*
* 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/babeltrace.h>
struct bt_ctf_iter *iter;
int ret;
+ if (!ctx)
+ return NULL;
+
iter = g_new0(struct bt_ctf_iter, 1);
ret = bt_iter_init(&iter->parent, ctx, begin_pos, end_pos);
if (ret) {
g_free(iter);
return NULL;
}
- iter->callbacks = g_array_new(0, 1, sizeof(struct bt_stream_callbacks));
+ iter->callbacks = g_array_new(FALSE, TRUE,
+ sizeof(struct bt_stream_callbacks));
iter->recalculate_dep_graph = 0;
iter->main_callbacks.callback = NULL;
iter->dep_gc = g_ptr_array_new();
struct bt_callback_chain *bt_chain;
int i, j;
+ assert(iter);
+
/* free all events callbacks */
if (iter->main_callbacks.callback)
g_array_free(iter->main_callbacks.callback, TRUE);
}
g_array_free(bt_stream_cb->per_id_callbacks, TRUE);
}
+ g_array_free(iter->callbacks, TRUE);
+ g_ptr_array_free(iter->dep_gc, TRUE);
bt_iter_fini(&iter->parent);
g_free(iter);
struct bt_iter *bt_ctf_get_iter(struct bt_ctf_iter *iter)
{
+ if (!iter)
+ return NULL;
+
return &iter->parent;
}
-struct bt_ctf_event *bt_ctf_iter_read_event(struct bt_ctf_iter *iter)
+struct bt_ctf_event *bt_ctf_iter_read_event_flags(struct bt_ctf_iter *iter,
+ int *flags)
{
struct ctf_file_stream *file_stream;
- struct bt_ctf_event *ret = &iter->current_ctf_event;
+ struct bt_ctf_event *ret;
+ struct ctf_stream_definition *stream;
+ struct packet_index *packet_index;
- file_stream = heap_maximum(iter->parent.stream_heap);
+ /*
+ * We do not want to fail for any other reason than end of
+ * trace, hence the assert.
+ */
+ assert(iter);
+
+ if (flags)
+ *flags = 0;
+
+ ret = &iter->current_ctf_event;
+ file_stream = bt_heap_maximum(iter->parent.stream_heap);
if (!file_stream) {
/* end of file for all streams */
goto stop;
}
- ret->stream = &file_stream->parent;
- ret->event = g_ptr_array_index(ret->stream->events_by_id,
- ret->stream->event_id);
- if (ret->stream->stream_id > iter->callbacks->len)
+ /*
+ * If the packet is empty (contains only headers or is of size 0), the
+ * caller has to know that we can't read the current event and we need
+ * to do a bt_iter_next.
+ */
+ if (file_stream->pos.data_offset == file_stream->pos.content_size
+ || file_stream->pos.content_size == 0) {
+ /* More events may come. */
+ ret = NULL;
+ if (flags)
+ *flags |= BT_ITER_FLAG_RETRY;
goto end;
+ }
- process_callbacks(iter, ret->stream);
+ stream = &file_stream->parent;
+ if (iter->parent.end_pos &&
+ iter->parent.end_pos->type == BT_SEEK_TIME &&
+ stream->real_timestamp > iter->parent.end_pos->u.seek_time) {
+ goto stop;
+ }
+ ret->parent = g_ptr_array_index(stream->events_by_id,
+ stream->event_id);
+
+ if (!file_stream->pos.packet_index)
+ packet_index = NULL;
+ else
+ packet_index = &g_array_index(file_stream->pos.packet_index,
+ struct packet_index, file_stream->pos.cur_index);
+ iter->events_lost = 0;
+ if (packet_index && packet_index->events_discarded >
+ file_stream->pos.last_events_discarded) {
+ if (flags)
+ *flags |= BT_ITER_FLAG_LOST_EVENTS;
+ iter->events_lost += packet_index->events_discarded -
+ file_stream->pos.last_events_discarded;
+ file_stream->pos.last_events_discarded =
+ packet_index->events_discarded;
+ }
+
+ if (ret->parent->stream->stream_id > iter->callbacks->len)
+ goto end;
+
+ process_callbacks(iter, ret->parent->stream);
end:
return ret;
stop:
return NULL;
}
+
+struct bt_ctf_event *bt_ctf_iter_read_event(struct bt_ctf_iter *iter)
+{
+ return bt_ctf_iter_read_event_flags(iter, NULL);
+}
+
+uint64_t bt_ctf_get_lost_events_count(struct bt_ctf_iter *iter)
+{
+ if (!iter)
+ return -1ULL;
+
+ return iter->events_lost;
+}