pmap: new applet. +1k.
pmap is a tool used to look at processes' memory maps, normally found
in procps package. It provides more readable and easily sortable output
(one line per mapping) from maps/smaps files in /proc/PID/. This would
help in debugging memory usage issues, especially on devices where lots
of typing is not a viable option.
This patch does'n implement -d and -A command line options of GNU pmap,
since those are not that must have features and I was afraid of going
blind from looking at its code.
The implementation takes smaps scanning part out of procps_scan() function
and moves it into procps_read_smaps(), which does more detailed processing
of a single PID's smaps data.
Signed-off-by: Alexander Shishkin <virtuoso@slind.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/include/libbb.h b/include/libbb.h
index 3fd7545..43e525c 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -1387,6 +1387,29 @@
enum { COMM_LEN = 16 };
# endif
#endif
+
+struct smaprec {
+ unsigned long mapped_rw;
+ unsigned long mapped_ro;
+ unsigned long shared_clean;
+ unsigned long shared_dirty;
+ unsigned long private_clean;
+ unsigned long private_dirty;
+ unsigned long stack;
+ unsigned long smap_pss, smap_swap;
+ unsigned long smap_size;
+ unsigned long smap_start;
+ char smap_mode[5];
+ char *smap_name;
+};
+
+#if !ENABLE_PMAP
+#define procps_read_smaps(pid, total, cb, data) \
+ procps_read_smaps(pid, total)
+#endif
+int FAST_FUNC procps_read_smaps(pid_t pid, struct smaprec *total,
+ void (*cb)(struct smaprec *, void *), void *data);
+
typedef struct procps_status_t {
DIR *dir;
IF_FEATURE_SHOW_THREADS(DIR *task_dir;)
@@ -1415,13 +1438,7 @@
#endif
unsigned tty_major,tty_minor;
#if ENABLE_FEATURE_TOPMEM
- unsigned long mapped_rw;
- unsigned long mapped_ro;
- unsigned long shared_clean;
- unsigned long shared_dirty;
- unsigned long private_clean;
- unsigned long private_dirty;
- unsigned long stack;
+ struct smaprec smaps;
#endif
char state[4];
/* basename of executable in exec(2), read from /proc/N/stat