X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=formats%2Fregistry.c;h=656d6360aca0030856c3a08830998cea1ea4119f;hp=4f9dc244a3618451c54e0f4265563d0a7a0bc739;hb=bc7eb6c8e743cd6ae2c653fc957d19dfaf3fc200;hpb=4c8bfb7e0a9cef6e74cefa38ed54bf8cbd424183

diff --git a/formats/registry.c b/formats/registry.c
index 4f9dc244..656d6360 100644
--- a/formats/registry.c
+++ b/formats/registry.c
@@ -19,6 +19,12 @@
 #include <babeltrace/format.h>
 #include <glib.h>
 #include <errno.h>
+#include <stdio.h>
+
+struct walk_data {
+	FILE *fp;
+	int iter;
+};
 
 static int init_done;
 void __attribute__((constructor)) format_init(void);
@@ -39,6 +45,31 @@ struct format *bt_lookup_format(GQuark qname)
 				   (gconstpointer) (unsigned long) qname);
 }
 
+static void show_format(gpointer key, gpointer value, gpointer user_data)
+{
+	struct walk_data *data = user_data;
+
+	fprintf(data->fp, "%s%s", data->iter ? ", " : "",
+		g_quark_to_string((GQuark) (unsigned long) key));
+	data->iter++;
+}
+
+void bt_fprintf_format_list(FILE *fp)
+{
+	struct walk_data data;
+
+	data.fp = fp;
+	data.iter = 0;
+
+	fprintf(fp, "Formats available: ");
+	if (!init_done)
+		return;
+	g_hash_table_foreach(format_registry, show_format, &data);
+	if (data.iter == 0)
+		fprintf(fp, "<none>");
+	fprintf(fp, ".\n");
+}
+
 int bt_register_format(struct format *format)
 {
 	if (!init_done)
@@ -55,6 +86,8 @@ int bt_register_format(struct format *format)
 
 void format_init(void)
 {
+	if (init_done)
+		return;
 	format_registry = g_hash_table_new(g_direct_hash, g_direct_equal);
 	assert(format_registry);
 	init_done = 1;