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-rw-r--r--apps/examples/mm/mm_main.c300
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diff --git a/apps/examples/mm/mm_main.c b/apps/examples/mm/mm_main.c
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-/****************************************************************************
- * examples/mm/mm_main.c
- *
- * Copyright (C) 2011 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-/****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
-
-#define NTEST_ALLOCS 32
-
-/* #define STOP_ON_ERRORS do{}while(0) */
-#define STOP_ON_ERRORS exit(1)
-
-/* All other definitions derive from these two */
-
-#define MM_MIN_SHIFT 4 /* 16 bytes */
-#define MM_MIN_CHUNK (1 << MM_MIN_SHIFT)
-#define MM_GRAN_MASK (MM_MIN_CHUNK-1)
-#define MM_ALIGN_UP(a) (((a) + MM_GRAN_MASK) & ~MM_GRAN_MASK)
-#define MM_ALIGN_DOWN(a) ((a) & ~MM_GRAN_MASK)
-
-#ifdef CONFIG_SMALL_MEMORY
-# define SIZEOF_MM_ALLOCNODE 4
-#else
-# define SIZEOF_MM_ALLOCNODE 8
-#endif
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-/* Test allocations */
-
-static const int alloc_sizes[NTEST_ALLOCS] =
-{
- 1024, 12, 962, 5692, 10254, 111, 9932, 601,
- 222, 2746, 3, 124321, 68, 776, 6750, 852,
- 4732, 28, 901, 480, 5011, 1536, 2011, 81647,
- 646, 1646, 69179, 194, 2590, 7, 969, 70
-};
-
-static const int realloc_sizes[NTEST_ALLOCS] =
-{
- 18, 3088, 963, 123, 511, 11666, 3723, 42,
- 9374, 1990, 1412, 6, 592, 4088, 11, 5040,
- 8663, 91255, 28, 4346, 9172, 168, 229, 4734,
- 59139, 221, 7830, 30421, 1666, 4, 812, 416
-};
-
-static const int random1[NTEST_ALLOCS] =
-{
- 20, 11, 3, 31, 9, 29, 7, 17,
- 21, 2, 26, 18, 14, 25, 0, 10,
- 27, 19, 22, 28, 8, 30, 12, 15,
- 4, 1, 24, 6, 16, 13, 5, 23
-};
-
-static const int random2[NTEST_ALLOCS] =
-{
- 2, 19, 12, 23, 30, 11, 27, 4,
- 20, 7, 0, 16, 28, 15, 5, 24,
- 10, 17, 25, 31, 8, 29, 3, 26,
- 9, 18, 22, 13, 1, 21, 14, 6
-};
-
-static const int random3[NTEST_ALLOCS] =
-{
- 8, 17, 3, 18, 26, 23, 30, 11,
- 12, 22, 4, 20, 25, 10, 27, 1,
- 29, 14, 19, 21, 0, 31, 7, 24,
- 9, 15, 2, 28, 16, 6, 13, 5
-};
-
-static const int alignment[NTEST_ALLOCS/2] =
-{
- 128, 2048, 131072, 8192, 32, 32768, 16384 , 262144,
- 512, 4096, 65536, 8, 64, 1024, 16, 4
-};
-
-static void *allocs[NTEST_ALLOCS];
-static struct mallinfo alloc_info;
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-static void mm_showmallinfo(void)
-{
- alloc_info = mallinfo();
- printf(" mallinfo:\n");
- printf(" Total space allocated from system = %ld\n",
- alloc_info.arena);
- printf(" Number of non-inuse chunks = %ld\n",
- alloc_info.ordblks);
- printf(" Largest non-inuse chunk = %ld\n",
- alloc_info.mxordblk);
- printf(" Total allocated space = %ld\n",
- alloc_info.uordblks);
- printf(" Total non-inuse space = %ld\n",
- alloc_info.fordblks);
-}
-
-static void do_mallocs(void **mem, const int *size, const int *seq, int n)
-{
- int i;
- int j;
-
- for (i = 0; i < n; i++)
- {
- j = seq[i];
- if (!mem[j])
- {
- printf("(%d)Allocating %d bytes\n", i, size[j]);
- mem[j] = malloc(size[j]);
- printf("(%d)Memory allocated at %p\n", i, mem[j]);
- if (mem[j] == NULL)
- {
- int allocsize = MM_ALIGN_UP(size[j] + SIZEOF_MM_ALLOCNODE);
- fprintf(stderr, "(%d)malloc failed for allocsize=%d\n", i, allocsize);
- if (allocsize > alloc_info.mxordblk)
- {
- fprintf(stderr, " Normal, largest free block is only %ld\n", alloc_info.mxordblk);
- }
- else
- {
- fprintf(stderr, " ERROR largest free block is %ld\n", alloc_info.mxordblk);
- exit(1);
- }
- }
- else
- {
- memset(mem[j], 0xAA, size[j]);
- }
-
- mm_showmallinfo();
- }
- }
-}
-
-static void do_reallocs(void **mem, const int *oldsize, const int *newsize, const int *seq, int n)
-{
- int i;
- int j;
-
- for (i = 0; i < n; i++)
- {
- j = seq[i];
- printf("(%d)Re-allocating at %p from %d to %d bytes\n",
- i, mem[j], oldsize[j], newsize[j]);
- mem[j] = realloc(mem[j], newsize[j]);
- printf("(%d)Memory re-allocated at %p\n", i, mem[j]);
- if (mem[j] == NULL)
- {
- int allocsize = MM_ALIGN_UP(newsize[j] + SIZEOF_MM_ALLOCNODE);
- fprintf(stderr, "(%d)realloc failed for allocsize=%d\n", i, allocsize);
- if (allocsize > alloc_info.mxordblk)
- {
- fprintf(stderr, " Normal, largest free block is only %ld\n", alloc_info.mxordblk);
- }
- else
- {
- fprintf(stderr, " ERROR largest free block is %ld\n", alloc_info.mxordblk);
- exit(1);
- }
- }
- else
- {
- memset(mem[j], 0x55, newsize[j]);
- }
-
- mm_showmallinfo();
- }
-}
-
-static void do_memaligns(void **mem, const int *size, const int *align, const int *seq, int n)
-{
- int i;
- int j;
-
- for (i = 0; i < n; i++)
- {
- j = seq[i];
- printf("(%d)Allocating %d bytes aligned to 0x%08x\n",
- i, size[j], align[i]);
- mem[j] = memalign(align[i], size[j]);
- printf("(%d)Memory allocated at %p\n", i, mem[j]);
- if (mem[j] == NULL)
- {
- int allocsize = MM_ALIGN_UP(size[j] + SIZEOF_MM_ALLOCNODE) + 2*align[i];
- fprintf(stderr, "(%d)memalign failed for allocsize=%d\n", i, allocsize);
- if (allocsize > alloc_info.mxordblk)
- {
- fprintf(stderr, " Normal, largest free block is only %ld\n", alloc_info.mxordblk);
- }
- else
- {
- fprintf(stderr, " ERROR largest free block is %ld\n", alloc_info.mxordblk);
- exit(1);
- }
- }
- else
- {
- memset(mem[j], 0x33, size[j]);
- }
-
- mm_showmallinfo();
- }
-}
-
-static void do_frees(void **mem, const int *size, const int *seq, int n)
-{
- int i;
- int j;
-
- for (i = 0; i < n; i++)
- {
- j = seq[i];
- printf("(%d)Releasing memory at %p (size=%d bytes)\n",
- i, mem[j], size[j]);
- free(mem[j]);
- mem[j] = NULL;
-
- mm_showmallinfo();
- }
-}
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: mm_main
- ****************************************************************************/
-
-int mm_main(int argc, char *argv[])
-{
- mm_showmallinfo();
-
- /* Allocate some memory */
-
- do_mallocs(allocs, alloc_sizes, random1, NTEST_ALLOCS);
-
- /* Re-allocate the memory */
-
- do_reallocs(allocs, alloc_sizes, realloc_sizes, random2, NTEST_ALLOCS);
-
- /* Release the memory */
-
- do_frees(allocs, realloc_sizes, random3, NTEST_ALLOCS);
-
- /* Allocate aligned memory */
-
- do_memaligns(allocs, alloc_sizes, alignment, random2, NTEST_ALLOCS/2);
- do_memaligns(allocs, alloc_sizes, alignment, &random2[NTEST_ALLOCS/2], NTEST_ALLOCS/2);
-
- /* Release aligned memory */
-
- do_frees(allocs, alloc_sizes, random1, NTEST_ALLOCS);
-
- printf("TEST COMPLETE\n");
- return 0;
-}
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