X-Git-Url: https://git.liburcu.org/?a=blobdiff_plain;f=libust%2Fmarker.c;h=dc2747f0b17bbc8c613ce3c57fb38194bb877dac;hb=3b297856588b77dcd20ad7497ee46ab68c94c4d9;hp=8ca028c3e0f38f36cbadf18fabcb413452a6011c;hpb=900e307ed99ca9cb4bfe574ee4f4e1bd9c1baccc;p=ust.git

diff --git a/libust/marker.c b/libust/marker.c
index 8ca028c..dc2747f 100644
--- a/libust/marker.c
+++ b/libust/marker.c
@@ -685,6 +685,8 @@ void marker_update_probe_range(struct marker * const *begin,
 
 	pthread_mutex_lock(&markers_mutex);
 	for (iter = begin; iter < end; iter++) {
+		if (!*iter)
+			continue;	/* skip dummy */
 		mark_entry = get_marker((*iter)->channel, (*iter)->name);
 		if (mark_entry) {
 			set_marker(mark_entry, *iter, !!mark_entry->refcount);
@@ -1114,12 +1116,14 @@ int marker_get_iter_range(struct marker * const **marker,
 	struct marker * const *begin,
 	struct marker * const *end)
 {
-	if (!*marker && begin != end) {
+	if (!*marker && begin != end)
 		*marker = begin;
-		return 1;
+	while (*marker >= begin && *marker < end) {
+		if (!**marker)
+			(*marker)++;	/* skip dummy */
+		else
+			return 1;
 	}
-	if (*marker >= begin && *marker < end)
-		return 1;
 	return 0;
 }
 //ust// EXPORT_SYMBOL_GPL(marker_get_iter_range);
@@ -1342,15 +1346,17 @@ static void new_markers(struct marker * const *start, struct marker * const *end
 {
 	if (new_marker_cb) {
 		struct marker * const *m;
-		for(m=start; m < end; m++) {
-			new_marker_cb(*m);
+
+		for(m = start; m < end; m++) {
+			if (*m)
+				new_marker_cb(*m);
 		}
 	}
 }
 
 int marker_register_lib(struct marker * const *markers_start, int markers_count)
 {
-	struct lib *pl;
+	struct lib *pl, *iter;
 
 	pl = (struct lib *) zmalloc(sizeof(struct lib));
 
@@ -1359,7 +1365,21 @@ int marker_register_lib(struct marker * const *markers_start, int markers_count)
 
 	/* FIXME: maybe protect this with its own mutex? */
 	lock_markers();
+
+	/*
+	 * We sort the libs by struct lib pointer address.
+	 */
+	cds_list_for_each_entry_reverse(iter, &libs, list) {
+		BUG_ON(iter == pl);    /* Should never be in the list twice */
+		if (iter < pl) {
+			/* We belong to the location right after iter. */
+			cds_list_add(&pl->list, &iter->list);
+			goto lib_added;
+		}
+	}
+	/* We should be added at the head of the list */
 	cds_list_add(&pl->list, &libs);
+lib_added:
 	unlock_markers();
 
 	new_markers(markers_start, markers_start + markers_count);
@@ -1367,7 +1387,7 @@ int marker_register_lib(struct marker * const *markers_start, int markers_count)
 	/* FIXME: update just the loaded lib */
 	lib_update_markers();
 
-	DBG("just registered a markers section from %p and having %d markers", markers_start, markers_count);
+	DBG("just registered a markers section from %p and having %d markers (minus dummy markers)", markers_start, markers_count);
 	
 	return 0;
 }
@@ -1409,7 +1429,7 @@ void __attribute__((constructor)) init_markers(void)
 	}
 }
 
-void __attribute__((constructor)) destroy_markers(void)
+void __attribute__((destructor)) destroy_markers(void)
 {
 	marker_unregister_lib(__start___markers_ptrs);
 }