NAME

       ck_pflock_init, ck_pflock_write_lock, ck_pflock_write_unlock, ck_pflock_read_lock, ck_pflock_read_unlock,
       — centralized phase-fair reader-writer locks

LIBRARY

       Concurrency Kit (libck, -lck)

SYNOPSIS

       #include <ck_pflock.h>

       ck_pflock_t lock = CK_PFLOCK_INITIALIZER;

       void
       ck_pflock_init(ck_pflock_t *lock);

       void
       ck_pflock_write_lock(ck_pflock_t *lock);

       void
       ck_pflock_write_unlock(ck_pflock_t *lock);

       void
       ck_pflock_read_lock(ck_pflock_t *lock);

       void
       ck_pflock_read_unlock(ck_pflock_t *lock);

DESCRIPTION

       This  is  a  centralized  phase-fair  reader-writer lock. It requires little space overhead and has a low
       latency fast path.

EXAMPLE

             #include <ck_pflock.h>

             static ck_pflock_t lock = CK_TFLOCK_INITIALIZER;

             static void
             reader(void)
             {

                     for (;;) {
                             ck_pflock_read_lock(&lock);
                             /* Read-side critical section. */
                             ck_pflock_read_unlock(&lock);
                     }

                     return;
             }

             static void
             writer(void)
             {

                     for (;;) {
                             ck_pflock_write_lock(&lock);
                             /* Write-side critical section. */
                             ck_pflock_write_unlock(&lock);
                     }

                     return;
             }

SEE ALSO

       ck_brlock(3), ck_rwlock(3), ck_tflock(3), ck_swlock(3)

       Additional information available at http://concurrencykit.org/

                                                 April 22, 2014.                                    ck_pflock(3)