trace-cmd: Add ref counter to record

Add tracecmd_record_ref() to let an application up the reference
to a record to be used at a later moment. This makes sure the record
is not freed by the calling function.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

2 files changed, 6 insertions, 0 deletions

diff --git a/trace-cmd.h b/trace-cmd.h
index b2586bf..b77b8e6 100644
--- a/trace-cmd.h
+++ b/trace-cmd.h
@@ -54,6 +54,7 @@ enum {
 #define TS_SHIFT                27
 #endif
 
+void tracecmd_record_ref(struct record *record);
 void free_record(struct record *record);
 
 struct tracecmd_input;
diff --git a/trace-input.c b/trace-input.c
index 7db5577..1c79843 100644
--- a/trace-input.c
+++ b/trace-input.c
@@ -675,6 +675,11 @@ void free_record(struct record *record)
         __free_record(record);
 }
 
+void tracecmd_record_ref(struct record *record)
+{
+        record->ref_count++;
+}
+
 static void free_next(struct tracecmd_input *handle, int cpu)
 {
         struct record *record = handle->cpu_data[cpu].next;