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authorGerd Hoffmann <kraxel@redhat.com>2021-06-01 15:24:04 +0200
committerStefan Hajnoczi <stefanha@redhat.com>2021-07-12 17:37:07 +0100
commitc5cc58b176f23f6664d0e12e5956af4d904dcca4 (patch)
tree45741e904ba5308b6b504805e5fc81e09a1e1bc3 /trace/control.c
parent117856c3748dfda50351d1c0328486ede5f2646c (diff)
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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>
Diffstat (limited to 'trace/control.c')
-rw-r--r--trace/control.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/trace/control.c b/trace/control.c
index ed38e81..2c904b7 100644
--- a/trace/control.c
+++ b/trace/control.c
@@ -104,6 +104,7 @@ void trace_event_iter_init_all(TraceEventIter *iter)
{
iter->event = 0;
iter->group = 0;
+ iter->group_id = -1;
iter->pattern = NULL;
}
@@ -113,20 +114,32 @@ void trace_event_iter_init_pattern(TraceEventIter *iter, const char *pattern)
iter->pattern = pattern;
}
+void trace_event_iter_init_group(TraceEventIter *iter, size_t group_id)
+{
+ trace_event_iter_init_all(iter);
+ iter->group_id = group_id;
+}
+
TraceEvent *trace_event_iter_next(TraceEventIter *iter)
{
while (iter->group < nevent_groups &&
event_groups[iter->group].events[iter->event] != NULL) {
TraceEvent *ev = event_groups[iter->group].events[iter->event];
+ size_t group = iter->group;
iter->event++;
if (event_groups[iter->group].events[iter->event] == NULL) {
iter->event = 0;
iter->group++;
}
- if (!iter->pattern ||
- g_pattern_match_simple(iter->pattern, trace_event_get_name(ev))) {
- return ev;
+ if (iter->pattern &&
+ !g_pattern_match_simple(iter->pattern, trace_event_get_name(ev))) {
+ continue;
+ }
+ if (iter->group_id != -1 &&
+ iter->group_id != group) {
+ continue;
}
+ return ev;
}
return NULL;