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authorThomas De Schampheleire <thomas.de_schampheleire@nokia.com>2019-03-26 13:10:21 +0100
committerDenys Vlasenko <vda.linux@googlemail.com>2019-04-04 14:14:24 +0200
commit2b6282117f026cfa2a3e7efee7caa054b6265264 (patch)
tree1127f82c0841cf66600501362f94f0e9d38b8883
parenta3ce161363380899ae45716c70714cfcc93a7755 (diff)
downloadbusybox-2b6282117f026cfa2a3e7efee7caa054b6265264.tar.gz
top: provide cmdline argument '-H' to enable thread scanning by default
In particular useful when you want to evaluate the threads in batch mode: top -Hbn1 function old new delta top_main 928 941 +13 packed_usage 33317 33319 +2 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 2/0 up/down: 15/0) Total: 15 bytes Signed-off-by: Philippe Belet <philippe.belet@nokia.com> Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com> Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--procps/top.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/procps/top.c b/procps/top.c
index 625409755..89f9d23f4 100644
--- a/procps/top.c
+++ b/procps/top.c
@@ -222,8 +222,9 @@ enum {
OPT_d = (1 << 0),
OPT_n = (1 << 1),
OPT_b = (1 << 2),
- OPT_m = (1 << 3),
- OPT_EOF = (1 << 4), /* pseudo: "we saw EOF in stdin" */
+ OPT_H = (1 << 3),
+ OPT_m = (1 << 4),
+ OPT_EOF = (1 << 5), /* pseudo: "we saw EOF in stdin" */
};
#define OPT_BATCH_MODE (option_mask32 & OPT_b)
@@ -1043,7 +1044,8 @@ static unsigned handle_input(unsigned scan_mask, duration_t interval)
//usage:# define IF_SHOW_THREADS_OR_TOP_SMP(...)
//usage:#endif
//usage:#define top_trivial_usage
-//usage: "[-b"IF_FEATURE_TOPMEM("m")"] [-n COUNT] [-d SECONDS]"
+//usage: "[-b"IF_FEATURE_TOPMEM("m")IF_FEATURE_SHOW_THREADS("H")"]"
+//usage: " [-n COUNT] [-d SECONDS]"
//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"
@@ -1076,6 +1078,9 @@ static unsigned handle_input(unsigned scan_mask, duration_t interval)
//usage: IF_FEATURE_TOPMEM(
//usage: "\n"" -m Same as 's' key"
//usage: )
+//usage: IF_FEATURE_SHOW_THREADS(
+//usage: "\n"" -H Show threads"
+//usage: )
/* Interactive testing:
* echo sss | ./busybox top
@@ -1110,7 +1115,8 @@ int top_main(int argc UNUSED_PARAM, char **argv)
/* all args are options; -n NUM */
make_all_argv_opts(argv); /* options can be specified w/o dash */
- col = getopt32(argv, "d:n:b"IF_FEATURE_TOPMEM("m"), &str_interval, &str_iterations);
+ col = getopt32(argv, "d:n:bHm", &str_interval, &str_iterations);
+ /* NB: -m and -H are accepted even if not configured */
#if ENABLE_FEATURE_TOPMEM
if (col & OPT_m) /* -m (busybox specific) */
scan_mask = TOPMEM_MASK;
@@ -1129,6 +1135,11 @@ int top_main(int argc UNUSED_PARAM, char **argv)
str_iterations++;
iterations = xatou(str_iterations);
}
+#if ENABLE_FEATURE_SHOW_THREADS
+ if (col & OPT_H) {
+ scan_mask |= PSSCAN_TASKS;
+ }
+#endif
/* change to /proc */
xchdir("/proc");