perf tools: perf_header__read() shouldn't die()
And also don't call the constructor in it, this way it adheres
to the model the other methods follow.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1258649757-17554-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 425a29b..e66c7bd 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -78,16 +78,24 @@
return self;
}
+void perf_header__delete(struct perf_header *self)
+{
+ int i;
+
+ for (i = 0; i < self->attrs; ++i)
+ perf_header_attr__delete(self->attr[i]);
+
+ free(self->attr);
+ free(self);
+}
+
int perf_header__add_attr(struct perf_header *self,
struct perf_header_attr *attr)
{
- int pos = self->attrs;
-
if (self->frozen)
return -1;
- self->attrs++;
- if (self->attrs > self->size) {
+ if (self->attrs == self->size) {
int nsize = self->size * 2;
struct perf_header_attr **nattr;
@@ -98,7 +106,8 @@
self->size = nsize;
self->attr = nattr;
}
- self->attr[pos] = attr;
+
+ self->attr[self->attrs++] = attr;
return 0;
}
@@ -441,19 +450,17 @@
return 0;
}
-struct perf_header *perf_header__read(int fd)
+int perf_header__read(struct perf_header *self, int fd)
{
- struct perf_header *self = perf_header__new();
struct perf_file_header f_header;
struct perf_file_attr f_attr;
u64 f_id;
int nr_attrs, nr_ids, i, j;
- if (self == NULL)
- die("nomem");
-
- if (perf_file_header__read(&f_header, self, fd) < 0)
- die("incompatible file format");
+ if (perf_file_header__read(&f_header, self, fd) < 0) {
+ pr_debug("incompatible file format\n");
+ return -EINVAL;
+ }
nr_attrs = f_header.attrs.size / sizeof(f_attr);
lseek(fd, f_header.attrs.offset, SEEK_SET);
@@ -467,7 +474,7 @@
attr = perf_header_attr__new(&f_attr.attr);
if (attr == NULL)
- die("nomem");
+ return -ENOMEM;
nr_ids = f_attr.ids.size / sizeof(u64);
lseek(fd, f_attr.ids.offset, SEEK_SET);
@@ -475,11 +482,15 @@
for (j = 0; j < nr_ids; j++) {
do_read(fd, &f_id, sizeof(f_id));
- if (perf_header_attr__add_id(attr, f_id) < 0)
- die("nomem");
+ if (perf_header_attr__add_id(attr, f_id) < 0) {
+ perf_header_attr__delete(attr);
+ return -ENOMEM;
+ }
}
- if (perf_header__add_attr(self, attr) < 0)
- die("nomem");
+ if (perf_header__add_attr(self, attr) < 0) {
+ perf_header_attr__delete(attr);
+ return -ENOMEM;
+ }
lseek(fd, tmp, SEEK_SET);
}
@@ -487,8 +498,8 @@
if (f_header.event_types.size) {
lseek(fd, f_header.event_types.offset, SEEK_SET);
events = malloc(f_header.event_types.size);
- if (!events)
- die("nomem");
+ if (events == NULL)
+ return -ENOMEM;
do_read(fd, events, f_header.event_types.size);
event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type);
}
@@ -498,8 +509,7 @@
lseek(fd, self->data_offset, SEEK_SET);
self->frozen = 1;
-
- return self;
+ return 0;
}
u64 perf_header__sample_type(struct perf_header *header)