CK_COHORT_TRYLOCK_PRO... BSD Library Functions Manual CK_COHORT_TRYLOCK_PRO...NAMECK_COHORT_TRYLOCK_PROTOTYPE — define cohort type with specified lock
types
LIBRARY
Concurrency Kit (libck, -lck)
SYNOPSIS
#include <ck_cohort.h>
CK_COHORT_TRYLOCK_PROTOTYPE(COHORT_NAME cohort_name,
LOCK_FXN global_lock_method, LOCK_FXN global_unlock_method,
BOOL_LOCK_FXN global_locked_method,
BOOL_LOCK_FXN global_trylock_method, LOCK_FXN local_lock_method,
LOCK_FXN local_unlock_method, BOOL_LOCK_FXN local_locked_method,
BOOL_LOCK_FXN local_trylock_method);
DESCRIPTION
The ck_cohort.h header file does not define any cohort types. Instead,
the user must use the CK_COHORT_PROTOTYPE or CK_COHORT_TRYLOCK_PROTOTYPE
macros to define any types they want to use. They must use
CK_COHORT_TRYLOCK_PROTOTYPE if they want their cohort type to have sup‐
port for trylock operations. The CK_COHORT_TRYLOCK_PROTOTYPE macro takes
the following arguments:
cohort_name : An identifier used for this cohort type. This will have to
be passed to each of the other CK_COHORT macros.
global_lock_method : The method that should be called to acquire the
global lock
global_unlock_method : The method that should be called to relinquish the
global lock
global_locked_method : This method should return true iff the global lock
is acquired by a thread.
global_trylock_method : The method that should be called to try to
acquire the global lock. It should not block and return true iff the
lock was successfully acquired.
local_lock_method : The method that should be called to acquire the local
lock
local_unlock_method : The method that should be called to relinquish the
local lock
global_locked_method : This method should return true iff the global lock
is acquired by a thread.
local_trylock_method : The method that should be called to try to acquire
the local lock. It should not block and return true iff the lock was
successfully acquired.
Instances of the defined cohort type can be declared as:
CK_COHORT_INSTANCE(cohort_name) cohort;
SEE ALSOck_cohort(3), CK_COHORT_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), CK_COHORT_TRYLOCK(3),
Additional information available at http://concurrencykit.org/
March 9, 2013.
