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tools lib traceevent: Implement new API tep_get_ref()

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This patch implements a new API of the tracevent library:

  int tep_get_ref(struct tep_handle *tep);

The API returns the reference counter "ref_count" of the tep handler.
As "struct tep_handle" is internal only, its members cannot be accessed
by the library users, the API is used to get the reference counter.

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://lkml.kernel.org/r/20181130154646.890615385@goodmis.org
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Tzvetomir Stoyanov 2018-11-30 10:44:04 -05:00 committed by Arnaldo Carvalho de Melo
parent 239ca3e786
commit 477be10ca7
2 changed files with 8 additions and 0 deletions
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7
tools/lib/traceevent/event-parse.c
View File

@ -6730,6 +6730,13 @@ void tep_ref(struct tep_handle *pevent)
pevent->ref_count++;
}
int tep_get_ref(struct tep_handle *tep)
{
if (tep)
return tep->ref_count;
return 0;
}
void tep_free_format_field(struct tep_format_field *field)
{
free(field->type);

1
tools/lib/traceevent/event-parse.h
View File

@ -581,6 +581,7 @@ struct tep_handle *tep_alloc(void);
void tep_free(struct tep_handle *pevent);
void tep_ref(struct tep_handle *pevent);
void tep_unref(struct tep_handle *pevent);
int tep_get_ref(struct tep_handle *tep);
/* access to the internal parser */
void tep_buffer_init(const char *buf, unsigned long long size);