*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
*/
#include <babeltrace/iterator.h>
+#ifdef __cplusplus
+extern "C" {
+#endif
+
struct bt_ctf_iter;
struct bt_ctf_event;
* By default, if begin_pos is NULL, a BT_SEEK_CUR is performed at
* creation. By default, if end_pos is NULL, a BT_SEEK_END (end of
* trace) is the EOF criterion.
+ *
+ * Return a pointer to the newly allocated iterator.
+ *
+ * Only one iterator can be created against a context. If more than one
+ * iterator is being created for the same context, the second creation
+ * will return NULL. The previous iterator must be destroyed before
+ * creation of the new iterator for this function to succeed.
*/
struct bt_ctf_iter *bt_ctf_iter_create(struct bt_context *ctx,
- struct bt_iter_pos *begin_pos,
- struct bt_iter_pos *end_pos);
+ const struct bt_iter_pos *begin_pos,
+ const struct bt_iter_pos *end_pos);
+
+ /*
+ * bt_ctf_iter_create_intersect - Allocate a CTF trace collection
+ * iterator corresponding to the timerange when all streams are active
+ * simultaneously.
+ *
+ * On success, return a pointer to the newly allocated iterator. The
+ * out parameters inter_begin_pos and inter_end_pos are also set to
+ * correspond to the beginning and end of the intersection,
+ * respectively.
+ *
+ * On failure, return NULL.
+ */
+struct bt_ctf_iter *bt_ctf_iter_create_intersect(struct bt_context *ctx,
+ struct bt_iter_pos **inter_begin_pos,
+ struct bt_iter_pos **inter_end_pos);
/*
* bt_ctf_get_iter - get iterator from ctf iterator.
/*
* bt_ctf_iter_read_event: Read the iterator's current event data.
*
- * @iter: trace collection iterator (input)
+ * @iter: trace collection iterator (input). Should NOT be NULL.
*
* Return current event on success, NULL on end of trace.
*/
struct bt_ctf_event *bt_ctf_iter_read_event(struct bt_ctf_iter *iter);
+/*
+ * bt_ctf_iter_read_event_flags: Read the iterator's current event data.
+ *
+ * @iter: trace collection iterator (input). Should NOT be NULL.
+ * @flags: pointer passed by the user, in which the trace reader populates
+ * flags on special condition (BT_ITER_FLAG_*).
+ *
+ * Return current event on success, NULL on end of trace.
+ */
+struct bt_ctf_event *bt_ctf_iter_read_event_flags(struct bt_ctf_iter *iter,
+ int *flags);
+
+/*
+ * bt_ctf_get_lost_events_count: returns the number of events discarded
+ * immediately prior to the last event read
+ *
+ * @iter: trace collection iterator (input). Should NOT be NULL.
+ *
+ * Return the number of lost events or -1ULL on error.
+ */
+uint64_t bt_ctf_get_lost_events_count(struct bt_ctf_iter *iter);
+
+#ifdef __cplusplus
+}
+#endif
+
#endif /* _BABELTRACE_CTF_ITERATOR_H */