+static
+int trace_pre_handler(struct bt_trace_descriptor *td_write,
+ struct bt_context *ctx)
+{
+ struct ctf_text_stream_pos *sout;
+ struct trace_collection *tc;
+ int ret, i;
+
+ sout = container_of(td_write, struct ctf_text_stream_pos,
+ trace_descriptor);
+
+ if (!sout->parent.pre_trace_cb)
+ return 0;
+
+ tc = ctx->tc;
+ for (i = 0; i < tc->array->len; i++) {
+ struct bt_trace_descriptor *td =
+ g_ptr_array_index(tc->array, i);
+
+ ret = sout->parent.pre_trace_cb(&sout->parent, td);
+ if (ret) {
+ fprintf(stderr, "[error] Writing to trace pre handler failed.\n");
+ goto end;
+ }
+ }
+ ret = 0;
+end:
+ return ret;
+}
+
+static
+int trace_post_handler(struct bt_trace_descriptor *td_write,
+ struct bt_context *ctx)
+{
+ struct ctf_text_stream_pos *sout;
+ struct trace_collection *tc;
+ int ret, i;
+
+ sout = container_of(td_write, struct ctf_text_stream_pos,
+ trace_descriptor);
+
+ if (!sout->parent.post_trace_cb)
+ return 0;
+
+ tc = ctx->tc;
+ for (i = 0; i < tc->array->len; i++) {
+ struct bt_trace_descriptor *td =
+ g_ptr_array_index(tc->array, i);
+
+ ret = sout->parent.post_trace_cb(&sout->parent, td);
+ if (ret) {
+ fprintf(stderr, "[error] Writing to trace post handler failed.\n");
+ goto end;
+ }
+ }
+ ret = 0;
+end:
+ return ret;
+}
+
+static