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1 | /* |
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2 | * This file is part of Crossfire TRT, the Multiplayer Online Role Playing Game. |
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3 | * |
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4 | * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team |
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5 | * |
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6 | * Crossfire TRT is free software; you can redistribute it and/or modify it |
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7 | * under the terms of the GNU General Public License as published by the Free |
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8 | * Software Foundation; either version 2 of the License, or (at your option) |
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9 | * any later version. |
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10 | * |
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11 | * This program is distributed in the hope that it will be useful, but |
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12 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
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13 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 | * for more details. |
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15 | * |
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16 | * You should have received a copy of the GNU General Public License along |
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17 | * with Crossfire TRT; if not, write to the Free Software Foundation, Inc. 51 |
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18 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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19 | * |
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20 | * The authors can be reached via e-mail to <crossfire@schmorp.de> |
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21 | */ |
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22 | |
1 | /* |
23 | /* |
2 | * shstr.C |
24 | * shstr.C |
3 | */ |
25 | */ |
4 | |
26 | |
5 | #include <cstring> |
27 | #include <cstring> |
6 | #include <cstdlib> |
28 | #include <cstdlib> |
7 | |
29 | #include <glib.h> |
8 | #include <tr1/unordered_set> |
30 | #include <tr1/unordered_set> |
9 | |
31 | |
10 | #include "shstr.h" |
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11 | #include "util.h" |
32 | #include "global.h" |
12 | |
33 | |
13 | typedef std::tr1::unordered_set<const char *, str_hash, str_equal> HT; |
34 | typedef std::tr1::unordered_set <const char *, str_hash, str_equal, slice_allocator<const char *>, true> HT; |
14 | |
35 | |
15 | static HT ht; |
36 | static HT ht; |
16 | |
37 | |
17 | static const char *makevec (const char *s) |
38 | static const char * |
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39 | makevec (const char *s) |
18 | { |
40 | { |
19 | int len = strlen (s); |
41 | int len = strlen (s); |
20 | |
42 | |
21 | const char *v = (const char *)(2 + (int *)malloc (sizeof (int) * 2 + len + 1)); |
43 | const char *v = (const char *) (2 + (int *)g_slice_alloc (sizeof (int) * 2 + len + 1)); |
22 | |
44 | |
23 | shstr::length (v) = len; |
45 | shstr::length (v) = len; |
24 | shstr::refcnt (v) = 1; |
46 | shstr::refcnt (v) = 1; |
25 | |
47 | |
26 | memcpy ((char *)v, s, len + 1); |
48 | memcpy ((char *) v, s, len + 1); |
27 | |
49 | |
28 | return v; |
50 | return v; |
29 | } |
51 | } |
30 | |
52 | |
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53 | static const char * |
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54 | makenull () |
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55 | { |
31 | const char *shstr::null = makevec ("<nil>"); |
56 | const char *s = makevec ("(null)"); |
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57 | shstr::length (s) = 0; |
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58 | return s; |
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59 | } |
32 | |
60 | |
33 | // what weird misoptimisation is this again? |
61 | const char *shstr::null = makenull (); |
34 | const shstr undead_name ("undead"); |
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35 | |
62 | |
36 | const char * |
63 | const char * |
37 | shstr::find (const char *s) |
64 | shstr::find (const char *s) |
38 | { |
65 | { |
39 | if (!s) |
66 | if (!s) |
40 | return s; |
67 | return s; |
41 | |
68 | |
42 | HT::iterator i = ht.find (s); |
69 | auto (i, ht.find (s)); |
43 | |
70 | |
44 | return i != ht.end () |
71 | return i != ht.end ()? *i : 0; |
45 | ? *i |
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46 | : 0; |
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47 | } |
72 | } |
48 | |
73 | |
49 | const char * |
74 | const char * |
50 | shstr::intern (const char *s) |
75 | shstr::intern (const char *s) |
51 | { |
76 | { |
… | |
… | |
68 | void |
93 | void |
69 | shstr::gc () |
94 | shstr::gc () |
70 | { |
95 | { |
71 | static const char *curpos; |
96 | static const char *curpos; |
72 | |
97 | |
73 | HT::iterator i = curpos ? ht.find (curpos) : ht.begin (); |
98 | auto (i, curpos ? ht.find (curpos) : ht.begin ()); |
74 | |
99 | |
75 | if (i == ht.end ()) |
100 | if (i == ht.end ()) |
76 | i = ht.begin (); |
101 | i = ht.begin (); |
77 | |
102 | |
78 | // go through all strings roughly once every 4 minutes |
103 | // go through all strings roughly once every 4 minutes |
… | |
… | |
87 | } |
112 | } |
88 | else if (!--n) |
113 | else if (!--n) |
89 | break; |
114 | break; |
90 | else if (!refcnt (*i)) |
115 | else if (!refcnt (*i)) |
91 | { |
116 | { |
92 | HT::iterator o = i++; |
117 | auto (o, i++); |
93 | const char *s = *o; |
118 | const char *s = *o; |
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119 | |
94 | ht.erase (o); |
120 | ht.erase (o); |
95 | |
121 | |
96 | //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)); |
97 | free (-2 + (int *)s); |
123 | g_slice_free1 (sizeof (int) * 2 + length (s) + 1, -2 + (int *) s); |
98 | } |
124 | } |
99 | else |
125 | else |
100 | ++i; |
126 | ++i; |
101 | } |
127 | } |
102 | |
128 | |
103 | curpos = *i; |
129 | curpos = *i; |
104 | } |
130 | } |
105 | |
131 | |
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132 | shstr skill_names[NUM_SKILLS]; |
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133 | |
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134 | // what weird misoptimisation is this again? |
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135 | const shstr undead_name ("undead"); |
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136 | |
106 | //TODO: this should of course not be here |
137 | //TODO: this should of course not be here |
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138 | |
107 | /* 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 |
108 | * buf1 by adding on buf2! Returns true if overflow will occur. |
140 | * buf1 by adding on buf2! Returns true if overflow will occur. |
109 | */ |
141 | */ |
110 | |
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111 | int |
142 | int |
112 | buf_overflow (const char *buf1, const char *buf2, int bufsize) |
143 | buf_overflow (const char *buf1, const char *buf2, int bufsize) |
113 | { |
144 | { |
114 | int len1 = 0, len2 = 0; |
145 | int len1 = 0, len2 = 0; |
115 | |
146 | |
116 | if (buf1) |
147 | if (buf1) |
117 | len1 = strlen (buf1); |
148 | len1 = strlen (buf1); |
118 | if (buf2) |
149 | if (buf2) |
119 | len2 = strlen (buf2); |
150 | len2 = strlen (buf2); |
120 | if ((len1 + len2) >= bufsize) |
151 | if ((len1 + len2) >= bufsize) |
121 | return 1; |
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122 | return 0; |
152 | return 1; |
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153 | |
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154 | return 0; |
123 | } |
155 | } |
124 | |
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