X-Git-Url: http://git.efficios.com/?p=babeltrace.git;a=blobdiff_plain;f=lib%2Ftrace-handle.c;h=f981adda410ab19266c2213c6ce50cae09a0b73d;hp=5058d37318f1fdb37148f82e9f4eb37bcf9a4a19;hb=9b3c1d6f8e01603488e317ffef7a8e3c15c98459;hpb=03798a93f959f6c694fe98f5647481947607c604

diff --git a/lib/trace-handle.c b/lib/trace-handle.c
index 5058d373..f981adda 100644
--- a/lib/trace-handle.c
+++ b/lib/trace-handle.c
@@ -31,6 +31,9 @@ struct bt_trace_handle *bt_trace_handle_create(struct bt_context *ctx)
 {
 	struct bt_trace_handle *th;
 
+	if (!ctx)
+		return NULL;
+
 	th = g_new0(struct bt_trace_handle, 1);
 	th->id = ctx->last_trace_handle_id++;
 	return th;
@@ -43,6 +46,9 @@ void bt_trace_handle_destroy(struct bt_trace_handle *th)
 
 int bt_trace_handle_get_id(struct bt_trace_handle *th)
 {
+	if (!th)
+		return -1;
+
 	return th->id;
 }
 
@@ -50,6 +56,9 @@ const char *bt_trace_handle_get_path(struct bt_context *ctx, int handle_id)
 {
 	struct bt_trace_handle *handle;
 
+	if (!ctx)
+		return NULL;
+
 	handle = g_hash_table_lookup(ctx->trace_handles,
 			(gpointer) (unsigned long) handle_id);
 	if (!handle)
@@ -63,6 +72,9 @@ uint64_t bt_trace_handle_get_timestamp_begin(struct bt_context *ctx,
 	struct bt_trace_handle *handle;
 	uint64_t ret;
 
+	if (!ctx)
+		return -1ULL;
+
 	handle = g_hash_table_lookup(ctx->trace_handles,
 			(gpointer) (unsigned long) handle_id);
 	if (!handle) {
@@ -87,6 +99,9 @@ uint64_t bt_trace_handle_get_timestamp_end(struct bt_context *ctx,
 	struct bt_trace_handle *handle;
 	uint64_t ret;
 
+	if (!ctx)
+		return -1ULL;
+
 	handle = g_hash_table_lookup(ctx->trace_handles,
 			(gpointer) (unsigned long) handle_id);
 	if (!handle) {