diff mbox series

[V2,2/4] qapi: QAPI_LIST_LENGTH

Message ID 1675795727-235010-3-git-send-email-steven.sistare@oracle.com (mailing list archive)
State New, archived
Headers show
Series string list functions | expand

Commit Message

Steven Sistare Feb. 7, 2023, 6:48 p.m. UTC 
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 include/qapi/util.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)
diff mbox series

Patch

diff --git a/include/qapi/util.h b/include/qapi/util.h
index 7d88b09..75dddca 100644
--- a/include/qapi/util.h
+++ b/include/qapi/util.h
@@ -65,4 +65,17 @@  struct strList *strList_from_string(const char *in, char delim);
     (tail) = &(*(tail))->next; \
 } while (0)
 
+/*
+ * For any GenericList @list, return its length.
+ */
+#define QAPI_LIST_LENGTH(list) \
+    ({ \
+        int len = 0; \
+        typeof(list) elem; \
+        for (elem = list; elem != NULL; elem = elem->next) { \
+            len++; \
+        } \
+        len; \
+    })
+
 #endif