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f497fbf5e4
In C90, NULL is guaranteed to be declared in <stddef.h> and also in <string.h>. Though the correct way to define NULL in FreeBSD is to include <sys/_null.h>, other parts of libstand still require <string.h> to build; therefore, we keep <string.h> in stand.h and add a note about this; - Removing no longer used 'Prototype' definition. Quote from bde@: 'Cruft related to getting incomplete struct declarations within prototypes forward-declared before the structs. It doesn't mean "prototype" but only part of a prototype-related hack. No longer used.' - Replacing iaddr_t with uintptr_t; - Removing use of long double to determine alignment. Use a fixed 16 byte alignment instead; Reviewed by: bde Obtained from: DragonFlyBSD (partially) MFC after: 1 month
56 lines
1.9 KiB
C
56 lines
1.9 KiB
C
/*
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* This module derived from code donated to the FreeBSD Project by
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* Matthew Dillon <dillon@backplane.com>
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*
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* Copyright (c) 1998 The FreeBSD Project
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* All rights reserved.
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*
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, 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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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* H/MEM.H
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*
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* Basic memory pool / memory node structures.
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*/
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typedef struct MemNode {
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struct MemNode *mr_Next;
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uintptr_t mr_Bytes;
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} MemNode;
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typedef struct MemPool {
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void *mp_Base;
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void *mp_End;
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MemNode *mp_First;
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uintptr_t mp_Size;
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uintptr_t mp_Used;
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} MemPool;
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#define MEMNODE_SIZE_MASK ((sizeof(MemNode) <= 8) ? 7 : 15)
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#define ZNOTE_FREE 0
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#define ZNOTE_REUSE 1
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