1 | /* $NetBSD: memalloc.h,v 1.14 2003/08/07 09:05:34 agc Exp $ */
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2 |
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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. Neither the name of the University nor the names of its contributors
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19 | * may be used to endorse or promote products derived from this software
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20 | * without specific prior written permission.
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21 | *
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22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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32 | * SUCH DAMAGE.
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33 | *
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34 | * @(#)memalloc.h 8.2 (Berkeley) 5/4/95
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35 | */
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36 |
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37 | struct stackmark {
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38 | struct stack_block *stackp;
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39 | char *stacknxt;
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40 | int stacknleft;
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41 | struct stackmark *marknext;
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42 | };
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43 |
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44 |
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45 | /*extern char *stacknxt;
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46 | extern int stacknleft;
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47 | extern int sstrnleft;
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48 | extern int herefd;*/
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49 |
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50 | pointer ckmalloc(struct shinstance *, size_t);
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51 | pointer ckrealloc(struct shinstance *, pointer, size_t);
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52 | char *savestr(struct shinstance *, const char *);
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53 | pointer stalloc(struct shinstance *, size_t);
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54 | void stunalloc(struct shinstance *, pointer);
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55 | void setstackmark(struct shinstance *, struct stackmark *);
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56 | void popstackmark(struct shinstance *, struct stackmark *);
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57 | void growstackblock(struct shinstance *);
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58 | void grabstackblock(struct shinstance *, int);
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59 | char *growstackstr(struct shinstance *);
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60 | char *makestrspace(struct shinstance *);
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61 | void ungrabstackstr(struct shinstance *, char *, char *);
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62 |
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63 |
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64 |
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65 | #define stackblock(psh) (psh)->stacknxt
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66 | #define stackblocksize(psh) (psh)->stacknleft
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67 | #define STARTSTACKSTR(psh, p) p = stackblock(psh), (psh)->sstrnleft = stackblocksize(psh)
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68 | #define STPUTC(psh, c, p) (--(psh)->sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(psh), *p++ = (c)))
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69 | #define CHECKSTRSPACE(psh, n, p) { if ((psh)->sstrnleft < n) p = makestrspace(psh); }
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70 | #define USTPUTC(psh, c, p) (--(psh)->sstrnleft, *p++ = (c))
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71 | #define STACKSTRNUL(psh, p) ((psh)->sstrnleft == 0? (p = growstackstr(psh), *p = '\0') : (*p = '\0'))
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72 | #define STUNPUTC(psh, p) (++(psh)->sstrnleft, --p)
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73 | #define STTOPC(psh, p) p[-1]
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74 | #define STADJUST(psh, amount, p) (p += (amount), (psh)->sstrnleft -= (amount))
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75 | #define grabstackstr(psh, p) stalloc((psh), stackblocksize(psh) - (psh)->sstrnleft)
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76 |
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77 | #define ckfree(psh, p) sh_free(psh, (pointer)(p))
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