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  1. /*
  2.  * Copyright (C) 2006 Ondrej Palkovsky
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. #include <test.h>
  30. #include <mm/slab.h>
  31. #include <print.h>
  32. #include <proc/thread.h>
  33. #include <arch.h>
  34. #include <panic.h>
  35. #include <mm/frame.h>
  36.  
  37. #define ITEM_SIZE 256
  38.  
  39. /** Fill memory with 2 caches, when allocation fails,
  40.  *  free one of the caches. We should have everything in magazines,
  41.  *  now allocation should clean magazines and allow for full allocation.
  42.  */
  43. static void totalmemtest(void)
  44. {
  45.     slab_cache_t *cache1;
  46.     slab_cache_t *cache2;
  47.     int i;
  48.  
  49.     void *data1, *data2;
  50.     void *olddata1=NULL, *olddata2=NULL;
  51.    
  52.     cache1 = slab_cache_create("cache1_tst", ITEM_SIZE, 0, NULL, NULL, 0);
  53.     cache2 = slab_cache_create("cache2_tst", ITEM_SIZE, 0, NULL, NULL, 0);
  54.  
  55.     printf("Allocating...");
  56.     /* Use atomic alloc, so that we find end of memory */
  57.     do {
  58.         data1 = slab_alloc(cache1, FRAME_ATOMIC);
  59.         data2 = slab_alloc(cache2, FRAME_ATOMIC);
  60.         if (!data1 || !data2) {
  61.             if (data1)
  62.                 slab_free(cache1,data1);
  63.             if (data2)
  64.                 slab_free(cache2,data2);
  65.             break;
  66.         }
  67.  
  68.         *((void **)data1) = olddata1;
  69.         *((void **)data2) = olddata2;
  70.         olddata1 = data1;
  71.         olddata2 = data2;
  72.     }while(1);
  73.     printf("done.\n");
  74.     slab_print_list();
  75.     /* We do not have memory - now deallocate cache2 */
  76.     printf("Deallocating cache2...");
  77.     while (olddata2) {
  78.         data2 = *((void **)olddata2);
  79.         slab_free(cache2, olddata2);
  80.         olddata2 = data2;
  81.     }
  82.     printf("done.\n");
  83.  
  84.     slab_print_list();
  85.     printf("Allocating to cache1...\n");
  86.     for (i=0; i<30; i++) {
  87.         data1 = slab_alloc(cache1, FRAME_ATOMIC);
  88.         if (!data1) {
  89.             panic("Incorrect memory size - use another test.");
  90.         }
  91.         *((void **)data1) = olddata1;
  92.         olddata1 = data1;
  93.     }
  94.     slab_print_list();
  95.     while (1) {
  96.         data1 = slab_alloc(cache1, FRAME_ATOMIC);
  97.         if (!data1) {
  98.             break;
  99.         }
  100.         *((void **)data1) = olddata1;
  101.         olddata1 = data1;
  102.     }
  103.     slab_print_list();
  104.    
  105. }
  106.  
  107. void test(void)
  108. {
  109.     totalmemtest();
  110. }
  111.