refs.c

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/* -*- C -*- */
/*
 * Copyright (c) 2011-2020 Seagate Technology LLC and/or its Affiliates
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * For any questions about this software or licensing,
 * please email opensource@seagate.com or cortx-questions@seagate.com.
 *
 */


#include "ut/ut.h"
#include "lib/memory.h"
#include "lib/refs.h"

struct test_struct {
        struct m0_ref   ref;
};

static int free_done;

void test_destructor(struct m0_ref *r)
{
        struct test_struct *t;

        t = container_of(r, struct test_struct, ref);

        m0_free(t);
        free_done = 1;
}

void test_refs(void)
{
        struct test_struct *t;

        t = m0_alloc(sizeof(struct test_struct));
        M0_UT_ASSERT(t != NULL);

        free_done = 0;
        m0_ref_init(&t->ref, 1, test_destructor);

        M0_UT_ASSERT(m0_ref_read(&t->ref) == 1);
        m0_ref_get(&t->ref);
        M0_UT_ASSERT(m0_ref_read(&t->ref) == 2);
        m0_ref_put(&t->ref);
        M0_UT_ASSERT(m0_ref_read(&t->ref) == 1);
        m0_ref_put(&t->ref);

        M0_UT_ASSERT(free_done);
}