aboutsummaryrefslogtreecommitdiff
path: root/tools/lib/traceevent/event-parse.h
diff options
context:
space:
mode:
authorNamhyung Kim <namhyung.kim@lge.com>2012-08-22 16:00:29 +0900
committerArnaldo Carvalho de Melo <acme@redhat.com>2012-08-22 16:02:59 -0300
commitbffddffde7f9bd093909235a25dbb806fe639dde (patch)
tree9e290ae4cddff7ae48fa20e1f3312ebcdd418ab4 /tools/lib/traceevent/event-parse.h
parentfd34f0b26c9d0f3c3c5c5f83207efa6324cd19f7 (diff)
downloadvexpress-lsk-bffddffde7f9bd093909235a25dbb806fe639dde.tar.gz
tools lib traceevent: Introduce pevent_errno
Define and use error numbers for pevent_parse_event() and get rid of die() and do_warning() calls. If the function returns non-zero value, the caller can check the return code and do appropriate things. I chose the error numbers to be negative not to clash with standard errno, and as usual, 0 for success. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/1345618831-9148-3-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib/traceevent/event-parse.h')
-rw-r--r--tools/lib/traceevent/event-parse.h26
1 files changed, 24 insertions, 2 deletions
diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
index 5772ad8cb38..3c48229a7bc 100644
--- a/tools/lib/traceevent/event-parse.h
+++ b/tools/lib/traceevent/event-parse.h
@@ -345,6 +345,28 @@ enum pevent_flag {
PEVENT_NSEC_OUTPUT = 1, /* output in NSECS */
};
+enum pevent_errno {
+ PEVENT_ERRNO__SUCCESS = 0,
+
+ /*
+ * Choose an arbitrary negative big number not to clash with standard
+ * errno since SUS requires the errno has distinct positive values.
+ * See 'Issue 6' in the link below.
+ *
+ * http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/errno.h.html
+ */
+ __PEVENT_ERRNO__START = -100000,
+
+ PEVENT_ERRNO__MEM_ALLOC_FAILED = __PEVENT_ERRNO__START,
+ PEVENT_ERRNO__PARSE_EVENT_FAILED,
+ PEVENT_ERRNO__READ_ID_FAILED,
+ PEVENT_ERRNO__READ_FORMAT_FAILED,
+ PEVENT_ERRNO__READ_PRINT_FAILED,
+ PEVENT_ERRNO__OLD_FTRACE_ARG_FAILED,
+
+ __PEVENT_ERRNO__END,
+};
+
struct cmdline;
struct cmdline_list;
struct func_map;
@@ -509,8 +531,8 @@ void pevent_print_event(struct pevent *pevent, struct trace_seq *s,
int pevent_parse_header_page(struct pevent *pevent, char *buf, unsigned long size,
int long_size);
-int pevent_parse_event(struct pevent *pevent, const char *buf,
- unsigned long size, const char *sys);
+enum pevent_errno pevent_parse_event(struct pevent *pevent, const char *buf,
+ unsigned long size, const char *sys);
void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event,
const char *name, struct pevent_record *record,