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