Ejemplos de rwlock_read_unlock en C++ (Cpp)

Ejemplo n.º 1

Archivo: block.c Proyecto: Numetric/nessDB

int block_get_off_bynid(struct block *b,
                        uint64_t nid,
                        struct block_pair **bpair)
{
	uint32_t i;
	int rval = NESS_ERR;

	rwlock_read_lock(&b->rwlock, &b->mtx);
	for (i = 0; i < b->pairs_used; i++) {
		if (b->pairs[i].nid == nid) {
			if (b->pairs[i].used) {
				*bpair = &b->pairs[i];
				rval = NESS_OK;
				break;
			}
		}
	}
	rwlock_read_unlock(&b->rwlock);

	return rval;
}

Ejemplo n.º 2

Archivo: latency.c Proyecto: msparks/ck

int
main(void)
{
        uint64_t s_b, e_b, i;
        ck_bytelock_t bytelock = CK_BYTELOCK_INITIALIZER;
        rwlock_t naive;

        for (i = 0; i < STEPS; i++) {
                ck_bytelock_write_lock(&bytelock, 1);
                ck_bytelock_write_unlock(&bytelock);
        }

        s_b = rdtsc();
        for (i = 0; i < STEPS; i++) {
                ck_bytelock_write_lock(&bytelock, 1);
                ck_bytelock_write_unlock(&bytelock);
        }
        e_b = rdtsc();
        printf("WRITE: bytelock %15" PRIu64 "\n", (e_b - s_b) / STEPS);

        rwlock_init(&naive);
        for (i = 0; i < STEPS; i++) {
                rwlock_write_lock(&naive);
                rwlock_write_unlock(&naive);
        }

        s_b = rdtsc();
        for (i = 0; i < STEPS; i++) {
                rwlock_write_lock(&naive);
                rwlock_write_unlock(&naive);
        }
        e_b = rdtsc();
        printf("WRITE: naive    %15" PRIu64 "\n", (e_b - s_b) / STEPS);

        for (i = 0; i < STEPS; i++) {
                ck_bytelock_read_lock(&bytelock, 1);
                ck_bytelock_read_unlock(&bytelock, 1);
        }
        s_b = rdtsc();
        for (i = 0; i < STEPS; i++) {
                ck_bytelock_read_lock(&bytelock, 1);
                ck_bytelock_read_unlock(&bytelock, 1);
        }
        e_b = rdtsc();
        printf("READ:  bytelock %15" PRIu64 "\n", (e_b - s_b) / STEPS);

        for (i = 0; i < STEPS; i++) {
                rwlock_read_lock(&naive);
                rwlock_read_unlock(&naive);
        }

        s_b = rdtsc();
        for (i = 0; i < STEPS; i++) {
                rwlock_read_lock(&naive);
                rwlock_read_unlock(&naive);
        }
        e_b = rdtsc();
        printf("READ:  naive    %15" PRIu64 "\n", (e_b - s_b) / STEPS);

        return (0);
}