perf probe: Use wrapper functions
Use wrapped functions as much as possible, to check out of
memory conditions in perf probe.
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20100316220530.32050.53951.stgit@localhost6.localdomain6>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index 7c004b6..88a3b6d 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -33,6 +33,7 @@
#include <limits.h>
#undef _GNU_SOURCE
+#include "util.h"
#include "event.h"
#include "string.h"
#include "strlist.h"
@@ -90,9 +91,9 @@
if (*tmp != '\0')
semantic_error("Tailing with invalid character '%d'.",
*tmp);
- tmp = strndup(arg, (ptr - arg));
+ tmp = xstrndup(arg, (ptr - arg));
} else
- tmp = strdup(arg);
+ tmp = xstrdup(arg);
if (strchr(tmp, '.'))
lr->file = tmp;
@@ -135,7 +136,7 @@
if (!check_event_name(arg))
semantic_error("%s is bad for event name -it must "
"follow C symbol-naming rule.", arg);
- pp->event = strdup(arg);
+ pp->event = xstrdup(arg);
arg = tmp;
}
@@ -147,17 +148,16 @@
/* Check arg is function or file and copy it */
if (strchr(arg, '.')) /* File */
- pp->file = strdup(arg);
+ pp->file = xstrdup(arg);
else /* Function */
- pp->function = strdup(arg);
- DIE_IF(pp->file == NULL && pp->function == NULL);
+ pp->function = xstrdup(arg);
/* Parse other options */
while (ptr) {
arg = ptr;
c = nc;
if (c == ';') { /* Lazy pattern must be the last part */
- pp->lazy_line = strdup(arg);
+ pp->lazy_line = xstrdup(arg);
break;
}
ptr = strpbrk(arg, ";:+@%");
@@ -181,8 +181,7 @@
case '@': /* File name */
if (pp->file)
semantic_error("SRC@SRC is not allowed.");
- pp->file = strdup(arg);
- DIE_IF(pp->file == NULL);
+ pp->file = xstrdup(arg);
break;
case '%': /* Probe places */
if (strcmp(arg, "return") == 0) {
@@ -247,11 +246,9 @@
/* Copy arguments and ensure return probe has no C argument */
pp->nr_args = argc - 1;
- pp->args = zalloc(sizeof(char *) * pp->nr_args);
+ pp->args = xzalloc(sizeof(char *) * pp->nr_args);
for (i = 0; i < pp->nr_args; i++) {
- pp->args[i] = strdup(argv[i + 1]);
- if (!pp->args[i])
- die("Failed to copy argument.");
+ pp->args[i] = xstrdup(argv[i + 1]);
if (is_c_varname(pp->args[i])) {
if (pp->retprobe)
semantic_error("You can't specify local"
@@ -299,14 +296,12 @@
pp->file = NULL;
pp->nr_args = argc - 2;
- pp->args = zalloc(sizeof(char *) * pp->nr_args);
+ pp->args = xzalloc(sizeof(char *) * pp->nr_args);
for (i = 0; i < pp->nr_args; i++) {
p = strchr(argv[i + 2], '=');
if (p) /* We don't need which register is assigned. */
*p = '\0';
- pp->args[i] = strdup(argv[i + 2]);
- if (!pp->args[i])
- die("Failed to copy argument.");
+ pp->args[i] = xstrdup(argv[i + 2]);
}
argv_free(argv);
@@ -319,10 +314,8 @@
char offs[64] = "", line[64] = "";
int ret;
- pp->probes[0] = buf = zalloc(MAX_CMDLEN);
+ pp->probes[0] = buf = xzalloc(MAX_CMDLEN);
pp->found = 1;
- if (!buf)
- die("Failed to allocate memory by zalloc.");
if (pp->offset) {
ret = e_snprintf(offs, 64, "+%d", pp->offset);
if (ret <= 0)
@@ -380,9 +373,7 @@
char *buf;
int i, len, ret;
- pp->probes[0] = buf = zalloc(MAX_CMDLEN);
- if (!buf)
- die("Failed to allocate memory by zalloc.");
+ pp->probes[0] = buf = xzalloc(MAX_CMDLEN);
ret = e_snprintf(buf, MAX_CMDLEN, "%s+%d", pp->function, pp->offset);
if (ret <= 0)
goto error;
@@ -612,10 +603,9 @@
for (j = 0; j < nr_probes; j++) {
pp = probes + j;
if (!pp->event)
- pp->event = strdup(pp->function);
+ pp->event = xstrdup(pp->function);
if (!pp->group)
- pp->group = strdup(PERFPROBE_GROUP);
- DIE_IF(!pp->event || !pp->group);
+ pp->group = xstrdup(PERFPROBE_GROUP);
/* If force_add is true, suffix search is allowed */
allow_suffix = force_add;
for (i = 0; i < pp->found; i++) {
@@ -709,9 +699,7 @@
namelist = get_perf_event_names(fd, true);
strlist__for_each(ent, dellist) {
- str = strdup(ent->s);
- if (!str)
- die("Failed to copy event.");
+ str = xstrdup(ent->s);
pr_debug("Parsing: %s\n", str);
p = strchr(str, ':');
if (p) {