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Comparing libev/ev++.h (file contents):
Revision 1.10 by root, Tue Nov 27 11:06:03 2007 UTC vs.
Revision 1.20 by root, Thu Dec 20 08:17:57 2007 UTC

1#ifndef EVPP_H__ 1#ifndef EVPP_H__
2#define EVPP_H__ 2#define EVPP_H__
3 3
4#ifdef EV_H
5# include EV_H
6#else
4#include "ev.h" 7# include <ev.h>
8#endif
5 9
6namespace ev { 10namespace ev {
7 11
8 template<class watcher> 12 template<class ev_watcher, class watcher>
9 class callback 13 struct base : ev_watcher
10 { 14 {
11 struct object { }; 15 #if EV_MULTIPLICITY
16 EV_P;
12 17
13 void *obj; 18 void set (EV_P)
14 void (object::*meth)(watcher &, int);
15
16 /* a proxy is a kind of recipe on how to call a specific class method */
17 struct proxy_base {
18 virtual void call (void *obj, void (object::*meth)(watcher &, int), watcher &w, int) const = 0;
19 };
20 template<class O1, class O2>
21 struct proxy : proxy_base {
22 virtual void call (void *obj, void (object::*meth)(watcher &, int), watcher &w, int e) const
23 { 19 {
24 ((reinterpret_cast<O1 *>(obj)) ->* (reinterpret_cast<void (O2::*)(watcher &, int)>(meth))) 20 this->EV_A = EV_A;
25 (w, e);
26 } 21 }
22 #endif
23
24 base ()
25 {
26 ev_init (this, 0);
27 }; 27 }
28 28
29 proxy_base *prxy; 29 void set_ (void *data, void (*cb)(EV_P_ ev_watcher *w, int revents))
30
31 public:
32 template<class O1, class O2>
33 explicit callback (O1 *object, void (O2::*method)(watcher &, int))
34 {
35 static proxy<O1,O2> p;
36 obj = reinterpret_cast<void *>(object);
37 meth = reinterpret_cast<void (object::*)(watcher &, int)>(method);
38 prxy = &p;
39 } 30 {
40 31 this->data = data;
41 void call (watcher *w, int e) const 32 ev_set_cb (static_cast<ev_watcher *>(this), cb);
42 { 33 }
43 return prxy->call (obj, meth, *w, e); 34
35 // method callback
36 template<class K, void (K::*method)(watcher &w, int)>
37 void set (K *object)
38 {
39 set_ (object, method_thunk<K, method>);
40 }
41
42 template<class K, void (K::*method)(watcher &w, int)>
43 static void method_thunk (EV_P_ ev_watcher *w, int revents)
44 {
45 K *obj = static_cast<K *>(w->data);
46 (obj->*method) (*static_cast<watcher *>(w), revents);
47 }
48
49 // const method callback
50 template<class K, void (K::*method)(watcher &w, int) const>
51 void set (const K *object)
52 {
53 set_ (object, const_method_thunk<K, method>);
54 }
55
56 template<class K, void (K::*method)(watcher &w, int) const>
57 static void const_method_thunk (EV_P_ ev_watcher *w, int revents)
58 {
59 K *obj = static_cast<K *>(w->data);
60 (static_cast<K *>(w->data)->*method) (*static_cast<watcher *>(w), revents);
61 }
62
63 // function callback
64 template<void (*function)(watcher &w, int)>
65 void set (void *data = 0)
66 {
67 set_ (data, function_thunk<function>);
68 }
69
70 template<void (*function)(watcher &w, int)>
71 static void function_thunk (EV_P_ ev_watcher *w, int revents)
72 {
73 function (*static_cast<watcher *>(w), revents);
74 }
75
76 // simple callback
77 template<class K, void (K::*method)()>
78 void set (K *object)
79 {
80 set_ (object, method_noargs_thunk<K, method>);
81 }
82
83 template<class K, void (K::*method)()>
84 static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents)
85 {
86 K *obj = static_cast<K *>(w->data);
87 (obj->*method) ();
88 }
89
90 void operator ()(int events = EV_UNDEF)
91 {
92 return ev_cb (static_cast<ev_watcher *>(this))
93 (static_cast<ev_watcher *>(this), events);
94 }
95
96 bool is_active () const
97 {
98 return ev_is_active (static_cast<const ev_watcher *>(this));
99 }
100
101 bool is_pending () const
102 {
103 return ev_is_pending (static_cast<const ev_watcher *>(this));
44 } 104 }
45 }; 105 };
46 106
47 enum { 107 enum {
48 UNDEF = EV_UNDEF, 108 UNDEF = EV_UNDEF,
… …
68 { 128 {
69 return ev_now (EV_A); 129 return ev_now (EV_A);
70 } 130 }
71 131
72 #if EV_MULTIPLICITY 132 #if EV_MULTIPLICITY
73
74 #define EV_CONSTRUCT(cppstem) \
75 EV_P; \ 133 #define EV_CONSTRUCT \
76 \
77 void set (EV_P) \ 134 (EV_P = EV_DEFAULT) \
78 { \ 135 { \
79 this->EV_A = EV_A; \
80 } \
81 \ 136 set (EV_A); \
82 template<class O1, class O2> \ 137 }
83 explicit cppstem (O1 *object, void (O2::*method)(cppstem &, int), EV_P = ev_default_loop (0)) \
84 : callback<cppstem> (object, method), EV_A (EV_A)
85
86 #else 138 #else
87 139 #define EV_CONSTRUCT \
88 #define EV_CONSTRUCT(cppstem) \ 140 () \
89 template<class O1, class O2> \ 141 { \
90 explicit cppstem (O1 *object, void (O2::*method)(cppstem &, int)) \ 142 }
91 : callback<cppstem> (object, method)
92
93 #endif 143 #endif
94 144
95 /* using a template here would require quite a bit more lines, 145 /* using a template here would require quite a bit more lines,
96 * so a macro solution was chosen */ 146 * so a macro solution was chosen */
97 #define EV_BEGIN_WATCHER(cppstem,cstem) \ 147 #define EV_BEGIN_WATCHER(cppstem,cstem) \
98 \ 148 \
99 struct cppstem : ev_ ## cstem, callback<cppstem> \ 149 struct cppstem : base<ev_ ## cstem, cppstem> \
100 { \ 150 { \
101 EV_CONSTRUCT (cppstem) \
102 { \
103 ev_init (static_cast<ev_ ## cstem *>(this), thunk); \
104 } \
105 \
106 bool is_active () const \
107 { \
108 return ev_is_active (static_cast<const ev_ ## cstem *>(this)); \
109 } \
110 \
111 bool is_pending () const \
112 { \
113 return ev_is_pending (static_cast<const ev_ ## cstem *>(this)); \
114 } \
115 \
116 void start () \ 151 void start () \
117 { \ 152 { \
118 ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \ 153 ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
119 } \ 154 } \
120 \ 155 \
121 void stop () \ 156 void stop () \
122 { \ 157 { \
123 ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \ 158 ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
124 } \ 159 } \
125 \ 160 \
126 void operator ()(int events = EV_UNDEF) \
127 { \ 161 cppstem EV_CONSTRUCT \
128 return call (this, events); \
129 } \
130 \ 162 \
131 ~cppstem () \ 163 ~cppstem () \
132 { \ 164 { \
133 stop (); \ 165 stop (); \
134 } \ 166 } \
135 \ 167 \
168 using base<ev_ ## cstem, cppstem>::set; \
169 \
136 private: \ 170 private: \
137 \ 171 \
138 cppstem (const cppstem &o) \ 172 cppstem (const cppstem &o) \
139 : callback<cppstem> (this, (void (cppstem::*)(cppstem &, int))0) \
140 { /* disabled */ } \ 173 { /* disabled */ } \
141 \ 174 \
142 void operator =(const cppstem &o) { /* disabled */ } \ 175 void operator =(const cppstem &o) { /* disabled */ } \
143 \
144 static void thunk (EV_P_ struct ev_ ## cstem *w, int revents) \
145 { \
146 (*static_cast<cppstem *>(w))(revents); \
147 } \
148 \ 176 \
149 public: 177 public:
150 178
151 #define EV_END_WATCHER(cppstem,cstem) \ 179 #define EV_END_WATCHER(cppstem,cstem) \
152 }; 180 };
… …
261 if (active) start (); 289 if (active) start ();
262 } 290 }
263 291
264 void start (const char *path, ev_tstamp interval = 0.) 292 void start (const char *path, ev_tstamp interval = 0.)
265 { 293 {
294 stop ();
266 set (path, interval); 295 set (path, interval);
267 start (); 296 start ();
268 } 297 }
269 298
270 void update () 299 void update ()
… …
286 void set () { } 315 void set () { }
287 EV_END_WATCHER (check, check) 316 EV_END_WATCHER (check, check)
288 317
289 #if EV_EMBED_ENABLE 318 #if EV_EMBED_ENABLE
290 EV_BEGIN_WATCHER (embed, embed) 319 EV_BEGIN_WATCHER (embed, embed)
291 void set (struct ev_loop *loop)
292 {
293 int active = is_active ();
294 if (active) stop ();
295 ev_embed_set (static_cast<ev_embed *>(this), loop);
296 if (active) start ();
297 }
298
299 void start (struct ev_loop *embedded_loop) 320 void start (struct ev_loop *embedded_loop)
300 { 321 {
301 set (embedded_loop); 322 stop ();
323 ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
302 start (); 324 start ();
303 } 325 }
304 326
305 void sweep () 327 void sweep ()
306 { 328 {

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