From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 13 Apr 2021 15:20:58 +0000 (+0200)
Subject: hashmap: add helper to test if iterator is still at beginning
X-Git-Tag: v249-rc1~155^2~17
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=641d3761d45c53000195ed4c6fff7d0d08cdc912;p=thirdparty%2Fsystemd.git

hashmap: add helper to test if iterator is still at beginning
---

diff --git a/src/basic/hashmap.h b/src/basic/hashmap.h
index c855f39b1d3..f7ade2e774f 100644
--- a/src/basic/hashmap.h
+++ b/src/basic/hashmap.h
@@ -51,6 +51,7 @@ typedef struct {
 
 #define _IDX_ITERATOR_FIRST (UINT_MAX - 1)
 #define ITERATOR_FIRST ((Iterator) { .idx = _IDX_ITERATOR_FIRST, .next_key = NULL })
+#define ITERATOR_IS_FIRST(i) ((i).idx == _IDX_ITERATOR_FIRST)
 
 /* Macros for type checking */
 #define PTR_COMPATIBLE_WITH_HASHMAP_BASE(h) \