trace: separate trace event control and query routines from the simple backend
Generalize the 'st_print_trace_events' and 'st_change_trace_event_state' into
backend-specific 'trace_print_events' and 'trace_event_set_state' (respectively)
in the "trace/control.h" file.
Signed-off-by: Lluís Vilanova <[email protected]>
diff --git a/trace/default.c b/trace/default.c
index 42fdb6b..3573d5b 100644
--- a/trace/default.c
+++ b/trace/default.c
@@ -10,6 +10,21 @@
#include "trace/control.h"
+void trace_print_events(FILE *stream, fprintf_function stream_printf)
+{
+ fprintf(stderr, "warning: "
+ "cannot print the trace events with the current backend\n");
+ stream_printf(stream, "error: "
+ "operation not supported with the current backend\n");
+}
+
+bool trace_event_set_state(const char *name, bool state)
+{
+ fprintf(stderr, "warning: "
+ "cannot set the state of a trace event with the current backend\n");
+ return false;
+}
+
bool trace_backend_init(const char *file)
{
if (file) {
