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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: dspool.c,v 1.2 2004/04/08 01:36:11 mdw Exp $ |
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4 | * |
5 | * Provide pools of strings |
6 | * |
7 | * (c) 1999 Straylight/Edgeware |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of the mLib utilities library. |
13 | * |
14 | * mLib is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU Library General Public License as |
16 | * published by the Free Software Foundation; either version 2 of the |
17 | * License, or (at your option) any later version. |
18 | * |
19 | * mLib is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU Library General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU Library General Public |
25 | * License along with mLib; if not, write to the Free Software |
26 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
27 | */ |
28 | |
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29 | /*----- Header files ------------------------------------------------------*/ |
30 | |
31 | #include <stdio.h> |
32 | |
33 | #include "dspool.h" |
34 | #include "dstr.h" |
35 | #include "sub.h" |
36 | |
37 | /*----- Main code ---------------------------------------------------------*/ |
38 | |
39 | /* --- @dspool_create@ --- * |
40 | * |
41 | * Arguments: @dspool *p@ = address of pool to create |
42 | * @size_t isz@ = initial size of new strings |
43 | * |
44 | * Returns: --- |
45 | * |
46 | * Use: Initializes a dynamic string pool. |
47 | */ |
48 | |
49 | void dspool_create(dspool *p, size_t isz) |
50 | { |
51 | p->free = 0; |
52 | p->isz = isz; |
53 | } |
54 | |
55 | /* --- @dspool_destroy@ --- * |
56 | * |
57 | * Arguments: @dspool *p@ = pool to destroy |
58 | * |
59 | * Returns: --- |
60 | * |
61 | * Use: Releases all of the strings left in the pool. Any strings |
62 | * not put back into the pool aren't freed. However, the pool |
63 | * is still valid, and the active strings can be put back and |
64 | * released later. |
65 | */ |
66 | |
67 | void dspool_destroy(dspool *p) |
68 | { |
69 | dspoolstr *s = p->free; |
70 | while (s) { |
71 | dspoolstr *n = s->next; |
72 | DDESTROY(&s->ds); |
73 | DESTROY(s); |
74 | s = n; |
75 | } |
76 | p->free = 0; |
77 | } |
78 | |
79 | /* --- @dspool_get@ --- * |
80 | * |
81 | * Arguments: @dspool *p@ = pointer to a string pool |
82 | * |
83 | * Returns: Pointer to a dynamic string. |
84 | * |
85 | * Use: Fetches a string from the pool. The string has space for at |
86 | * least @isz@ characters (where @isz@ is the size passed to |
87 | * @dspool_create@ for the pool). |
88 | */ |
89 | |
90 | dstr *dspool_get(dspool *p) { dstr *d; DSGET(p, d); return (d); } |
91 | |
92 | /* --- @dspool_put@ --- * |
93 | * |
94 | * Arguments: @dspool *p@ = pointer to a string pool |
95 | * @dstr *d@ = pointer to a dynamic string from a string pool |
96 | * |
97 | * Returns: --- |
98 | * |
99 | * Use: Releases a dynamic string back into a string pool. It |
100 | * doesn't have to be the same pool the string actually came |
101 | * from, although it does have to have come from some string |
102 | * pool. |
103 | */ |
104 | |
105 | void dspool_put(dspool *p, dstr *d) { DSPUT(p, d); } |
106 | |
107 | /*----- That's all, folks -------------------------------------------------*/ |