forked from Imagelibrary/rtems
cfcc4e202d
* libcsupport/Makefile.am: Add malloc_sbrk_helpers.c. * libcsupport/include/rtems/malloc.h, libcsupport/src/malloc.c, libcsupport/src/malloc_initialize.c, libcsupport/src/malloc_p.h, libcsupport/src/malloc_statistics_helpers.c: Make sbrk() support pluggable and optional. This eliminates the need for heap extend and sbrk in the minimum footprint which is ~2.5K on the SPARC. * sapi/include/confdefs.h: Add the following configuration points: + CONFIGURE_MALLOC_STATISTICS + CONFIGURE_MALLOC_BSP_SUPPORTS_SBRK * libcsupport/src/malloc_sbrk_helpers.c: New file.
77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
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/*
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* _calloc_r Implementation
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*
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* COPYRIGHT (c) 1989-2007.
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* On-Line Applications Research Corporation (OAR).
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rtems.com/license/LICENSE.
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*
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* $Id$
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef RTEMS_NEWLIB
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#include "malloc_p.h"
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#include <sys/reent.h>
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#include <stdlib.h>
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void rtems_malloc_statistics_initialize()
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{
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/*
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* Zero all the statistics
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*/
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(void) memset(&rtems_malloc_statistics, 0, sizeof(rtems_malloc_statistics));
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}
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void rtems_malloc_statistics_at_malloc(
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void *pointer
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)
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{
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size_t actual_size = 0;
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uint32_t current_depth;
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rtems_malloc_statistics_t *s = &rtems_malloc_statistics;
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if ( !pointer )
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return;
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_Protected_heap_Get_block_size(&RTEMS_Malloc_Heap, pointer, &actual_size);
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MSBUMP(lifetime_allocated, actual_size);
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current_depth = s->lifetime_allocated - s->lifetime_freed;
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if (current_depth > s->max_depth)
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s->max_depth = current_depth;
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}
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/*
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* If the pointer is not in the heap, then we won't be able to get its
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* size and thus we skip updating the statistics.
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*/
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void rtems_malloc_statistics_at_free(
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void *pointer
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)
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{
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size_t size;
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if (_Protected_heap_Get_block_size(&RTEMS_Malloc_Heap, pointer, &size) ) {
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MSBUMP(lifetime_freed, size);
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}
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}
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rtems_malloc_statistics_functions_t rtems_malloc_statistics_helpers_table = {
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rtems_malloc_statistics_initialize,
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rtems_malloc_statistics_at_malloc,
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rtems_malloc_statistics_at_free,
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};
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#endif
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