#include <babeltrace/ctf-ir/event-class-internal.h>
#include <babeltrace/ctf-ir/stream-class.h>
#include <babeltrace/ctf-ir/stream-class-internal.h>
+#include <babeltrace/ctf-ir/stream-internal.h>
#include <babeltrace/ctf-ir/packet.h>
#include <babeltrace/ctf-ir/packet-internal.h>
#include <babeltrace/ctf-ir/trace-internal.h>
* lifetime.
*/
event->event_class = bt_get(event_class);
+ event->clock_values = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, NULL, g_free);
event_header =
bt_ctf_field_create(validation_output.event_header_type);
if (!event_header) {
*/
bt_put(event->event_class);
}
+ g_hash_table_destroy(event->clock_values);
bt_put(event->event_header);
bt_put(event->stream_event_context);
bt_put(event->context_payload);
bt_ctf_field_freeze(event->fields_payload);
event->frozen = 1;
}
+
+static
+void insert_stream_clock_value_into_event_clock_values(gpointer key,
+ gpointer value,
+ gpointer data)
+{
+ struct bt_ctf_event *event = data;
+ uint64_t *clock_value;
+
+ assert(event);
+
+ /* Copy clock value because it belongs to the hash table */
+ clock_value = g_new0(uint64_t, 1);
+ *clock_value = *((uint64_t *) value);
+
+ /* Insert copy into event clock values */
+ g_hash_table_insert(event->clock_values, key, clock_value);
+}
+
+BT_HIDDEN
+int bt_ctf_event_register_stream_clock_values(struct bt_ctf_event *event)
+{
+ int ret = 0;
+ struct bt_ctf_stream *stream;
+
+ stream = bt_ctf_event_get_stream(event);
+ assert(stream);
+ g_hash_table_remove_all(event->clock_values);
+ g_hash_table_foreach(stream->clock_values,
+ insert_stream_clock_value_into_event_clock_values, event);
+ BT_PUT(stream);
+
+ return ret;
+}
+
+uint64_t bt_ctf_event_get_clock_value(struct bt_ctf_event *event,
+ struct bt_ctf_clock *clock)
+{
+ uint64_t ret = -1ULL;
+ uint64_t *clock_value;
+
+ if (!event || !clock) {
+ goto end;
+ }
+
+ clock_value = g_hash_table_lookup(event->clock_values, clock);
+ if (!clock_value) {
+ goto end;
+ }
+
+ ret = *clock_value;
+
+end:
+ return ret;
+}
if (ret) {
goto error;
}
+
+ stream->clock_values = g_hash_table_new_full(g_direct_hash,
+ g_direct_equal, NULL, g_free);
}
/* Add this stream to the trace's streams */
if (stream->name) {
g_string_free(stream->name, TRUE);
}
+
+ if (stream->clock_values) {
+ g_hash_table_destroy(stream->clock_values);
+ }
+
bt_put(stream->packet_header);
bt_put(stream->packet_context);
g_free(stream);
end:
return name;
}
+
+BT_HIDDEN
+void bt_ctf_stream_update_clock_value(struct bt_ctf_stream *stream,
+ struct bt_ctf_field *value_field)
+{
+ struct bt_ctf_field_type *value_type = NULL;
+ struct bt_ctf_clock *clock = NULL;
+ uint64_t requested_new_value;
+ uint64_t requested_new_value_mask;
+ uint64_t *cur_value;
+ uint64_t cur_value_masked;
+ int requested_new_value_size;
+ int ret;
+
+ assert(stream);
+ assert(clock);
+ assert(value_field);
+ value_type = bt_ctf_field_get_type(value_field);
+ assert(value_type);
+ clock = bt_ctf_field_type_integer_get_mapped_clock(value_type);
+ assert(clock);
+ requested_new_value_size =
+ bt_ctf_field_type_integer_get_size(value_type);
+ assert(requested_new_value_size > 0);
+ ret = bt_ctf_field_unsigned_integer_get_value(value_field,
+ &requested_new_value);
+ assert(!ret);
+ cur_value = g_hash_table_lookup(stream->clock_values, clock);
+
+ if (!cur_value) {
+ /*
+ * Updating the value of a clock which is not registered
+ * yet, so register it with the new value as its initial
+ * value.
+ */
+ uint64_t *requested_new_value_ptr = g_new0(uint64_t, 1);
+
+ *requested_new_value_ptr = requested_new_value;
+ g_hash_table_insert(stream->clock_values, clock,
+ requested_new_value_ptr);
+ goto end;
+ }
+
+ /*
+ * Special case for a 64-bit new value, which is the limit
+ * of a clock value as of this version: overwrite the
+ * current value directly.
+ */
+ if (requested_new_value_size == 64) {
+ *cur_value = requested_new_value;
+ goto end;
+ }
+
+ requested_new_value_mask = (1ULL << requested_new_value_size) - 1;
+ cur_value_masked = *cur_value & requested_new_value_mask;
+
+ if (requested_new_value < cur_value_masked) {
+ /*
+ * It looks like a wrap happened on the number of bits
+ * of the requested new value. Assume that the clock
+ * value wrapped only one time.
+ */
+ *cur_value += requested_new_value_mask + 1;
+ }
+
+ /* Clear the low bits of the current clock value */
+ *cur_value &= ~requested_new_value_mask;
+
+ /* Set the low bits of the current clock value */
+ *cur_value |= requested_new_value;
+
+end:
+ bt_put(clock);
+ bt_put(value_type);
+}
struct bt_ctf_field *stream_event_context;
struct bt_ctf_field *context_payload;
struct bt_ctf_field *fields_payload;
+ GHashTable *clock_values; /* Maps clock addresses to (uint64_t *) */
int frozen;
};
+BT_HIDDEN
+int bt_ctf_event_register_stream_clock_values(struct bt_ctf_event *event);
+
BT_HIDDEN
int bt_ctf_event_validate(struct bt_ctf_event *event);
extern int bt_ctf_event_set_packet(struct bt_ctf_event *event,
struct bt_ctf_packet *packet);
+extern uint64_t bt_ctf_event_get_clock_value(struct bt_ctf_event *event,
+ struct bt_ctf_clock *clock);
+
#ifdef __cplusplus
}
#endif
GString *name;
struct bt_ctf_field *packet_header;
struct bt_ctf_field *packet_context;
+ GHashTable *clock_values; /* Maps clock addresses to (uint64_t *) */
};
BT_HIDDEN
int bt_ctf_stream_set_fd(struct bt_ctf_stream *stream, int fd);
+BT_HIDDEN
+void bt_ctf_stream_update_clock_value(struct bt_ctf_stream *stream,
+ struct bt_ctf_field *value_field);
+
#endif /* BABELTRACE_CTF_WRITER_STREAM_INTERNAL_H */