| The Android Open Source Project | dd7bc33 | 2009-03-03 19:32:55 -0800 | [diff] [blame] | 1 | /* $NetBSD: memalloc.h,v 1.14 2003/08/07 09:05:34 agc Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1991, 1993 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to Berkeley by |
| 8 | * Kenneth Almquist. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * 3. Neither the name of the University nor the names of its contributors |
| 19 | * may be used to endorse or promote products derived from this software |
| 20 | * without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | * |
| 34 | * @(#)memalloc.h 8.2 (Berkeley) 5/4/95 |
| 35 | */ |
| 36 | |
| 37 | struct stackmark { |
| 38 | struct stack_block *stackp; |
| 39 | char *stacknxt; |
| 40 | int stacknleft; |
| 41 | struct stackmark *marknext; |
| 42 | }; |
| 43 | |
| 44 | |
| 45 | extern char *stacknxt; |
| 46 | extern int stacknleft; |
| 47 | extern int sstrnleft; |
| 48 | extern int herefd; |
| 49 | |
| 50 | pointer ckmalloc(int); |
| 51 | pointer ckrealloc(pointer, int); |
| 52 | char *savestr(const char *); |
| 53 | pointer stalloc(int); |
| 54 | void stunalloc(pointer); |
| 55 | void setstackmark(struct stackmark *); |
| 56 | void popstackmark(struct stackmark *); |
| 57 | void growstackblock(void); |
| 58 | void grabstackblock(int); |
| 59 | char *growstackstr(void); |
| 60 | char *makestrspace(void); |
| 61 | void ungrabstackstr(char *, char *); |
| 62 | |
| 63 | |
| 64 | |
| 65 | #define stackblock() stacknxt |
| 66 | #define stackblocksize() stacknleft |
| 67 | #define STARTSTACKSTR(p) p = stackblock(), sstrnleft = stackblocksize() |
| 68 | #define STPUTC(c, p) (--sstrnleft >= 0? (*p++ = (c)) : (p = growstackstr(), *p++ = (c))) |
| 69 | #define CHECKSTRSPACE(n, p) { if (sstrnleft < n) p = makestrspace(); } |
| 70 | #define USTPUTC(c, p) (--sstrnleft, *p++ = (c)) |
| 71 | #define STACKSTRNUL(p) (sstrnleft == 0? (p = growstackstr(), *p = '\0') : (*p = '\0')) |
| 72 | #define STUNPUTC(p) (++sstrnleft, --p) |
| 73 | #define STTOPC(p) p[-1] |
| 74 | #define STADJUST(amount, p) (p += (amount), sstrnleft -= (amount)) |
| 75 | #define grabstackstr(p) stalloc(stackblocksize() - sstrnleft) |
| 76 | |
| 77 | #define ckfree(p) free((pointer)(p)) |