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31 lines
1.1 KiB
C
31 lines
1.1 KiB
C
/* THIS SAMPLE CODE IS PROVIDED AS IS AND IS SUBJECT TO ALTERATIONS. FUJITSU */
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/* MICROELECTRONICS ACCEPTS NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR */
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/* ELIGIBILITY FOR ANY PURPOSES. */
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/* (C) Fujitsu Microelectronics Europe GmbH */
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/*---------------------------------------------------------------------------
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* __STD_LIB_sbrk.C
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* - Used by heap_3.c for memory accocation and deletion.
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*
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* /*---------------------------------------------------------------------------*/
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#include "FreeRTOSConfig.h"
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#include <stdlib.h>
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static long brk_siz = 0;
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typedef int _heep_t;
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#define ROUNDUP( s ) ( ( ( s ) + sizeof( _heep_t ) - 1 ) & ~( sizeof( _heep_t ) - 1 ) )
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static _heep_t _heep[ ROUNDUP( configTOTAL_HEAP_SIZE ) / sizeof( _heep_t ) ];
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#define _heep_size ROUNDUP( configTOTAL_HEAP_SIZE )
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extern char * sbrk( int size )
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{
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if( ( brk_siz + size > _heep_size ) || ( brk_siz + size < 0 ) )
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{
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return( ( char * ) -1 );
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}
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brk_siz += size;
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return( ( char * ) _heep + brk_siz - size );
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}
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