diff mbox series

[v7,1/3] qapi: New QAPI_LIST_LENGTH()

Message ID 20240227153321.467343-2-armbru@redhat.com
State New
Headers show
Series string list functions | expand

Commit Message

Markus Armbruster Feb. 27, 2024, 3:33 p.m. UTC 
From: Steve Sistare <steven.sistare@oracle.com>

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(+)

Comments

Philippe Mathieu-Daudé Feb. 27, 2024, 4:18 p.m. UTC | #1 
On 27/2/24 16:33, Markus Armbruster wrote:
> From: Steve Sistare <steven.sistare@oracle.com>
> 
> 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(+)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
diff mbox series

Patch

diff --git a/include/qapi/util.h b/include/qapi/util.h
index 81a2b13a33..20dfea8a54 100644
--- a/include/qapi/util.h
+++ b/include/qapi/util.h
@@ -56,4 +56,17 @@  int parse_qapi_name(const char *name, bool complete);
     (tail) = &(*(tail))->next; \
 } while (0)
 
+/*
+ * For any GenericList @list, return its length.
+ */
+#define QAPI_LIST_LENGTH(list)                                      \
+    ({                                                              \
+        size_t _len = 0;                                            \
+        typeof(list) _tail;                                         \
+        for (_tail = list; _tail != NULL; _tail = _tail->next) {    \
+            _len++;                                                 \
+        }                                                           \
+        _len;                                                       \
+    })
+
 #endif