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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)) |