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-rw-r--r--toys/pending/top.c853
1 files changed, 853 insertions, 0 deletions
diff --git a/toys/pending/top.c b/toys/pending/top.c
new file mode 100644
index 00000000..4aca95f6
--- /dev/null
+++ b/toys/pending/top.c
@@ -0,0 +1,853 @@
+/* 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;
+};
+
+enum CODE{
+ KEY_UP = 0x100, KEY_DOWN, KEY_HOME,
+ KEY_END, KEY_PAGEUP, KEY_PAGEDN,
+};
+
+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_PAGEUP},
+ {"[6~", KEY_PAGEDN}, {"[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_PAGEUP:
+ TT.scroll_offset -= TT.rows/2;
+ break;
+ case KEY_PAGEDN:
+ 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);
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-02 07:11:59 +0000