*
* Sept 2008: Vineet Gupta <vineet.gupta@arc.com>
* Added Support for reporting SMP Information
- * - CPU where Process was last seen running
+ * - CPU where process was last seen running
* (to see effect of sched_setaffinity() etc)
- * - CPU Time Split (idle/IO/wait etc) PER CPU
+ * - CPU time split (idle/IO/wait etc) per CPU
*
* Copyright (c) 1992 Branko Lankester
* Copyright (c) 1992 Roger Binns
* Copyright (C) 1994-1996 Charles L. Blake.
* Copyright (C) 1992-1998 Michael K. Johnson
*
- * Licensed under GPLv2, see file LICENSE in this tarball for details.
+ * Licensed under GPLv2, see file LICENSE in this source tree.
*/
+/* How to snapshot /proc for debugging top problems:
+ * for f in /proc/[0-9]*""/stat; do
+ * n=${f#/proc/}
+ * n=${n%/stat}_stat
+ * cp $f $n
+ * done
+ * cp /proc/stat /proc/meminfo /proc/loadavg .
+ * top -bn1 >top.out
+ *
+ * ...and how to run top on it on another machine:
+ * rm -rf proc; mkdir proc
+ * for f in [0-9]*_stat; do
+ * p=${f%_stat}
+ * mkdir -p proc/$p
+ * cp $f proc/$p/stat
+ * done
+ * cp stat meminfo loadavg proc
+ * chroot . ./top -bn1 >top1.out
+ */
+
+//config:config TOP
+//config: bool "top"
+//config: default y
+//config: help
+//config: The top program provides a dynamic real-time view of a running
+//config: system.
+//config:
+//config:config FEATURE_TOP_CPU_USAGE_PERCENTAGE
+//config: bool "Show CPU per-process usage percentage"
+//config: default y
+//config: depends on TOP
+//config: help
+//config: Make top display CPU usage for each process.
+//config: This adds about 2k.
+//config:
+//config:config FEATURE_TOP_CPU_GLOBAL_PERCENTS
+//config: bool "Show CPU global usage percentage"
+//config: default y
+//config: depends on FEATURE_TOP_CPU_USAGE_PERCENTAGE
+//config: help
+//config: Makes top display "CPU: NN% usr NN% sys..." line.
+//config: This adds about 0.5k.
+//config:
+//config:config FEATURE_TOP_SMP_CPU
+//config: bool "SMP CPU usage display ('c' key)"
+//config: default y
+//config: depends on FEATURE_TOP_CPU_GLOBAL_PERCENTS
+//config: help
+//config: Allow 'c' key to switch between individual/cumulative CPU stats
+//config: This adds about 0.5k.
+//config:
+//config:config FEATURE_TOP_DECIMALS
+//config: bool "Show 1/10th of a percent in CPU/mem statistics"
+//config: default y
+//config: depends on FEATURE_TOP_CPU_USAGE_PERCENTAGE
+//config: help
+//config: Show 1/10th of a percent in CPU/mem statistics.
+//config: This adds about 0.3k.
+//config:
+//config:config FEATURE_TOP_SMP_PROCESS
+//config: bool "Show CPU process runs on ('j' field)"
+//config: default y
+//config: depends on TOP
+//config: help
+//config: Show CPU where process was last found running on.
+//config: This is the 'j' field.
+//config:
+//config:config FEATURE_TOPMEM
+//config: bool "Topmem command ('s' key)"
+//config: default y
+//config: depends on TOP
+//config: help
+//config: Enable 's' in top (gives lots of memory info).
#include "libbb.h"
struct globals {
top_status_t *top;
int ntop;
+ smallint inverted;
#if ENABLE_FEATURE_TOPMEM
smallint sort_field;
- smallint inverted;
#endif
#if ENABLE_FEATURE_TOP_SMP_CPU
smallint smp_cpu_info; /* one/many cpu info lines? */
#endif
+ unsigned lines; /* screen height */
#if ENABLE_FEATURE_USE_TERMIOS
struct termios initial_settings;
+ int scroll_ofs;
+#define G_scroll_ofs G.scroll_ofs
+#else
+#define G_scroll_ofs 0
#endif
#if !ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
cmp_funcp sort_function[1];
jiffy_counts_t *cpu_jif, *cpu_prev_jif;
int num_cpus;
#endif
+#if ENABLE_FEATURE_USE_TERMIOS
+ char kbd_input[KEYCODE_BUFFER_SIZE];
+#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 { \
- char G_sizecheck[sizeof(G) > COMMON_BUFSIZE ? -1 : 1]; \
- }; \
-} while (0)
+struct BUG_bad_size {
+ char BUG_G_too_big[sizeof(G) <= COMMON_BUFSIZE ? 1 : -1];
+ char BUG_line_buf_too_small[LINE_BUF_SIZE > 80 ? 1 : -1];
+};
#define top (G.top )
#define ntop (G.ntop )
#define sort_field (G.sort_field )
#define num_cpus (G.num_cpus )
#define total_pcpu (G.total_pcpu )
#define line_buf (G.line_buf )
+#define INIT_G() do { } while (0)
enum {
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)
for (i = 0; i < SORT_DEPTH; i++) {
cmp_val = (*sort_function[i])(a, b);
if (cmp_val != 0)
- return cmp_val;
+ break;
}
- return 0;
+ return inverted ? -cmp_val : cmp_val;
}
static NOINLINE int read_cpu_jiffy(FILE *fp, jiffy_counts_t *p_jif)
* they are used to calculate per process CPU% */
prev_jif = cur_jif;
if (read_cpu_jiffy(fp, &cur_jif) < 4)
- bb_error_msg_and_die("can't read /proc/stat");
+ bb_error_msg_and_die("can't read '%s'", "/proc/stat");
#if !ENABLE_FEATURE_TOP_SMP_CPU
fclose(fp);
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)
snprintf(scrbuf, scr_width,
"Mem: %luK used, %luK free, %luK shrd, %luK buff, %luK cached",
used, mfree, shared, buffers, cached);
- /* clear screen & go to top */
- printf(OPT_BATCH_MODE ? "%s\n" : "\e[H\e[J%s\n", scrbuf);
+ /* go to top & clear to the end of screen */
+ printf(OPT_BATCH_MODE ? "%s\n" : "\033[H\033[J%s\n", scrbuf);
(*lines_rem_p)--;
/* Display CPU time split as percentage of total time
* 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
+ printf(OPT_BATCH_MODE ? "%.*s" : "\033[7m%.*s\033[0m", scr_width,
+ " PID PPID USER STAT VSZ %VSZ"
+ 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
+ * %VSZ = s->vsz/MemTotal
*/
pmem_shift = BITS_PER_INT-11;
pmem_scale = UPSCALE*(1U<<(BITS_PER_INT-11)) / total_memory;
pmem_scale /= 4;
pmem_shift -= 2;
}
- pmem_half = (1U << pmem_shift) / (ENABLE_FEATURE_TOP_DECIMALS? 20 : 2);
+ pmem_half = (1U << pmem_shift) / (ENABLE_FEATURE_TOP_DECIMALS ? 20 : 2);
#if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
busy_jifs = cur_jif.busy - prev_jif.busy;
/* This happens if there were lots of short-lived processes
* 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;
pcpu_shift -= 2;
}
- pcpu_half = (1U << pcpu_shift) / (ENABLE_FEATURE_TOP_DECIMALS? 20 : 2);
+ pcpu_half = (1U << pcpu_shift) / (ENABLE_FEATURE_TOP_DECIMALS ? 20 : 2);
/* printf(" pmem_scale=%u pcpu_scale=%u ", pmem_scale, pcpu_scale); */
#endif
/* Ok, all preliminary data is ready, go through the list */
scr_width += 2; /* account for leading '\n' and trailing NUL */
- if (lines_rem > ntop)
- lines_rem = ntop;
- s = top;
+ if (lines_rem > ntop - G_scroll_ofs)
+ lines_rem = ntop - G_scroll_ofs;
+ s = top + G_scroll_ofs;
while (--lines_rem >= 0) {
unsigned col;
CALC_STAT(pmem, (s->vsz*pmem_scale + pmem_half) >> pmem_shift);
if (s->vsz >= 100000)
sprintf(vsz_str_buf, "%6ldm", s->vsz/1024);
else
- sprintf(vsz_str_buf, "%7ld", s->vsz);
- /* PID PPID USER STAT VSZ %MEM [%CPU] COMMAND */
+ sprintf(vsz_str_buf, "%7lu", s->vsz);
+ /* PID PPID USER STAT VSZ %VSZ [%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
clear_username_cache();
free(top);
top = NULL;
- ntop = 0;
}
#if ENABLE_FEATURE_USE_TERMIOS
static void reset_term(void)
{
- tcsetattr_stdin_TCSANOW(&initial_settings);
+ if (!OPT_BATCH_MODE)
+ 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
}
}
-static void sig_catcher(int sig UNUSED_PARAM)
+static void sig_catcher(int sig)
{
reset_term();
- exit(EXIT_FAILURE);
+ kill_myself_with_sig(sig);
}
+
#endif /* FEATURE_USE_TERMIOS */
/*
n = offsetof(topmem_status_t, vsz) + (sort_field * sizeof(mem_t));
l = *(mem_t*)(a + n);
r = *(mem_t*)(b + n);
-// if (l == r) {
-// l = a->mapped_rw;
-// r = b->mapped_rw;
-// }
+ if (l == r) {
+ l = ((topmem_status_t*)a)->dirty;
+ r = ((topmem_status_t*)b)->dirty;
+ }
/* We want to avoid unsigned->signed and truncation errors */
/* l>r: -1, l=r: 0, l<r: 1 */
n = (l > r) ? -1 : (l != r);
return inverted ? -n : n;
}
-/* 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';
- return xstrdup(str);
- }
- return NULL;
-}
-
/* display header info (meminfo / loadavg) */
static void display_topmem_header(int scr_width, int *lines_rem_p)
{
- char linebuf[128];
+ enum {
+ TOTAL = 0, MFREE, BUF, CACHE,
+ SWAPTOTAL, SWAPFREE, DIRTY,
+ MWRITE, ANON, MAP, SLAB,
+ NUM_FIELDS
+ };
+ static const char match[NUM_FIELDS][12] = {
+ "\x09" "MemTotal:", // TOTAL
+ "\x08" "MemFree:", // MFREE
+ "\x08" "Buffers:", // BUF
+ "\x07" "Cached:", // CACHE
+ "\x0a" "SwapTotal:", // SWAPTOTAL
+ "\x09" "SwapFree:", // SWAPFREE
+ "\x06" "Dirty:", // DIRTY
+ "\x0a" "Writeback:", // MWRITE
+ "\x0a" "AnonPages:", // ANON
+ "\x07" "Mapped:", // MAP
+ "\x05" "Slab:", // SLAB
+ };
+ char meminfo_buf[4 * 1024];
+ const char *Z[NUM_FIELDS];
unsigned i;
- FILE *fp;
- union {
- struct {
- /* 1 */ char *total;
- /* 2 */ char *mfree;
- /* 3 */ char *buf;
- /* 4 */ char *cache;
- /* 5 */ char *swaptotal;
- /* 6 */ char *swapfree;
- /* 7 */ char *dirty;
- /* 8 */ char *mwrite;
- /* 9 */ char *anon;
- /* 10 */ char *map;
- /* 11 */ char *slab;
- } u;
- char *str[11];
- } Z;
-#define total Z.u.total
-#define mfree Z.u.mfree
-#define buf Z.u.buf
-#define cache Z.u.cache
-#define swaptotal Z.u.swaptotal
-#define swapfree Z.u.swapfree
-#define dirty Z.u.dirty
-#define mwrite Z.u.mwrite
-#define anon Z.u.anon
-#define map Z.u.map
-#define slab Z.u.slab
-#define str Z.str
-
- memset(&Z, 0, sizeof(Z));
+ int sz;
+
+ for (i = 0; i < NUM_FIELDS; i++)
+ Z[i] = "?";
/* read memory info */
- fp = xfopen_for_read("meminfo");
- while (fgets(linebuf, sizeof(linebuf), fp)) {
- char *p;
-
-#define SCAN(match, name) \
- p = grab_number(linebuf, match, sizeof(match)-1); \
- if (p) { name = p; continue; }
-
- SCAN("MemTotal:", total);
- SCAN("MemFree:", mfree);
- SCAN("Buffers:", buf);
- SCAN("Cached:", cache);
- SCAN("SwapTotal:", swaptotal);
- SCAN("SwapFree:", swapfree);
- SCAN("Dirty:", dirty);
- SCAN("Writeback:", mwrite);
- SCAN("AnonPages:", anon);
- SCAN("Mapped:", map);
- SCAN("Slab:", slab);
-#undef SCAN
+ sz = open_read_close("meminfo", meminfo_buf, sizeof(meminfo_buf) - 1);
+ if (sz >= 0) {
+ char *p = meminfo_buf;
+ meminfo_buf[sz] = '\0';
+ /* Note that fields always appear in the match[] order */
+ for (i = 0; i < NUM_FIELDS; i++) {
+ char *found = strstr(p, match[i] + 1);
+ if (found) {
+ /* Cut "NNNN" out of " NNNN kb" */
+ char *s = skip_whitespace(found + match[i][0]);
+ p = skip_non_whitespace(s);
+ *p++ = '\0';
+ Z[i] = s;
+ }
+ }
}
- fclose(fp);
-#define S(s) (s ? s : "0 ")
- snprintf(linebuf, sizeof(linebuf),
- "Mem %stotal %sanon %smap %sfree",
- S(total), S(anon), S(map), S(mfree));
- printf(OPT_BATCH_MODE ? "%.*s\n" : "\e[H\e[J%.*s\n", scr_width, linebuf);
+ snprintf(line_buf, LINE_BUF_SIZE,
+ "Mem total:%s anon:%s map:%s free:%s",
+ Z[TOTAL], Z[ANON], Z[MAP], Z[MFREE]);
+ printf(OPT_BATCH_MODE ? "%.*s\n" : "\033[H\033[J%.*s\n", scr_width, line_buf);
- snprintf(linebuf, sizeof(linebuf),
- " %sslab %sbuf %scache %sdirty %swrite",
- S(slab), S(buf), S(cache), S(dirty), S(mwrite));
- printf("%.*s\n", scr_width, linebuf);
+ snprintf(line_buf, LINE_BUF_SIZE,
+ " slab:%s buf:%s cache:%s dirty:%s write:%s",
+ Z[SLAB], Z[BUF], Z[CACHE], Z[DIRTY], Z[MWRITE]);
+ printf("%.*s\n", scr_width, line_buf);
- snprintf(linebuf, sizeof(linebuf),
- "Swap %stotal %sfree", // TODO: % used?
- S(swaptotal), S(swapfree));
- printf("%.*s\n", scr_width, linebuf);
+ snprintf(line_buf, LINE_BUF_SIZE,
+ "Swap total:%s free:%s", // TODO: % used?
+ Z[SWAPTOTAL], Z[SWAPFREE]);
+ printf("%.*s\n", scr_width, line_buf);
(*lines_rem_p) -= 3;
-#undef S
-
- for (i = 0; i < ARRAY_SIZE(str); i++)
- free(str[i]);
-#undef total
-#undef free
-#undef buf
-#undef cache
-#undef swaptotal
-#undef swapfree
-#undef dirty
-#undef write
-#undef anon
-#undef map
-#undef slab
-#undef str
}
static void ulltoa6_and_space(unsigned long long ul, char buf[6])
{
/* see http://en.wikipedia.org/wiki/Tera */
- smart_ulltoa5(ul, buf, " mgtpezy");
- buf[5] = ' ';
+ smart_ulltoa5(ul, buf, " mgtpezy")[0] = ' ';
}
static NOINLINE void display_topmem_process_list(int lines_rem, int scr_width)
{
#define HDR_STR " PID VSZ VSZRW RSS (SHR) DIRTY (SHR) STACK"
#define MIN_WIDTH sizeof(HDR_STR)
- const topmem_status_t *s = topmem;
+ const topmem_status_t *s = topmem + G_scroll_ofs;
display_topmem_header(scr_width, &lines_rem);
strcpy(line_buf, HDR_STR " COMMAND");
- line_buf[5 + sort_field * 6] = '*';
+ line_buf[11 + sort_field * 6] = "^_"[inverted];
printf(OPT_BATCH_MODE ? "%.*s" : "\e[7m%.*s\e[0m", scr_width, line_buf);
lines_rem--;
- if (lines_rem > ntop)
- lines_rem = ntop;
+ if (lines_rem > ntop - G_scroll_ofs)
+ lines_rem = ntop - G_scroll_ofs;
while (--lines_rem >= 0) {
/* PID VSZ VSZRW RSS (SHR) DIRTY (SHR) COMMAND */
ulltoa6_and_space(s->pid , &line_buf[0*6]);
s++;
}
bb_putchar(OPT_BATCH_MODE ? '\n' : '\r');
- fflush(stdout);
+ fflush_all();
#undef HDR_STR
#undef MIN_WIDTH
}
| PSSCAN_PID
| PSSCAN_SMAPS
| PSSCAN_COMM,
+ EXIT_MASK = (unsigned)-1,
};
+#if ENABLE_FEATURE_USE_TERMIOS
+static unsigned handle_input(unsigned scan_mask, unsigned interval)
+{
+ struct pollfd pfd[1];
+
+ if (option_mask32 & OPT_EOF) {
+ /* EOF on stdin ("top </dev/null") */
+ sleep(interval);
+ return scan_mask;
+ }
+
+ pfd[0].fd = 0;
+ pfd[0].events = POLLIN;
+
+ while (1) {
+ int32_t c;
+
+ c = read_key(STDIN_FILENO, G.kbd_input, interval * 1000);
+ if (c == -1 && errno != EAGAIN) {
+ /* error/EOF */
+ option_mask32 |= OPT_EOF;
+ break;
+ }
+ interval = 0;
+
+ if (c == initial_settings.c_cc[VINTR])
+ return EXIT_MASK;
+ if (c == initial_settings.c_cc[VEOF])
+ return EXIT_MASK;
+
+ if (c == KEYCODE_UP) {
+ G_scroll_ofs--;
+ goto normalize_ofs;
+ }
+ if (c == KEYCODE_DOWN) {
+ G_scroll_ofs++;
+ goto normalize_ofs;
+ }
+ if (c == KEYCODE_HOME) {
+ G_scroll_ofs = 0;
+ break;
+ }
+ if (c == KEYCODE_END) {
+ G_scroll_ofs = ntop - G.lines / 2;
+ goto normalize_ofs;
+ }
+ if (c == KEYCODE_PAGEUP) {
+ G_scroll_ofs -= G.lines / 2;
+ goto normalize_ofs;
+ }
+ if (c == KEYCODE_PAGEDOWN) {
+ G_scroll_ofs += G.lines / 2;
+ normalize_ofs:
+ if (G_scroll_ofs >= ntop)
+ G_scroll_ofs = ntop - 1;
+ if (G_scroll_ofs < 0)
+ G_scroll_ofs = 0;
+ break;
+ }
+
+ c |= 0x20; /* lowercase */
+ if (c == 'q')
+ return EXIT_MASK;
+
+ if (c == 'n') {
+ IF_FEATURE_TOPMEM(scan_mask = TOP_MASK;)
+ sort_function[0] = pid_sort;
+ continue;
+ }
+ if (c == 'm') {
+ IF_FEATURE_TOPMEM(scan_mask = TOP_MASK;)
+ sort_function[0] = mem_sort;
+# if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
+ sort_function[1] = pcpu_sort;
+ sort_function[2] = time_sort;
+# endif
+ continue;
+ }
+# if ENABLE_FEATURE_SHOW_THREADS
+ if (c == 'h'
+ IF_FEATURE_TOPMEM(&& scan_mask != TOPMEM_MASK)
+ ) {
+ scan_mask ^= PSSCAN_TASKS;
+ continue;
+ }
+# endif
+# if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
+ if (c == 'p') {
+ IF_FEATURE_TOPMEM(scan_mask = TOP_MASK;)
+ sort_function[0] = pcpu_sort;
+ sort_function[1] = mem_sort;
+ sort_function[2] = time_sort;
+ continue;
+ }
+ if (c == 't') {
+ IF_FEATURE_TOPMEM(scan_mask = TOP_MASK;)
+ sort_function[0] = time_sort;
+ sort_function[1] = mem_sort;
+ sort_function[2] = pcpu_sort;
+ continue;
+ }
+# if ENABLE_FEATURE_TOPMEM
+ if (c == 's') {
+ scan_mask = TOPMEM_MASK;
+ free(prev_hist);
+ prev_hist = NULL;
+ prev_hist_count = 0;
+ sort_field = (sort_field + 1) % NUM_SORT_FIELD;
+ continue;
+ }
+# endif
+ if (c == 'r') {
+ inverted ^= 1;
+ continue;
+ }
+# 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 */
+ if (smp_cpu_info) {
+ free(cpu_prev_jif);
+ free(cpu_jif);
+ cpu_jif = &cur_jif;
+ cpu_prev_jif = &prev_jif;
+ } else {
+ /* Prepare for xrealloc() */
+ cpu_jif = cpu_prev_jif = NULL;
+ }
+ num_cpus = 0;
+ smp_cpu_info = !smp_cpu_info;
+ get_jiffy_counts();
+ continue;
+ }
+# endif
+# endif
+ break; /* unknown key -> force refresh */
+ }
+
+ return scan_mask;
+}
+#endif
+
+//usage:#if ENABLE_FEATURE_SHOW_THREADS || ENABLE_FEATURE_TOP_SMP_CPU
+//usage:# define IF_SHOW_THREADS_OR_TOP_SMP(...) __VA_ARGS__
+//usage:#else
+//usage:# define IF_SHOW_THREADS_OR_TOP_SMP(...)
+//usage:#endif
+//usage:#define top_trivial_usage
+//usage: "[-b] [-nCOUNT] [-dSECONDS]" IF_FEATURE_TOPMEM(" [-m]")
+//usage:#define top_full_usage "\n\n"
+//usage: "Provide a view of process activity in real time."
+//usage: "\n""Read the status of all processes from /proc each SECONDS"
+//usage: "\n""and display a screenful of them."
+//usage: "\n""Keys:"
+//usage: "\n"" N/M"
+//usage: IF_FEATURE_TOP_CPU_USAGE_PERCENTAGE("/P")
+//usage: IF_FEATURE_TOP_CPU_USAGE_PERCENTAGE("/T")
+//usage: ": " IF_FEATURE_TOPMEM("show CPU usage, ") "sort by pid/mem"
+//usage: IF_FEATURE_TOP_CPU_USAGE_PERCENTAGE("/cpu")
+//usage: IF_FEATURE_TOP_CPU_USAGE_PERCENTAGE("/time")
+//usage: IF_FEATURE_TOPMEM(
+//usage: "\n"" S: show memory"
+//usage: )
+//usage: "\n"" R: reverse sort"
+//usage: IF_SHOW_THREADS_OR_TOP_SMP(
+//usage: "\n"" "
+//usage: IF_FEATURE_SHOW_THREADS("H: toggle threads")
+//usage: IF_FEATURE_SHOW_THREADS(IF_FEATURE_TOP_SMP_CPU(", "))
+//usage: IF_FEATURE_TOP_SMP_CPU("1: toggle SMP")
+//usage: )
+//usage: "\n"" Q,^C: exit"
+//usage: "\n"
+//usage: "\n""Options:"
+//usage: "\n"" -b Batch mode"
+//usage: "\n"" -n N Exit after N iterations"
+//usage: "\n"" -d N Delay between updates"
+//usage: IF_FEATURE_TOPMEM(
+//usage: "\n"" -m Same as 's' key"
+//usage: )
+
+/* Interactive testing:
+ * echo sss | ./busybox top
+ * - shows memory screen
+ * echo sss | ./busybox top -bn1 >mem
+ * - saves memory screen - the *whole* list, not first NROWS processes!
+ * echo .m.s.s.s.s.s.s.q | ./busybox top -b >z
+ * - saves several different screens, and exits
+ *
+ * TODO: -i STRING param as a better alternative?
+ */
+
int top_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int top_main(int argc UNUSED_PARAM, char **argv)
{
int iterations;
- unsigned lines, col;
- int lines_rem;
+ unsigned col;
unsigned interval;
char *str_interval, *str_iterations;
- IF_NOT_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];
- unsigned char c;
-
- 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 */
/* change to /proc */
xchdir("/proc");
-#if ENABLE_FEATURE_USE_TERMIOS
- tcgetattr(0, (void *) &initial_settings);
- memcpy(&new_settings, &initial_settings, sizeof(new_settings));
- /* unbuffered input, turn off echo */
- new_settings.c_lflag &= ~(ISIG | ICANON | ECHO | ECHONL);
-
- bb_signals(BB_FATAL_SIGS, sig_catcher);
- tcsetattr_stdin_TCSANOW(&new_settings);
-#endif /* FEATURE_USE_TERMIOS */
#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) {
+ if (OPT_BATCH_MODE) {
+ option_mask32 |= OPT_EOF;
+ }
+#if ENABLE_FEATURE_USE_TERMIOS
+ else {
+ tcgetattr(0, (void *) &initial_settings);
+ memcpy(&new_settings, &initial_settings, sizeof(new_settings));
+ /* unbuffered input, turn off echo */
+ new_settings.c_lflag &= ~(ISIG | ICANON | ECHO | ECHONL);
+ tcsetattr_stdin_TCSANOW(&new_settings);
+ }
+
+ bb_signals(BB_FATAL_SIGS, sig_catcher);
+
+ /* Eat initial input, if any */
+ scan_mask = handle_input(scan_mask, 0);
+#endif
+
+ while (scan_mask != EXIT_MASK) {
procps_status_t *p = NULL;
- lines = 24; /* default */
- col = 79;
+ if (OPT_BATCH_MODE) {
+ G.lines = INT_MAX;
+ col = LINE_BUF_SIZE - 2; /* +2 bytes for '\n', NUL */
+ } else {
+ G.lines = 24; /* default */
+ col = 79;
#if ENABLE_FEATURE_USE_TERMIOS
- /* We output to stdout, we need size of stdout (not stdin)! */
- get_terminal_width_height(STDOUT_FILENO, &col, &lines);
- if (lines < 5 || col < 10) {
- sleep(interval);
- continue;
+ /* We output to stdout, we need size of stdout (not stdin)! */
+ get_terminal_width_height(STDOUT_FILENO, &col, &G.lines);
+ if (G.lines < 5 || col < 10) {
+ sleep(interval);
+ continue;
+ }
+#endif
+ if (col > LINE_BUF_SIZE - 2)
+ col = LINE_BUF_SIZE - 2;
}
-#endif /* FEATURE_USE_TERMIOS */
- if (col > LINE_BUF_SIZE-2) /* +2 bytes for '\n', NUL, */
- col = LINE_BUF_SIZE-2;
/* read process IDs & status for all the processes */
+ ntop = 0;
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
- if (!(p->mapped_ro | p->mapped_rw))
+ else { /* TOPMEM */
+ if (!(p->smaps.mapped_ro | p->smaps.mapped_rw))
continue; /* kernel threads are ignored */
n = ntop;
/* No bug here - top and topmem are the same */
top = xrealloc_vector(topmem, 6, ntop++);
strcpy(topmem[n].comm, p->comm);
topmem[n].pid = p->pid;
- topmem[n].vsz = p->mapped_rw + p->mapped_ro;
- topmem[n].vszrw = p->mapped_rw;
- topmem[n].rss_sh = p->shared_clean + p->shared_dirty;
- topmem[n].rss = p->private_clean + p->private_dirty + topmem[n].rss_sh;
- topmem[n].dirty = p->private_dirty + p->shared_dirty;
- topmem[n].dirty_sh = p->shared_dirty;
- topmem[n].stack = p->stack;
-#endif
+ topmem[n].vsz = p->smaps.mapped_rw + p->smaps.mapped_ro;
+ topmem[n].vszrw = p->smaps.mapped_rw;
+ topmem[n].rss_sh = p->smaps.shared_clean + p->smaps.shared_dirty;
+ topmem[n].rss = p->smaps.private_clean + p->smaps.private_dirty + topmem[n].rss_sh;
+ topmem[n].dirty = p->smaps.private_dirty + p->smaps.shared_dirty;
+ topmem[n].dirty_sh = p->smaps.shared_dirty;
+ topmem[n].stack = p->smaps.stack;
}
+#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 */
qsort(topmem, ntop, sizeof(topmem_status_t), (void*)topmem_sort);
}
#endif
- lines_rem = lines;
- if (OPT_BATCH_MODE) {
- lines_rem = INT_MAX;
- }
- if (scan_mask == TOP_MASK)
- display_process_list(lines_rem, col);
+ if (scan_mask != TOPMEM_MASK)
+ display_process_list(G.lines, col);
#if ENABLE_FEATURE_TOPMEM
else
- display_topmem_process_list(lines_rem, col);
+ display_topmem_process_list(G.lines, col);
#endif
clearmems();
if (iterations >= 0 && !--iterations)
#if !ENABLE_FEATURE_USE_TERMIOS
sleep(interval);
#else
- if (option_mask32 & (OPT_b|OPT_EOF))
- /* batch mode, or EOF on stdin ("top </dev/null") */
- sleep(interval);
- else if (safe_poll(pfd, 1, interval * 1000) > 0) {
- if (safe_read(STDIN_FILENO, &c, 1) != 1) { /* error/EOF? */
- option_mask32 |= OPT_EOF;
- continue;
- }
- if (c == initial_settings.c_cc[VINTR])
- break;
- c |= 0x20; /* lowercase */
- if (c == 'q')
- break;
- if (c == 'n') {
- IF_FEATURE_TOPMEM(scan_mask = TOP_MASK;)
- sort_function[0] = pid_sort;
- }
- if (c == 'm') {
- IF_FEATURE_TOPMEM(scan_mask = TOP_MASK;)
- sort_function[0] = mem_sort;
-#if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
- sort_function[1] = pcpu_sort;
- sort_function[2] = time_sort;
-#endif
- }
-#if ENABLE_FEATURE_TOP_CPU_USAGE_PERCENTAGE
- if (c == 'p') {
- 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') {
- 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 (c == 's') {
- scan_mask = TOPMEM_MASK;
- free(prev_hist);
- prev_hist = NULL;
- prev_hist_count = 0;
- sort_field = (sort_field + 1) % NUM_SORT_FIELD;
- }
- if (c == 'r')
- inverted ^= 1;
-#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 */
- if (smp_cpu_info) {
- free(cpu_prev_jif);
- free(cpu_jif);
- cpu_jif = &cur_jif;
- cpu_prev_jif = &prev_jif;
- } else {
- /* Prepare for xrealloc() */
- cpu_jif = cpu_prev_jif = NULL;
- }
- num_cpus = 0;
- smp_cpu_info = !smp_cpu_info;
- get_jiffy_counts();
- }
-#endif
-#endif
- }
+ scan_mask = handle_input(scan_mask, interval);
#endif /* FEATURE_USE_TERMIOS */
- } /* end of "while (1)" */
+ } /* end of "while (not Q)" */
bb_putchar('\n');
#if ENABLE_FEATURE_USE_TERMIOS
projects / platform / upstream / busybox.git / blobdiff