SVR5

SLEEP_LOCKOWNED(D3)

SLEEP_LOCKOWNED -- query whether a sleep lock is held by the caller

Synopsis

   #include <sys/types.h>
   #include <sys/ksynch.h>
   #include <sys/ddi.h>
   
   bool_t SLEEP_LOCKOWNED(sleep_t *lockp);

Description

SLEEP_LOCKOWNED returns an indication of whether the sleep lock specified by lockp is currently held by the calling context.

Arguments

lockp: Pointer to the sleep lock to be queried.

Return values

SLEEP_LOCKOWNED returns TRUE (a non-zero value) if the lock is currently held by the calling context or FALSE (zero) if the lock is not currently held by the calling context.

Usage

SLEEP_LOCKOWNED is intended for use only within ASSERT expressions [see ASSERT(D3)] and other code that is conditionally compiled under the DEBUG compilation option. The SLEEP_LOCKOWNED function is only defined under the DEBUG compilation option, and therefore calls to SLEEP_LOCKOWNED will not compile when DEBUG is not defined.

Context and synchronization

Non-blockable, user or blockable context.

Hardware applicability

All

Version applicability

ddi: 5, 5mp, 6, 6mp, 7, 7mp, 7.1, 7.1mp, 8, 8mp

References

SLEEP_ALLOC(D3), SLEEP_DEALLOC(D3), SLEEP_LOCK(D3), SLEEP_LOCK_SIG(D3), SLEEP_LOCKAVAIL(D3), SLEEP_TRYLOCK(D3), SLEEP_UNLOCK(D3)

``Sleep locks'' in HDK Technical Reference