ck_pflock(3) | Library Functions Manual | ck_pflock(3) |
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. |