X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=libust%2Ftracer.c;h=5f9aa69ffe2d8531f1c88bed35eb910b82b709ae;hb=1518fa0fad67101416c2def6b1c88ec767e8b5eb;hp=d5ec43e8356c2e527bc5642cc301fe1edb273770;hpb=b73a4c471dc987ea8548632dffb3c7050de77dd0;p=lttng-ust.git

diff --git a/libust/tracer.c b/libust/tracer.c
index d5ec43e8..5f9aa69f 100644
--- a/libust/tracer.c
+++ b/libust/tracer.c
@@ -630,6 +630,11 @@ int ltt_trace_alloc(const char *trace_name)
 
 	ltt_lock_traces();
 
+	if (_ltt_trace_find(trace_name)) { /* Trace already allocated */
+		err = 1;
+		goto traces_error;
+	}
+
 	trace = _ltt_trace_find_setup(trace_name);
 	if (!trace) {
 		ERR("Trace not found %s", trace_name);
@@ -779,15 +784,17 @@ traces_error:
 }
 
 /* Sleepable part of the destroy */
-static void __ltt_trace_destroy(struct ust_trace *trace)
+static void __ltt_trace_destroy(struct ust_trace *trace, int drop)
 {
 	int i;
 	struct ust_channel *chan;
 
-	for (i = 0; i < trace->nr_channels; i++) {
-		chan = &trace->channels[i];
-		if (chan->active)
-			trace->ops->finish_channel(chan);
+	if(!drop) {
+		for (i = 0; i < trace->nr_channels; i++) {
+			chan = &trace->channels[i];
+			if (chan->active)
+				trace->ops->finish_channel(chan);
+		}
 	}
 
 	return; /* FIXME: temporary for ust */
@@ -822,7 +829,7 @@ static void __ltt_trace_destroy(struct ust_trace *trace)
 	kref_put(&trace->kref, ltt_release_trace);
 }
 
-int ltt_trace_destroy(const char *trace_name)
+int ltt_trace_destroy(const char *trace_name, int drop)
 {
 	int err = 0;
 	struct ust_trace *trace;
@@ -837,7 +844,7 @@ int ltt_trace_destroy(const char *trace_name)
 
 		ltt_unlock_traces();
 
-		__ltt_trace_destroy(trace);
+		__ltt_trace_destroy(trace, drop);
 //ust//		put_trace_clock();
 
 		return 0;