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/