trace: add trace_event_iter_init_group
This allows to interate over an event group.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20210601132414.432430-4-kraxel@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
diff --git a/trace/control.h b/trace/control.h
index ce40bd0..23b8393 100644
--- a/trace/control.h
+++ b/trace/control.h
@@ -13,8 +13,11 @@
#include "event-internal.h"
typedef struct TraceEventIter {
+ /* iter state */
size_t event;
size_t group;
+ /* filter conditions */
+ size_t group_id;
const char *pattern;
} TraceEventIter;
@@ -40,6 +43,16 @@
void trace_event_iter_init_pattern(TraceEventIter *iter, const char *pattern);
/**
+ * trace_event_iter_init_group:
+ * @iter: the event iterator struct
+ * @group_id: group_id to filter events by group.
+ *
+ * Initialize the event iterator struct @iter,
+ * using @group_id to filter for events in the group.
+ */
+void trace_event_iter_init_group(TraceEventIter *iter, size_t group_id);
+
+/**
* trace_event_iter_next:
* @iter: the event iterator struct
*