| 1 | /* |
1 | /* |
| 2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
| 3 | * |
3 | * |
| 4 | * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
4 | * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
| 5 | * |
5 | * |
| 6 | * Deliantra is free software: you can redistribute it and/or modify |
6 | * Deliantra is free software: you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation, either version 3 of the License, or |
8 | * the Free Software Foundation, either version 3 of the License, or |
| 9 | * (at your option) any later version. |
9 | * (at your option) any later version. |
| … | |
… | |
| 33 | size_t shstr_alloc; |
33 | size_t shstr_alloc; |
| 34 | |
34 | |
| 35 | typedef std::tr1::unordered_set <const char *, str_hash, str_equal, slice_allocator<const char *>, true> HT; |
35 | typedef std::tr1::unordered_set <const char *, str_hash, str_equal, slice_allocator<const char *>, true> HT; |
| 36 | |
36 | |
| 37 | static HT ht; |
37 | static HT ht; |
|
|
38 | static int next_gc; |
| 38 | |
39 | |
| 39 | static const char * |
40 | static const char * |
| 40 | makevec (const char *s) |
41 | makevec (const char *s) |
| 41 | { |
42 | { |
| 42 | int len = strlen (s); |
43 | int len = strlen (s); |
| … | |
… | |
| 83 | { |
84 | { |
| 84 | ++refcnt (found); |
85 | ++refcnt (found); |
| 85 | return found; |
86 | return found; |
| 86 | } |
87 | } |
| 87 | |
88 | |
|
|
89 | --next_gc; |
| 88 | s = makevec (s); |
90 | s = makevec (s); |
| 89 | ht.insert (s); |
91 | ht.insert (s); |
| 90 | return s; |
92 | return s; |
| 91 | } |
93 | } |
| 92 | |
94 | |
| 93 | // periodically test refcounts == 0 for a few strings |
95 | // periodically test refcounts == 0 for a few strings |
| 94 | // this is the ONLY thing that erases stuff from ht. keep it that way. |
96 | // this is the ONLY thing that erases stuff from ht. keep it that way. |
| 95 | void |
97 | void |
| 96 | shstr::gc () |
98 | shstr::gc () |
| 97 | { |
99 | { |
|
|
100 | if (expect_true (next_gc > 0)) |
|
|
101 | return; |
|
|
102 | |
| 98 | static const char *curpos; |
103 | static const char *curpos; |
| 99 | |
104 | |
| 100 | auto (i, curpos ? ht.find (curpos) : ht.begin ()); |
105 | auto (i, curpos ? ht.find (curpos) : ht.begin ()); |
| 101 | |
106 | |
| 102 | if (i == ht.end ()) |
107 | if (i == ht.end ()) |
| 103 | i = ht.begin (); |
108 | i = ht.begin (); |
| 104 | |
109 | |
| 105 | int n = ht.size () / 256 + 16; |
110 | int n = ht.size () / 256 + 16; |
|
|
111 | next_gc += n >> 1; |
| 106 | |
112 | |
| 107 | for (;;) |
113 | for (;;) |
| 108 | { |
114 | { |
| 109 | if (i == ht.end ()) |
115 | if (i == ht.end ()) |
| 110 | { |
116 | { |
