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| 2714 | cejka | 1 | /* $NetBSD: memalloc.h,v 1.11 2000/11/01 19:56:01 christos Exp $ */ |
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| 3 | /*- |
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| 4 | * Copyright (c) 1991, 1993 |
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| 5 | * The Regents of the University of California. All rights reserved. |
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| 6 | * |
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| 7 | * This code is derived from software contributed to Berkeley by |
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| 8 | * Kenneth Almquist. |
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| 9 | * |
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| 10 | * Redistribution and use in source and binary forms, with or without |
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| 11 | * modification, are permitted provided that the following conditions |
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| 12 | * are met: |
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| 13 | * 1. Redistributions of source code must retain the above copyright |
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| 14 | * notice, this list of conditions and the following disclaimer. |
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| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 16 | * notice, this list of conditions and the following disclaimer in the |
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| 17 | * documentation and/or other materials provided with the distribution. |
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| 18 | * 3. All advertising materials mentioning features or use of this software |
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| 19 | * must display the following acknowledgement: |
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| 20 | * This product includes software developed by the University of |
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| 21 | * California, Berkeley and its contributors. |
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| 22 | * 4. Neither the name of the University nor the names of its contributors |
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| 23 | * may be used to endorse or promote products derived from this software |
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| 24 | * without specific prior written permission. |
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| 25 | * |
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| 26 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 27 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 28 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 29 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 30 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 31 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 32 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 33 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 34 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 35 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 36 | * SUCH DAMAGE. |
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| 37 | * |
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| 38 | * @(#)memalloc.h 8.2 (Berkeley) 5/4/95 |
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| 39 | */ |
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| 40 | |||
| 41 | struct stackmark { |
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| 42 | struct stack_block *stackp; |
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| 43 | char *stacknxt; |
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| 44 | int stacknleft; |
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| 45 | struct stackmark *marknext; |
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| 46 | }; |
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| 47 | |||
| 48 | |||
| 49 | extern char *stacknxt; |
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| 50 | extern int stacknleft; |
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| 51 | extern int sstrnleft; |
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| 52 | extern int herefd; |
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| 53 | |||
| 54 | pointer ckmalloc (int); |
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| 55 | pointer ckrealloc (pointer, int); |
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| 56 | char *savestr (char *); |
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| 57 | pointer stalloc (int); |
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| 58 | void stunalloc (pointer); |
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| 59 | void setstackmark (struct stackmark *); |
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| 60 | void popstackmark (struct stackmark *); |
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| 61 | void growstackblock (void); |
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| 62 | void grabstackblock (int); |
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| 63 | char *growstackstr (void); |
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| 64 | char *makestrspace (void); |
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| 65 | void ungrabstackstr (char *, char *); |
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| 66 | |||
| 67 | |||
| 68 | |||
| 69 | #define stackblock() stacknxt |
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| 70 | #define stackblocksize() stacknleft |
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| 71 | #define STARTSTACKSTR(p) p = stackblock(), sstrnleft = stackblocksize() |
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| 72 | #define STPUTC(c, p) (--sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(), *p++ = (c))) |
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| 73 | #define CHECKSTRSPACE(n, p) { if (sstrnleft < n) p = makestrspace(); } |
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| 74 | #define USTPUTC(c, p) (--sstrnleft, *p++ = (c)) |
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| 75 | #define STACKSTRNUL(p) (sstrnleft == 0? (p = growstackstr(), *p = '\0') : (*p = '\0')) |
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| 76 | #define STUNPUTC(p) (++sstrnleft, --p) |
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| 77 | #define STTOPC(p) p[-1] |
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| 78 | #define STADJUST(amount, p) (p += (amount), sstrnleft -= (amount)) |
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| 79 | #define grabstackstr(p) stalloc(stackblocksize() - sstrnleft) |
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| 80 | |||
| 81 | #define ckfree(p) free((pointer)(p)) |