malloc.c

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00001 /*
00002  * Copyright (C) 2001-2003 by egnite Software GmbH. All rights reserved.
00003  *
00004  * Redistribution and use in source and binary forms, with or without
00005  * modification, are permitted provided that the following conditions
00006  * are met:
00007  *
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the copyright holders nor the names of
00014  *    contributors may be used to endorse or promote products derived
00015  *    from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
00018  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00019  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00020  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
00021  * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00022  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00023  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
00024  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
00025  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00026  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
00027  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00028  * SUCH DAMAGE.
00029  *
00030  * For additional information see http://www.ethernut.de/
00031  *
00032  */
00033 
00034 /*
00035  * $Log: malloc.c,v $
00036  * Revision 1.8  2008/07/01 23:15:28  thiagocorrea
00037  * Resubmit realloc code using NutHeapRealloc.
00038  *
00039  * Revision 1.7  2008/06/15 17:01:50  haraldkipp
00040  * Rolled back to version 1.5.
00041  *
00042  * Revision 1.5  2006/06/18 16:32:18  haraldkipp
00043  * Set errno on allocation failure.
00044  *
00045  * Revision 1.4  2005/08/02 17:46:47  haraldkipp
00046  * Major API documentation update.
00047  *
00048  * Revision 1.3  2004/09/08 10:24:26  haraldkipp
00049  * RAMSTART is too platform dependant
00050  *
00051  * Revision 1.2  2003/08/05 20:01:55  haraldkipp
00052  * Typing errors corrected
00053  *
00054  * Revision 1.1.1.1  2003/05/09 14:40:30  haraldkipp
00055  * Initial using 3.2.1
00056  *
00057  * Revision 1.1  2003/02/04 17:49:07  harald
00058  * *** empty log message ***
00059  *
00060  */
00061 
00062 #include <sys/heap.h>
00063 
00064 #include <stdlib.h>
00065 #include <errno.h>
00066 
00071 
00085 void *malloc(size_t len)
00086 {
00087     void *p;
00088 
00089     if ((p = NutHeapAlloc(len)) == NULL) {
00090         errno = ENOMEM;
00091     }
00092     return p;
00093 }
00094 
00105 void free(void *p)
00106 {
00107     NutHeapFree(p);
00108 }
00109 
00125 void *realloc(void* ptr, size_t len)
00126 {
00127     void *p;
00128 
00129     if ((p = NutHeapRealloc(ptr, len)) == NULL) {
00130         errno = ENOMEM;
00131     }
00132     return p;
00133 }
00134 

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