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Comparing deliantra/server/common/shstr.C (file contents):
Revision 1.16 by root, Tue Sep 12 00:53:56 2006 UTC vs.
Revision 1.23 by root, Mon May 28 21:21:40 2007 UTC

1/*
2 * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game.
3 *
4 * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team
5 *
6 * Crossfire TRT is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the Free
8 * Software Foundation; either version 2 of the License, or (at your option)
9 * any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51
18 * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 *
20 * The authors can be reached via e-mail to <crossfire@schmorp.de>
21 */
1 22
2/* 23/*
3 * shstr.C 24 * shstr.C
4 */ 25 */
5 26
6#include <cstring> 27#include <cstring>
7#include <cstdlib> 28#include <cstdlib>
8
9#include <glib.h> 29#include <glib.h>
10
11#include <tr1/unordered_set> 30#include <tr1/unordered_set>
12 31
13#include "global.h" 32#include "global.h"
14 33
15typedef std::tr1::unordered_set<const char *, str_hash, str_equal> HT; 34typedef std::tr1::unordered_set <const char *, str_hash, str_equal, slice_allocator<const char *>, true> HT;
16 35
17static HT ht; 36static HT ht;
18 37
19static const char * 38static const char *
20makevec (const char *s) 39makevec (const char *s)
21{ 40{
22 int
23 len = strlen (s); 41 int len = strlen (s);
24 42
25 const char *
26 v = (const char *) (2 + (int *) g_slice_alloc (sizeof (int) * 2 + len + 1)); 43 const char *v = (const char *) (2 + (int *)g_slice_alloc (sizeof (int) * 2 + len + 1));
27 44
28 shstr::length (v) = len; 45 shstr::length (v) = len;
29 shstr::refcnt (v) = 1; 46 shstr::refcnt (v) = 1;
30 47
31 memcpy ((char *) v, s, len + 1); 48 memcpy ((char *) v, s, len + 1);
32 49
33 return v; 50 return v;
34} 51}
35 52
53static const char *
54makenull ()
55{
56 const char *s = makevec ("(null)");
57 shstr::length (s) = 0;
58 return s;
59}
60
36const char *shstr::null = makevec ("<nil>"); 61const char *shstr::null = makenull ();
37 62
38const char * 63const char *
39shstr::find (const char *s) 64shstr::find (const char *s)
40{ 65{
41 if (!s) 66 if (!s)
42 return s; 67 return s;
43 68
44 HT::iterator i = ht.find (s); 69 auto (i, ht.find (s));
45 70
46 return i != ht.end ()? *i : 0; 71 return i != ht.end ()? *i : 0;
47} 72}
48 73
49const char * 74const char *
… …
66// periodically test refcounts == 0 for a few strings 91// periodically test refcounts == 0 for a few strings
67// this is the ONLY thing that erases stuff from ht. keep it that way. 92// this is the ONLY thing that erases stuff from ht. keep it that way.
68void 93void
69shstr::gc () 94shstr::gc ()
70{ 95{
71return; //D
72//D currently disabled: some datastructures might still store them
73//D but their pointers will become invalidated
74 static const char *curpos; 96 static const char *curpos;
75 97
76 HT::iterator i = curpos ? ht.find (curpos) : ht.begin (); 98 auto (i, curpos ? ht.find (curpos) : ht.begin ());
77 99
78 if (i == ht.end ()) 100 if (i == ht.end ())
79 i = ht.begin (); 101 i = ht.begin ();
80 102
81 // go through all strings roughly once every 4 minutes 103 // go through all strings roughly once every 4 minutes
… …
90 } 112 }
91 else if (!--n) 113 else if (!--n)
92 break; 114 break;
93 else if (!refcnt (*i)) 115 else if (!refcnt (*i))
94 { 116 {
95 HT::iterator o = i++; 117 auto (o, i++);
96 const char *s = *o; 118 const char *s = *o;
97 119
98 ht.erase (o); 120 ht.erase (o);
99 121
100 //printf ("GC %4d %3d %d >%s<%d\n", (int)ht.size (), n, shstr::refcnt (s), s, shstr::length (s)); 122 //printf ("GC %4d %3d %d >%s<%d\n", (int)ht.size (), n, shstr::refcnt (s), s, shstr::length (s));
… …
115//TODO: this should of course not be here 137//TODO: this should of course not be here
116 138
117/* buf_overflow() - we don't want to exceed the buffer size of 139/* buf_overflow() - we don't want to exceed the buffer size of
118 * buf1 by adding on buf2! Returns true if overflow will occur. 140 * buf1 by adding on buf2! Returns true if overflow will occur.
119 */ 141 */
120
121int 142int
122buf_overflow (const char *buf1, const char *buf2, int bufsize) 143buf_overflow (const char *buf1, const char *buf2, int bufsize)
123{ 144{
124 int len1 = 0, len2 = 0; 145 int len1 = 0, len2 = 0;
125 146
… …
127 len1 = strlen (buf1); 148 len1 = strlen (buf1);
128 if (buf2) 149 if (buf2)
129 len2 = strlen (buf2); 150 len2 = strlen (buf2);
130 if ((len1 + len2) >= bufsize) 151 if ((len1 + len2) >= bufsize)
131 return 1; 152 return 1;
153
132 return 0; 154 return 0;
133} 155}

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