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perf tools: perf_header__read() shouldn't die()

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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>
This commit is contained in:
Arnaldo Carvalho de Melo 2009-11-19 14:55:55 -02:00 • committed by Ingo Molnar
parent 2446042c93
commit 4dc0a04bb1
5 changed files with 70 additions and 40 deletions
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52
tools/perf/util/header.c
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@ -78,16 +78,24 @@ struct perf_header *perf_header__new(void)
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 @@ int perf_header__add_attr(struct perf_header *self,
self->size = nsize;
self->attr = nattr;
}
self->attr[pos] = attr;
self->attr[self->attrs++] = attr;
return 0;
}
@ -441,19 +450,17 @@ static int perf_file_section__process(struct perf_file_section *self,
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 @@ struct perf_header *perf_header__read(int fd)
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 @@ struct perf_header *perf_header__read(int fd)
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) {
perf_header_attr__delete(attr);
return -ENOMEM;
}
if (perf_header__add_attr(self, attr) < 0)
die("nomem");
lseek(fd, tmp, SEEK_SET);
}
@ -487,8 +498,8 @@ struct perf_header *perf_header__read(int fd)
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 @@ struct perf_header *perf_header__read(int fd)
lseek(fd, self->data_offset, SEEK_SET);
self->frozen = 1;
return self;
return 0;
}
u64 perf_header__sample_type(struct perf_header *header)