Live: let read API detect inactive streams, allow streams without fd

[babeltrace.git] / include / babeltrace / iterator.h

diff --git a/include/babeltrace/iterator.h b/include/babeltrace/iterator.h
index e658eeec0b5cdc8789e684ca630b4c04d9396d67..5c3939c32b4261eaae4ed3676a20fbb205586c73 100644 (file)
--- a/include/babeltrace/iterator.h
+++ b/include/babeltrace/iterator.h
@@ -15,11 +15,29 @@
  *
  * 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/format.h>
 #include <babeltrace/context.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Flags for the iterator read_event */
+enum {
+       BT_ITER_FLAG_LOST_EVENTS        = (1 << 0),
+       BT_ITER_FLAG_RETRY              = (1 << 1),
+};
+
 /* Forward declarations */
 struct bt_iter;
 struct bt_saved_pos;
@@ -48,15 +66,16 @@ struct bt_saved_pos;
  * only use BT_SEEK_LAST to get the timestamp of the last event(s) in
  * the trace.
  */
+enum bt_iter_pos_type {
+       BT_SEEK_TIME,           /* uses u.seek_time */
+       BT_SEEK_RESTORE,        /* uses u.restore */
+       BT_SEEK_CUR,
+       BT_SEEK_BEGIN,
+       BT_SEEK_LAST,
+};
+
 struct bt_iter_pos {
-       enum {
-               BT_SEEK_TIME,           /* uses u.seek_time */
-               BT_SEEK_RESTORE,        /* uses u.restore */
-               BT_SEEK_CUR,
-               BT_SEEK_BEGIN,
-               BT_SEEK_END,
-               BT_SEEK_LAST,
-       } type;
+       enum bt_iter_pos_type type;
        union {
                uint64_t seek_time;
                struct bt_saved_pos *restore;
@@ -107,4 +126,8 @@ int bt_iter_set_pos(struct bt_iter *iter, const struct bt_iter_pos *pos);
 struct bt_iter_pos *bt_iter_create_time_pos(struct bt_iter *iter,
                uint64_t timestamp);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _BABELTRACE_ITERATOR_H */