mir/criu
2
0
Fork 0
mirror of https://github.com/checkpoint-restore/criu synced 2025-08-31 14:25:49 +00:00
Code Issues Releases Wiki Activity

lock: add futex_inc_and_wake and futex_wait_while_lt (v2)

Browse Source 
v2: fix descriptions

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Andrey Vagin
2013-01-11 14:50:44 +04:00
committed by Pavel Emelyanov
parent 0fc129a121
commit 07a8647466
1 changed files with 11 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
include/lock.h
View File

@@ -70,6 +70,13 @@ static inline void futex_dec_and_wake(futex_t *f)
BUG_ON(sys_futex(&f->raw.counter, FUTEX_WAKE, INT_MAX, NULL, NULL, 0) < 0);
}
/* Increment futex @f value and wake up all waiters */
static inline void futex_inc_and_wake(futex_t *f)
{
atomic_inc(&f->raw);
BUG_ON(sys_futex(&f->raw.counter, FUTEX_WAKE, INT_MAX, NULL, NULL, 0) < 0);
}
/* Plain increment futex @f value */
static inline void futex_inc(futex_t *f) { atomic_inc(&f->raw); }
@@ -84,6 +91,10 @@ static inline void futex_wait_until(futex_t *f, u32 v)
static inline void futex_wait_while_gt(futex_t *f, u32 v)
{ futex_wait_if_cond(f, v, <=); }
/* Wait while futex @f value is less than @v */
static inline void futex_wait_while_lt(futex_t *f, u32 v)
{ futex_wait_if_cond(f, v, >=); }
/* Wait while futex @f value is @v */
static inline void futex_wait_while(futex_t *f, u32 v)
{