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authorDenis Vlasenko <vda.linux@googlemail.com>2007-06-30 14:47:41 +0000
committerDenis Vlasenko <vda.linux@googlemail.com>2007-06-30 14:47:41 +0000
commit98ebab8b768d4651d8db2f46a0cd6bd53012c8e6 (patch)
tree2f491e67f1f49a31b0cfeeaabb032b646b8d808c /procps/ps.c
parent8b1409896d3224fec477bc372c4dceaebe6d6351 (diff)
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top,ps: improve /proc/PID/cmdinfo reading code
function old new delta display_status - 1231 +1231 read_cmdline - 101 +101 parse_conf 1284 1303 +19 arith 2033 2042 +9 collect_blk 467 474 +7 fsck_main 1909 1911 +2 dhcprelay_main 1125 1122 -3 singlemount 4555 4547 -8 read_close 50 36 -14 get_lcm 123 105 -18 ed_main 3111 3084 -27 func_args 73 28 -45 procps_scan 732 658 -74 top_main 2187 899 -1288 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 4/8 up/down: 1369/-1477) Total: -108 bytes text data bss dec hex filename 676048 2744 13968 692760 a9218 busybox_old 675940 2744 13968 692652 a91ac busybox_unstripped
Diffstat (limited to 'procps/ps.c')
-rw-r--r--procps/ps.c63
1 files changed, 24 insertions, 39 deletions
diff --git a/procps/ps.c b/procps/ps.c
index 003e8eacd..c6bffc60d 100644
--- a/procps/ps.c
+++ b/procps/ps.c
@@ -27,11 +27,7 @@ static void func_comm(char *buf, int size, const procps_status_t *ps)
27 27
28static void func_args(char *buf, int size, const procps_status_t *ps) 28static void func_args(char *buf, int size, const procps_status_t *ps)
29{ 29{
30 buf[0] = '\0'; 30 read_cmdline(buf, size, ps->pid, ps->comm);
31 if (ps->cmd)
32 safe_strncpy(buf, ps->cmd, size+1);
33 else if (size >= 2)
34 sprintf(buf, "[%.*s]", size-2, ps->comm);
35} 31}
36 32
37static void func_pid(char *buf, int size, const procps_status_t *ps) 33static void func_pid(char *buf, int size, const procps_status_t *ps)
@@ -112,25 +108,25 @@ typedef struct {
112 108
113static const ps_out_t out_spec[] = { 109static const ps_out_t out_spec[] = {
114// Mandated by POSIX: 110// Mandated by POSIX:
115 { 8 , "user" ,"USER" ,func_user ,PSSCAN_UIDGID }, 111 { 8 , "user" ,"USER" ,func_user ,PSSCAN_UIDGID },
116 { 16 , "comm" ,"COMMAND",func_comm ,PSSCAN_COMM }, 112 { 16 , "comm" ,"COMMAND",func_comm ,PSSCAN_COMM },
117 { 256 , "args" ,"COMMAND",func_args ,PSSCAN_CMD|PSSCAN_COMM }, 113 { 256 , "args" ,"COMMAND",func_args ,PSSCAN_COMM },
118 { 5 , "pid" ,"PID" ,func_pid ,PSSCAN_PID }, 114 { 5 , "pid" ,"PID" ,func_pid ,PSSCAN_PID },
119 { 5 , "ppid" ,"PPID" ,func_ppid ,PSSCAN_PPID }, 115 { 5 , "ppid" ,"PPID" ,func_ppid ,PSSCAN_PPID },
120 { 5 , "pgid" ,"PGID" ,func_pgid ,PSSCAN_PGID }, 116 { 5 , "pgid" ,"PGID" ,func_pgid ,PSSCAN_PGID },
121// { sizeof("ELAPSED")-1, "etime" ,"ELAPSED",func_etime ,PSSCAN_ }, 117// { sizeof("ELAPSED")-1, "etime" ,"ELAPSED",func_etime ,PSSCAN_ },
122// { sizeof("GROUP" )-1, "group" ,"GROUP" ,func_group ,PSSCAN_UIDGID }, 118// { sizeof("GROUP" )-1, "group" ,"GROUP" ,func_group ,PSSCAN_UIDGID },
123// { sizeof("NI" )-1, "nice" ,"NI" ,func_nice ,PSSCAN_ }, 119// { sizeof("NI" )-1, "nice" ,"NI" ,func_nice ,PSSCAN_ },
124// { sizeof("%CPU" )-1, "pcpu" ,"%CPU" ,func_pcpu ,PSSCAN_ }, 120// { sizeof("%CPU" )-1, "pcpu" ,"%CPU" ,func_pcpu ,PSSCAN_ },
125// { sizeof("RGROUP" )-1, "rgroup","RGROUP" ,func_rgroup,PSSCAN_UIDGID }, 121// { sizeof("RGROUP" )-1, "rgroup","RGROUP" ,func_rgroup,PSSCAN_UIDGID },
126// { sizeof("RUSER" )-1, "ruser" ,"RUSER" ,func_ruser ,PSSCAN_UIDGID }, 122// { sizeof("RUSER" )-1, "ruser" ,"RUSER" ,func_ruser ,PSSCAN_UIDGID },
127// { sizeof("TIME" )-1, "time" ,"TIME" ,func_time ,PSSCAN_ }, 123// { sizeof("TIME" )-1, "time" ,"TIME" ,func_time ,PSSCAN_ },
128 { 6 , "tty" ,"TT" ,func_tty ,PSSCAN_TTY }, 124 { 6 , "tty" ,"TT" ,func_tty ,PSSCAN_TTY },
129 { 4 , "vsz" ,"VSZ" ,func_vsz ,PSSCAN_VSZ }, 125 { 4 , "vsz" ,"VSZ" ,func_vsz ,PSSCAN_VSZ },
130// Not mandated by POSIX, but useful: 126// Not mandated by POSIX, but useful:
131 { 4 , "rss" ,"RSS" ,func_rss ,PSSCAN_RSS }, 127 { 4 , "rss" ,"RSS" ,func_rss ,PSSCAN_RSS },
132#if ENABLE_SELINUX 128#if ENABLE_SELINUX
133 { 35 , "label" ,"LABEL" ,func_label ,PSSCAN_CONTEXT }, 129 { 35 , "label" ,"LABEL" ,func_label ,PSSCAN_CONTEXT },
134#endif 130#endif
135}; 131};
136 132
@@ -386,10 +382,9 @@ int ps_main(int argc, char **argv)
386 | PSSCAN_UIDGID 382 | PSSCAN_UIDGID
387 | PSSCAN_STATE 383 | PSSCAN_STATE
388 | PSSCAN_VSZ 384 | PSSCAN_VSZ
389 | PSSCAN_CMD 385 | PSSCAN_COMM
390 | use_selinux 386 | use_selinux
391 ))) { 387 ))) {
392 char *namecmd = p->cmd;
393#if ENABLE_SELINUX 388#if ENABLE_SELINUX
394 if (use_selinux) { 389 if (use_selinux) {
395 len = printf("%5u %-32s %s ", 390 len = printf("%5u %-32s %s ",
@@ -408,21 +403,11 @@ int ps_main(int argc, char **argv)
408 p->pid, user, p->vsz, p->state); 403 p->pid, user, p->vsz, p->state);
409 } 404 }
410 405
411 i = terminal_width-len; 406 {
412 407 char sz = terminal_width - len;
413 if (namecmd && namecmd[0]) { 408 char buf[sz + 1];
414 if (i < 0) 409 read_cmdline(buf, sz, p->pid, p->comm);
415 i = 0; 410 puts(buf);
416 if (strlen(namecmd) > (size_t)i)
417 namecmd[i] = '\0';
418 puts(namecmd);
419 } else {
420 namecmd = p->comm;
421 if (i < 2)
422 i = 2;
423 if (strlen(namecmd) > ((size_t)i-2))
424 namecmd[i-2] = '\0';
425 printf("[%s]\n", namecmd);
426 } 411 }
427 } 412 }
428 if (ENABLE_FEATURE_CLEAN_UP) 413 if (ENABLE_FEATURE_CLEAN_UP)