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qapi: New QAPI_LIST_LENGTH()

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Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20240227153321.467343-2-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
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Steve Sistare 2024-02-27 16:33:19 +01:00 committed by Markus Armbruster
parent 8a62ef7bd9
commit 745736ae0c
1 changed files with 13 additions and 0 deletions
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13
include/qapi/util.h
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@ -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