nvml-sys 0.0.6

A low-level FFI wrapper around the Persistent Memory Development Kit, PMDK (formerly NVML) and its libraries, including libpmem, libpmemobj and others. Currently tracks master after version 1.3.1.
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/*
 * Copyright 2016-2017, Intel Corporation
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *
 *     * Neither the name of the copyright holder nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * obj_tx_mt.c -- multi-threaded test for pmemobj_tx_*
 *
 * It checks that objects are removed from transactions before on abort/commit
 * phase.
 */
#include "unittest.h"

#define THREADS 8
#define LOOPS 8

static PMEMobjpool *pop;
static PMEMoid tab;
static os_mutex_t mtx;

static void *
tx_alloc_free(void *arg)
{
	volatile int locked;
	for (int i = 0; i < LOOPS; ++i) {
		locked = 0;
		TX_BEGIN(pop) {
			os_mutex_lock(&mtx);
			locked = 1;
			tab = pmemobj_tx_alloc(128, 1);
		} TX_ONCOMMIT {
			if (locked)
				os_mutex_unlock(&mtx);
		} TX_ONABORT {
			if (locked)
				os_mutex_unlock(&mtx);
		} TX_END
		locked = 0;
		TX_BEGIN(pop) {
			os_mutex_lock(&mtx);
			locked = 1;
			pmemobj_tx_free(tab);
			tab = OID_NULL;
		} TX_ONCOMMIT {
			if (locked)
				os_mutex_unlock(&mtx);
		} TX_ONABORT {
			if (locked)
				os_mutex_unlock(&mtx);
		} TX_END
	}
	return NULL;
}

static void *
tx_snap(void *arg)
{
	volatile int locked;
	for (int i = 0; i < LOOPS; ++i) {
		locked = 0;
		TX_BEGIN(pop) {
			os_mutex_lock(&mtx);
			locked = 1;
			if (!OID_IS_NULL(tab))
				pmemobj_tx_add_range(tab, 0, 8);
		} TX_ONCOMMIT {
			if (locked)
				os_mutex_unlock(&mtx);
		} TX_ONABORT {
			if (locked)
				os_mutex_unlock(&mtx);
		} TX_END
		locked = 0;
	}

	return NULL;
}

int
main(int argc, char *argv[])
{
	START(argc, argv, "obj_tx_mt");

	os_mutex_init(&mtx);

	if (argc != 2)
		UT_FATAL("usage: %s [file]", argv[0]);

	if ((pop = pmemobj_create(argv[1], "mt", PMEMOBJ_MIN_POOL,
			S_IWUSR | S_IRUSR)) == NULL)
		UT_FATAL("!pmemobj_create");

	int i = 0;
	os_thread_t *threads = MALLOC(THREADS * sizeof(threads[0]));

	for (int j = 0; j < THREADS / 2; ++j) {
		PTHREAD_CREATE(&threads[i++], NULL, tx_alloc_free, NULL);
		PTHREAD_CREATE(&threads[i++], NULL, tx_snap, NULL);
	}

	while (i > 0)
		PTHREAD_JOIN(&threads[--i], NULL);

	pmemobj_close(pop);

	os_mutex_destroy(&mtx);

	FREE(threads);

	DONE(NULL);
}