RW_TRYRDLOCK man page on IRIX

RW_TRYRDLOCK man page on IRIX

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RW_TRYRDLOCK(D3)					      RW_TRYRDLOCK(D3)

NAME
     RW_TRYRDLOCK - try to acquire a read/write lock in read mode

SYNOPSIS
     #include <sys/ksynch.h>
     #include <sys/ddi.h>
     boolean_t RW_TRYRDLOCK(rwlock_t *lockp);

   Arguments
     lockp     Pointer to the read/write lock to be acquired.

DESCRIPTION
     If the lock specified by lockp is immediately available (can be acquired
     in read mode without sleeping) the RW_TRYRDLOCK function acquires the
     lock.  If the lock is not immediately available, RW_TRYRDLOCK returns
     without acquiring the lock.

   Return Values
     RW_TRYRDLOCK returns TRUE (a non-zero value) if the lock is successfully
     acquired or FALSE (zero) if the lock is not acquired.

USAGE
   Level
     Base or Interrupt.

   Synchronization Constraints
     Does not sleep.

     Driver-defined basic locks, and sleeping locks may be held across calls
     to this function.

REFERENCES
     RW_ALLOC(D3), RW_INIT(D3), RW_DEALLOC(D3), RW_DESTROY(D3), RW_RDLOCK(D3),
     RW_WRLOCK(D3), RW_TRYWRLOCK(D3), RW_UNLOCK(D3)

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