forked from Imagelibrary/rtems
01557b0c6e
Use the heap handler statistics instead. Add heap walk option to MALLOC shell command. close #1367
76 lines
1.5 KiB
C
76 lines
1.5 KiB
C
/**
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* @file
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*
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* @brief RTEMS Malloc Family Implementation
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* @ingroup libcsupport
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*/
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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.org/license/LICENSE.
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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 <stdlib.h>
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#include <errno.h>
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#include "malloc_p.h"
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void *malloc(
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size_t size
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)
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{
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void *return_this;
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/*
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* If some free's have been deferred, then do them now.
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*/
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malloc_deferred_frees_process();
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/*
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* Validate the parameters
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*/
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if ( !size )
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return (void *) 0;
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/*
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* Do not attempt to allocate memory if not in correct system state.
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*/
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if ( !malloc_is_system_state_OK() )
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return NULL;
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/*
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* Try to give a segment in the current heap if there is not
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* enough space then try to grow the heap.
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* If this fails then return a NULL pointer.
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*/
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return_this = _Protected_heap_Allocate( RTEMS_Malloc_Heap, size );
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if ( !return_this ) {
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return_this = (*rtems_malloc_extend_handler)( RTEMS_Malloc_Heap, size );
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if ( !return_this ) {
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errno = ENOMEM;
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return (void *) 0;
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}
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}
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/*
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* If the user wants us to dirty the allocated memory, then do it.
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*/
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if ( rtems_malloc_dirty_helper )
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(*rtems_malloc_dirty_helper)( return_this, size );
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return return_this;
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}
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#endif
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