SLEEP_LOCKAVAIL man page on IRIX

SLEEP_LOCKAVAIL man page on IRIX

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SLEEP_LOCKAVAIL(D3)					   SLEEP_LOCKAVAIL(D3)

NAME
     SLEEP_LOCKAVAIL - query whether a sleep lock is available

SYNOPSIS
     #include <sys/types.h>
     #include <sys/ksynch.h>
     #include <sys/ddi.h>
     boolean_t SLEEP_LOCKAVAIL(sleep_t *lockp);

   Arguments
     lockp     Pointer to the sleep lock to be queried.

DESCRIPTION
     SLEEP_LOCKAVAIL returns an indication of whether the sleep lock specified
     by lockp is currently available.

   Return Values
     SLEEP_LOCKAVAIL returns TRUE (a non-zero value) if the lock was available
     or FALSE (zero) if the lock was not available.

USAGE
     The state of the lock may change and the value returned may no longer be
     valid by the time the caller sees it.  The caller is expected to
     understand that this is ``stale data'' and is either using it as a
     heuristic or has arranged for the return value to be meaningful by other
     means.

   Level
     Base or Interrupt.

   Synchronization Constraints
     Does not sleep.

     Driver-defined basic locks, read/write locks, and sleep locks may be held
     across calls to this function.

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

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