*
* This is written specifically for the linux /proc/<PID>/stat(m)
* files format.
-
+ *
* This reads the PIDs of all processes and their status and shows
* the status of processes (first ones that fit to screen) at given
* intervals.
* - CPU where Process was last seen running
* (to see effect of sched_setaffinity() etc)
* - CPU Time Split (idle/IO/wait etc) PER CPU
- */
-
-/* Original code Copyrights */
-/*
+ *
* Copyright (c) 1992 Branko Lankester
* Copyright (c) 1992 Roger Binns
* Copyright (C) 1994-1996 Charles L. Blake.
* Copyright (C) 1992-1998 Michael K. Johnson
- * May be distributed under the conditions of the
- * GNU Library General Public License
+ *
+ * Licensed under GPLv2, see file LICENSE in this tarball for details.
*/
#include "libbb.h"
} top_status_t;
typedef struct jiffy_counts_t {
- unsigned long long usr,nic,sys,idle,iowait,irq,softirq,steal;
+ /* Linux 2.4.x has only first four */
+ unsigned long long usr, nic, sys, idle;
+ unsigned long long iowait, irq, softirq, steal;
unsigned long long total;
unsigned long long busy;
} jiffy_counts_t;
int num_cpus;
#endif
char line_buf[80];
-};
-
+}; //FIX_ALIASING; - large code growth
enum { LINE_BUF_SIZE = COMMON_BUFSIZE - offsetof(struct globals, line_buf) };
-
#define G (*(struct globals*)&bb_common_bufsiz1)
#define INIT_G() do { \
struct G_sizecheck { \
OPT_d = (1 << 0),
OPT_n = (1 << 1),
OPT_b = (1 << 2),
- OPT_EOF = (1 << 3), /* pseudo: "we saw EOF in stdin" */
+ OPT_m = (1 << 3),
+ OPT_EOF = (1 << 4), /* pseudo: "we saw EOF in stdin" */
};
#define OPT_BATCH_MODE (option_mask32 & OPT_b)
return 0;
}
-/* NOINLINE so that complier doesn't unfold the call
- * causing multiple copies of the arithmatic instrns
- */
static NOINLINE int read_cpu_jiffy(FILE *fp, jiffy_counts_t *p_jif)
{
#if !ENABLE_FEATURE_TOP_SMP_CPU
- static const char fmt[] = "cpu %lld %lld %lld %lld %lld %lld %lld %lld";
+ static const char fmt[] = "cpu %llu %llu %llu %llu %llu %llu %llu %llu";
#else
- static const char fmt[] = "cp%*s %lld %lld %lld %lld %lld %lld %lld %lld";
+ static const char fmt[] = "cp%*s %llu %llu %llu %llu %llu %llu %llu %llu";
#endif
int ret;
&p_jif->usr, &p_jif->nic, &p_jif->sys, &p_jif->idle,
&p_jif->iowait, &p_jif->irq, &p_jif->softirq,
&p_jif->steal);
- if (ret > 4) {
+ if (ret >= 4) {
p_jif->total = p_jif->usr + p_jif->nic + p_jif->sys + p_jif->idle
+ p_jif->iowait + p_jif->irq + p_jif->softirq + p_jif->steal;
/* procps 2.x does not count iowait as busy time */
unsigned total_diff;
jiffy_counts_t *p_jif, *p_prev_jif;
int i;
-
-#if ENABLE_FEATURE_TOP_SMP_CPU
+# if ENABLE_FEATURE_TOP_SMP_CPU
int n_cpu_lines;
-#endif
+# endif
/* using (unsigned) casts to make operations cheaper */
-#define CALC_TOT_DIFF ((unsigned)(p_jif->total - p_prev_jif->total) ? : 1)
-
-#if ENABLE_FEATURE_TOP_DECIMALS
-#define CALC_STAT(xxx) char xxx[8]
-#define SHOW_STAT(xxx) fmt_100percent_8(xxx, (unsigned)(p_jif->xxx - p_prev_jif->xxx), total_diff)
-#define FMT "%s"
-#else
-#define CALC_STAT(xxx) unsigned xxx = 100 * (unsigned)(p_jif->xxx - p_prev_jif->xxx) / total_diff
-#define SHOW_STAT(xxx) xxx
-#define FMT "%4u%% "
-#endif
+# define CALC_TOTAL_DIFF do { \
+ total_diff = (unsigned)(p_jif->total - p_prev_jif->total); \
+ if (total_diff == 0) total_diff = 1; \
+} while (0)
-#if !ENABLE_FEATURE_TOP_SMP_CPU
+# if ENABLE_FEATURE_TOP_DECIMALS
+# define CALC_STAT(xxx) char xxx[8]
+# define SHOW_STAT(xxx) fmt_100percent_8(xxx, (unsigned)(p_jif->xxx - p_prev_jif->xxx), total_diff)
+# define FMT "%s"
+# else
+# define CALC_STAT(xxx) unsigned xxx = 100 * (unsigned)(p_jif->xxx - p_prev_jif->xxx) / total_diff
+# define SHOW_STAT(xxx) xxx
+# define FMT "%4u%% "
+# endif
+
+# if !ENABLE_FEATURE_TOP_SMP_CPU
{
i = 1;
p_jif = &cur_jif;
p_prev_jif = &prev_jif;
-#else
+# else
/* Loop thru CPU(s) */
n_cpu_lines = smp_cpu_info ? num_cpus : 1;
if (n_cpu_lines > *lines_rem_p)
for (i = 0; i < n_cpu_lines; i++) {
p_jif = &cpu_jif[i];
p_prev_jif = &cpu_prev_jif[i];
-#endif
- total_diff = CALC_TOT_DIFF;
+# endif
+ CALC_TOTAL_DIFF;
{ /* Need a block: CALC_STAT are declarations */
CALC_STAT(usr);
snprintf(scrbuf, scr_width,
/* Barely fits in 79 chars when in "decimals" mode. */
-#if ENABLE_FEATURE_TOP_SMP_CPU
+# if ENABLE_FEATURE_TOP_SMP_CPU
"CPU%s:"FMT"usr"FMT"sys"FMT"nic"FMT"idle"FMT"io"FMT"irq"FMT"sirq",
(smp_cpu_info ? utoa(i) : ""),
-#else
+# else
"CPU:"FMT"usr"FMT"sys"FMT"nic"FMT"idle"FMT"io"FMT"irq"FMT"sirq",
-#endif
+# endif
SHOW_STAT(usr), SHOW_STAT(sys), SHOW_STAT(nic), SHOW_STAT(idle),
SHOW_STAT(iowait), SHOW_STAT(irq), SHOW_STAT(softirq)
/*, SHOW_STAT(steal) - what is this 'steal' thing? */
puts(scrbuf);
}
}
-#undef SHOW_STAT
-#undef CALC_STAT
-#undef FMT
+# undef SHOW_STAT
+# undef CALC_STAT
+# undef FMT
*lines_rem_p -= i;
}
#else /* !ENABLE_FEATURE_TOP_CPU_GLOBAL_PERCENTS */
-#define display_cpus(scr_width, scrbuf, lines_rem) ((void)0)
+# define display_cpus(scr_width, scrbuf, lines_rem) ((void)0)
#endif
static unsigned long display_header(int scr_width, int *lines_rem_p)
* expensive divides with multiply and shift */
unsigned pmem_shift, pmem_scale, pmem_half;
#if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
+ unsigned tmp_unsigned;
unsigned pcpu_shift, pcpu_scale, pcpu_half;
unsigned busy_jifs;
#endif
/* what info of the processes is shown */
printf(OPT_BATCH_MODE ? "%.*s" : "\e[7m%.*s\e[0m", scr_width,
" PID PPID USER STAT VSZ %MEM"
-#if ENABLE_FEATURE_TOP_SMP_PROCESS
- " CPU"
-#endif
-#if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
- " %CPU"
-#endif
+ IF_FEATURE_TOP_SMP_PROCESS(" CPU")
+ IF_FEATURE_TOP_CPU_USAGE_PERCENTAGE(" %CPU")
" COMMAND");
lines_rem--;
#if ENABLE_FEATURE_TOP_DECIMALS
-#define UPSCALE 1000
-#define CALC_STAT(name, val) div_t name = div((val), 10)
-#define SHOW_STAT(name) name.quot, '0'+name.rem
-#define FMT "%3u.%c"
+# define UPSCALE 1000
+# define CALC_STAT(name, val) div_t name = div((val), 10)
+# define SHOW_STAT(name) name.quot, '0'+name.rem
+# define FMT "%3u.%c"
#else
-#define UPSCALE 100
-#define CALC_STAT(name, val) unsigned name = (val)
-#define SHOW_STAT(name) name
-#define FMT "%4u%%"
+# define UPSCALE 100
+# define CALC_STAT(name, val) unsigned name = (val)
+# define SHOW_STAT(name) name
+# define FMT "%4u%%"
#endif
/*
* MEM% = s->vsz/MemTotal
* we assume that unsigned is at least 32-bit.
*/
pcpu_shift = 6;
- pcpu_scale = (UPSCALE*64 * (uint16_t)busy_jifs ? : 1);
+ pcpu_scale = UPSCALE*64 * (uint16_t)busy_jifs;
+ if (pcpu_scale == 0)
+ pcpu_scale = 1;
while (pcpu_scale < (1U << (BITS_PER_INT-2))) {
pcpu_scale *= 4;
pcpu_shift += 2;
}
- pcpu_scale /= ( (uint16_t)(cur_jif.total - prev_jif.total) * total_pcpu ? : 1);
+ tmp_unsigned = (uint16_t)(cur_jif.total - prev_jif.total) * total_pcpu;
+ if (tmp_unsigned != 0)
+ pcpu_scale /= tmp_unsigned;
/* we want (s->pcpu * pcpu_scale) to never overflow */
while (pcpu_scale >= 1024) {
pcpu_scale /= 4;
/* PID PPID USER STAT VSZ %MEM [%CPU] COMMAND */
col = snprintf(line_buf, scr_width,
"\n" "%5u%6u %-8.8s %s%s" FMT
-#if ENABLE_FEATURE_TOP_SMP_PROCESS
- " %3d"
-#endif
-#if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
- FMT
-#endif
+ IF_FEATURE_TOP_SMP_PROCESS(" %3d")
+ IF_FEATURE_TOP_CPU_USAGE_PERCENTAGE(FMT)
" ",
s->pid, s->ppid, get_cached_username(s->uid),
s->state, vsz_str_buf,
SHOW_STAT(pmem)
-#if ENABLE_FEATURE_TOP_SMP_PROCESS
- , s->last_seen_on_cpu
-#endif
-#if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
- , SHOW_STAT(pcpu)
-#endif
+ IF_FEATURE_TOP_SMP_PROCESS(, s->last_seen_on_cpu)
+ IF_FEATURE_TOP_CPU_USAGE_PERCENTAGE(, SHOW_STAT(pcpu))
);
if ((int)(col + 1) < scr_width)
- read_cmdline(line_buf + col, scr_width - col - 1, s->pid, s->comm);
+ read_cmdline(line_buf + col, scr_width - col, s->pid, s->comm);
fputs(line_buf, stdout);
/* printf(" %d/%d %lld/%lld", s->pcpu, total_pcpu,
cur_jif.busy - prev_jif.busy, cur_jif.total - prev_jif.total); */
}
/* printf(" %d", hist_iterations); */
bb_putchar(OPT_BATCH_MODE ? '\n' : '\r');
- fflush(stdout);
+ fflush_all();
}
#undef UPSCALE
#undef SHOW_STAT
}
#if ENABLE_FEATURE_USE_TERMIOS
-#include <termios.h>
-#include <signal.h>
static void reset_term(void)
{
- tcsetattr(0, TCSANOW, &initial_settings);
+ tcsetattr_stdin_TCSANOW(&initial_settings);
if (ENABLE_FEATURE_CLEAN_UP) {
clearmems();
-#if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
+# if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
free(prev_hist);
-#endif
+# endif
}
}
return inverted ? -n : n;
}
-/* Cut "NNNN " out of " NNNN kb" */
+/* Cut "NNNN" out of " NNNN kb" */
static char *grab_number(char *str, const char *match, unsigned sz)
{
if (strncmp(str, match, sz) == 0) {
str = skip_whitespace(str + sz);
- (skip_non_whitespace(str))[1] = '\0';
+ (skip_non_whitespace(str))[0] = '\0';
return xstrdup(str);
}
return NULL;
}
fclose(fp);
-#define S(s) (s ? s : "0 ")
+#define S(s) (s ? s : "0")
snprintf(linebuf, sizeof(linebuf),
- "Mem %stotal %sanon %smap %sfree",
+ "Mem total:%s anon:%s map:%s free:%s",
S(total), S(anon), S(map), S(mfree));
printf(OPT_BATCH_MODE ? "%.*s\n" : "\e[H\e[J%.*s\n", scr_width, linebuf);
snprintf(linebuf, sizeof(linebuf),
- " %sslab %sbuf %scache %sdirty %swrite",
+ " slab:%s buf:%s cache:%s dirty:%s write:%s",
S(slab), S(buf), S(cache), S(dirty), S(mwrite));
printf("%.*s\n", scr_width, linebuf);
snprintf(linebuf, sizeof(linebuf),
- "Swap %stotal %sfree", // TODO: % used?
+ "Swap total:%s free:%s", // TODO: % used?
S(swaptotal), S(swapfree));
printf("%.*s\n", scr_width, linebuf);
s++;
}
bb_putchar(OPT_BATCH_MODE ? '\n' : '\r');
- fflush(stdout);
+ fflush_all();
#undef HDR_STR
#undef MIN_WIDTH
}
| PSSCAN_UTIME
| PSSCAN_STATE
| PSSCAN_COMM
-#if ENABLE_FEATURE_TOP_SMP_PROCESS
| PSSCAN_CPU
-#endif
| PSSCAN_UIDGID,
TOPMEM_MASK = 0
| PSSCAN_PID
int lines_rem;
unsigned interval;
char *str_interval, *str_iterations;
- SKIP_FEATURE_TOPMEM(const) unsigned scan_mask = TOP_MASK;
+ unsigned scan_mask = TOP_MASK;
#if ENABLE_FEATURE_USE_TERMIOS
struct termios new_settings;
struct pollfd pfd[1];
pfd[0].fd = 0;
pfd[0].events = POLLIN;
-#endif /* FEATURE_USE_TERMIOS */
+#endif
INIT_G();
#endif
/* all args are options; -n NUM */
- opt_complementary = "-";
- col = getopt32(argv, "d:n:b", &str_interval, &str_iterations);
+ opt_complementary = "-"; /* options can be specified w/o dash */
+ col = getopt32(argv, "d:n:b"IF_FEATURE_TOPMEM("m"), &str_interval, &str_iterations);
+#if ENABLE_FEATURE_TOPMEM
+ if (col & OPT_m) /* -m (busybox specific) */
+ scan_mask = TOPMEM_MASK;
+#endif
if (col & OPT_d) {
- /* work around for "-d 1" -> "-d -1" done by getopt32 */
+ /* work around for "-d 1" -> "-d -1" done by getopt32
+ * (opt_complementary == "-" does this) */
if (str_interval[0] == '-')
str_interval++;
/* Need to limit it to not overflow poll timeout */
new_settings.c_lflag &= ~(ISIG | ICANON | ECHO | ECHONL);
bb_signals(BB_FATAL_SIGS, sig_catcher);
- tcsetattr(0, TCSANOW, (void *) &new_settings);
-#endif /* FEATURE_USE_TERMIOS */
+ tcsetattr_stdin_TCSANOW(&new_settings);
+#endif
#if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
sort_function[0] = pcpu_sort;
sort_function[2] = time_sort;
#else
sort_function[0] = mem_sort;
-#endif /* FEATURE_TOP_CPU_USAGE_PERCENTAGE */
+#endif
while (1) {
procps_status_t *p = NULL;
sleep(interval);
continue;
}
-#endif /* FEATURE_USE_TERMIOS */
+#endif
if (col > LINE_BUF_SIZE-2) /* +2 bytes for '\n', NUL, */
col = LINE_BUF_SIZE-2;
/* read process IDs & status for all the processes */
while ((p = procps_scan(p, scan_mask)) != NULL) {
int n;
- if (scan_mask == TOP_MASK) {
+#if ENABLE_FEATURE_TOPMEM
+ if (scan_mask != TOPMEM_MASK)
+#endif
+ {
n = ntop;
top = xrealloc_vector(top, 6, ntop++);
top[n].pid = p->pid;
#if ENABLE_FEATURE_TOP_SMP_PROCESS
top[n].last_seen_on_cpu = p->last_seen_on_cpu;
#endif
- } else { /* TOPMEM */
+ }
#if ENABLE_FEATURE_TOPMEM
+ else { /* TOPMEM */
if (!(p->mapped_ro | p->mapped_rw))
continue; /* kernel threads are ignored */
n = ntop;
topmem[n].dirty = p->private_dirty + p->shared_dirty;
topmem[n].dirty_sh = p->shared_dirty;
topmem[n].stack = p->stack;
-#endif
}
+#endif
} /* end of "while we read /proc" */
if (ntop == 0) {
bb_error_msg("no process info in /proc");
break;
}
- if (scan_mask == TOP_MASK) {
+ if (scan_mask != TOPMEM_MASK) {
#if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
if (!prev_hist_count) {
do_stats();
qsort(top, ntop, sizeof(top_status_t), (void*)mult_lvl_cmp);
#else
qsort(top, ntop, sizeof(top_status_t), (void*)(sort_function[0]));
-#endif /* FEATURE_TOP_CPU_USAGE_PERCENTAGE */
+#endif
}
#if ENABLE_FEATURE_TOPMEM
else { /* TOPMEM */
if (OPT_BATCH_MODE) {
lines_rem = INT_MAX;
}
- if (scan_mask == TOP_MASK)
+ if (scan_mask != TOPMEM_MASK)
display_process_list(lines_rem, col);
#if ENABLE_FEATURE_TOPMEM
else
if (c == 'q')
break;
if (c == 'n') {
- USE_FEATURE_TOPMEM(scan_mask = TOP_MASK;)
+ IF_FEATURE_TOPMEM(scan_mask = TOP_MASK;)
sort_function[0] = pid_sort;
}
if (c == 'm') {
- USE_FEATURE_TOPMEM(scan_mask = TOP_MASK;)
+ IF_FEATURE_TOPMEM(scan_mask = TOP_MASK;)
sort_function[0] = mem_sort;
-#if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
+# if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
sort_function[1] = pcpu_sort;
sort_function[2] = time_sort;
-#endif
+# endif
}
-#if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
+# if ENABLE_FEATURE_SHOW_THREADS
+ if (c == 'h'
+ IF_FEATURE_TOPMEM(&& scan_mask != TOPMEM_MASK)
+ ) {
+ scan_mask ^= PSSCAN_TASKS;
+ }
+# endif
+# if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
if (c == 'p') {
- USE_FEATURE_TOPMEM(scan_mask = TOP_MASK;)
+ IF_FEATURE_TOPMEM(scan_mask = TOP_MASK;)
sort_function[0] = pcpu_sort;
sort_function[1] = mem_sort;
sort_function[2] = time_sort;
}
if (c == 't') {
- USE_FEATURE_TOPMEM(scan_mask = TOP_MASK;)
+ IF_FEATURE_TOPMEM(scan_mask = TOP_MASK;)
sort_function[0] = time_sort;
sort_function[1] = mem_sort;
sort_function[2] = pcpu_sort;
}
-#if ENABLE_FEATURE_TOPMEM
+# if ENABLE_FEATURE_TOPMEM
if (c == 's') {
scan_mask = TOPMEM_MASK;
free(prev_hist);
}
if (c == 'r')
inverted ^= 1;
-#endif
-#if ENABLE_FEATURE_TOP_SMP_CPU
+# endif
+# if ENABLE_FEATURE_TOP_SMP_CPU
/* procps-2.0.18 uses 'C', 3.2.7 uses '1' */
if (c == 'c' || c == '1') {
/* User wants to toggle per cpu <> aggregate */
smp_cpu_info = !smp_cpu_info;
get_jiffy_counts();
}
-#endif
-#endif
+# endif
+# endif
}
#endif /* FEATURE_USE_TERMIOS */
} /* end of "while (1)" */
projects / oweals / busybox.git / blobdiff