tests/test-memory.c

/* 
 * This file is part of Quagga.
 *
 * Quagga is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * Quagga is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Quagga; see the file COPYING.  If not, write to the Free
 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.  
 */

#include <zebra.h>
#include <memory.h>

/* Memory torture tests
 *
 * Tests below are generic but comments are focused on interaction with
 * Paul's proposed memory 'quick' cache, which may never be included in
 * CVS
 */

struct thread_master *master;

#if 0 /* set to 1 to use system alloc directly */
#undef XMALLOC
#undef XCALLOC
#undef XREALLOC
#undef XFREE
#define XMALLOC(T,S) malloc((S))
#define XCALLOC(T,S) calloc(1, (S))
#define XREALLOC(T,P,S) realloc((P),(S))
#define XFREE(T,P) free((P))
#endif

#define TIMES 10

int
main(int argc, char **argv)
{
  void *a[10];
  int i;

  printf ("malloc x, malloc x, free, malloc x, free free\n\n");
  /* simple case, test cache */
  for (i = 0; i < TIMES; i++)
    {
      a[0] = XMALLOC (MTYPE_VTY, 1024);
      memset (a[0], 1, 1024);
      a[1] = XMALLOC (MTYPE_VTY, 1024);
      memset (a[1], 1, 1024);
      XFREE(MTYPE_VTY, a[0]); /* should go to cache */
      a[0] = XMALLOC (MTYPE_VTY, 1024); /* should be satisfied from cache */
      XFREE(MTYPE_VTY, a[0]);
      XFREE(MTYPE_VTY, a[1]);
    }
  
  printf ("malloc x, malloc y, free x, malloc y, free free\n\n");
  /* cache should go invalid, valid, invalid, etc.. */
  for (i = 0; i < TIMES; i++)
    {
      a[0] = XMALLOC (MTYPE_VTY, 512);
      memset (a[0], 1, 512);
      a[1] = XMALLOC (MTYPE_VTY, 1024); /* invalidate cache */
      memset (a[1], 1, 1024);
      XFREE(MTYPE_VTY, a[0]);
      a[0] = XMALLOC (MTYPE_VTY, 1024);
      XFREE(MTYPE_VTY, a[0]);
      XFREE(MTYPE_VTY, a[1]);
      /* cache should become valid again on next request */
    }

  printf ("calloc\n\n");
  /* test calloc */
  for (i = 0; i < TIMES; i++)
    {
      a[0] = XCALLOC (MTYPE_VTY, 1024);
      memset (a[0], 1, 1024);
      a[1] = XCALLOC (MTYPE_VTY, 512); /* invalidate cache */
      memset (a[1], 1, 512);
      XFREE(MTYPE_VTY, a[1]);
      XFREE(MTYPE_VTY, a[0]);
      /* alloc == 0, cache can become valid again on next request */
    }
  
  printf ("calloc and realloc\n\n");
  /* check calloc + realloc */
  for (i = 0; i < TIMES; i++)
    {
      printf ("calloc a0 1024\n");
      a[0] = XCALLOC (MTYPE_VTY, 1024);
      memset (a[0], 1, 1024/2);
      
      printf ("calloc 1 1024\n");
      a[1] = XCALLOC (MTYPE_VTY, 1024);
      memset (a[1], 1, 1024/2);
      
      printf ("realloc 0 1024\n");
      a[3] = XREALLOC (MTYPE_VTY, a[0], 2048); /* invalidate cache */
      if (a[3] != NULL)
        a[0] = a[3];
      memset (a[0], 1, 1024);
      
      printf ("calloc 2 512\n");
      a[2] = XCALLOC (MTYPE_VTY, 512);
      memset (a[2], 1, 512);
      
      printf ("free 1 0 2\n");
      XFREE(MTYPE_VTY, a[1]);
      XFREE(MTYPE_VTY, a[0]);
      XFREE(MTYPE_VTY, a[2]);
      /* alloc == 0, cache valid next request */
    }
  return 0;
}