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/cvs/deliantra/server/common/shstr.C
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Comparing deliantra/server/common/shstr.C (file contents):
Revision 1.9 by root, Mon Sep 4 17:16:19 2006 UTC vs.
Revision 1.14 by root, Mon Sep 11 23:33:28 2006 UTC

1
1/* 2/*
2 * shstr.C 3 * shstr.C
3 */ 4 */
4 5
5#include <cstring> 6#include <cstring>
6#include <cstdlib> 7#include <cstdlib>
7 8
9#include <glib.h>
10
8#include <tr1/unordered_set> 11#include <tr1/unordered_set>
9 12
10#include "shstr.h" 13#include "shstr.h"
11#include "util.h" 14#include "util.h"
12 15
13typedef std::tr1::unordered_set<const char *, str_hash, str_equal> HT; 16typedef
17std::tr1::unordered_set < const char *,
18 str_hash,
19 str_equal >
20 HT;
14 21
15static HT ht; 22static HT
23 ht;
16 24
17static const char *makevec (const char *s) 25static const char *
26makevec (const char *s)
18{ 27{
28 int
19 int len = strlen (s); 29 len = strlen (s);
20 30
31 const char *
21 const char *v = (const char *)(2 + (int *)malloc (sizeof (int) * 2 + len + 1)); 32 v = (const char *) (2 + (int *) g_slice_alloc (sizeof (int) * 2 + len + 1));
22 33
23 shstr::length (v) = len; 34 shstr::length (v) = len;
24 shstr::refcnt (v) = 1; 35 shstr::refcnt (v) = 1;
25 36
26 memcpy ((char *)v, s, len + 1); 37 memcpy ((char *) v, s, len + 1);
27 38
28 return v; 39 return v;
29} 40}
30 41
42const char *
31const char *shstr::null = makevec ("<nil>"); 43 shstr::null = makevec ("<nil>");
32 44
33// what weird misoptimisation is this again? 45// what weird misoptimisation is this again?
34const shstr undead_name ("undead"); 46const shstr undead_name ("undead");
35 47
36const char * 48const char *
… …
39 if (!s) 51 if (!s)
40 return s; 52 return s;
41 53
42 HT::iterator i = ht.find (s); 54 HT::iterator i = ht.find (s);
43 55
44 return i != ht.end () 56 return i != ht.end ()? *i : 0;
45 ? *i
46 : 0;
47} 57}
48 58
49const char * 59const char *
50shstr::intern (const char *s) 60shstr::intern (const char *s)
51{ 61{
… …
66// periodically test refcounts == 0 for a few strings 76// periodically test refcounts == 0 for a few strings
67// this is the ONLY thing that erases stuff from ht. keep it that way. 77// this is the ONLY thing that erases stuff from ht. keep it that way.
68void 78void
69shstr::gc () 79shstr::gc ()
70{ 80{
81return; //D
82//D currently disabled: some datastructures might still store them
83//D but their pointers will become invalidated
71 static const char *curpos; 84 static const char *curpos;
72 85
73 HT::iterator i = curpos ? ht.find (curpos) : ht.begin (); 86 HT::iterator i = curpos ? ht.find (curpos) : ht.begin ();
74 87
75 if (i == ht.end ()) 88 if (i == ht.end ())
… …
89 break; 102 break;
90 else if (!refcnt (*i)) 103 else if (!refcnt (*i))
91 { 104 {
92 HT::iterator o = i++; 105 HT::iterator o = i++;
93 const char *s = *o; 106 const char *s = *o;
107
94 ht.erase (o); 108 ht.erase (o);
95 109
96 //printf ("GC %4d %3d %d >%s<%d\n", (int)ht.size (), n, shstr::refcnt (s), s, shstr::length (s)); 110 //printf ("GC %4d %3d %d >%s<%d\n", (int)ht.size (), n, shstr::refcnt (s), s, shstr::length (s));
97 free (-2 + (int *)s); 111 g_slice_free1 (sizeof (int) * 2 + length (s) + 1, -2 + (int *) s);
98 } 112 }
99 else 113 else
100 ++i; 114 ++i;
101 } 115 }
102 116
103 curpos = *i; 117 curpos = *i;
104} 118}
105 119
106//TODO: this should of course not be here 120//TODO: this should of course not be here
121
107/* buf_overflow() - we don't want to exceed the buffer size of 122/* buf_overflow() - we don't want to exceed the buffer size of
108 * buf1 by adding on buf2! Returns true if overflow will occur. 123 * buf1 by adding on buf2! Returns true if overflow will occur.
109 */ 124 */
110 125
111int 126int
112buf_overflow (const char *buf1, const char *buf2, int bufsize) 127buf_overflow (const char *buf1, const char *buf2, int bufsize)
113{ 128{
114 int len1 = 0, len2 = 0; 129 int len1 = 0, len2 = 0;
115 130
116 if (buf1) 131 if (buf1)
117 len1 = strlen (buf1); 132 len1 = strlen (buf1);
118 if (buf2) 133 if (buf2)
119 len2 = strlen (buf2); 134 len2 = strlen (buf2);
120 if ((len1 + len2) >= bufsize) 135 if ((len1 + len2) >= bufsize)
121 return 1;
122 return 0; 136 return 1;
137 return 0;
123} 138}
124

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