's':
-        TT.m_flag = 1;
-        TT.cmp_field = (TT.cmp_field + 1) % 7;//7 sort fields, vss,vssrw...
-        proc_cmp = &top_mem_cmp;
-        break;
-      case 'p':
-        proc_cmp = &proc_cpu_cmp;
-        TT.m_flag = 0;
-        break;
-      case 't':
-        proc_cmp = &proc_time_cmp;
-        TT.m_flag = 0;
-        break;
-      case KEY_UP:
-        TT.scroll_offset--;
-        break;
-      case KEY_DOWN:
-        TT.scroll_offset++;
-        break;
-      case KEY_HOME:
-        TT.scroll_offset = 0;
-        break;
-      case  KEY_END:
-        TT.scroll_offset = TT.num_new_procs - TT.rows/2;
-        break;
-      case KEY_PGUP:
-        TT.scroll_offset -= TT.rows/2;
-        break;
-      case KEY_PGDN:
-        TT.scroll_offset += TT.rows/2;
-        break;
-    }
-    if (TT.scroll_offset >= TT.num_new_procs) TT.scroll_offset = TT.num_new_procs-1;
-    if (TT.scroll_offset < 0) TT.scroll_offset = 0;
-  }
-  xputc('\n');
-  if (CFG_TOYBOX_FREE) {
-    free_proc_list(free_procs);
-    free_procs = NULL;
-    free_procs_arr(new_procs);
-    free_proc_list(free_procs);
-  }
-}