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t-heap.c

/*
 * 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 1.10 2001/09/11 04:04:49 gshapiro 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();
}

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