CK_COHORT_TRYLOCK(3) BSD Library Functions Manual CK_COHORT_TRYLOCK(3)NAMECK_COHORT_TRYLOCK — try to acquire cohort lock
LIBRARY
Concurrency Kit (libck, -lck)
SYNOPSIS
#include <ck_cohort.h>
CK_COHORT_TRYLOCK(COHORT_NAME cohort_name, COHORT *cohort,
void *global_trylock_context, void *local_trylock_context,
void *lock_unlock_context);
DESCRIPTION
This call attempts to acquire both the local and global (if necessary)
locks from cohort. It can only be used with cohort types that were
defined using the CK_COHORT_TRYLOCK_PROTOTYPE(3) macro. The call will
not block and will return a bool that will evaluate to true iff the
cohort was successfully acquired. global_trylock_context will be passed
as the second argument to the function that was provided as the
global_trylock_method argument to CK_COHORT_TRYLOCK_PROTOTYPE if that
method is called, and local_trylock_context will be passed to the func‐
tion specified by local_trylock_method. If the global lock acquisition
fails, then the cohort will immediately release its local lock as well,
and local_unlock_context will be passed to the function specified by
local_unlock_method when this call is made.
SEE ALSOck_cohort(3), CK_COHORT_PROTOTYPE(3), CK_COHORT_TRYLOCK_PROTOTYPE(3),
CK_COHORT_INSTANCE(3), CK_COHORT_INITIALIZER(3), CK_COHORT_INIT(3),
CK_COHORT_LOCK(3), CK_COHORT_UNLOCK(3), CK_COHORT_LOCKED(3),
Additional information available at http://concurrencykit.org/
March 9, 2013.
