source: trunk/third/sendmail/libsm/t-heap.c @ 19204

/*
 * Copyright (c) 2000-2001 Sendmail, Inc. and its suppliers.
 *      All rights reserved.
 *
 * By using this file, you agree to the terms and conditions set
 * forth in the LICENSE file which can be found at the top level of
 * the sendmail distribution.
 */

#include <sm/gen.h>
SM_IDSTR(id, "@(#)$Id: t-heap.c,v 1.1.1.1 2003-04-08 15:06:05 zacheiss Exp $")

#include <sm/debug.h>
#include <sm/heap.h>
#include <sm/io.h>
#include <sm/test.h>
#include <sm/xtrap.h>

#if SM_HEAP_CHECK
extern SM_DEBUG_T SmHeapCheck;
# define HEAP_CHECK sm_debug_active(&SmHeapCheck, 1)
#else /* SM_HEAP_CHECK */
# define HEAP_CHECK 0
#endif /* SM_HEAP_CHECK */

int
main(argc, argv)
        int argc;
        char **argv;
{
        void *p;

        sm_test_begin(argc, argv, "test heap handling");
        if (argc > 1)
                sm_debug_addsettings_x(argv[1]);

        p = sm_malloc(10);
        SM_TEST(p != NULL);
        p = sm_realloc_x(p, 20);
        SM_TEST(p != NULL);
        p = sm_realloc(p, 30);
        SM_TEST(p != NULL);
        if (HEAP_CHECK)
        {
                sm_dprintf("heap with 1 30-byte block allocated:\n");
                sm_heap_report(smioout, 3);
        }

        if (HEAP_CHECK)
        {
                sm_free(p);
                sm_dprintf("heap with 0 blocks allocated:\n");
                sm_heap_report(smioout, 3);
                sm_dprintf("xtrap count = %d\n", SmXtrapCount);
        }

#if DEBUG
        /* this will cause a core dump */
        sm_dprintf("about to free %p for the second time\n", p);
        sm_free(p);
#endif /* DEBUG */

        return sm_test_end();
}