fix "ps sm" bug involving 1-thread-proc optimization
This commit is contained in:
albert
parent
20fba946af
commit
5c591b836f
2
NEWS
2
NEWS
@ -1,7 +1,9 @@
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procps-3.2.6 --> procps-3.2.7
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top: document H option -- thanks Tony Ernst
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top: terabytes -- thanks Tony Ernst
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ps: SCHED_BATCH is B
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ps: fix s format (signals) output with thread display
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procps-3.2.5 --> procps-3.2.6
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60
pgrep.c
60
pgrep.c
@ -83,7 +83,7 @@ split_list (const char *restrict str, int (*convert)(const char *, union el *))
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int i = 1, size = 32;
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union el *list;
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list = malloc (size * sizeof (union el));
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list = malloc (size * sizeof *list);
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if (list == NULL)
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exit (3);
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@ -97,7 +97,7 @@ split_list (const char *restrict str, int (*convert)(const char *, union el *))
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exit (2);
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if (i == size) {
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size *= 2;
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list = realloc (list, size * sizeof (union el));
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list = realloc (list, size * sizeof *list);
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if (list == NULL)
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exit (3);
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}
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@ -112,7 +112,7 @@ split_list (const char *restrict str, int (*convert)(const char *, union el *))
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} else {
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list[0].num = i - 1;
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}
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return (list);
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return list;
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}
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/* strict_atol returns a Boolean: TRUE if the input string contains a
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@ -138,7 +138,7 @@ strict_atol (const char *restrict str, long *restrict value)
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res += *str - '0';
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}
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*value = sign * res;
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return (1);
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return 1;
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}
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static int
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@ -153,10 +153,10 @@ conv_uid (const char *restrict name, union el *restrict e)
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if (pwd == NULL) {
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fprintf (stderr, "%s: invalid user name: %s\n",
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progname, name);
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return (0);
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return 0;
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}
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e->num = pwd->pw_uid;
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return (1);
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return 1;
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}
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@ -166,16 +166,16 @@ conv_gid (const char *restrict name, union el *restrict e)
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struct group *grp;
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if (strict_atol (name, &e->num))
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return (1);
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return 1;
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grp = getgrnam (name);
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if (grp == NULL) {
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fprintf (stderr, "%s: invalid group name: %s\n",
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progname, name);
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return (0);
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return 0;
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}
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e->num = grp->gr_gid;
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return (1);
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return 1;
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}
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@ -185,11 +185,11 @@ conv_pgrp (const char *restrict name, union el *restrict e)
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if (! strict_atol (name, &e->num)) {
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fprintf (stderr, "%s: invalid process group: %s\n",
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progname, name);
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return (0);
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return 0;
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}
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if (e->num == 0)
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e->num = getpgrp ();
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return (1);
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return 1;
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}
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@ -199,11 +199,11 @@ conv_sid (const char *restrict name, union el *restrict e)
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if (! strict_atol (name, &e->num)) {
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fprintf (stderr, "%s: invalid session id: %s\n",
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progname, name);
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return (0);
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return 0;
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}
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if (e->num == 0)
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e->num = getsid (0);
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return (1);
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return 1;
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}
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@ -213,9 +213,9 @@ conv_num (const char *restrict name, union el *restrict e)
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if (! strict_atol (name, &e->num)) {
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fprintf (stderr, "%s: not a number: %s\n",
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progname, name);
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return (0);
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return 0;
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}
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return (1);
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return 1;
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}
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@ -223,7 +223,7 @@ static int
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conv_str (const char *restrict name, union el *restrict e)
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{
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e->str = strdup (name);
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return (1);
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return 1;
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}
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@ -240,7 +240,7 @@ match_numlist (long value, const union el *restrict list)
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found = 1;
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}
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}
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return (found);
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return found;
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}
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static int
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@ -256,7 +256,7 @@ match_strlist (const char *restrict value, const union el *restrict list)
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found = 1;
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}
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}
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return (found);
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return found;
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}
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static void
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@ -310,7 +310,7 @@ do_openproc (void)
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} else {
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ptp = openproc (flags);
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}
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return (ptp);
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return ptp;
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}
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static regex_t *
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@ -346,7 +346,7 @@ do_regcomp (void)
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}
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static union el *
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select_procs (void)
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select_procs (int *num)
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{
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PROCTAB *ptp;
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proc_t task;
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@ -359,7 +359,7 @@ select_procs (void)
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union el *list;
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char cmd[4096];
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list = malloc (size * sizeof (union el));
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list = malloc (size * sizeof *list);
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if (list == NULL)
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exit (3);
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@ -450,14 +450,13 @@ select_procs (void)
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if (opt_long) {
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char buff[5096]; // FIXME
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sprintf (buff, "%d %s", task.XXXID, cmd);
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list[++matches].str = strdup (buff);
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list[matches++].str = strdup (buff);
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} else {
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list[++matches].num = task.XXXID;
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list[matches++].num = task.XXXID;
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}
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if (matches == size) {
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size *= 2;
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list = realloc (list,
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size * sizeof (union el));
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list = realloc(list, size * sizeof *list);
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if (list == NULL)
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exit (3);
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}
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@ -467,8 +466,8 @@ select_procs (void)
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}
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closeproc (ptp);
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list[0].num = matches;
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return (list);
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*num = matches;
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return list;
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}
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@ -607,13 +606,14 @@ int
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main (int argc, char **argv)
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{
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union el *procs;
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int num;
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parse_opts (argc, argv);
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procs = select_procs ();
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procs = select_procs (&num);
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if (i_am_pkill) {
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int i;
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for (i = 1; i <= procs[0].num; i++) {
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for (i = 0; i < num; i++) {
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if (kill (procs[i].num, opt_signal) != -1) continue;
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if (errno==ESRCH) continue; // gone now, which is OK
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fprintf (stderr, "pkill: %ld - %s\n",
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@ -625,5 +625,5 @@ main (int argc, char **argv)
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else
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output_numlist (procs);
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}
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return ((procs[0].num) == 0 ? 1 : 0);
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return !num;
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}
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@ -37,6 +37,17 @@ extern void __cyg_profile_func_enter(void*,void*);
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#define LEAVE(x)
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#endif
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// convert hex string to unsigned long long
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static unsigned long long unhex(const char *restrict cp){
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unsigned long long ull = 0;
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for(;;){
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char c = *cp++;
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if(unlikely(c<0x30)) break;
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ull = (ull<<4) | (c - (c>0x57) ? 0x57 : 0x30) ;
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}
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return ull;
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}
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static int task_dir_missing;
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///////////////////////////////////////////////////////////////////////////
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@ -71,7 +82,6 @@ typedef struct status_table_struct {
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// must be padded out to 64 entries, maybe 128 in the future.
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static void status2proc(char *S, proc_t *restrict P, int is_proc){
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char ShdPnd[16] = "";
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long Threads = 0;
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long Tgid = 0;
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long Pid = 0;
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@ -147,6 +157,7 @@ ENTER(0x220);
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P->vm_exe = 0;
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P->vm_lib = 0;
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P->nlwp = 0;
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P->signal[0] = '\0'; // so we can detect it as missing for very old kernels
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goto base;
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@ -195,9 +206,10 @@ ENTER(0x220);
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S--; // put back the '\n' or '\0'
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continue;
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}
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#ifdef SIGNAL_STRING
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case_ShdPnd:
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memcpy(ShdPnd, S, 16);
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// we know it to be 16 char, so no '\0' needed
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memcpy(P->signal, S, 16);
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P->signal[16] = '\0';
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continue;
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case_SigBlk:
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memcpy(P->blocked, S, 16);
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@ -212,9 +224,26 @@ ENTER(0x220);
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P->sigignore[16] = '\0';
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continue;
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case_SigPnd:
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memcpy(P->signal, S, 16);
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P->signal[16] = '\0';
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memcpy(P->_sigpnd, S, 16);
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P->_sigpnd[16] = '\0';
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continue;
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#else
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case_ShdPnd:
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P->signal = unhex(S);
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continue;
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case_SigBlk:
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P->blocked = unhex(S);
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continue;
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case_SigCgt:
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P->sigcatch = unhex(S);
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continue;
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case_SigIgn:
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P->sigignore = unhex(S);
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continue;
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case_SigPnd:
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P->_sigpnd = unhex(S);
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continue;
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#endif
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case_State:
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P->state = *S;
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continue;
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@ -265,11 +294,25 @@ ENTER(0x220);
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continue;
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}
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#if 0
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// recent kernels supply per-tgid pending signals
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if(is_proc && *ShdPnd){
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memcpy(P->signal, ShdPnd, 16);
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P->signal[16] = '\0';
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}
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#endif
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// recent kernels supply per-tgid pending signals
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#ifdef SIGNAL_STRING
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if(!is_proc || !P->signal[0]){
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memcpy(P->signal, P->_sigpnd, 16);
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P->signal[16] = '\0';
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}
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#else
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if(!is_proc || !have_process_pending){
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P->signal = P->_sigpnd;
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}
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#endif
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// Linux 2.4.13-pre1 to max 2.4.xx have a useless "Tgid"
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// that is not initialized for built-in kernel tasks.
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@ -764,11 +807,17 @@ proc_t* readtask(PROCTAB *restrict const PT, const proc_t *restrict const p, pro
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if(!t) t = xcalloc(t, sizeof *t); /* passed buf or alloced mem */
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// 1. got to fake a thread for old kernels
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// 2. for single-threaded processes, this is faster
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// 2. for single-threaded processes, this is faster (but must patch up stuff that differs!)
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if(task_dir_missing || p->nlwp < 2){
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if(PT->did_fake) goto out;
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PT->did_fake=1;
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memcpy(t,p,sizeof(proc_t));
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// use the per-task pending, not per-tgid pending
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#ifdef SIGNAL_STRING
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memcpy(&t->signal, &t->_sigpnd, sizeof t->signal);
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#else
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t->signal = t->_sigpnd;
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#endif
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return t;
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}
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@ -58,17 +58,19 @@ typedef struct proc_t {
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#ifdef SIGNAL_STRING
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char
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// Linux 2.1.7x and up have 64 signals. Allow 64, plus '\0' and padding.
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signal[18], // status mask of pending signals
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signal[18], // status mask of pending signals, per-task for readtask() but per-proc for readproc()
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blocked[18], // status mask of blocked signals
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sigignore[18], // status mask of ignored signals
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sigcatch[18]; // status mask of caught signals
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sigcatch[18], // status mask of caught signals
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_sigpnd[18]; // status mask of PER TASK pending signals
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#else
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long long
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// Linux 2.1.7x and up have 64 signals.
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signal, // status mask of pending signals
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signal, // status mask of pending signals, per-task for readtask() but per-proc for readproc()
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blocked, // status mask of blocked signals
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sigignore, // status mask of ignored signals
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sigcatch; // status mask of caught signals
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sigcatch, // status mask of caught signals
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_sigpnd; // status mask of PER TASK pending signals
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#endif
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unsigned KLONG
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start_code, // stat address of beginning of code segment
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