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/