perf tools: Don't die in perf_header_attr__new()

We really should propagate such kinds of errors so that users of
these library functions decide what to do in such cases instead
of exiting in random places like now.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <1258407027-384-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 04f335e..4c03bb7 100644 (file)
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -220,7 +220,8 @@ static struct perf_header_attr *get_header_attr(struct perf_event_attr *a, int n
                h_attr = header->attr[nr];
        } else {
                h_attr = perf_header_attr__new(a);
-               perf_header__add_attr(header, h_attr);
+               if (h_attr != NULL)
+                       perf_header__add_attr(header, h_attr);
        }
 
        return h_attr;
@@ -308,6 +309,8 @@ try_again:
        }
 
        h_attr = get_header_attr(attr, counter);
+       if (h_attr == NULL)
+               die("nomem\n");
 
        if (!file_new) {
                if (memcmp(&h_attr->attr, attr, sizeof(*attr))) {

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index d8416f0..2f07a23 100644 (file)
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -19,16 +19,16 @@ struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr)
 {
        struct perf_header_attr *self = malloc(sizeof(*self));
 
-       if (!self)
-               die("nomem");
-
-       self->attr = *attr;
-       self->ids = 0;
-       self->size = 1;
-       self->id = malloc(sizeof(u64));
-
-       if (!self->id)
-               die("nomem");
+       if (self != NULL) {
+               self->attr = *attr;
+               self->ids  = 0;
+               self->size = 1;
+               self->id   = malloc(sizeof(u64));
+               if (self->id == NULL) {
+                       free(self);
+                       self = NULL;
+               }
+       }
 
        return self;
 }
@@ -423,6 +423,8 @@ struct perf_header *perf_header__read(int fd)
                tmp = lseek(fd, 0, SEEK_CUR);
 
                attr = perf_header_attr__new(&f_attr.attr);
+               if (attr == NULL)
+                        die("nomem");
 
                nr_ids = f_attr.ids.size / sizeof(u64);
                lseek(fd, f_attr.ids.offset, SEEK_SET);

diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index f1b3bf7..0cbd4c9 100644 (file)
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -64,9 +64,7 @@ void perf_header__add_attr(struct perf_header *self,
 void perf_header__push_event(u64 id, const char *name);
 char *perf_header__find_event(u64 id);
 
-
-struct perf_header_attr *
-perf_header_attr__new(struct perf_event_attr *attr);
+struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr);
 void perf_header_attr__add_id(struct perf_header_attr *self, u64 id);
 
 u64 perf_header__sample_type(struct perf_header *header);