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Comparing libev/ev++.h (file contents):
Revision 1.6 by root, Wed Nov 14 06:08:13 2007 UTC vs.
Revision 1.19 by root, Fri Dec 14 17:47:52 2007 UTC

1#ifndef EVPP_H__ 1#ifndef EVPP_H__
2#define EVPP_H__ 2#define EVPP_H__
3 3
4/* work in progress, don't use unless you know what you are doing */ 4#include "ev.h"
5 5
6namespace ev { 6namespace ev {
7 7
8 template<class watcher> 8 template<class ev_watcher, class watcher>
9 class callback 9 struct base : ev_watcher
10 { 10 {
11 struct object { }; 11 #if EV_MULTIPLICITY
12 EV_P;
12 13
13 void *obj; 14 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 { 15 {
24 ((reinterpret_cast<O1 *>(obj)) ->* (reinterpret_cast<void (O2::*)(watcher &, int)>(meth))) 16 this->EV_A = EV_A;
25 (w, e);
26 } 17 }
18 #endif
19
20 base ()
21 {
22 ev_init (this, 0);
27 }; 23 }
28 24
29 proxy_base *prxy; 25 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 } 26 {
40 27 this->data = data;
41 void call (watcher *w, int e) const 28 ev_set_cb (static_cast<ev_watcher *>(this), cb);
42 { 29 }
43 return prxy->call (obj, meth, *w, e); 30
31 // method callback
32 template<class K, void (K::*method)(watcher &w, int)>
33 void set (K *object)
34 {
35 set_ (object, method_thunk<K, method>);
36 }
37
38 template<class K, void (K::*method)(watcher &w, int)>
39 static void method_thunk (EV_P_ ev_watcher *w, int revents)
40 {
41 K *obj = static_cast<K *>(w->data);
42 (obj->*method) (*static_cast<watcher *>(w), revents);
43 }
44
45 // const method callback
46 template<class K, void (K::*method)(watcher &w, int) const>
47 void set (const K *object)
48 {
49 set_ (object, const_method_thunk<K, method>);
50 }
51
52 template<class K, void (K::*method)(watcher &w, int) const>
53 static void const_method_thunk (EV_P_ ev_watcher *w, int revents)
54 {
55 K *obj = static_cast<K *>(w->data);
56 (static_cast<K *>(w->data)->*method) (*static_cast<watcher *>(w), revents);
57 }
58
59 // function callback
60 template<void (*function)(watcher &w, int)>
61 void set (void *data = 0)
62 {
63 set_ (data, function_thunk<function>);
64 }
65
66 template<void (*function)(watcher &w, int)>
67 static void function_thunk (EV_P_ ev_watcher *w, int revents)
68 {
69 function (*static_cast<watcher *>(w), revents);
70 }
71
72 // simple callback
73 template<class K, void (K::*method)()>
74 void set (K *object)
75 {
76 set_ (object, method_noargs_thunk<K, method>);
77 }
78
79 template<class K, void (K::*method)()>
80 static void method_noargs_thunk (EV_P_ ev_watcher *w, int revents)
81 {
82 K *obj = static_cast<K *>(w->data);
83 (obj->*method) ();
84 }
85
86 void operator ()(int events = EV_UNDEF)
87 {
88 return ev_cb (static_cast<ev_watcher *>(this))
89 (static_cast<ev_watcher *>(this), events);
90 }
91
92 bool is_active () const
93 {
94 return ev_is_active (static_cast<const ev_watcher *>(this));
95 }
96
97 bool is_pending () const
98 {
99 return ev_is_pending (static_cast<const ev_watcher *>(this));
44 } 100 }
45 }; 101 };
46
47 #include "ev.h"
48 102
49 enum { 103 enum {
50 UNDEF = EV_UNDEF, 104 UNDEF = EV_UNDEF,
51 NONE = EV_NONE, 105 NONE = EV_NONE,
52 READ = EV_READ, 106 READ = EV_READ,
53 WRITE = EV_WRITE, 107 WRITE = EV_WRITE,
54 TIMEOUT = EV_TIMEOUT, 108 TIMEOUT = EV_TIMEOUT,
55 PERIODIC = EV_PERIODIC, 109 PERIODIC = EV_PERIODIC,
56 SIGNAL = EV_SIGNAL, 110 SIGNAL = EV_SIGNAL,
111 CHILD = EV_CHILD,
112 STAT = EV_STAT,
57 IDLE = EV_IDLE, 113 IDLE = EV_IDLE,
58 CHECK = EV_CHECK, 114 CHECK = EV_CHECK,
59 PREPARE = EV_PREPARE, 115 PREPARE = EV_PREPARE,
60 CHILD = EV_CHILD, 116 FORK = EV_FORK,
117 EMBED = EV_EMBED,
61 ERROR = EV_ERROR, 118 ERROR = EV_ERROR,
62 }; 119 };
63 120
64 typedef ev_tstamp tstamp; 121 typedef ev_tstamp tstamp;
65 122
… …
67 { 124 {
68 return ev_now (EV_A); 125 return ev_now (EV_A);
69 } 126 }
70 127
71 #if EV_MULTIPLICITY 128 #if EV_MULTIPLICITY
72
73 #define EV_CONSTRUCT(cppstem) \
74 EV_P; \ 129 #define EV_CONSTRUCT \
75 \
76 void set (EV_P) \ 130 (EV_P = EV_DEFAULT) \
77 { \ 131 { \
78 this->EV_A = EV_A; \
79 } \
80 \ 132 set (EV_A); \
81 template<class O1, class O2> \ 133 }
82 explicit cppstem (O1 *object, void (O2::*method)(cppstem &, int), EV_P = ev_default_loop (0)) \
83 : callback<cppstem> (object, method), EV_A (EV_A)
84
85 #else 134 #else
86 135 #define EV_CONSTRUCT \
87 #define EV_CONSTRUCT(cppstem) \ 136 () \
88 template<class O1, class O2> \ 137 { \
89 explicit cppstem (O1 *object, void (O2::*method)(cppstem &, int)) \ 138 }
90 : callback<cppstem> (object, method)
91
92 #endif 139 #endif
93 140
94 /* using a template here would require quite a bit more lines, 141 /* using a template here would require quite a bit more lines,
95 * so a macro solution was chosen */ 142 * so a macro solution was chosen */
96 #define EV_BEGIN_WATCHER(cppstem,cstem) \ 143 #define EV_BEGIN_WATCHER(cppstem,cstem) \
97 \ 144 \
98 struct cppstem : ev_ ## cstem, callback<cppstem> \ 145 struct cppstem : base<ev_ ## cstem, cppstem> \
99 { \ 146 { \
100 EV_CONSTRUCT (cppstem) \
101 { \
102 ev_init (static_cast<ev_ ## cstem *>(this), thunk); \
103 } \
104 \
105 bool is_active () const \
106 { \
107 return ev_is_active (static_cast<const ev_ ## cstem *>(this)); \
108 } \
109 \
110 bool is_pending () const \
111 { \
112 return ev_is_pending (static_cast<const ev_ ## cstem *>(this)); \
113 } \
114 \
115 void start () \ 147 void start () \
116 { \ 148 { \
117 ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \ 149 ev_ ## cstem ## _start (EV_A_ static_cast<ev_ ## cstem *>(this)); \
118 } \ 150 } \
119 \ 151 \
120 void stop () \ 152 void stop () \
121 { \ 153 { \
122 ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \ 154 ev_ ## cstem ## _stop (EV_A_ static_cast<ev_ ## cstem *>(this)); \
123 } \ 155 } \
124 \ 156 \
125 void operator ()(int events = EV_UNDEF) \
126 { \ 157 cppstem EV_CONSTRUCT \
127 return call (this, events); \
128 } \
129 \ 158 \
130 ~cppstem () \ 159 ~cppstem () \
131 { \ 160 { \
132 stop (); \ 161 stop (); \
133 } \ 162 } \
134 \ 163 \
164 using base<ev_ ## cstem, cppstem>::set; \
165 \
135 private: \ 166 private: \
136 \ 167 \
137 cppstem (const cppstem &o) \ 168 cppstem (const cppstem &o) \
138 : callback<cppstem> (this, (void (cppstem::*)(cppstem &, int))0) \
139 { /* disabled */ } \ 169 { /* disabled */ } \
140 \ 170 \
141 void operator =(const cppstem &o) { /* disabled */ } \ 171 void operator =(const cppstem &o) { /* disabled */ } \
142 \
143 static void thunk (EV_P_ struct ev_ ## cstem *w, int revents) \
144 { \
145 (*static_cast<cppstem *>(w))(revents); \
146 } \
147 \ 172 \
148 public: 173 public:
149 174
150 #define EV_END_WATCHER(cppstem,cstem) \ 175 #define EV_END_WATCHER(cppstem,cstem) \
151 }; 176 };
… …
193 { 218 {
194 ev_timer_again (EV_A_ static_cast<ev_timer *>(this)); 219 ev_timer_again (EV_A_ static_cast<ev_timer *>(this));
195 } 220 }
196 EV_END_WATCHER (timer, timer) 221 EV_END_WATCHER (timer, timer)
197 222
198 #if EV_PERIODICS 223 #if EV_PERIODIC_ENABLE
199 EV_BEGIN_WATCHER (periodic, periodic) 224 EV_BEGIN_WATCHER (periodic, periodic)
200 void set (ev_tstamp at, ev_tstamp interval = 0.) 225 void set (ev_tstamp at, ev_tstamp interval = 0.)
201 { 226 {
202 int active = is_active (); 227 int active = is_active ();
203 if (active) stop (); 228 if (active) stop ();
… …
216 ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this)); 241 ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this));
217 } 242 }
218 EV_END_WATCHER (periodic, periodic) 243 EV_END_WATCHER (periodic, periodic)
219 #endif 244 #endif
220 245
221 EV_BEGIN_WATCHER (idle, idle)
222 EV_END_WATCHER (idle, idle)
223
224 EV_BEGIN_WATCHER (prepare, prepare)
225 EV_END_WATCHER (prepare, prepare)
226
227 EV_BEGIN_WATCHER (check, check)
228 EV_END_WATCHER (check, check)
229
230 EV_BEGIN_WATCHER (sig, signal) 246 EV_BEGIN_WATCHER (sig, signal)
231 void set (int signum) 247 void set (int signum)
232 { 248 {
233 int active = is_active (); 249 int active = is_active ();
234 if (active) stop (); 250 if (active) stop ();
… …
257 set (pid); 273 set (pid);
258 start (); 274 start ();
259 } 275 }
260 EV_END_WATCHER (child, child) 276 EV_END_WATCHER (child, child)
261 277
278 #if EV_STAT_ENABLE
279 EV_BEGIN_WATCHER (stat, stat)
280 void set (const char *path, ev_tstamp interval = 0.)
281 {
282 int active = is_active ();
283 if (active) stop ();
284 ev_stat_set (static_cast<ev_stat *>(this), path, interval);
285 if (active) start ();
286 }
287
288 void start (const char *path, ev_tstamp interval = 0.)
289 {
290 stop ();
291 set (path, interval);
292 start ();
293 }
294
295 void update ()
296 {
297 ev_stat_stat (EV_A_ static_cast<ev_stat *>(this));
298 }
299 EV_END_WATCHER (stat, stat)
300 #endif
301
302 EV_BEGIN_WATCHER (idle, idle)
303 void set () { }
304 EV_END_WATCHER (idle, idle)
305
306 EV_BEGIN_WATCHER (prepare, prepare)
307 void set () { }
308 EV_END_WATCHER (prepare, prepare)
309
310 EV_BEGIN_WATCHER (check, check)
311 void set () { }
312 EV_END_WATCHER (check, check)
313
314 #if EV_EMBED_ENABLE
315 EV_BEGIN_WATCHER (embed, embed)
316 void start (struct ev_loop *embedded_loop)
317 {
318 stop ();
319 ev_embed_set (static_cast<ev_embed *>(this), embedded_loop);
320 start ();
321 }
322
323 void sweep ()
324 {
325 ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this));
326 }
327 EV_END_WATCHER (embed, embed)
328 #endif
329
330 #if EV_FORK_ENABLE
331 EV_BEGIN_WATCHER (fork, fork)
332 void set () { }
333 EV_END_WATCHER (fork, fork)
334 #endif
335
262 #undef EV_CONSTRUCT 336 #undef EV_CONSTRUCT
263 #undef EV_BEGIN_WATCHER 337 #undef EV_BEGIN_WATCHER
338 #undef EV_END_WATCHER
264} 339}
265 340
266#endif 341#endif
267 342

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