1 /* 2 * This module derived from code donated to the FreeBSD Project by 3 * Matthew Dillon <dillon@backplane.com> 4 * 5 * Copyright (c) 1998 The FreeBSD Project 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/lib/libstand/zalloc_mem.h,v 1.3 1999/08/28 00:05:35 peter Exp $ 30 */ 31 32 #ifndef _STAND_ZALLOC_MEM_H_ 33 #define _STAND_ZALLOC_MEM_H_ 34 35 /* 36 * H/MEM.H 37 * 38 * Basic memory pool / memory node structures. 39 */ 40 41 typedef struct MemNode { 42 struct MemNode *mr_Next; 43 uintptr_t mr_Bytes; 44 } MemNode; 45 46 typedef struct MemPool { 47 void *mp_Base; 48 void *mp_End; 49 MemNode *mp_First; 50 uintptr_t mp_Size; 51 uintptr_t mp_Used; 52 } MemPool; 53 54 #define MEMNODE_SIZE_MASK ((sizeof(MemNode) <= 8) ? 7 : 15) 55 56 #define ZNOTE_FREE 0 57 #define ZNOTE_REUSE 1 58 59 #endif /* !_STAND_ZALLOC_MEM_H_ */ 60