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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
commit 4dc0a04bb1
5 changed files with 70 additions and 40 deletions
Download patch file Download diff file Expand all files Collapse all files

14
tools/perf/builtin-record.c
View file

@ -400,7 +400,7 @@ static int __cmd_record(int argc, const char **argv)
struct stat st;
pid_t pid = 0;
int flags;
int ret;
int err;
unsigned long waking = 0;
page_size = sysconf(_SC_PAGE_SIZE);
@ -434,16 +434,18 @@ static int __cmd_record(int argc, const char **argv)
exit(-1);
}
if (!file_new)
header = perf_header__read(output);
else
header = perf_header__new();
if (header == NULL) {
pr_err("Not enough memory for reading perf file header\n");
return -1;
}
if (!file_new) {
err = perf_header__read(header, output);
if (err < 0)
return err;
}
if (raw_samples) {
perf_header__set_feat(header, HEADER_TRACE_INFO);
} else {
@ -527,7 +529,7 @@ static int __cmd_record(int argc, const char **argv)
if (hits == samples) {
if (done)
break;
ret = poll(event_array, nr_poll, -1);
err = poll(event_array, nr_poll, -1);
waking++;
}

17
tools/perf/builtin-timechart.c
View file

@ -1093,7 +1093,7 @@ static void process_samples(void)
static int __cmd_timechart(void)
{
int ret, rc = EXIT_FAILURE;
int err, rc = EXIT_FAILURE;
unsigned long offset = 0;
unsigned long head, shift;
struct stat statbuf;
@ -1111,8 +1111,8 @@ static int __cmd_timechart(void)
exit(-1);
}
ret = fstat(input, &statbuf);
if (ret < 0) {
err = fstat(input, &statbuf);
if (err < 0) {
perror("failed to stat file");
exit(-1);
}
@ -1122,7 +1122,16 @@ static int __cmd_timechart(void)
exit(0);
}
header = perf_header__read(input);
header = perf_header__new();
if (header == NULL)
return -ENOMEM;
err = perf_header__read(header, input);
if (err < 0) {
perf_header__delete(header);
return err;
}
head = header->data_offset;
sample_type = perf_header__sample_type(header);

18
tools/perf/util/data_map.c
View file

@ -106,7 +106,7 @@ int mmap_dispatch_perf_file(struct perf_header **pheader,
int *cwdlen,
char **cwd)
{
int ret, rc = EXIT_FAILURE;
int err, rc = EXIT_FAILURE;
struct perf_header *header;
unsigned long head, shift;
unsigned long offset = 0;
@ -132,8 +132,8 @@ int mmap_dispatch_perf_file(struct perf_header **pheader,
exit(-1);
}
ret = fstat(input, &input_stat);
if (ret < 0) {
err = fstat(input, &input_stat);
if (err < 0) {
perror("failed to stat file");
exit(-1);
}
@ -149,8 +149,16 @@ int mmap_dispatch_perf_file(struct perf_header **pheader,
exit(0);
}
*pheader = perf_header__read(input);
header = *pheader;
header = perf_header__new();
if (header == NULL)
return -ENOMEM;
err = perf_header__read(header, input);
if (err < 0) {
perf_header__delete(header);
return err;
}
*pheader = header;
head = header->data_offset;
sample_type = perf_header__sample_type(header);

52
tools/perf/util/header.c
View file

@ -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)

7
tools/perf/util/header.h
View file

@ -55,7 +55,10 @@ struct perf_header {
DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
};
struct perf_header *perf_header__read(int fd);
struct perf_header *perf_header__new(void);
void perf_header__delete(struct perf_header *self);
int perf_header__read(struct perf_header *self, int fd);
void perf_header__write(struct perf_header *self, int fd, bool at_exit);
int perf_header__add_attr(struct perf_header *self,
@ -75,8 +78,6 @@ perf_header__find_attr(u64 id, struct perf_header *header);
void perf_header__set_feat(struct perf_header *self, int feat);
bool perf_header__has_feat(const struct perf_header *self, int feat);
struct perf_header *perf_header__new(void);
int perf_header__process_sections(struct perf_header *self, int fd,
int (*process)(struct perf_file_section *self,
int feat, int fd));