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authorTzvetomir Stoyanov <tstoyanov@vmware.com>2019-04-01 12:43:08 -0400
committerArnaldo Carvalho de Melo <acme@redhat.com>2019-04-01 15:18:09 -0300
commit6699ed712a97f70267e017f509126b890f6f6b28 (patch)
tree51121a341e65c4f38001f329a8a8a21a0f889e61 /tools/lib/traceevent/event-parse.h
parentfed33e905c4beea96a066686f8be2b489eb5068e (diff)
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tools lib traceevent: Implement a new API, tep_list_events_copy()
Existing API tep_list_events() is not thread safe, it uses the internal array sort_events to keep cache of the sorted events and reuses it. This patch implements a new API, tep_list_events_copy(), which allocates new sorted array each time it is called. It could be used when a sorted events functionality is needed in thread safe use cases. It is up to the caller to free the array. Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/linux-trace-devel/20181218133013.31094-1-tstoyanov@vmware.com Link: http://lkml.kernel.org/r/20190401164343.117437443@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.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.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
index aec48f2aea8a..41159358abc2 100644
--- a/tools/lib/traceevent/event-parse.h
+++ b/tools/lib/traceevent/event-parse.h
@@ -544,7 +544,10 @@ void tep_event_info(struct trace_seq *s, struct tep_event *event,
int tep_strerror(struct tep_handle *pevent, enum tep_errno errnum,
char *buf, size_t buflen);
-struct tep_event **tep_list_events(struct tep_handle *pevent, enum tep_event_sort_type);
+struct tep_event **tep_list_events(struct tep_handle *tep,
+ enum tep_event_sort_type);
+struct tep_event **tep_list_events_copy(struct tep_handle *tep,
+ enum tep_event_sort_type);
struct tep_format_field **tep_event_common_fields(struct tep_event *event);
struct tep_format_field **tep_event_fields(struct tep_event *event);