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Comparing deliantra/server/include/util.h (file contents):
Revision 1.9 by root, Tue Sep 12 18:15:34 2006 UTC vs.
Revision 1.24 by root, Mon Dec 25 11:25:49 2006 UTC

… …
5# define is_constant(c) __builtin_constant_p (c) 5# define is_constant(c) __builtin_constant_p (c)
6#else 6#else
7# define is_constant(c) 0 7# define is_constant(c) 0
8#endif 8#endif
9 9
10#include <cstddef>
11
12#include <glib.h>
13
14// use a gcc extension for auto declarations until ISO C++ sanctifies them
15#define AUTODECL(var,expr) typeof(expr) var = (expr)
16
10// makes dynamically allocated objects zero-initialised 17// makes dynamically allocated objects zero-initialised
11struct zero_initialised 18struct zero_initialised
12{ 19{
13 void *operator new (size_t s, void *); 20 void *operator new (size_t s, void *p)
21 {
22 memset (p, 0, s);
23 return p;
24 }
25
14 void *operator new (size_t s); 26 void *operator new (size_t s)
27 {
28 return g_slice_alloc0 (s);
29 }
30
15 void *operator new [] (size_t s); 31 void *operator new[] (size_t s)
32 {
33 return g_slice_alloc0 (s);
34 }
35
16 void operator delete (void *p, size_t s); 36 void operator delete (void *p, size_t s)
37 {
38 g_slice_free1 (s, p);
39 }
40
17 void operator delete [] (void *p, size_t s); 41 void operator delete[] (void *p, size_t s)
42 {
43 g_slice_free1 (s, p);
44 }
18}; 45};
19 46
20struct refcounted 47void *salloc_ (int n) throw (std::bad_alloc);
48void *salloc_ (int n, void *src) throw (std::bad_alloc);
49
50// strictly the same as g_slice_alloc, but never returns 0
51template<typename T>
52inline T *salloc (int n = 1) throw (std::bad_alloc) { return (T *)salloc_ (n * sizeof (T)); }
53
54// also copies src into the new area, like "memdup"
55// if src is 0, clears the memory
56template<typename T>
57inline T *salloc (int n, T *src) throw (std::bad_alloc) { return (T *)salloc_ (n * sizeof (T), (void *)src); }
58
59// clears the memory
60template<typename T>
61inline T *salloc0(int n = 1) throw (std::bad_alloc) { return (T *)salloc_ (n * sizeof (T), 0); }
62
63// for symmetry
64template<typename T>
65inline void sfree (T *ptr, int n = 1) throw ()
21{ 66{
22 mutable int refcnt; 67 g_slice_free1 (n * sizeof (T), (void *)ptr);
23 refcounted () : refcnt (0) { } 68}
24 void refcnt_inc () { ++refcnt; } 69
25 void refcnt_dec () { --refcnt; 70// a STL-compatible allocator that uses g_slice
26 if (refcnt < 0)abort();}//D 71// boy, this is verbose
72template<typename Tp>
73struct slice_allocator
74{
75 typedef size_t size_type;
76 typedef ptrdiff_t difference_type;
77 typedef Tp *pointer;
78 typedef const Tp *const_pointer;
79 typedef Tp &reference;
80 typedef const Tp &const_reference;
81 typedef Tp value_type;
82
83 template <class U>
84 struct rebind
85 {
86 typedef slice_allocator<U> other;
87 };
88
89 slice_allocator () throw () { }
90 slice_allocator (const slice_allocator &o) throw () { }
91 template<typename Tp2>
92 slice_allocator (const slice_allocator<Tp2> &) throw () { }
93
94 ~slice_allocator () { }
95
96 pointer address (reference x) const { return &x; }
97 const_pointer address (const_reference x) const { return &x; }
98
99 pointer allocate (size_type n, const_pointer = 0)
100 {
101 return salloc<Tp> (n);
102 }
103
104 void deallocate (pointer p, size_type n)
105 {
106 sfree<Tp> (p, n);
107 }
108
109 size_type max_size ()const throw ()
110 {
111 return size_t (-1) / sizeof (Tp);
112 }
113
114 void construct (pointer p, const Tp &val)
115 {
116 ::new (p) Tp (val);
117 }
118
119 void destroy (pointer p)
120 {
121 p->~Tp ();
122 }
27}; 123};
28 124
29template<class T> 125template<class T>
30struct refptr 126struct refptr
31{ 127{
… …
54 T &operator * () const { return *p; } 150 T &operator * () const { return *p; }
55 T *operator ->() const { return p; } 151 T *operator ->() const { return p; }
56 152
57 operator T *() const { return p; } 153 operator T *() const { return p; }
58}; 154};
155
156typedef refptr<maptile> maptile_ptr;
157typedef refptr<object> object_ptr;
158typedef refptr<archetype> arch_ptr;
159typedef refptr<client> client_ptr;
160typedef refptr<player> player_ptr;
59 161
60struct str_hash 162struct str_hash
61{ 163{
62 std::size_t operator ()(const char *s) const 164 std::size_t operator ()(const char *s) const
63 { 165 {
… …
92}; 194};
93 195
94#include <vector> 196#include <vector>
95 197
96template<class obj> 198template<class obj>
97struct unordered_vector : std::vector<obj> 199struct unordered_vector : std::vector<obj, slice_allocator<obj> >
98{ 200{
99 typedef typename std::vector<obj>::iterator iterator; 201 typedef typename unordered_vector::iterator iterator;
100 202
101 void erase (unsigned int pos) 203 void erase (unsigned int pos)
102 { 204 {
103 if (pos < this->size () - 1) 205 if (pos < this->size () - 1)
104 (*this)[pos] = (*this)[this->size () - 1]; 206 (*this)[pos] = (*this)[this->size () - 1];
… …
116template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; } 218template<typename T, typename U> static inline T max (T a, U b) { return a > (T)b ? a : (T)b; }
117template<typename T, typename U, typename V> static inline T clamp (T v, U a, V b) { return v < (T)a ? a : v >(T)b ? b : v; } 219template<typename T, typename U, typename V> static inline T clamp (T v, U a, V b) { return v < (T)a ? a : v >(T)b ? b : v; }
118 220
119template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; } 221template<typename T, typename U> static inline void swap (T& a, U& b) { T t=a; a=(T)b; b=(U)t; }
120 222
121// basically does what strncpy should do 223// basically does what strncpy should do, but appends "..." to strings exceeding length
224void assign (char *dst, const char *src, int maxlen);
225
226// type-safe version of assign
122template<int N> 227template<int N>
123inline void assign (char (&dst)[N], const char *src) 228inline void assign (char (&dst)[N], const char *src)
124{ 229{
125 // should be optimised at some point, maybe should also add "..." 230 assign ((char *)&dst, src, N);
126 // when buffer is too small.
127 snprintf (dst, N, "%s", src);
128} 231}
129 232
233typedef double tstamp;
234
235// return current time as timestampe
236tstamp now ();
237
130#endif 238#endif
131 239

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