diff options
| author | Tobias Weingartner <weingart@cvs.openbsd.org> | 2009-08-13 13:24:56 +0000 |
|---|---|---|
| committer | Tobias Weingartner <weingart@cvs.openbsd.org> | 2009-08-13 13:24:56 +0000 |
| commit | 12e07bde626971f0b6038b2e0779443ce161e178 (patch) | |
| tree | d88677388bcf55b9698dc17194f0de869a2f4c60 /sys/arch/hppa64 | |
| parent | 29809d2f1e8c02ea2b0ede0ef698eeadae085716 (diff) | |
A new(er) mtx_enter_try().
Ok oga@, "the time is now" deraadt@.
Diffstat (limited to 'sys/arch/hppa64')
| -rw-r--r-- | sys/arch/hppa64/hppa64/mutex.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/sys/arch/hppa64/hppa64/mutex.c b/sys/arch/hppa64/hppa64/mutex.c index 0752b964669..8f9d5ebf9a4 100644 --- a/sys/arch/hppa64/hppa64/mutex.c +++ b/sys/arch/hppa64/hppa64/mutex.c @@ -1,4 +1,4 @@ -/* $OpenBSD: mutex.c,v 1.3 2009/04/27 21:48:56 kettenis Exp $ */ +/* $OpenBSD: mutex.c,v 1.4 2009/08/13 13:24:55 weingart Exp $ */ /* * Copyright (c) 2004 Artur Grabowski <art@openbsd.org> @@ -54,6 +54,17 @@ mtx_enter(struct mutex *mtx) mtx->mtx_lock = 1; } +int +mtx_enter_try(struct mutex *mtx) +{ + if (mtx->mtx_wantipl != IPL_NONE) + mtx->mtx_oldipl = splraise(mtx->mtx_wantipl); + MUTEX_ASSERT_UNLOCKED(mtx); + mtx->mtx_lock = 1; + + return 1; +} + void mtx_leave(struct mutex *mtx) { |