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/* 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.
*
* TODO: two passes so we can auto-size the columns?
USE_PMAP(NEWTOY(pmap, "<1pqx", TOYFLAG_USR|TOYFLAG_BIN))
config PMAP
bool "pmap"
default y
help
usage: pmap [-pqx] PID...
Report the memory map of a process or processes.
-q Show full paths
-q Do not show header or footer
-x Show the extended format
*/
#define FOR_pmap
#include "toys.h"
void pmap_main(void)
{
char **optargs, *line = 0;
size_t len = 0;
for (optargs = toys.optargs; *optargs; optargs++) {
long long start, end, pss, tpss=0, dirty, tdirty=0, swap, tswap=0, total=0;
char *name = 0, *k = FLAG(x) ? "" : "K", mode[5];
pid_t pid = atolx(*optargs);
int extras = 0, off, count;
FILE *fp;
sprintf(toybuf, "/proc/%u/cmdline", pid);
if (!(name = readfile(toybuf, 0, 0))) {
error_msg("no %s", toybuf);
continue;
}
xprintf("%d: %s\n", pid, name);
free(name);
// Only bother scanning the more verbose smaps file in -x mode.
sprintf(toybuf, "/proc/%u/%smaps", pid, "s"+!FLAG(x));
if (!(fp = fopen(toybuf, "r"))) {
error_msg("no %s", toybuf);
continue;
}
if (FLAG(x) && !FLAG(q))
xprintf("Address%*cKbytes PSS Dirty Swap Mode Mapping\n",
(int)(sizeof(long)*2)-5, ' ');
while (getline(&line, &len, fp) > 0) {
count = sscanf(line, "%llx-%llx %4s %*s %*s %*s %n", &start, &end, mode,
&off);
if (count == 3) {
name = line[off] ? line+off : " [anon]\n";
if (mode[3] == 'p') mode[3] = '-';
total += end = (end-start)/1024;
printf("%0*llx % *lld%s ", (int)(2*sizeof(long)), start, 6+!!FLAG(x),
end, k);
if (FLAG(x)) {
strcpy(toybuf, name);
name = toybuf;
continue;
}
} else {
if (sscanf(line, "Pss: %lld", &pss) ||
sscanf(line, "Private_Dirty: %lld", &dirty) ||
sscanf(line, "Swap: %lld", &swap)) extras++;
if (extras==3) {
printf("% 7lld %7lld %7lld ", pss, dirty, swap);
tpss += pss;
tdirty += dirty;
tswap += swap;
extras = 0;
} else continue;
}
xprintf("%s- %s%s", mode, *name == '[' ? " " : "",
FLAG(p) ? name : basename(name));
}
if (!FLAG(q)) {
if (FLAG(x)) {
xprintf("---------------- ------ ------ ------ ------\n" +
((sizeof(long)==4)?8:0));
}
printf("total% *lld%s", 2*(int)(sizeof(long)+1)+!!FLAG(x), total, k);
if (FLAG(x)) printf("% 8lld% 8lld% 8lld", tpss, tdirty, tswap);
xputc('\n');
}
fclose(fp);
}
free(line);
}
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