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| author | Richard Braun <rbraun@sceen.net> | 2017-07-21 00:54:31 +0200 |
|---|---|---|
| committer | Richard Braun <rbraun@sceen.net> | 2017-07-21 00:54:54 +0200 |
| commit | 4c0dcbeb7d363918c9a4a75faf3f1912f580f9c1 (patch) | |
| tree | 6fdb4a1b80d4aa51bbafda6f930f9f222adc4368 /kern/sleepq.h | |
| parent | adcae3076edee5ed24cb06f4328f88cfa5e8998a (diff) | |
| parent | 5c2cf8fff7a1d6dc6b88615df5433ddccbbcf51f (diff) | |
Merge branch 'adaptive_spinning'
Diffstat (limited to 'kern/sleepq.h')
| -rw-r--r-- | kern/sleepq.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kern/sleepq.h b/kern/sleepq.h index 4d37182a..651b3e7c 100644 --- a/kern/sleepq.h +++ b/kern/sleepq.h @@ -56,9 +56,15 @@ void sleepq_destroy(struct sleepq *sleepq); * * The condition argument must be true if the synchronization object * is a condition variable. + * + * Note that, in the case of the non-blocking variant, the call may also + * return NULL if internal state shared by unrelated synchronization + * objects is locked. */ struct sleepq * sleepq_acquire(const void *sync_obj, bool condition, unsigned long *flags); +struct sleepq * sleepq_tryacquire(const void *sync_obj, bool condition, + unsigned long *flags); void sleepq_release(struct sleepq *sleepq, unsigned long flags); /* |