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| author | Ulrich Drepper <drepper@redhat.com> | 2008-03-05 05:50:39 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2008-03-05 05:50:39 +0000 |
| commit | a4bb445a63b483818ed5a7c20d45581d63dad326 (patch) | |
| tree | 9345b8724caa44e4065c8a8859bdd04ec461341d /misc/sys/queue.h | |
| parent | 15600683c773fd39d50f3af610d5adafcd75dc00 (diff) | |
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[BZ #5779]
* misc/sys/queue.h: Add STAILQ_CONCAT and TAILQ_CONCAT definitions.
Patch by Roy Marples <roy@marples.name>.
Diffstat (limited to 'misc/sys/queue.h')
| -rw-r--r-- | misc/sys/queue.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/misc/sys/queue.h b/misc/sys/queue.h index b0e6b38c19..daf4553d33 100644 --- a/misc/sys/queue.h +++ b/misc/sys/queue.h @@ -271,6 +271,14 @@ struct { \ (var); \ (var) = ((var)->field.stqe_next)) +#define STAILQ_CONCAT(head1, head2) do { \ + if (!STAILQ_EMPTY((head2))) { \ + *(head1)->stqh_last = (head2)->stqh_first; \ + (head1)->stqh_last = (head2)->stqh_last; \ + STAILQ_INIT((head2)); \ + } \ +} while (/*CONSTCOND*/0) + /* * Singly-linked Tail queue access methods. */ @@ -434,6 +442,15 @@ struct { \ (var); \ (var) = (*(((struct headname *)((var)->field.tqe_prev))->tqh_last))) +#define TAILQ_CONCAT(head1, head2, field) do { \ + if (!TAILQ_EMPTY(head2)) { \ + *(head1)->tqh_last = (head2)->tqh_first; \ + (head2)->tqh_first->field.tqe_prev = (head1)->tqh_last; \ + (head1)->tqh_last = (head2)->tqh_last; \ + TAILQ_INIT((head2)); \ + } \ +} while (/*CONSTCOND*/0) + /* * Tail queue access methods. */ |