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authorRob Landley <rob@landley.net>2013-08-27 23:48:54 -0500
committerRob Landley <rob@landley.net>2013-08-27 23:48:54 -0500
commit455865a837f2a6c44f91e5a5a2cd40c3a64d4b68 (patch)
tree6eb787bd75914d35c7d742e02dc7be9c279d3d03 /toys/other
parent8b5c671958071ee2a9967551f0490623b73e30b5 (diff)
downloadtoybox-455865a837f2a6c44f91e5a5a2cd40c3a64d4b68.tar.gz
Rewrite pmap to be simpler and match other implementation's output more closely.
Diffstat (limited to 'toys/other')
-rw-r--r--toys/other/pmap.c111
1 files changed, 111 insertions, 0 deletions
diff --git a/toys/other/pmap.c b/toys/other/pmap.c
new file mode 100644
index 00000000..012280dd
--- /dev/null
+++ b/toys/other/pmap.c
@@ -0,0 +1,111 @@
+/* pmap.c - Reports the memory map of a process or processes.
+ *
+ * Copyright 2013 Ranjan Kumar <ranjankumar.bth@gmail.com>
+ * Copyright 2013 Kyungwan Han <asura321@gmail.com>
+ *
+ * No Standard.
+
+USE_PMAP(NEWTOY(pmap, "<1xq", TOYFLAG_BIN))
+
+config PMAP
+ bool "pmap"
+ default y
+ help
+ usage: pmap [-xq] [pids...]
+
+ Reports the memory map of a process or processes.
+
+ -x Show the extended format.
+ -q Do not display some header/footer lines.
+*/
+
+#define FOR_pmap
+#include "toys.h"
+
+void pmap_main(void)
+{
+ while (*toys.optargs) {
+ pid_t pid = atolx(*toys.optargs++);
+ FILE *fp;
+ char *line, *oldline = 0, *name = 0,
+ *k = (toys.optflags & FLAG_x) ? "" : "K";
+ size_t len;
+ long long start, end, pss, tpss = 0, dirty, tdirty = 0, swap, tswap = 0,
+ total = 0;
+ int count, xx = 0;
+
+ snprintf(toybuf, sizeof(toybuf), "/proc/%u/cmdline", pid);
+ line = readfile(toybuf);
+ if (!line) error_msg("No %lu", (long)pid);
+ xprintf("%u: %s\n", (int)pid, line);
+ free(line);
+
+ // Header
+ // Only use the more verbose file in -x mode
+ sprintf(toybuf, "/proc/%u/%smaps", pid,
+ (toys.optflags & FLAG_x) ? "s" : "");
+ if (!(fp = fopen(toybuf, "r"))) {
+ error_msg("No %ld\n", (long)pid);
+ return;
+ }
+
+ if ((toys.optflags & (FLAG_q|FLAG_x)) == FLAG_x)
+ xprintf("Address%*cKbytes PSS Dirty Swap Mode Mapping\n",
+ (sizeof(long)*2)-4, ' ');
+
+ // Loop through mappings
+ 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) {
+ name = line[off] ? line+off : " [anon]\n";
+ if (toybuf[3] == 'p') toybuf[3] = '-';
+ total += end = (end-start)/1024;
+ printf("%0*llx % *lld%s ", (int)(2*sizeof(long)), start,
+ 6+!!(toys.optflags & FLAG_x), end, k);
+ if (toys.optflags & FLAG_x) {
+ oldline = line;
+ continue;
+ }
+ } else {
+ if (0<sscanf(line, "Pss: %lld", &pss)
+ || 0<sscanf(line, "Private_Dirty: %lld", &dirty)
+ || 0<sscanf(line, "Swap: %lld", &swap)) xx++;
+ free(line);
+ if (xx<3) continue;
+ line = oldline;
+ name = basename(name);
+ xx = 0;
+ printf("% 7lld %7lld %7lld ", pss, dirty, swap);
+ tpss += pss;
+ tdirty += dirty;
+ tswap += swap;
+ }
+
+ xprintf("%s- %s%s", toybuf, line[off]=='[' ? " " : "", name);
+
+ free(line);
+ line = 0;
+ }
+
+ // Trailer
+ if (!(toys.optflags & FLAG_q)) {
+ int x = !!(toys.optflags & FLAG_x);
+ if (x) {
+ memset(toybuf, '-', 16);
+ xprintf("%.*s ------ ------ ------ ------\n", (int)(sizeof(long)*2),
+ toybuf);
+ }
+ printf("total% *lld%s", 2*(int)(sizeof(long)+1)+x, total, k);
+ if (x) printf("% 8lld% 8lld% 8lld", tpss, tdirty, tswap);
+ xputc('\n');
+ }
+
+ fclose(fp);
+ }
+}