/* Copyright (c) 1995, 2002, 2009 Xilinx, Inc. All rights reserved.
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/* Copyright (c) 1995, 2002, 2009 Xilinx, Inc. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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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 are
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modification, are permitted provided that the following conditions are
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met:
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met:
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1. Redistributions source code must retain the above copyright notice,
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1. Redistributions source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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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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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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documentation and/or other materials provided with the distribution.
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3. Neither the name of Xilinx nor the names of its contributors may be
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3. Neither the name of Xilinx nor the names of its contributors may be
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used to endorse or promote products derived from this software without
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used to endorse or promote products derived from this software without
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specific prior written permission.
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS "AS
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IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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*/
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#ifdef DEBUG
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#ifdef DEBUG
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#include <stdlib.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdio.h>
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#else
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#else
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typedef unsigned int size_t;
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typedef unsigned int size_t;
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#define NULL 0
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#define NULL 0
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#endif
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#endif
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#define sbrk xil_sbrk
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#define sbrk xil_sbrk
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/* The only extern functions I need if not printing. */
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/* The only extern functions I need if not printing. */
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extern void* sbrk(size_t incr);
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extern void* sbrk(size_t incr);
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extern void *memcpy(void *s1, const void *s2, size_t n);
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extern void *memcpy(void *s1, const void *s2, size_t n);
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extern void *memset(void *s, int c, size_t n);
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extern void *memset(void *s, int c, size_t n);
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typedef unsigned char BOOLEAN;
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typedef unsigned char BOOLEAN;
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const BOOLEAN FALSE=0;
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const BOOLEAN FALSE=0;
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const BOOLEAN TRUE =1;
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const BOOLEAN TRUE =1;
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#define MIN(a,b) (((a) < (b)) ? (a) : (b))
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#define MIN(a,b) (((a) < (b)) ? (a) : (b))
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#define MAX(a,b) (((a) > (b)) ? (a) : (b))
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#define MAX(a,b) (((a) > (b)) ? (a) : (b))
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#define M_DBG_NORMAL 0
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#define M_DBG_NORMAL 0
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#define M_DBG_PARTIAL 1
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#define M_DBG_PARTIAL 1
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#define M_DBG_FULL 2
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#define M_DBG_FULL 2
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/* debugging breakpoint aids */
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/* debugging breakpoint aids */
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static char xil_mem_null_free[] = "xil_mem_null_free";
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static char xil_mem_null_free[] = "xil_mem_null_free";
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static char xil_mem_chkcnt [] = "xil_mem_chkcnt";
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static char xil_mem_chkcnt [] = "xil_mem_chkcnt";
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/* Flag values describing the state of a memory block.
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/* Flag values describing the state of a memory block.
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/* Indicator for allocated blk */
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/* Indicator for allocated blk */
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#define M_ALLOCEDFLAG 0x5a
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#define M_ALLOCEDFLAG 0x5a
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/* End-of-block if debug level */
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/* End-of-block if debug level */
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#define M_ALLOCED 0xc99cc99c
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#define M_ALLOCED 0xc99cc99c
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/* Free block indicator. */
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/* Free block indicator. */
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#define M_FREEFLAG 0xa5
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#define M_FREEFLAG 0xa5
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/* End-of-block if debug level */
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/* End-of-block if debug level */
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#define M_FREE 0x9cc99cc9
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#define M_FREE 0x9cc99cc9
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/* Zero length block. */
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/* Zero length block. */
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#define M_ZEROFLAG 0xaa
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#define M_ZEROFLAG 0xaa
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/* Header of a memory block. */
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/* Header of a memory block. */
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typedef unsigned char DATA_T;
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typedef unsigned char DATA_T;
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typedef DATA_T * DATA_P;
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typedef DATA_T * DATA_P;
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struct M_HEADER
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struct M_HEADER
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{
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{
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unsigned dbglev:2; /* Debug level this was created with. */
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unsigned dbglev:2; /* Debug level this was created with. */
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unsigned size:22; /* Size of block / 8. 32 Meg max. */
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unsigned size:22; /* Size of block / 8. 32 Meg max. */
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unsigned flag:8; /* Indicates whether allocated or freed. */
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unsigned flag:8; /* Indicates whether allocated or freed. */
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};
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};
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typedef struct M_HEADER* M_HEADERP;
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typedef struct M_HEADER* M_HEADERP;
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BOOLEAN isalloced(M_HEADERP this)
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BOOLEAN isalloced(M_HEADERP this)
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{
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{
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return this->flag == M_ALLOCEDFLAG;
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return this->flag == M_ALLOCEDFLAG;
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}
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}
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BOOLEAN isfree(M_HEADERP this)
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BOOLEAN isfree(M_HEADERP this)
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{
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{
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return this->flag == M_FREEFLAG;
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return this->flag == M_FREEFLAG;
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}
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}
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BOOLEAN iszero(M_HEADERP this)
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BOOLEAN iszero(M_HEADERP this)
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{
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{
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return this->flag == M_ZEROFLAG;
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return this->flag == M_ZEROFLAG;
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}
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}
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void setalloced(M_HEADERP this) { this->flag = M_ALLOCEDFLAG; }
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void setalloced(M_HEADERP this) { this->flag = M_ALLOCEDFLAG; }
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void setfree(M_HEADERP this) { this->flag = M_FREEFLAG; }
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void setfree(M_HEADERP this) { this->flag = M_FREEFLAG; }
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void setzero(M_HEADERP this) { this->flag = M_ZEROFLAG; }
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void setzero(M_HEADERP this) { this->flag = M_ZEROFLAG; }
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int getdbglev(M_HEADERP this) { return this->dbglev; }
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int getdbglev(M_HEADERP this) { return this->dbglev; }
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void setdbglev(M_HEADERP this, int d) { this->dbglev = d; }
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void setdbglev(M_HEADERP this, int d) { this->dbglev = d; }
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size_t getsize(M_HEADERP this) { return this->size << 3; } /* Alignment is 8. */
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size_t getsize(M_HEADERP this) { return this->size << 3; } /* Alignment is 8. */
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void setsize(M_HEADERP this, size_t s){ this->size = s >> 3; }
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void setsize(M_HEADERP this, size_t s){ this->size = s >> 3; }
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DATA_T * getend(M_HEADERP this) { return (((DATA_T *)this)+getsize(this)); }
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DATA_T * getend(M_HEADERP this) { return (((DATA_T *)this)+getsize(this)); }
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/* Next pointer is after data in block. */
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/* Next pointer is after data in block. */
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M_HEADERP getnext(M_HEADERP this) { return *(((M_HEADERP*)getend(this)) - 1); }
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M_HEADERP getnext(M_HEADERP this) { return *(((M_HEADERP*)getend(this)) - 1); }
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void setnext(M_HEADERP this, M_HEADERP n) { *(((M_HEADERP*)getend(this)) - 1) = n; }
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void setnext(M_HEADERP this, M_HEADERP n) { *(((M_HEADERP*)getend(this)) - 1) = n; }
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/* Routines used to set a flag at end of block if debuglevel != normal. */
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/* Routines used to set a flag at end of block if debuglevel != normal. */
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/* Sentinel is right BEFORE the next pointer. */
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/* Sentinel is right BEFORE the next pointer. */
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unsigned long* getsentinel(M_HEADERP this);
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unsigned long* getsentinel(M_HEADERP this);
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void setsentinel(M_HEADERP this, unsigned long lflag);
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void setsentinel(M_HEADERP this, unsigned long lflag);
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BOOLEAN testsentinel(M_HEADERP this, unsigned long lflag);
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BOOLEAN testsentinel(M_HEADERP this, unsigned long lflag);
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/* Routines to handle data. Depend on debug level. */
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/* Routines to handle data. Depend on debug level. */
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DATA_T * getdata(M_HEADERP this) { return (((DATA_T*)this)+sizeof(*this)); }
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DATA_T * getdata(M_HEADERP this) { return (((DATA_T*)this)+sizeof(*this)); }
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size_t getdatasize(M_HEADERP this);
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size_t getdatasize(M_HEADERP this);
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/* Fill data with a pattern. */
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/* Fill data with a pattern. */
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void setdata(M_HEADERP this, int f);
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void setdata(M_HEADERP this, int f);
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/* Debug routines */
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/* Debug routines */
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BOOLEAN checkalloc(M_HEADERP this); /* Is this a valid allocated memory pointer? */
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BOOLEAN checkalloc(M_HEADERP this); /* Is this a valid allocated memory pointer? */
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BOOLEAN checkfree(M_HEADERP this); /* Is this a valid freelist entry? */
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BOOLEAN checkfree(M_HEADERP this); /* Is this a valid freelist entry? */
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/* Get length of data. */
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/* Get length of data. */
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size_t
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size_t
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getdatasize(M_HEADERP this)
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getdatasize(M_HEADERP this)
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{
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{
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/* By default, size is size of block - size of header. */
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/* By default, size is size of block - size of header. */
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int tmp_size = getsize(this) - sizeof(struct M_HEADER);
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int tmp_size = getsize(this) - sizeof(struct M_HEADER);
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if (this->dbglev != M_DBG_NORMAL)
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if (this->dbglev != M_DBG_NORMAL)
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{
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{
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/* Subtract size of sentinel, and next pointer. */
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/* Subtract size of sentinel, and next pointer. */
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tmp_size -= sizeof(long) + sizeof(M_HEADERP);
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tmp_size -= sizeof(long) + sizeof(M_HEADERP);
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/* If only eight bytes, no room for sentinel. */
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/* If only eight bytes, no room for sentinel. */
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if (tmp_size < 0)
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if (tmp_size < 0)
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tmp_size = 0;
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tmp_size = 0;
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}
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}
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else
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else
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{
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{
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/* Free block always has a next pointer. Otherwise not. */
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/* Free block always has a next pointer. Otherwise not. */
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if (isfree(this))
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if (isfree(this))
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tmp_size -= sizeof(M_HEADERP);
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tmp_size -= sizeof(M_HEADERP);
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}
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}
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return tmp_size;
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return tmp_size;
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}
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}
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/* Set the data buffer to value f. */
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/* Set the data buffer to value f. */
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void
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void
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setdata(M_HEADERP this, int f)
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setdata(M_HEADERP this, int f)
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{
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{
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memset(getdata(this), f, getdatasize(this));
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memset(getdata(this), f, getdatasize(this));
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}
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}
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/* At the end of the block, there may be a longword with
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/* At the end of the block, there may be a longword with
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special meaning. This is the sentinel. If there is a sentinel,
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special meaning. This is the sentinel. If there is a sentinel,
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there is by definition a next pointer. */
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there is by definition a next pointer. */
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unsigned long*
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unsigned long*
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getsentinel(M_HEADERP this)
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getsentinel(M_HEADERP this)
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{
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{
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DATA_T* addr = (getend(this) - sizeof(M_HEADERP)); /* location of next pointer. */
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DATA_T* addr = (getend(this) - sizeof(M_HEADERP)); /* location of next pointer. */
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if (getdata(this) < addr)
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if (getdata(this) < addr)
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return ((unsigned long*)addr) - 1; /* Right before next pointer. */
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return ((unsigned long*)addr) - 1; /* Right before next pointer. */
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else
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else
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return NULL; /* Block too small. No room for sent. */
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return NULL; /* Block too small. No room for sent. */
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}
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}
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void
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void
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setsentinel(M_HEADERP this, unsigned long lflag)
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setsentinel(M_HEADERP this, unsigned long lflag)
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{
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{
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unsigned long* addr = getsentinel(this);
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unsigned long* addr = getsentinel(this);
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if (addr)
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if (addr)
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*addr = lflag;
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*addr = lflag;
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}
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}
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BOOLEAN
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BOOLEAN
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testsentinel(M_HEADERP this, unsigned long lflag)
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testsentinel(M_HEADERP this, unsigned long lflag)
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{
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{
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unsigned long* addr = getsentinel(this);
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unsigned long* addr = getsentinel(this);
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if (addr)
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if (addr)
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return *addr == lflag;
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return *addr == lflag;
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else
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else
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return TRUE;
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return TRUE;
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}
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}
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/* sizeof(struct M_HEADER)+sizeof(M_HEADERP); Alignment */
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/* sizeof(struct M_HEADER)+sizeof(M_HEADERP); Alignment */
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#define M_BLOCKSIZE 8
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#define M_BLOCKSIZE 8
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/* 4096 / 8; // M_BLOCKSIZE ; Number of freelist entries. */
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/* 4096 / 8; // M_BLOCKSIZE ; Number of freelist entries. */
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#define M_FREESIZE 512
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#define M_FREESIZE 512
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/* 64 * 1024; Size of incremental memory hunks allocated, */
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/* 64 * 1024; Size of incremental memory hunks allocated, */
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#define M_BRKINC 2048
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#define M_BRKINC 2048
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static M_HEADERP freelist[M_FREESIZE]; /* Free list. */
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static M_HEADERP freelist[M_FREESIZE]; /* Free list. */
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static M_HEADERP alloclist = NULL; /* Pointer to linked list
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static M_HEADERP alloclist = NULL; /* Pointer to linked list
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of Allocated blocks. */
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of Allocated blocks. */
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static int mdebuglevel = M_DBG_NORMAL;
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static int mdebuglevel = M_DBG_NORMAL;
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static DATA_T zerobuf[M_BLOCKSIZE] = { M_ZEROFLAG, M_ZEROFLAG, M_ZEROFLAG,
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static DATA_T zerobuf[M_BLOCKSIZE] = { M_ZEROFLAG, M_ZEROFLAG, M_ZEROFLAG,
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M_ZEROFLAG, M_ZEROFLAG, M_ZEROFLAG,
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M_ZEROFLAG, M_ZEROFLAG, M_ZEROFLAG,
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M_ZEROFLAG, M_ZEROFLAG };
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M_ZEROFLAG, M_ZEROFLAG };
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static M_HEADERP zeroblock = (M_HEADERP)zerobuf;
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static M_HEADERP zeroblock = (M_HEADERP)zerobuf;
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static unsigned long totalallocated = 0; /* NOT actually malloced, but
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static unsigned long totalallocated = 0; /* NOT actually malloced, but
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rather the size of the pool. */
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rather the size of the pool. */
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static unsigned long totalmalloc = 0; /* Total amount malloced. */
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static unsigned long totalmalloc = 0; /* Total amount malloced. */
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static unsigned long highwater = 0; /* Largest amount of memory
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static unsigned long highwater = 0; /* Largest amount of memory
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allocated at any time. */
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allocated at any time. */
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static long nummallocs = 0;
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static long nummallocs = 0;
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static long numfrees = 0;
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static long numfrees = 0;
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static long numreallocs = 0;
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static long numreallocs = 0;
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int m_prtflag = 0;
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int m_prtflag = 0;
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int m_stopaddr = 0;
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int m_stopaddr = 0;
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int m_stopcnt = 0;
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int m_stopcnt = 0;
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int m_reenter = 0;
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int m_reenter = 0;
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static int m_curcount = 0;
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static int m_curcount = 0;
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M_HEADERP
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M_HEADERP
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getmemblock(size_t n)
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getmemblock(size_t n)
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{
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{
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M_HEADERP block = (M_HEADERP) sbrk(n);
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M_HEADERP block = (M_HEADERP) sbrk(n);
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if (block != NULL)
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if (block != NULL)
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totalallocated += n;
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totalallocated += n;
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return block;
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return block;
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}
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}
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static BOOLEAN
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static BOOLEAN
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die (char* msg)
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die (char* msg)
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{
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{
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mdebuglevel = M_DBG_NORMAL;
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mdebuglevel = M_DBG_NORMAL;
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#ifdef DEBUG
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#ifdef DEBUG
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printf ("%s\n", msg);
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printf ("%s\n", msg);
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exit (1);
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exit (1);
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#else
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#else
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/* Go into infinite loop. */
|
/* Go into infinite loop. */
|
for (;;)
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for (;;)
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;
|
;
|
#endif
|
#endif
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return FALSE;
|
return FALSE;
|
}
|
}
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|
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int
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int
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getfreeindex(size_t size)
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getfreeindex(size_t size)
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{
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{
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return MIN(size / M_BLOCKSIZE, M_FREESIZE - 1);
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return MIN(size / M_BLOCKSIZE, M_FREESIZE - 1);
|
}
|
}
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|
|
static
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static
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void coalesce(M_HEADERP h)
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void coalesce(M_HEADERP h)
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{
|
{
|
/* Coalesce block h with free block any free blocks after it.
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/* Coalesce block h with free block any free blocks after it.
|
Assumes that H is currently allocated. Sentinel at end is
|
Assumes that H is currently allocated. Sentinel at end is
|
set to allocated so if H is free, caller has to fix it. */
|
set to allocated so if H is free, caller has to fix it. */
|
for (;;)
|
for (;;)
|
{
|
{
|
long i;
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long i;
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M_HEADERP f;
|
M_HEADERP f;
|
M_HEADERP next = (M_HEADERP)getend(h);
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M_HEADERP next = (M_HEADERP)getend(h);
|
|
|
if (next || isalloced(next))
|
if (next || isalloced(next))
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break; /* no more coalscing can be done. */
|
break; /* no more coalscing can be done. */
|
|
|
/* Take it off the free list. */
|
/* Take it off the free list. */
|
i = getfreeindex(getsize(next));
|
i = getfreeindex(getsize(next));
|
f = freelist[i];
|
f = freelist[i];
|
if (f == next)
|
if (f == next)
|
freelist[i] = getnext(next);
|
freelist[i] = getnext(next);
|
else
|
else
|
{
|
{
|
while (f != NULL && getnext(f) != next)
|
while (f != NULL && getnext(f) != next)
|
f = getnext(f);
|
f = getnext(f);
|
|
|
/* Didn't find it in the free list. */
|
/* Didn't find it in the free list. */
|
if (f == NULL)
|
if (f == NULL)
|
die ("Coalesce failed.");
|
die ("Coalesce failed.");
|
|
|
setnext(f, getnext(next));
|
setnext(f, getnext(next));
|
}
|
}
|
|
|
/* Add two blocks together and start over. */
|
/* Add two blocks together and start over. */
|
setsize(h, getsize(h) + getsize(next));
|
setsize(h, getsize(h) + getsize(next));
|
|
|
if (getdbglev(h) > M_DBG_NORMAL)
|
if (getdbglev(h) > M_DBG_NORMAL)
|
{
|
{
|
setsentinel(h, M_ALLOCED);
|
setsentinel(h, M_ALLOCED);
|
}
|
}
|
} /* forever */
|
} /* forever */
|
}
|
}
|
|
|
BOOLEAN
|
BOOLEAN
|
checkalloc(M_HEADERP this)
|
checkalloc(M_HEADERP this)
|
{
|
{
|
if (!isalloced(this))
|
if (!isalloced(this))
|
return die ("checkalloc: pointer header clobbered.");
|
return die ("checkalloc: pointer header clobbered.");
|
|
|
if (getdbglev(this) > M_DBG_NORMAL)
|
if (getdbglev(this) > M_DBG_NORMAL)
|
{
|
{
|
if (!testsentinel(this, M_ALLOCED))
|
if (!testsentinel(this, M_ALLOCED))
|
return die ("checkalloc: pointer length overrun.");
|
return die ("checkalloc: pointer length overrun.");
|
}
|
}
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
BOOLEAN
|
BOOLEAN
|
checkfree(M_HEADERP this)
|
checkfree(M_HEADERP this)
|
{
|
{
|
DATA_T *d;
|
DATA_T *d;
|
int i;
|
int i;
|
if (!isfree(this))
|
if (!isfree(this))
|
die ("checkfree: pointer header clobbered.");
|
die ("checkfree: pointer header clobbered.");
|
|
|
if (getdbglev(this) > M_DBG_NORMAL)
|
if (getdbglev(this) > M_DBG_NORMAL)
|
{
|
{
|
if (!testsentinel(this, M_FREE))
|
if (!testsentinel(this, M_FREE))
|
die ("checkfree: pointer length overrun.");
|
die ("checkfree: pointer length overrun.");
|
|
|
d = getdata(this);
|
d = getdata(this);
|
i = getdatasize(this);
|
i = getdatasize(this);
|
while (i-- > 0) {
|
while (i-- > 0) {
|
if (*d++ != M_FREEFLAG)
|
if (*d++ != M_FREEFLAG)
|
die("checkfree: freed data clobbered.");
|
die("checkfree: freed data clobbered.");
|
}
|
}
|
}
|
}
|
return TRUE;
|
return TRUE;
|
}
|
}
|
|
|
static void
|
static void
|
checkfreelist()
|
checkfreelist()
|
{
|
{
|
long i;
|
long i;
|
for (i = 0; i < M_FREESIZE; i += 1)
|
for (i = 0; i < M_FREESIZE; i += 1)
|
{
|
{
|
M_HEADERP h = (M_HEADERP) freelist[i];
|
M_HEADERP h = (M_HEADERP) freelist[i];
|
while (h != NULL)
|
while (h != NULL)
|
{
|
{
|
checkfree(h);
|
checkfree(h);
|
if (i != (M_FREESIZE - 1) && getsize(h) != (i * M_BLOCKSIZE))
|
if (i != (M_FREESIZE - 1) && getsize(h) != (i * M_BLOCKSIZE))
|
die ("checkfreelist: free list size mismatch.");
|
die ("checkfreelist: free list size mismatch.");
|
h = getnext(h);
|
h = getnext(h);
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
static void
|
static void
|
checkalloclist()
|
checkalloclist()
|
{
|
{
|
M_HEADERP a = (M_HEADERP) alloclist;
|
M_HEADERP a = (M_HEADERP) alloclist;
|
while (a != NULL)
|
while (a != NULL)
|
{
|
{
|
checkalloc(a);
|
checkalloc(a);
|
a = getnext(a);
|
a = getnext(a);
|
}
|
}
|
}
|
}
|
|
|
/* Free a block of memory. This is done by adding to the free list. */
|
/* Free a block of memory. This is done by adding to the free list. */
|
static void
|
static void
|
addtofreelist (M_HEADERP h)
|
addtofreelist (M_HEADERP h)
|
{
|
{
|
long i;
|
long i;
|
/* Merge freed blocks together. */
|
/* Merge freed blocks together. */
|
coalesce(h);
|
coalesce(h);
|
|
|
/* link this block to the front of the appropriate free list. */
|
/* link this block to the front of the appropriate free list. */
|
i = getfreeindex(getsize(h));
|
i = getfreeindex(getsize(h));
|
setnext(h, freelist[i]);
|
setnext(h, freelist[i]);
|
freelist[i] = h;
|
freelist[i] = h;
|
|
|
/* Set the flag info. */
|
/* Set the flag info. */
|
setfree(h);
|
setfree(h);
|
setdbglev(h, mdebuglevel);
|
setdbglev(h, mdebuglevel);
|
if (mdebuglevel > M_DBG_NORMAL)
|
if (mdebuglevel > M_DBG_NORMAL)
|
{
|
{
|
/* Fill with some meaningful (and testable) data. */
|
/* Fill with some meaningful (and testable) data. */
|
setdata(h, M_FREEFLAG);
|
setdata(h, M_FREEFLAG);
|
setsentinel(h, M_FREE);
|
setsentinel(h, M_FREE);
|
}
|
}
|
}
|
}
|
|
|
void
|
void
|
xil_malloc_verify()
|
xil_malloc_verify()
|
{
|
{
|
int i;
|
int i;
|
for ( i = 0; i < M_BLOCKSIZE; i += 1)
|
for ( i = 0; i < M_BLOCKSIZE; i += 1)
|
{
|
{
|
if (zerobuf[i] != M_ZEROFLAG)
|
if (zerobuf[i] != M_ZEROFLAG)
|
die ("malloc_verify: Zero block clobbered.");
|
die ("malloc_verify: Zero block clobbered.");
|
}
|
}
|
checkfreelist();
|
checkfreelist();
|
checkalloclist();
|
checkalloclist();
|
}
|
}
|
|
|
void
|
void
|
xil_malloc_debug (int level)
|
xil_malloc_debug (int level)
|
{
|
{
|
mdebuglevel = MAX (M_DBG_NORMAL, MIN (M_DBG_FULL, level));
|
mdebuglevel = MAX (M_DBG_NORMAL, MIN (M_DBG_FULL, level));
|
}
|
}
|
|
|
void*
|
void*
|
xil_malloc (size_t nbytes)
|
xil_malloc (size_t nbytes)
|
{
|
{
|
int i;
|
int i;
|
int minf;
|
int minf;
|
int maxf;
|
int maxf;
|
size_t msize;
|
size_t msize;
|
M_HEADERP p;
|
M_HEADERP p;
|
M_HEADERP h;
|
M_HEADERP h;
|
|
|
nummallocs += 1;
|
nummallocs += 1;
|
|
|
if (nbytes == 0)
|
if (nbytes == 0)
|
return getdata(zeroblock);
|
return getdata(zeroblock);
|
|
|
if (mdebuglevel == M_DBG_FULL)
|
if (mdebuglevel == M_DBG_FULL)
|
{
|
{
|
#ifdef DEBUG
|
#ifdef DEBUG
|
static unsigned do_cnt = ~0;
|
static unsigned do_cnt = ~0;
|
static unsigned done_cnt = 0;
|
static unsigned done_cnt = 0;
|
if (do_cnt == ~0)
|
if (do_cnt == ~0)
|
{
|
{
|
char *x = (char *)getenv(xil_mem_chkcnt);
|
char *x = (char *)getenv(xil_mem_chkcnt);
|
do_cnt = 1;
|
do_cnt = 1;
|
if (x)
|
if (x)
|
do_cnt = atoi(x);
|
do_cnt = atoi(x);
|
}
|
}
|
if (do_cnt == 1 || done_cnt % do_cnt == 0)
|
if (do_cnt == 1 || done_cnt % do_cnt == 0)
|
xil_malloc_verify();
|
xil_malloc_verify();
|
done_cnt++;
|
done_cnt++;
|
#else
|
#else
|
xil_malloc_verify();
|
xil_malloc_verify();
|
#endif
|
#endif
|
}
|
}
|
|
|
nbytes += sizeof (struct M_HEADER);
|
nbytes += sizeof (struct M_HEADER);
|
|
|
/* If debug, leave room for flag and next pointer. */
|
/* If debug, leave room for flag and next pointer. */
|
if (mdebuglevel > M_DBG_NORMAL)
|
if (mdebuglevel > M_DBG_NORMAL)
|
nbytes += sizeof (long) + sizeof (M_HEADERP*);
|
nbytes += sizeof (long) + sizeof (M_HEADERP*);
|
|
|
/* Round up to allocation unit */
|
/* Round up to allocation unit */
|
msize = ((nbytes + M_BLOCKSIZE - 1) / M_BLOCKSIZE) * M_BLOCKSIZE;
|
msize = ((nbytes + M_BLOCKSIZE - 1) / M_BLOCKSIZE) * M_BLOCKSIZE;
|
|
|
/* Look around for a block of approximately the right size. */
|
/* Look around for a block of approximately the right size. */
|
h = NULL;
|
h = NULL;
|
minf = getfreeindex(msize);
|
minf = getfreeindex(msize);
|
maxf = MIN(minf * 2, M_FREESIZE);
|
maxf = MIN(minf * 2, M_FREESIZE);
|
|
|
for (i = minf; i < M_FREESIZE; i += 1)
|
for (i = minf; i < M_FREESIZE; i += 1)
|
{
|
{
|
if (i >= maxf)
|
if (i >= maxf)
|
i = M_FREESIZE - 1; /* Skip over blocks too large. */
|
i = M_FREESIZE - 1; /* Skip over blocks too large. */
|
|
|
h = freelist[i];
|
h = freelist[i];
|
p = NULL; /* Previous. */
|
p = NULL; /* Previous. */
|
while (h != NULL)
|
while (h != NULL)
|
{
|
{
|
if (getsize(h) >= nbytes)
|
if (getsize(h) >= nbytes)
|
{
|
{
|
/* Take h out of linked list */
|
/* Take h out of linked list */
|
if (p)
|
if (p)
|
setnext(p, getnext(h));
|
setnext(p, getnext(h));
|
else
|
else
|
freelist[i] = getnext(h);
|
freelist[i] = getnext(h);
|
|
|
if (!isfree(h))
|
if (!isfree(h))
|
die ("malloc: freelist clobbered.\n");
|
die ("malloc: freelist clobbered.\n");
|
|
|
goto gotit;
|
goto gotit;
|
}
|
}
|
else
|
else
|
{
|
{
|
p = h;
|
p = h;
|
h = getnext(h);
|
h = getnext(h);
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/* Didn't find any free pointers. Allocate more heap.
|
/* Didn't find any free pointers. Allocate more heap.
|
Round up to next heap increment. */
|
Round up to next heap increment. */
|
i = ((msize + sizeof(long) + M_BRKINC - 1) / M_BRKINC) * M_BRKINC;
|
i = ((msize + sizeof(long) + M_BRKINC - 1) / M_BRKINC) * M_BRKINC;
|
if ((h = getmemblock (i)) == NULL)
|
if ((h = getmemblock (i)) == NULL)
|
{
|
{
|
#ifdef DEBUG
|
#ifdef DEBUG
|
printf ("xil_malloc: Out of dynamic memory.\n");
|
printf ("xil_malloc: Out of dynamic memory.\n");
|
#endif
|
#endif
|
return NULL;
|
return NULL;
|
}
|
}
|
|
|
/* Mark end of block with zero for four bytes so we don't merge next block
|
/* Mark end of block with zero for four bytes so we don't merge next block
|
into free list accidentally. */
|
into free list accidentally. */
|
setsize(h, i - sizeof(long));
|
setsize(h, i - sizeof(long));
|
*((long*)getend(h)) = 0;
|
*((long*)getend(h)) = 0;
|
|
|
gotit:
|
gotit:
|
/* Merge allocated blocks so we can free a bigger part of what is left! */
|
/* Merge allocated blocks so we can free a bigger part of what is left! */
|
coalesce(h);
|
coalesce(h);
|
if (getsize(h) >= msize + M_BLOCKSIZE)
|
if (getsize(h) >= msize + M_BLOCKSIZE)
|
{
|
{
|
M_HEADERP r;
|
M_HEADERP r;
|
int rsize;
|
int rsize;
|
/* add the remainder of this block to the free list. */
|
/* add the remainder of this block to the free list. */
|
rsize = getsize(h) - msize;
|
rsize = getsize(h) - msize;
|
r = (M_HEADERP) (((DATA_T *)h) + msize);
|
r = (M_HEADERP) (((DATA_T *)h) + msize);
|
setsize (r, rsize);
|
setsize (r, rsize);
|
setsize (h, msize);
|
setsize (h, msize);
|
addtofreelist (r);
|
addtofreelist (r);
|
}
|
}
|
|
|
setalloced(h);
|
setalloced(h);
|
setdbglev(h, mdebuglevel);
|
setdbglev(h, mdebuglevel);
|
if (mdebuglevel > M_DBG_NORMAL)
|
if (mdebuglevel > M_DBG_NORMAL)
|
{
|
{
|
// Chain into alloc'd list and set sentinel. */
|
// Chain into alloc'd list and set sentinel. */
|
setsentinel(h, M_ALLOCED);
|
setsentinel(h, M_ALLOCED);
|
setnext(h, alloclist);
|
setnext(h, alloclist);
|
alloclist = h;
|
alloclist = h;
|
}
|
}
|
|
|
#ifdef DEBUG
|
#ifdef DEBUG
|
if (!m_reenter && m_prtflag)
|
if (!m_reenter && m_prtflag)
|
{
|
{
|
m_reenter = 1;
|
m_reenter = 1;
|
printf("%d malloc\n",h+1);
|
printf("%d malloc\n",h+1);
|
fflush(stdout);
|
fflush(stdout);
|
if (m_stopaddr)
|
if (m_stopaddr)
|
{
|
{
|
if ((DATA_T *)m_stopaddr == getdata(h))
|
if ((DATA_T *)m_stopaddr == getdata(h))
|
{
|
{
|
if (m_stopcnt == ++m_curcount)
|
if (m_stopcnt == ++m_curcount)
|
exit(10);
|
exit(10);
|
}
|
}
|
}
|
}
|
m_reenter = 0;
|
m_reenter = 0;
|
}
|
}
|
#endif
|
#endif
|
|
|
totalmalloc += getsize(h);
|
totalmalloc += getsize(h);
|
if (totalmalloc > highwater)
|
if (totalmalloc > highwater)
|
highwater = totalmalloc;
|
highwater = totalmalloc;
|
|
|
return getdata(h);
|
return getdata(h);
|
}
|
}
|
|
|
void
|
void
|
xil_free(void* ap)
|
xil_free(void* ap)
|
{
|
{
|
M_HEADERP h;
|
M_HEADERP h;
|
numfrees += 1;
|
numfrees += 1;
|
|
|
if (ap == NULL)
|
if (ap == NULL)
|
{
|
{
|
#ifdef DEBUG
|
#ifdef DEBUG
|
if (mdebuglevel != M_DBG_NORMAL && getenv(xil_mem_null_free))
|
if (mdebuglevel != M_DBG_NORMAL && getenv(xil_mem_null_free))
|
die ("free: tried to free NULL pointer.");
|
die ("free: tried to free NULL pointer.");
|
else
|
else
|
return; /* Let `em do it. */
|
return; /* Let `em do it. */
|
#else
|
#else
|
return;
|
return;
|
#endif
|
#endif
|
}
|
}
|
|
|
/* Drop through to here if not a smartheap allocation. This
|
/* Drop through to here if not a smartheap allocation. This
|
handles free of both xil_malloc and libc malloc. */
|
handles free of both xil_malloc and libc malloc. */
|
|
|
h = (M_HEADERP) (((DATA_T *)ap) - sizeof (struct M_HEADER));
|
h = (M_HEADERP) (((DATA_T *)ap) - sizeof (struct M_HEADER));
|
|
|
if (h == zeroblock)
|
if (h == zeroblock)
|
return;
|
return;
|
|
|
#ifdef DEBUG
|
#ifdef DEBUG
|
if (!m_reenter && m_prtflag) {
|
if (!m_reenter && m_prtflag) {
|
m_reenter = 1;
|
m_reenter = 1;
|
printf("%d mfree\n",h+1);
|
printf("%d mfree\n",h+1);
|
fflush(stdout);
|
fflush(stdout);
|
m_reenter = 0;
|
m_reenter = 0;
|
}
|
}
|
#endif
|
#endif
|
|
|
if (!isalloced(h)) {
|
if (!isalloced(h)) {
|
if (isfree(h))
|
if (isfree(h))
|
die ("free: tried to free pointer twice.");
|
die ("free: tried to free pointer twice.");
|
else
|
else
|
die ("free: tried to free a block not allocated by malloc.");
|
die ("free: tried to free a block not allocated by malloc.");
|
return;
|
return;
|
}
|
}
|
|
|
if (getdbglev(h) > M_DBG_NORMAL)
|
if (getdbglev(h) > M_DBG_NORMAL)
|
{
|
{
|
/* Make sure things look reasonable. */
|
/* Make sure things look reasonable. */
|
checkalloc(h);
|
checkalloc(h);
|
|
|
/* Try to find the pointer in the alloc list. */
|
/* Try to find the pointer in the alloc list. */
|
if (alloclist == h)
|
if (alloclist == h)
|
alloclist = getnext(h);
|
alloclist = getnext(h);
|
else
|
else
|
{
|
{
|
M_HEADERP a = alloclist;
|
M_HEADERP a = alloclist;
|
while (a != NULL && getnext(a) != h)
|
while (a != NULL && getnext(a) != h)
|
a = getnext(a);
|
a = getnext(a);
|
|
|
/* If a is NULL, debuglevel must have been reset at some point. */
|
/* If a is NULL, debuglevel must have been reset at some point. */
|
if (a != NULL)
|
if (a != NULL)
|
setnext(a, getnext(h));
|
setnext(a, getnext(h));
|
}
|
}
|
}
|
}
|
|
|
totalmalloc -= getsize(h);
|
totalmalloc -= getsize(h);
|
|
|
addtofreelist (h);
|
addtofreelist (h);
|
|
|
if (mdebuglevel == M_DBG_FULL)
|
if (mdebuglevel == M_DBG_FULL)
|
{
|
{
|
#ifdef DEBUG
|
#ifdef DEBUG
|
static unsigned do_cnt = ~0;
|
static unsigned do_cnt = ~0;
|
static unsigned done_cnt = 0;
|
static unsigned done_cnt = 0;
|
if (do_cnt == ~0)
|
if (do_cnt == ~0)
|
{
|
{
|
char *x = (char *)getenv(xil_mem_chkcnt);
|
char *x = (char *)getenv(xil_mem_chkcnt);
|
do_cnt = 1;
|
do_cnt = 1;
|
if (x)
|
if (x)
|
do_cnt = atoi(x);
|
do_cnt = atoi(x);
|
}
|
}
|
if (do_cnt == 1 || done_cnt % do_cnt == 0)
|
if (do_cnt == 1 || done_cnt % do_cnt == 0)
|
xil_malloc_verify();
|
xil_malloc_verify();
|
done_cnt++;
|
done_cnt++;
|
#else
|
#else
|
xil_malloc_verify();
|
xil_malloc_verify();
|
#endif
|
#endif
|
}
|
}
|
}
|
}
|
|
|
unsigned
|
unsigned
|
xil_msize (void* ap)
|
xil_msize (void* ap)
|
{
|
{
|
M_HEADERP h = (M_HEADERP) (((DATA_T *)ap) - sizeof (struct M_HEADER));
|
M_HEADERP h = (M_HEADERP) (((DATA_T *)ap) - sizeof (struct M_HEADER));
|
return getdatasize(h);
|
return getdatasize(h);
|
}
|
}
|
|
|
void*
|
void*
|
xil_realloc (void* oldblk, size_t newsize )
|
xil_realloc (void* oldblk, size_t newsize )
|
{
|
{
|
M_HEADERP h;
|
M_HEADERP h;
|
size_t oldsize;
|
size_t oldsize;
|
void* newblk;
|
void* newblk;
|
|
|
numreallocs += 1;
|
numreallocs += 1;
|
|
|
if (oldblk == NULL)
|
if (oldblk == NULL)
|
{
|
{
|
if (mdebuglevel != M_DBG_NORMAL)
|
if (mdebuglevel != M_DBG_NORMAL)
|
die ("realloc: tried to realloc NULL pointer.");
|
die ("realloc: tried to realloc NULL pointer.");
|
else
|
else
|
return xil_malloc(newsize); /* Don't need to copy anything. */
|
return xil_malloc(newsize); /* Don't need to copy anything. */
|
}
|
}
|
|
|
/* Make sure this is a valid block. */
|
/* Make sure this is a valid block. */
|
h = (M_HEADERP) (((char*)oldblk) - sizeof (struct M_HEADER));
|
h = (M_HEADERP) (((char*)oldblk) - sizeof (struct M_HEADER));
|
|
|
/* if old block was zero bytes, just alloc a new one. */
|
/* if old block was zero bytes, just alloc a new one. */
|
if (h == zeroblock)
|
if (h == zeroblock)
|
return xil_malloc(newsize); /* Source is empty anyway. */
|
return xil_malloc(newsize); /* Source is empty anyway. */
|
|
|
/* If old block was already freed, error. */
|
/* If old block was already freed, error. */
|
if (isfree(h))
|
if (isfree(h))
|
die ("realloc: tried to realloc freed pointer.");
|
die ("realloc: tried to realloc freed pointer.");
|
|
|
if (!isalloced(h))
|
if (!isalloced(h))
|
{
|
{
|
long* pdesc = *(long**)h; /* Get pointer to the block descriptor. */
|
long* pdesc = *(long**)h; /* Get pointer to the block descriptor. */
|
long* pnextdesc = (long*)*pdesc;
|
long* pnextdesc = (long*)*pdesc;
|
if ((pdesc[1] & ~3) != (long)h) /* Should point back to block. */
|
if ((pdesc[1] & ~3) != (long)h) /* Should point back to block. */
|
die ("realloc: header clobbered.");
|
die ("realloc: header clobbered.");
|
|
|
/* This must be a libc block. We need to figure out how big it is.
|
/* This must be a libc block. We need to figure out how big it is.
|
Length of block is delta between two descriptors - sizeof (void*). */
|
Length of block is delta between two descriptors - sizeof (void*). */
|
|
|
oldsize = (size_t) ((pnextdesc[1] & ~3) - (pdesc[1] & ~3)-sizeof(void*));
|
oldsize = (size_t) ((pnextdesc[1] & ~3) - (pdesc[1] & ~3)-sizeof(void*));
|
|
|
/* Don't bother to change anything unless there's not enough room. */
|
/* Don't bother to change anything unless there's not enough room. */
|
if (oldsize < newsize)
|
if (oldsize < newsize)
|
{
|
{
|
/* Alloc a new block with our malloc. */
|
/* Alloc a new block with our malloc. */
|
if ((newblk = xil_malloc(newsize)) == NULL )
|
if ((newblk = xil_malloc(newsize)) == NULL )
|
return NULL ;
|
return NULL ;
|
|
|
/* Copy the old data to it. */
|
/* Copy the old data to it. */
|
memcpy (newblk, oldblk, (newsize < oldsize) ? newsize : oldsize);
|
memcpy (newblk, oldblk, (newsize < oldsize) ? newsize : oldsize);
|
xil_free(oldblk);
|
xil_free(oldblk);
|
return newblk;
|
return newblk;
|
}
|
}
|
}
|
}
|
|
|
/* If the new size is bigger than my allocated
|
/* If the new size is bigger than my allocated
|
size, or if more than 1/4 of the block would be left free, allocate
|
size, or if more than 1/4 of the block would be left free, allocate
|
a new block and copy the data. Otherwise, leave well enough alone. */
|
a new block and copy the data. Otherwise, leave well enough alone. */
|
|
|
coalesce(h);
|
coalesce(h);
|
|
|
oldsize = getdatasize(h);
|
oldsize = getdatasize(h);
|
|
|
if (oldsize < newsize
|
if (oldsize < newsize
|
|| (newsize > (2*M_BLOCKSIZE) && (newsize*4) < (oldsize*3)))
|
|| (newsize > (2*M_BLOCKSIZE) && (newsize*4) < (oldsize*3)))
|
{
|
{
|
if (( newblk = xil_malloc( newsize )) == NULL )
|
if (( newblk = xil_malloc( newsize )) == NULL )
|
return NULL ;
|
return NULL ;
|
|
|
memcpy (newblk, oldblk, (newsize < oldsize) ? newsize : oldsize);
|
memcpy (newblk, oldblk, (newsize < oldsize) ? newsize : oldsize);
|
|
|
xil_free (oldblk);
|
xil_free (oldblk);
|
return newblk;
|
return newblk;
|
}
|
}
|
else
|
else
|
return oldblk;
|
return oldblk;
|
}
|
}
|
|
|
void*
|
void*
|
xil_calloc (size_t number, size_t size)
|
xil_calloc (size_t number, size_t size)
|
{
|
{
|
long* longptr ;
|
long* longptr ;
|
void* blockptr ;
|
void* blockptr ;
|
size_t temp = number * size + sizeof (long) - 1;
|
size_t temp = number * size + sizeof (long) - 1;
|
temp -= temp % sizeof (long);
|
temp -= temp % sizeof (long);
|
|
|
blockptr = xil_malloc( temp );
|
blockptr = xil_malloc( temp );
|
if ( blockptr != 0 )
|
if ( blockptr != 0 )
|
{
|
{
|
longptr = (long*) blockptr ;
|
longptr = (long*) blockptr ;
|
temp /= sizeof (long);
|
temp /= sizeof (long);
|
while ( temp-- > 0 )
|
while ( temp-- > 0 )
|
{
|
{
|
*longptr++ = 0 ;
|
*longptr++ = 0 ;
|
}
|
}
|
}
|
}
|
return blockptr ;
|
return blockptr ;
|
}
|
}
|
|
|
#define M_STAT_NORMAL 0
|
#define M_STAT_NORMAL 0
|
#define M_STAT_VERBOSE 1
|
#define M_STAT_VERBOSE 1
|
#define M_STAT_REALLYVERBOSE 2
|
#define M_STAT_REALLYVERBOSE 2
|
|
|
#ifdef DEBUG
|
#ifdef DEBUG
|
void
|
void
|
xil_mstats(int verbosity)
|
xil_mstats(int verbosity)
|
{
|
{
|
unsigned long totalfree = 0;
|
unsigned long totalfree = 0;
|
int i;
|
int i;
|
printf("Memory Statics:\n"
|
printf("Memory Statics:\n"
|
"---------------\n");
|
"---------------\n");
|
printf(" Number of calls to malloc: %ld.\n", nummallocs);
|
printf(" Number of calls to malloc: %ld.\n", nummallocs);
|
printf(" Number of calls to free: %ld.\n", numfrees);
|
printf(" Number of calls to free: %ld.\n", numfrees);
|
printf(" Number of calls to realloc: %ld.\n", numreallocs);
|
printf(" Number of calls to realloc: %ld.\n", numreallocs);
|
printf(" Total allocated memory: %lu (0x%lx)\n",
|
printf(" Total allocated memory: %lu (0x%lx)\n",
|
totalallocated, totalallocated);
|
totalallocated, totalallocated);
|
printf(" Currently malloced memory: %lu (0x%lx)\n",
|
printf(" Currently malloced memory: %lu (0x%lx)\n",
|
totalmalloc, totalmalloc);
|
totalmalloc, totalmalloc);
|
fflush(stdout);
|
fflush(stdout);
|
|
|
|
|
for (i = 0; i < M_FREESIZE; i += 1)
|
for (i = 0; i < M_FREESIZE; i += 1)
|
{
|
{
|
M_HEADERP h = freelist[i];
|
M_HEADERP h = freelist[i];
|
unsigned long numblocks = 0;
|
unsigned long numblocks = 0;
|
while (h != NULL)
|
while (h != NULL)
|
{
|
{
|
totalfree += getsize(h);
|
totalfree += getsize(h);
|
numblocks += 1;
|
numblocks += 1;
|
h = getnext(h);
|
h = getnext(h);
|
}
|
}
|
if (verbosity > M_STAT_NORMAL && numblocks > 0)
|
if (verbosity > M_STAT_NORMAL && numblocks > 0)
|
{
|
{
|
printf(" There are %d blocks on freelist for size %d\n",
|
printf(" There are %d blocks on freelist for size %d\n",
|
numblocks, i * M_BLOCKSIZE);
|
numblocks, i * M_BLOCKSIZE);
|
fflush(stdout);
|
fflush(stdout);
|
}
|
}
|
}
|
}
|
printf(" Currently free memory: %lu (0x%lx)\n",
|
printf(" Currently free memory: %lu (0x%lx)\n",
|
totalfree, totalfree);
|
totalfree, totalfree);
|
printf(" High water mark: %lu (0x%lx)\n",
|
printf(" High water mark: %lu (0x%lx)\n",
|
highwater, highwater);
|
highwater, highwater);
|
|
|
printf("\n");
|
printf("\n");
|
fflush(stdout);
|
fflush(stdout);
|
}
|
}
|
#else
|
#else
|
void
|
void
|
xil_mstats(int verbosity)
|
xil_mstats(int verbosity)
|
{
|
{
|
}
|
}
|
#endif
|
#endif
|
|
|
