1 /* $NetBSD: stalloc.h,v 1.3 1996/04/12 09:05:17 leo Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Christian E. Hopps (allocator stuff) 5 * Copyright (c) 1995 Leo Weppelman (Atari modifications) 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef _ATARI_STALLOC_H 37 #define _ATARI_STALLOC_H 38 /* 39 * St-mem allocator stuff. 40 */ 41 struct mem_node { 42 CIRCLEQ_ENTRY(mem_node) link; 43 CIRCLEQ_ENTRY(mem_node) free_link; 44 u_long size; /* size of memory following node. */ 45 }; 46 47 #define ST_BLOCKSIZE (sizeof(long)) 48 #define ST_BLOCKMASK (~(ST_BLOCKSIZE - 1)) 49 #define MNODES_MEM(mn) ((u_char *)(&mn[1])) 50 51 void init_stmem __P((void)); 52 void *alloc_stmem __P((u_long, void **)); 53 void free_stmem __P((void *)); 54 55 #endif /* _ATARI_STALLOC_H */ 56