#include <babeltrace/ctf-ir/field-types-internal.h>
#include <babeltrace/ctf-ir/attributes-internal.h>
#include <babeltrace/ctf-ir/validation-internal.h>
+#include <babeltrace/ctf-ir/visitor-internal.h>
#include <babeltrace/ctf-ir/utils.h>
+#include <babeltrace/plugin/notification/schema.h>
#include <babeltrace/compiler.h>
#include <babeltrace/values.h>
#include <babeltrace/ref.h>
#define DEFAULT_IDENTIFIER_SIZE 128
#define DEFAULT_METADATA_STRING_SIZE 4096
+struct listener_wrapper {
+ bt_ctf_listener_cb listener;
+ void *data;
+};
+
static
void bt_ctf_trace_destroy(struct bt_object *obj);
static
goto error;
}
+ trace->listeners = g_ptr_array_new_with_free_func(
+ (GDestroyNotify) g_free);
+ if (!trace->listeners) {
+ goto error;
+ }
+
return trace;
error:
g_ptr_array_free(trace->stream_classes, TRUE);
}
+ if (trace->listeners) {
+ g_ptr_array_free(trace->listeners, TRUE);
+ }
+
bt_put(trace->packet_header_type);
g_free(trace);
}
int ret = 0;
struct search_query query = { .value = clock, .found = 0 };
- if (!trace || !clock) {
+ if (!trace || !bt_ctf_clock_is_valid(clock)) {
ret = -1;
goto end;
}
bt_ctf_stream_class_freeze(stream_class);
bt_ctf_trace_freeze(trace);
+ /* Notifiy listeners of the trace's schema modification. */
+ bt_ctf_stream_class_visit(stream_class,
+ bt_ctf_trace_element_modification, trace);
end:
if (ret) {
bt_object_set_parent(stream_class, NULL);
return ret;
}
+static
+int get_stream_class_count(void *element)
+{
+ return bt_ctf_trace_get_stream_class_count(
+ (struct bt_ctf_trace *) element);
+}
+
+static
+void *get_stream_class(void *element, int i)
+{
+ return bt_ctf_trace_get_stream_class(
+ (struct bt_ctf_trace *) element, i);
+}
+
+static
+int visit_stream_class(void *element, bt_ctf_ir_visitor visitor,void *data)
+{
+ return bt_ctf_stream_class_visit(element, visitor, data);
+}
+
+int bt_ctf_trace_visit(struct bt_ctf_trace *trace,
+ bt_ctf_ir_visitor visitor, void *data)
+{
+ int ret;
+ struct bt_ctf_ir_element element =
+ { .element = trace, .type = BT_CTF_IR_TYPE_TRACE };
+
+ if (!trace || !visitor) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = visitor_helper(&element, get_stream_class_count,
+ get_stream_class, visit_stream_class, visitor, data);
+end:
+ return ret;
+}
+
+static
+int invoke_listener(struct bt_ctf_ir_element *element, void *data)
+{
+ struct listener_wrapper *listener_wrapper = data;
+
+ listener_wrapper->listener(element, listener_wrapper->data);
+ return 0;
+}
+
+int bt_ctf_trace_add_listener(struct bt_ctf_trace *trace,
+ bt_ctf_listener_cb listener, void *listener_data)
+{
+ int ret = 0;
+ struct listener_wrapper *listener_wrapper =
+ g_new0(struct listener_wrapper, 1);
+
+ if (!trace || !listener || !listener_wrapper) {
+ ret = -1;
+ goto error;
+ }
+
+ listener_wrapper->listener = listener;
+ listener_wrapper->data = listener_data;
+
+ /* Visit the current schema. */
+ ret = bt_ctf_trace_visit(trace, invoke_listener, listener_wrapper);
+ if (ret) {
+ goto error;
+ }
+
+ /*
+ * Add listener to the array of callbacks which will be invoked on
+ * schema changes.
+ */
+ g_ptr_array_add(trace->listeners, listener_wrapper);
+ return ret;
+error:
+ g_free(listener_wrapper);
+ return ret;
+}
+
+BT_HIDDEN
+int bt_ctf_trace_element_modification(struct bt_ctf_ir_element *element,
+ void *trace_ptr)
+{
+ size_t i;
+ struct bt_ctf_trace *trace = trace_ptr;
+
+ assert(trace);
+ assert(element);
+
+ if (trace->listeners->len == 0) {
+ goto end;
+ }
+
+ for (i = 0; i < trace->listeners->len; i++) {
+ struct listener_wrapper *listener =
+ g_ptr_array_index(trace->listeners, i);
+
+ listener->listener(element, listener->data);
+ }
+end:
+ return 0;
+}
+
BT_HIDDEN
struct bt_ctf_field_type *get_field_type(enum field_type_alias alias)
{