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authorRob Landley <rob@landley.net>2006-04-24 23:13:46 +0000
committerRob Landley <rob@landley.net>2006-04-24 23:13:46 +0000
commit997650b9720a3e1302114f0aa37b7625cdf31b85 (patch)
tree4a8b6741846f00409eff470ec3a83ba7afe75b5d
parent56fbd21fa77145486afea2307bcc52b9f05e3154 (diff)
downloadbusybox-997650b9720a3e1302114f0aa37b7625cdf31b85.tar.gz
From Denis Vlasenko:
* CPU% = process[i].ticks/sum(process[i].ticks) * busy_cpu_ticks/total_cpu_ticks * got rid of empty line under "Load average" line   and used last line - +2 visible processes * do not do float conversion of loadavg, just read it as string from /proc * fix display on small screens * dropped unused .stime, .utime fields * a few variables were renamed * style fixes
-rw-r--r--procps/top.c400
1 files changed, 177 insertions, 223 deletions
diff --git a/procps/top.c b/procps/top.c
index d140924d8..a8728df54 100644
--- a/procps/top.c
+++ b/procps/top.c
@@ -52,13 +52,13 @@ static procps_status_t *top; /* Hehe */
static int ntop;
#ifdef CONFIG_FEATURE_USE_TERMIOS
-static int pid_sort (procps_status_t *P, procps_status_t *Q)
+static int pid_sort(procps_status_t *P, procps_status_t *Q)
{
return (Q->pid - P->pid);
}
#endif
-static int mem_sort (procps_status_t *P, procps_status_t *Q)
+static int mem_sort(procps_status_t *P, procps_status_t *Q)
{
return (int)(Q->rss - P->rss);
}
@@ -68,12 +68,12 @@ static int mem_sort (procps_status_t *P, procps_status_t *Q)
#define sort_depth 3
static cmp_t sort_function[sort_depth];
-static int pcpu_sort (procps_status_t *P, procps_status_t *Q)
+static int pcpu_sort(procps_status_t *P, procps_status_t *Q)
{
return (Q->pcpu - P->pcpu);
}
-static int time_sort (procps_status_t *P, procps_status_t *Q)
+static int time_sort(procps_status_t *P, procps_status_t *Q)
{
return (int)((Q->stime + Q->utime) - (P->stime + P->utime));
}
@@ -81,7 +81,7 @@ static int time_sort (procps_status_t *P, procps_status_t *Q)
static int mult_lvl_cmp(void* a, void* b) {
int i, cmp_val;
- for(i = 0; i < sort_depth; i++) {
+ for (i = 0; i < sort_depth; i++) {
cmp_val = (*sort_function[i])(a, b);
if (cmp_val != 0)
return cmp_val;
@@ -94,199 +94,105 @@ static int mult_lvl_cmp(void* a, void* b) {
struct save_hist {
int ticks;
int pid;
- int utime;
- int stime;
};
/*
* Calculates percent cpu usage for each task.
*/
-static struct save_hist *save_history;
+static struct save_hist *prev_hist;
+static int prev_hist_count;
+/* static int hist_iterations; */
-static unsigned long Hertz;
-/***********************************************************************
- * Some values in /proc are expressed in units of 1/HZ seconds, where HZ
- * is the kernel clock tick rate. One of these units is called a jiffy.
- * The HZ value used in the kernel may vary according to hacker desire.
- * According to Linus Torvalds, this is not true. He considers the values
- * in /proc as being in architecture-dependent units that have no relation
- * to the kernel clock tick rate. Examination of the kernel source code
- * reveals that opinion as wishful thinking.
- *
- * In any case, we need the HZ constant as used in /proc. (the real HZ value
- * may differ, but we don't care) There are several ways we could get HZ:
- *
- * 1. Include the kernel header file. If it changes, recompile this library.
- * 2. Use the sysconf() function. When HZ changes, recompile the C library!
- * 3. Ask the kernel. This is obviously correct...
- *
- * Linus Torvalds won't let us ask the kernel, because he thinks we should
- * not know the HZ value. Oh well, we don't have to listen to him.
- * Someone smuggled out the HZ value. :-)
- *
- * This code should work fine, even if Linus fixes the kernel to match his
- * stated behavior. The code only fails in case of a partial conversion.
- *
- */
-
-#define file_to_buf_bufsize 80
-static inline int file_to_buf(char *buf, const char *filename, int fd)
-{
- int sz;
+static unsigned total_pcpu;
+/* static unsigned long total_rss; */
- if (fd == -1) {
- fd = open(filename, O_RDONLY);
- if(fd == -1)
- bb_perror_msg_and_die("is /proc mounted?");
- } else {
- lseek(fd, 0L, SEEK_SET);
- }
- sz = read(fd, buf, file_to_buf_bufsize - 1);
- if (sz < 0) {
- bb_perror_msg_and_die("%s", filename);
- }
- buf[sz] = '\0';
- return fd;
-}
+struct jiffy_counts {
+ unsigned long long usr,nic,sys,idle,iowait,irq,softirq,steal;
+ unsigned long long total;
+ unsigned long long busy;
+};
+static struct jiffy_counts jif, prev_jif;
-static void init_Hertz_value(void)
+static void get_jiffy_counts(void)
{
- unsigned long user_j, nice_j, sys_j, other_j; /* jiffies (clock ticks) */
- double up_1, up_2, seconds;
- unsigned long jiffies, h;
- char buf[80];
- int uptime_fd = -1;
- int stat_fd = -1;
-
- long smp_num_cpus = sysconf(_SC_NPROCESSORS_CONF);
-
- if(smp_num_cpus<1) smp_num_cpus=1;
-
- do {
- uptime_fd = file_to_buf(buf, "uptime", uptime_fd);
- up_1 = strtod(buf, 0);
- stat_fd = file_to_buf(buf, "stat", stat_fd);
- sscanf(buf, "cpu %lu %lu %lu %lu", &user_j, &nice_j, &sys_j, &other_j);
- uptime_fd = file_to_buf(buf, "uptime", uptime_fd);
- up_2 = strtod(buf, 0);
- } while((long)( (up_2-up_1)*1000.0/up_1 )); /* want under 0.1% error */
- close(uptime_fd);
- close(stat_fd);
-
- jiffies = user_j + nice_j + sys_j + other_j;
- seconds = (up_1 + up_2) / 2;
- h = (unsigned long)( (double)jiffies/seconds/smp_num_cpus );
- /* actual values used by 2.4 kernels: 32 64 100 128 1000 1024 1200 */
- switch(h) {
- case 30 ... 34 : Hertz = 32; break; /* ia64 emulator */
- case 48 ... 52 : Hertz = 50; break;
- case 58 ... 62 : Hertz = 60; break;
- case 63 ... 65 : Hertz = 64; break; /* StrongARM /Shark */
- case 95 ... 105 : Hertz = 100; break; /* normal Linux */
- case 124 ... 132 : Hertz = 128; break; /* MIPS, ARM */
- case 195 ... 204 : Hertz = 200; break; /* normal << 1 */
- case 253 ... 260 : Hertz = 256; break;
- case 295 ... 304 : Hertz = 300; break; /* 3 cpus */
- case 393 ... 408 : Hertz = 400; break; /* normal << 2 */
- case 495 ... 504 : Hertz = 500; break; /* 5 cpus */
- case 595 ... 604 : Hertz = 600; break; /* 6 cpus */
- case 695 ... 704 : Hertz = 700; break; /* 7 cpus */
- case 790 ... 808 : Hertz = 800; break; /* normal << 3 */
- case 895 ... 904 : Hertz = 900; break; /* 9 cpus */
- case 990 ... 1010 : Hertz = 1000; break; /* ARM */
- case 1015 ... 1035 : Hertz = 1024; break; /* Alpha, ia64 */
- case 1095 ... 1104 : Hertz = 1100; break; /* 11 cpus */
- case 1180 ... 1220 : Hertz = 1200; break; /* Alpha */
- default:
- /* If 32-bit or big-endian (not Alpha or ia64), assume HZ is 100. */
- Hertz = (sizeof(long)==sizeof(int) || htons(999)==999) ? 100UL : 1024UL;
+ FILE* fp = bb_xfopen("stat", "r");
+ prev_jif = jif;
+ if (fscanf(fp, "cpu %lld %lld %lld %lld %lld %lld %lld %lld",
+ &jif.usr,&jif.nic,&jif.sys,&jif.idle,
+ &jif.iowait,&jif.irq,&jif.softirq,&jif.steal) < 4) {
+ bb_error_msg_and_die("failed to read 'stat'");
}
+ fclose(fp);
+ jif.total = jif.usr + jif.nic + jif.sys + jif.idle
+ + jif.iowait + jif.irq + jif.softirq + jif.steal;
+ /* procps 2.x does not count iowait as busy time */
+ jif.busy = jif.total - jif.idle - jif.iowait;
}
static void do_stats(void)
{
- struct timeval t;
- static struct timeval oldtime;
- struct timezone timez;
- float elapsed_time;
-
procps_status_t *cur;
- int total_time, i, n;
- static int prev_count;
- int systime, usrtime, pid;
-
- struct save_hist *New_save_hist;
+ int pid, total_time, i, last_i, n;
+ struct save_hist *new_hist;
- /*
- * Finds the current time (in microseconds) and calculates the time
- * elapsed since the last update.
- */
- gettimeofday(&t, &timez);
- elapsed_time = (t.tv_sec - oldtime.tv_sec)
- + (float) (t.tv_usec - oldtime.tv_usec) / 1000000.0;
- oldtime.tv_sec = t.tv_sec;
- oldtime.tv_usec = t.tv_usec;
-
- New_save_hist = alloca(sizeof(struct save_hist)*ntop);
+ get_jiffy_counts();
+ total_pcpu = 0;
+ /* total_rss = 0; */
+ new_hist = xmalloc(sizeof(struct save_hist)*ntop);
/*
* Make a pass through the data to get stats.
*/
- for(n = 0; n < ntop; n++) {
+ /* hist_iterations = 0; */
+ i = 0;
+ for (n = 0; n < ntop; n++) {
cur = top + n;
/*
* Calculate time in cur process. Time is sum of user time
- * (usrtime) plus system time (systime).
+ * and system time
*/
- systime = cur->stime;
- usrtime = cur->utime;
pid = cur->pid;
- total_time = systime + usrtime;
- New_save_hist[n].ticks = total_time;
- New_save_hist[n].pid = pid;
- New_save_hist[n].stime = systime;
- New_save_hist[n].utime = usrtime;
+ total_time = cur->stime + cur->utime;
+ new_hist[n].ticks = total_time;
+ new_hist[n].pid = pid;
/* find matching entry from previous pass */
- for (i = 0; i < prev_count; i++) {
- if (save_history[i].pid == pid) {
- total_time -= save_history[i].ticks;
- systime -= save_history[i].stime;
- usrtime -= save_history[i].utime;
+ cur->pcpu = 0;
+ /* do not start at index 0, continue at last used one
+ * (brought hist_iterations from ~14000 down to 172) */
+ last_i = i;
+ if (prev_hist_count) do {
+ if (prev_hist[i].pid == pid) {
+ cur->pcpu = total_time - prev_hist[i].ticks;
break;
}
- }
-
- /*
- * Calculate percent cpu time for cur task.
- */
- i = (total_time * 10 * 100/Hertz) / elapsed_time;
- if (i > 999)
- i = 999;
- cur->pcpu = i;
+ i = (i+1) % prev_hist_count;
+ /* hist_iterations++; */
+ } while (i != last_i);
+ total_pcpu += cur->pcpu;
+ /* total_rss += cur->rss; */
}
/*
* Save cur frame's information.
*/
- free(save_history);
- save_history = memcpy(xmalloc(sizeof(struct save_hist)*n), New_save_hist,
- sizeof(struct save_hist)*n);
- prev_count = n;
- qsort(top, n, sizeof(procps_status_t), (void*)mult_lvl_cmp);
+ free(prev_hist);
+ prev_hist = new_hist;
+ prev_hist_count = ntop;
}
#else
static cmp_t sort_function;
#endif /* CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE */
/* display generic info (meminfo / loadavg) */
-static unsigned long display_generic(void)
+static unsigned long display_generic(int scr_width)
{
FILE *fp;
char buf[80];
- float avg1, avg2, avg3;
+ char scrbuf[80];
+ char *end;
unsigned long total, used, mfree, shared, buffers, cached;
unsigned int needs_conversion = 1;
@@ -332,11 +238,14 @@ static unsigned long display_generic(void)
}
fclose(fp);
- /* read load average */
+ /* read load average as a string */
fp = bb_xfopen("loadavg", "r");
- if (fscanf(fp, "%f %f %f", &avg1, &avg2, &avg3) != 3) {
- bb_error_msg_and_die("failed to read 'loadavg'");
- }
+ buf[0] = '\0';
+ fgets(buf, sizeof(buf), fp);
+ end = strchr(buf, ' ');
+ if (end) end = strchr(end+1, ' ');
+ if (end) end = strchr(end+1, ' ');
+ if (end) *end = '\0';
fclose(fp);
if (needs_conversion) {
@@ -351,59 +260,110 @@ static unsigned long display_generic(void)
/* output memory info and load average */
/* clear screen & go to top */
- printf("\e[H\e[J" "Mem: "
- "%ldK used, %ldK free, %ldK shrd, %ldK buff, %ldK cached\n",
+ if (scr_width > sizeof(scrbuf))
+ scr_width = sizeof(scrbuf);
+ snprintf(scrbuf, scr_width,
+ "Mem: %ldK used, %ldK free, %ldK shrd, %ldK buff, %ldK cached",
used, mfree, shared, buffers, cached);
- printf("Load average: %.2f, %.2f, %.2f "
- "(State: S=sleeping R=running, W=waiting)\n",
- avg1, avg2, avg3);
+ printf("\e[H\e[J%s\n", scrbuf);
+ snprintf(scrbuf, scr_width,
+ "Load average: %s (Status: S=sleeping R=running, W=waiting)", buf);
+ printf("%s\n", scrbuf);
+
return total;
}
/* display process statuses */
-static void display_status(int count, int col)
+static void display_status(int count, int scr_width)
{
+ enum {
+ bits_per_int = sizeof(int)*8
+ };
+
procps_status_t *s = top;
char rss_str_buf[8];
- unsigned long total_memory = display_generic();
+ unsigned long total_memory = display_generic(scr_width); /* or use total_rss? */
+ unsigned pmem_shift, pmem_scale;
#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
+ unsigned pcpu_shift, pcpu_scale;
+
/* what info of the processes is shown */
- printf("\n\e[7m PID USER STATUS RSS PPID %%CPU %%MEM COMMAND\e[0m\n");
+ printf("\e[7m%.*s\e[0m", scr_width,
+ " PID USER STATUS RSS PPID %CPU %MEM COMMAND");
+#define MIN_WIDTH \
+ sizeof( " PID USER STATUS RSS PPID %CPU %MEM C")
#else
- printf("\n\e[7m PID USER STATUS RSS PPID %%MEM COMMAND\e[0m\n");
+ printf("\e[7m%.*s\e[0m", scr_width,
+ " PID USER STATUS RSS PPID %MEM COMMAND");
+#define MIN_WIDTH \
+ sizeof( " PID USER STATUS RSS PPID %MEM C")
#endif
- while (count--) {
- char *namecmd = s->short_cmd;
- int pmem;
+ /*
+ * MEM% = s->rss/MemTotal
+ */
+ pmem_shift = bits_per_int-11;
+ pmem_scale = 1000*(1U<<(bits_per_int-11)) / total_memory;
+ /* s->rss is in kb. we want (s->rss * pmem_scale) to never overflow */
+ while (pmem_scale >= 512) {
+ pmem_scale /= 4;
+ pmem_shift -= 2;
+ }
+#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
+ /*
+ * CPU% = s->pcpu/sum(s->pcpu) * busy_cpu_ticks/total_cpu_ticks
+ * (pcpu is delta of sys+user time between samples)
+ */
+ /* (jif.xxx - prev_jif.xxx) and s->pcpu are
+ * in 0..~64000 range (HZ*update_interval).
+ * we assume that unsigned is at least 32-bit.
+ */
+ pcpu_shift = 6;
+ pcpu_scale = (1000*64*(uint16_t)(jif.busy-prev_jif.busy) ? : 1);
+ while (pcpu_scale < (1U<<(bits_per_int-2))) {
+ pcpu_scale *= 4;
+ pcpu_shift += 2;
+ }
+ pcpu_scale /= ( (uint16_t)(jif.total-prev_jif.total)*total_pcpu ? : 1);
+ /* we want (s->pcpu * pcpu_scale) to never overflow */
+ while (pcpu_scale >= 1024) {
+ pcpu_scale /= 4;
+ pcpu_shift -= 2;
+ }
+ /* printf(" pmem_scale=%u pcpu_scale=%u ", pmem_scale, pcpu_scale); */
+#endif
- pmem = 1000.0 * s->rss / total_memory;
- if (pmem > 999) pmem = 999;
+ while (count--) {
+ div_t pmem = div( (s->rss*pmem_scale) >> pmem_shift, 10);
+ int col = scr_width+1;
- if(s->rss > 10*1024)
+ if (s->rss >= 100*1024)
sprintf(rss_str_buf, "%6ldM", s->rss/1024);
else
sprintf(rss_str_buf, "%7ld", s->rss);
#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
- printf("%5d %-8s %s %s %5d %2d.%d %2u.%u ",
- s->pid, s->user, s->state, rss_str_buf, s->ppid,
- s->pcpu/10, s->pcpu%10, pmem/10, pmem%10);
+ {
+ div_t pcpu = div((s->pcpu*pcpu_scale) >> pcpu_shift, 10);
+ col -= printf("\n%5d %-8s %s %s%6d%3u.%c%3u.%c ",
+ s->pid, s->user, s->state, rss_str_buf, s->ppid,
+ pcpu.quot, '0'+pcpu.rem, pmem.quot, '0'+pmem.rem);
+ }
#else
- printf("%5d %-8s %s %s %5d %2u.%u ",
+ col -= printf("\n%5d %-8s %s %s%6d%3u.%c ",
s->pid, s->user, s->state, rss_str_buf, s->ppid,
- pmem/10, pmem%10);
+ pmem.quot, '0'+pmem.rem););
#endif
- if((int)strlen(namecmd) > col)
- namecmd[col] = 0;
- printf("%s", namecmd);
- if(count)
- putchar('\n');
- else
- fflush(stdout);
+ if (col>0)
+ printf("%.*s", col, s->short_cmd);
+ /* printf(" %d/%d %lld/%lld", s->pcpu, total_pcpu,
+ jif.busy - prev_jif.busy, jif.total - prev_jif.total); */
s++;
}
+ /* printf(" %d", hist_iterations); */
+ putchar('\r');
+ fflush(stdout);
}
static void clearmems(void)
@@ -427,7 +387,7 @@ static void reset_term(void)
#ifdef CONFIG_FEATURE_CLEAN_UP
clearmems();
#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
- free(save_history);
+ free(prev_hist);
#endif
#endif /* CONFIG_FEATURE_CLEAN_UP */
}
@@ -453,21 +413,13 @@ int top_main(int argc, char **argv)
/* do normal option parsing */
opt = bb_getopt_ulflags(argc, argv, "d:", &sinterval);
- if((opt & 1)) {
+ if ((opt & 1)) {
interval = atoi(sinterval);
} else {
/* Default update rate is 5 seconds */
interval = 5;
}
- /* Default to 25 lines - 5 lines for status */
- lines = 25 - 5;
- /* Default CMD format size */
-#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
- col = 35 - 6;
-#else
- col = 35;
-#endif
/* change to /proc */
bb_xchdir("/proc");
#ifdef CONFIG_FEATURE_USE_TERMIOS
@@ -477,24 +429,14 @@ int top_main(int argc, char **argv)
/* Turn off echoing */
new_settings.c_lflag &= ~(ECHO | ECHONL);
- signal (SIGTERM, sig_catcher);
- sigaction (SIGTERM, (struct sigaction *) 0, &sa);
+ signal(SIGTERM, sig_catcher);
+ sigaction(SIGTERM, (struct sigaction *) 0, &sa);
sa.sa_flags |= SA_RESTART;
sa.sa_flags &= ~SA_INTERRUPT;
- sigaction (SIGTERM, &sa, (struct sigaction *) 0);
- sigaction (SIGINT, &sa, (struct sigaction *) 0);
+ sigaction(SIGTERM, &sa, (struct sigaction *) 0);
+ sigaction(SIGINT, &sa, (struct sigaction *) 0);
tcsetattr(0, TCSANOW, (void *) &new_settings);
atexit(reset_term);
-
- get_terminal_width_height(0, &col, &lines);
- if (lines > 4) {
- lines -= 4;
-#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
- col = col - 80 + 35 - 6;
-#else
- col = col - 80 + 35;
-#endif
- }
#endif /* CONFIG_FEATURE_USE_TERMIOS */
#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
@@ -506,9 +448,21 @@ int top_main(int argc, char **argv)
#endif /* CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE */
while (1) {
- /* read process IDs & status for all the processes */
- procps_status_t * p;
+ procps_status_t *p;
+ /* Default to 25 lines - 5 lines for status */
+ lines = 24 - 3;
+ col = 79;
+#ifdef CONFIG_FEATURE_USE_TERMIOS
+ get_terminal_width_height(0, &col, &lines);
+ if (lines < 5 || col < MIN_WIDTH) {
+ sleep(interval);
+ continue;
+ }
+ lines -= 3;
+#endif /* CONFIG_FEATURE_USE_TERMIOS */
+
+ /* read process IDs & status for all the processes */
while ((p = procps_scan(0)) != 0) {
int n = ntop;
@@ -519,14 +473,14 @@ int top_main(int argc, char **argv)
bb_error_msg_and_die("Can't find process info in /proc");
}
#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
- if(!Hertz) {
- init_Hertz_value();
+ if (!prev_hist_count) {
do_stats();
sleep(1);
clearmems();
continue;
}
do_stats();
+ qsort(top, ntop, sizeof(procps_status_t), (void*)mult_lvl_cmp);
#else
qsort(top, ntop, sizeof(procps_status_t), (void*)sort_function);
#endif /* CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE */
@@ -539,16 +493,16 @@ int top_main(int argc, char **argv)
#ifdef CONFIG_FEATURE_USE_TERMIOS
tv.tv_sec = interval;
tv.tv_usec = 0;
- FD_ZERO (&readfds);
- FD_SET (0, &readfds);
- select (1, &readfds, NULL, NULL, &tv);
- if (FD_ISSET (0, &readfds)) {
- if (read (0, &c, 1) <= 0) { /* signal */
+ FD_ZERO(&readfds);
+ FD_SET(0, &readfds);
+ select(1, &readfds, NULL, NULL, &tv);
+ if (FD_ISSET(0, &readfds)) {
+ if (read(0, &c, 1) <= 0) { /* signal */
return EXIT_FAILURE;
}
- if(c == 'q' || c == initial_settings.c_cc[VINTR])
+ if (c == 'q' || c == initial_settings.c_cc[VINTR])
break;
- if(c == 'M') {
+ if (c == 'M') {
#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
sort_function[0] = mem_sort;
sort_function[1] = pcpu_sort;
@@ -558,18 +512,18 @@ int top_main(int argc, char **argv)
#endif
}
#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
- if(c == 'P') {
+ if (c == 'P') {
sort_function[0] = pcpu_sort;
sort_function[1] = mem_sort;
sort_function[2] = time_sort;
}
- if(c == 'T') {
+ if (c == 'T') {
sort_function[0] = time_sort;
sort_function[1] = mem_sort;
sort_function[2] = pcpu_sort;
}
#endif
- if(c == 'N') {
+ if (c == 'N') {
#ifdef CONFIG_FEATURE_TOP_CPU_USAGE_PERCENTAGE
sort_function[0] = pid_sort;
#else
@@ -582,7 +536,7 @@ int top_main(int argc, char **argv)
#endif /* CONFIG_FEATURE_USE_TERMIOS */
clearmems();
}
- if(ENABLE_FEATURE_CLEAN_UP)
+ if (ENABLE_FEATURE_CLEAN_UP)
clearmems();
putchar('\n');
return EXIT_SUCCESS;