contrib/sendmail-8.14/libsm/t-heap.c

   1 /*
   2  * Copyright (c) 2000-2001 Sendmail, Inc. and its suppliers.
   3  *      All rights reserved.
   4  *
   5  * By using this file, you agree to the terms and conditions set
   6  * forth in the LICENSE file which can be found at the top level of
   7  * the sendmail distribution.
   8  */
   9
  10 #include <sm/gen.h>
  11 SM_IDSTR(id, "@(#)$Id: t-heap.c,v 1.10 2001/09/11 04:04:49 gshapiro Exp $")
  12
  13 #include <sm/debug.h>
  14 #include <sm/heap.h>
  15 #include <sm/io.h>
  16 #include <sm/test.h>
  17 #include <sm/xtrap.h>
  18
  19 #if SM_HEAP_CHECK
  20 extern SM_DEBUG_T SmHeapCheck;
  21 # define HEAP_CHECK sm_debug_active(&SmHeapCheck, 1)
  22 #else /* SM_HEAP_CHECK */
  23 # define HEAP_CHECK 0
  24 #endif /* SM_HEAP_CHECK */
  25
  26 int
  27 main(argc, argv)
  28         int argc;
  29         char **argv;
  30 {
  31         void *p;
  32
  33         sm_test_begin(argc, argv, "test heap handling");
  34         if (argc > 1)
  35                 sm_debug_addsettings_x(argv[1]);
  36
  37         p = sm_malloc(10);
  38         SM_TEST(p != NULL);
  39         p = sm_realloc_x(p, 20);
  40         SM_TEST(p != NULL);
  41         p = sm_realloc(p, 30);
  42         SM_TEST(p != NULL);
  43         if (HEAP_CHECK)
  44         {
  45                 sm_dprintf("heap with 1 30-byte block allocated:\n");
  46                 sm_heap_report(smioout, 3);
  47         }
  48
  49         if (HEAP_CHECK)
  50         {
  51                 sm_free(p);
  52                 sm_dprintf("heap with 0 blocks allocated:\n");
  53                 sm_heap_report(smioout, 3);
  54                 sm_dprintf("xtrap count = %d\n", SmXtrapCount);
  55         }
  56
  57 #if DEBUG
  58         /* this will cause a core dump */
  59         sm_dprintf("about to free %p for the second time\n", p);
  60         sm_free(p);
  61 #endif /* DEBUG */
  62
  63         return sm_test_end();
  64 }