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red-common: Add a comment for GLIST_FOREACH_GENERIC

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Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Acked-by: Victor Toso <victortoso@redhat.com>
This commit is contained in:
Frediano Ziglio 2019-06-01 00:45:33 +01:00
parent 4f5c342eea
commit a0497f0407
1 changed files with 4 additions and 0 deletions
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4
server/red-common.h
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@ -79,6 +79,10 @@ typedef struct GListIter {
GList *next;
} GListIter;
/* Iterate through a GList. Note that the iteration is "safe" meaning that the
* current item can be removed while the list is scanned. This is required as
* the code inside the loop in some cases can remove the element we are
* processing */
#define GLIST_FOREACH_GENERIC(_list, _iter, _type, _data, _dir) \
for (GListIter _iter = { .link = _list }; \
(_data = (_type *) (_iter.link ? _iter.link->data : NULL), \