167 lines
3.1 KiB
C
167 lines
3.1 KiB
C
/*
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* S T O R A G E . C
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*
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* Ray Tracing program, storage manager.
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*
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* Functions -
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* rt_malloc Allocate storage, with visibility & checking
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* rt_free Similarly, free storage
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* rt_prmem When debugging, print memory map
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* calloc, cfree Which call rt_malloc, rt_free
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*
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* Author -
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* Michael John Muuss
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*
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* Source -
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* SECAD/VLD Computing Consortium, Bldg 394
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* The U. S. Army Ballistic Research Laboratory
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* Aberdeen Proving Ground, Maryland 21005-5066
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*
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* Copyright Notice -
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* This software is Copyright (C) 1987 by the United States Army.
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* All rights reserved.
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*/
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#ifndef lint
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static char RCSstorage[] = "@(#)$Header: /cvsroot/src/usr.sbin/named/Attic/storage.c,v 1.1.1.1 1993/03/21 09:45:37 cgd Exp $";
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#endif
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#include <sys/param.h>
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#if BSD >= 43
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#include <sys/syslog.h>
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#else
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#include <stdio.h>
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#define LOG_ERR 0
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#endif BSD
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#undef malloc
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#undef free
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#define MDB_SIZE 20000
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#define MDB_MAGIC 0x12348969
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struct memdebug {
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char *mdb_addr;
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char *mdb_str;
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int mdb_len;
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} rt_mdb[MDB_SIZE];
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/*
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* R T _ M A L L O C
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*/
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char *
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rt_malloc(cnt)
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unsigned int cnt;
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{
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register char *ptr;
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extern char *malloc();
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cnt = (cnt+2*sizeof(int)-1)&(~(sizeof(int)-1));
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ptr = malloc(cnt);
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if( ptr==(char *)0 ) {
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syslog(LOG_ERR, "rt_malloc: malloc failure");
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abort();
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} else {
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register struct memdebug *mp = rt_mdb;
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for( ; mp < &rt_mdb[MDB_SIZE]; mp++ ) {
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if( mp->mdb_len > 0 ) continue;
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mp->mdb_addr = ptr;
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mp->mdb_len = cnt;
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mp->mdb_str = "???";
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goto ok;
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}
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syslog(LOG_ERR, "rt_malloc: memdebug overflow\n");
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}
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ok: ;
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{
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register int *ip = (int *)(ptr+cnt-sizeof(int));
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*ip = MDB_MAGIC;
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}
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return(ptr);
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}
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/*
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* R T _ F R E E
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*/
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void
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rt_free(ptr)
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char *ptr;
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{
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register struct memdebug *mp = rt_mdb;
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for( ; mp < &rt_mdb[MDB_SIZE]; mp++ ) {
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if( mp->mdb_len <= 0 ) continue;
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if( mp->mdb_addr != ptr ) continue;
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{
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register int *ip = (int *)(ptr+mp->mdb_len-sizeof(int));
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if( *ip != MDB_MAGIC ) {
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syslog(LOG_ERR, "ERROR rt_free(x%x, %s) corrupted! x%x!=x%x\n", ptr, "???", *ip, MDB_MAGIC);
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abort();
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}
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}
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mp->mdb_len = 0; /* successful free */
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goto ok;
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}
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syslog(LOG_ERR, "ERROR rt_free(x%x, %s) bad pointer!\n", ptr, "???");
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abort();
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ok: ;
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*((int *)ptr) = -1; /* zappo! */
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free(ptr);
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}
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/*
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* R T _ P R M E M
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*
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* Print map of memory currently in use.
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*/
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void
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rt_prmem(str)
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char *str;
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{
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register struct memdebug *mp = rt_mdb;
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register int *ip;
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printf("\nRT memory use\t\t%s\n", str);
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for( ; mp < &rt_mdb[MDB_SIZE]; mp++ ) {
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if( mp->mdb_len <= 0 ) continue;
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ip = (int *)(mp->mdb_addr+mp->mdb_len-sizeof(int));
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printf("%7x %5x %s %s\n",
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mp->mdb_addr, mp->mdb_len, mp->mdb_str,
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*ip!=MDB_MAGIC ? "-BAD-" : "" );
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if( *ip != MDB_MAGIC )
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printf("\t%x\t%x\n", *ip, MDB_MAGIC);
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}
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}
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char *
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calloc(num, size)
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register unsigned num, size;
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{
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extern char *malloc();
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register char *p;
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size *= num;
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if (p = rt_malloc(size))
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bzero(p, size);
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return (p);
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}
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cfree(p, num, size)
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char *p;
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unsigned num;
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unsigned size;
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{
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rt_free(p);
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}
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#if BSD < 43
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openlog() {}
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syslog(x, str, a, b, c, d, e, f)
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int x;
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char *str;
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int a, b, c, d, e, f;
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{
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fprintf(stderr, str, a, b, c, d, e, f);
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}
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#endif BSD
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