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Comparing libev/ev++.h (file contents):
Revision 1.7 by root, Sat Nov 24 09:48:37 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,
… …
50 READ = EV_READ, 110 READ = EV_READ,
51 WRITE = EV_WRITE, 111 WRITE = EV_WRITE,
52 TIMEOUT = EV_TIMEOUT, 112 TIMEOUT = EV_TIMEOUT,
53 PERIODIC = EV_PERIODIC, 113 PERIODIC = EV_PERIODIC,
54 SIGNAL = EV_SIGNAL, 114 SIGNAL = EV_SIGNAL,
115 CHILD = EV_CHILD,
116 STAT = EV_STAT,
55 IDLE = EV_IDLE, 117 IDLE = EV_IDLE,
56 CHECK = EV_CHECK, 118 CHECK = EV_CHECK,
57 PREPARE = EV_PREPARE, 119 PREPARE = EV_PREPARE,
58 CHILD = EV_CHILD, 120 FORK = EV_FORK,
121 EMBED = EV_EMBED,
59 ERROR = EV_ERROR, 122 ERROR = EV_ERROR,
60 }; 123 };
61 124
62 typedef ev_tstamp tstamp; 125 typedef ev_tstamp tstamp;
63 126
… …
65 { 128 {
66 return ev_now (EV_A); 129 return ev_now (EV_A);
67 } 130 }
68 131
69 #if EV_MULTIPLICITY 132 #if EV_MULTIPLICITY
70
71 #define EV_CONSTRUCT(cppstem) \
72 EV_P; \ 133 #define EV_CONSTRUCT \
73 \
74 void set (EV_P) \ 134 (EV_P = EV_DEFAULT) \
75 { \ 135 { \
76 this->EV_A = EV_A; \
77 } \
78 \ 136 set (EV_A); \
79 template<class O1, class O2> \ 137 }
80 explicit cppstem (O1 *object, void (O2::*method)(cppstem &, int), EV_P = ev_default_loop (0)) \
81 : callback<cppstem> (object, method), EV_A (EV_A)
82
83 #else 138 #else
84 139 #define EV_CONSTRUCT \
85 #define EV_CONSTRUCT(cppstem) \ 140 () \
86 template<class O1, class O2> \ 141 { \
87 explicit cppstem (O1 *object, void (O2::*method)(cppstem &, int)) \ 142 }
88 : callback<cppstem> (object, method)
89
90 #endif 143 #endif
91 144
92 /* using a template here would require quite a bit more lines, 145 /* using a template here would require quite a bit more lines,
93 * so a macro solution was chosen */ 146 * so a macro solution was chosen */
94 #define EV_BEGIN_WATCHER(cppstem,cstem) \ 147 #define EV_BEGIN_WATCHER(cppstem,cstem) \
95 \ 148 \
96 struct cppstem : ev_ ## cstem, callback<cppstem> \ 149 struct cppstem : base<ev_ ## cstem, cppstem> \
97 { \ 150 { \
98 EV_CONSTRUCT (cppstem) \
99 { \
100 ev_init (static_cast<ev_ ## cstem *>(this), thunk); \
101 } \
102 \
103 bool is_active () const \
104 { \
105 return ev_is_active (static_cast<const ev_ ## cstem *>(this)); \
106 } \
107 \
108 bool is_pending () const \
109 { \
110 return ev_is_pending (static_cast<const ev_ ## cstem *>(this)); \
111 } \
112 \
113 void start () \ 151 void start () \
114 { \ 152 { \
115 ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \ 153 ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
116 } \ 154 } \
117 \ 155 \
118 void stop () \ 156 void stop () \
119 { \ 157 { \
120 ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \ 158 ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
121 } \ 159 } \
122 \ 160 \
123 void operator ()(int events = EV_UNDEF) \
124 { \ 161 cppstem EV_CONSTRUCT \
125 return call (this, events); \
126 } \
127 \ 162 \
128 ~cppstem () \ 163 ~cppstem () \
129 { \ 164 { \
130 stop (); \ 165 stop (); \
131 } \ 166 } \
132 \ 167 \
168 using base<ev_ ## cstem, cppstem>::set; \
169 \
133 private: \ 170 private: \
134 \ 171 \
135 cppstem (const cppstem &o) \ 172 cppstem (const cppstem &o) \
136 : callback<cppstem> (this, (void (cppstem::*)(cppstem &, int))0) \
137 { /* disabled */ } \ 173 { /* disabled */ } \
138 \ 174 \
139 void operator =(const cppstem &o) { /* disabled */ } \ 175 void operator =(const cppstem &o) { /* disabled */ } \
140 \
141 static void thunk (EV_P_ struct ev_ ## cstem *w, int revents) \
142 { \
143 (*static_cast<cppstem *>(w))(revents); \
144 } \
145 \ 176 \
146 public: 177 public:
147 178
148 #define EV_END_WATCHER(cppstem,cstem) \ 179 #define EV_END_WATCHER(cppstem,cstem) \
149 }; 180 };
… …
191 { 222 {
192 ev_timer_again (EV_A_ static_cast<ev_timer *>(this)); 223 ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
193 } 224 }
194 EV_END_WATCHER (timer, timer) 225 EV_END_WATCHER (timer, timer)
195 226
196 #if EV_PERIODICS 227 #if EV_PERIODIC_ENABLE
197 EV_BEGIN_WATCHER (periodic, periodic) 228 EV_BEGIN_WATCHER (periodic, periodic)
198 void set (ev_tstamp at, ev_tstamp interval = 0.) 229 void set (ev_tstamp at, ev_tstamp interval = 0.)
199 { 230 {
200 int active = is_active (); 231 int active = is_active ();
201 if (active) stop (); 232 if (active) stop ();
… …
212 void again () 243 void again ()
213 { 244 {
214 ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this)); 245 ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
215 } 246 }
216 EV_END_WATCHER (periodic, periodic) 247 EV_END_WATCHER (periodic, periodic)
248 #endif
249
250 EV_BEGIN_WATCHER (sig, signal)
251 void set (int signum)
252 {
253 int active = is_active ();
254 if (active) stop ();
255 ev_signal_set (static_cast<ev_signal *>(this), signum);
256 if (active) start ();
257 }
258
259 void start (int signum)
260 {
261 set (signum);
262 start ();
263 }
264 EV_END_WATCHER (sig, signal)
265
266 EV_BEGIN_WATCHER (child, child)
267 void set (int pid)
268 {
269 int active = is_active ();
270 if (active) stop ();
271 ev_child_set (static_cast<ev_child *>(this), pid);
272 if (active) start ();
273 }
274
275 void start (int pid)
276 {
277 set (pid);
278 start ();
279 }
280 EV_END_WATCHER (child, child)
281
282 #if EV_STAT_ENABLE
283 EV_BEGIN_WATCHER (stat, stat)
284 void set (const char *path, ev_tstamp interval = 0.)
285 {
286 int active = is_active ();
287 if (active) stop ();
288 ev_stat_set (static_cast<ev_stat *>(this), path, interval);
289 if (active) start ();
290 }
291
292 void start (const char *path, ev_tstamp interval = 0.)
293 {
294 stop ();
295 set (path, interval);
296 start ();
297 }
298
299 void update ()
300 {
301 ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
302 }
303 EV_END_WATCHER (stat, stat)
217 #endif 304 #endif
218 305
219 EV_BEGIN_WATCHER (idle, idle) 306 EV_BEGIN_WATCHER (idle, idle)
220 void set () { } 307 void set () { }
221 EV_END_WATCHER (idle, idle) 308 EV_END_WATCHER (idle, idle)
… …
226 313
227 EV_BEGIN_WATCHER (check, check) 314 EV_BEGIN_WATCHER (check, check)
228 void set () { } 315 void set () { }
229 EV_END_WATCHER (check, check) 316 EV_END_WATCHER (check, check)
230 317
231 EV_BEGIN_WATCHER (sig, signal) 318 #if EV_EMBED_ENABLE
232 void set (int signum)
233 {
234 int active = is_active ();
235 if (active) stop ();
236 ev_signal_set (static_cast<ev_signal *>(this), signum);
237 if (active) start ();
238 }
239
240 void start (int signum)
241 {
242 set (signum);
243 start ();
244 }
245 EV_END_WATCHER (sig, signal)
246
247 EV_BEGIN_WATCHER (child, child)
248 void set (int pid)
249 {
250 int active = is_active ();
251 if (active) stop ();
252 ev_child_set (static_cast<ev_child *>(this), pid);
253 if (active) start ();
254 }
255
256 void start (int pid)
257 {
258 set (pid);
259 start ();
260 }
261 EV_END_WATCHER (child, child)
262
263 #if EV_MULTIPLICITY
264
265 EV_BEGIN_WATCHER (embed, embed) 319 EV_BEGIN_WATCHER (embed, embed)
266 void set (struct ev_loop *loop)
267 {
268 int active = is_active ();
269 if (active) stop ();
270 ev_embed_set (static_cast<ev_embed *>(this), loop);
271 if (active) start ();
272 }
273
274 void start (struct ev_loop *embedded_loop) 320 void start (struct ev_loop *embedded_loop)
275 { 321 {
276 set (embedded_loop); 322 stop ();
323 ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
277 start (); 324 start ();
278 } 325 }
279 326
280 void sweep () 327 void sweep ()
281 { 328 {
282 ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this)); 329 ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
283 } 330 }
284 EV_END_WATCHER (embed, embed) 331 EV_END_WATCHER (embed, embed)
332 #endif
285 333
334 #if EV_FORK_ENABLE
335 EV_BEGIN_WATCHER (fork, fork)
336 void set () { }
337 EV_END_WATCHER (fork, fork)
286 #endif 338 #endif
287 339
288 #undef EV_CONSTRUCT 340 #undef EV_CONSTRUCT
289 #undef EV_BEGIN_WATCHER 341 #undef EV_BEGIN_WATCHER
290 #undef EV_END_WATCHER 342 #undef EV_END_WATCHER

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