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 | |
6 | namespace ev { |
6 | namespace ev { |
7 | |
7 | |
8 | template<class watcher> |
8 | template<class watcher> |
9 | class callback |
9 | class callback |
10 | { |
10 | { |
11 | struct object { }; |
11 | struct klass; // it is vital that this is never defined |
12 | |
12 | |
13 | void *obj; |
13 | klass *o; |
14 | void (object::*meth)(watcher &, int); |
14 | void (klass::*m)(watcher &, int); |
15 | |
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16 | /* a proxy is a kind of recipe on how to call a specific class method */ |
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17 | struct proxy_base { |
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18 | virtual void call (void *obj, void (object::*meth)(watcher &, int), watcher &w, int) const = 0; |
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19 | }; |
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20 | template<class O1, class O2> |
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21 | struct proxy : proxy_base { |
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22 | virtual void call (void *obj, void (object::*meth)(watcher &, int), watcher &w, int e) const |
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23 | { |
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24 | ((reinterpret_cast<O1 *>(obj)) ->* (reinterpret_cast<void (O2::*)(watcher &, int)>(meth))) |
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25 | (w, e); |
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26 | } |
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27 | }; |
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28 | |
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29 | proxy_base *prxy; |
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30 | |
15 | |
31 | public: |
16 | public: |
32 | template<class O1, class O2> |
17 | template<class O1, class O2> |
33 | explicit callback (O1 *object, void (O2::*method)(watcher &, int)) |
18 | explicit callback (O1 *object, void (O2::*method)(watcher &, int)) |
34 | { |
19 | { |
35 | static proxy<O1,O2> p; |
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36 | obj = reinterpret_cast<void *>(object); |
20 | o = reinterpret_cast<klass *>(object); |
37 | meth = reinterpret_cast<void (object::*)(watcher &, int)>(method); |
21 | m = reinterpret_cast<void (klass::*)(watcher &, int)>(method); |
38 | prxy = &p; |
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39 | } |
22 | } |
40 | |
23 | |
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24 | // this works because a standards-compliant C++ compiler |
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25 | // basically can't help it: it doesn't have the knowledge |
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26 | // required to miscompile (klass is not defined anywhere |
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27 | // and nothing is known about the constructor arguments) :) |
41 | void call (watcher *w, int e) const |
28 | void call (watcher *w, int revents) |
42 | { |
29 | { |
43 | return prxy->call (obj, meth, *w, e); |
30 | (o->*m) (*w, revents); |
44 | } |
31 | } |
45 | }; |
32 | }; |
46 | |
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47 | #include "ev.h" |
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48 | |
33 | |
49 | enum { |
34 | enum { |
50 | UNDEF = EV_UNDEF, |
35 | UNDEF = EV_UNDEF, |
51 | NONE = EV_NONE, |
36 | NONE = EV_NONE, |
52 | READ = EV_READ, |
37 | READ = EV_READ, |
53 | WRITE = EV_WRITE, |
38 | WRITE = EV_WRITE, |
54 | TIMEOUT = EV_TIMEOUT, |
39 | TIMEOUT = EV_TIMEOUT, |
55 | PERIODIC = EV_PERIODIC, |
40 | PERIODIC = EV_PERIODIC, |
56 | SIGNAL = EV_SIGNAL, |
41 | SIGNAL = EV_SIGNAL, |
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42 | CHILD = EV_CHILD, |
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43 | STAT = EV_STAT, |
57 | IDLE = EV_IDLE, |
44 | IDLE = EV_IDLE, |
58 | CHECK = EV_CHECK, |
45 | CHECK = EV_CHECK, |
59 | PREPARE = EV_PREPARE, |
46 | PREPARE = EV_PREPARE, |
60 | CHILD = EV_CHILD, |
47 | FORK = EV_FORK, |
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48 | EMBED = EV_EMBED, |
61 | ERROR = EV_ERROR, |
49 | ERROR = EV_ERROR, |
62 | }; |
50 | }; |
63 | |
51 | |
64 | typedef ev_tstamp tstamp; |
52 | typedef ev_tstamp tstamp; |
65 | |
53 | |
… | |
… | |
193 | { |
181 | { |
194 | ev_timer_again (EV_A_ static_cast<ev_timer *>(this)); |
182 | ev_timer_again (EV_A_ static_cast<ev_timer *>(this)); |
195 | } |
183 | } |
196 | EV_END_WATCHER (timer, timer) |
184 | EV_END_WATCHER (timer, timer) |
197 | |
185 | |
198 | #if EV_PERIODICS |
186 | #if EV_PERIODIC_ENABLE |
199 | EV_BEGIN_WATCHER (periodic, periodic) |
187 | EV_BEGIN_WATCHER (periodic, periodic) |
200 | void set (ev_tstamp at, ev_tstamp interval = 0.) |
188 | void set (ev_tstamp at, ev_tstamp interval = 0.) |
201 | { |
189 | { |
202 | int active = is_active (); |
190 | int active = is_active (); |
203 | if (active) stop (); |
191 | if (active) stop (); |
… | |
… | |
216 | ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this)); |
204 | ev_periodic_again (EV_A_ static_cast<ev_periodic *>(this)); |
217 | } |
205 | } |
218 | EV_END_WATCHER (periodic, periodic) |
206 | EV_END_WATCHER (periodic, periodic) |
219 | #endif |
207 | #endif |
220 | |
208 | |
221 | EV_BEGIN_WATCHER (idle, idle) |
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222 | EV_END_WATCHER (idle, idle) |
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223 | |
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224 | EV_BEGIN_WATCHER (prepare, prepare) |
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225 | EV_END_WATCHER (prepare, prepare) |
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226 | |
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227 | EV_BEGIN_WATCHER (check, check) |
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228 | EV_END_WATCHER (check, check) |
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229 | |
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230 | EV_BEGIN_WATCHER (sig, signal) |
209 | EV_BEGIN_WATCHER (sig, signal) |
231 | void set (int signum) |
210 | void set (int signum) |
232 | { |
211 | { |
233 | int active = is_active (); |
212 | int active = is_active (); |
234 | if (active) stop (); |
213 | if (active) stop (); |
… | |
… | |
257 | set (pid); |
236 | set (pid); |
258 | start (); |
237 | start (); |
259 | } |
238 | } |
260 | EV_END_WATCHER (child, child) |
239 | EV_END_WATCHER (child, child) |
261 | |
240 | |
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241 | #if EV_STAT_ENABLE |
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242 | EV_BEGIN_WATCHER (stat, stat) |
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243 | void set (const char *path, ev_tstamp interval = 0.) |
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244 | { |
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245 | int active = is_active (); |
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246 | if (active) stop (); |
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247 | ev_stat_set (static_cast<ev_stat *>(this), path, interval); |
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248 | if (active) start (); |
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249 | } |
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250 | |
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251 | void start (const char *path, ev_tstamp interval = 0.) |
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252 | { |
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253 | set (path, interval); |
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254 | start (); |
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255 | } |
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256 | |
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257 | void update () |
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258 | { |
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259 | ev_stat_stat (EV_A_ static_cast<ev_stat *>(this)); |
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260 | } |
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261 | EV_END_WATCHER (stat, stat) |
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262 | #endif |
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263 | |
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264 | EV_BEGIN_WATCHER (idle, idle) |
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265 | void set () { } |
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266 | EV_END_WATCHER (idle, idle) |
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267 | |
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268 | EV_BEGIN_WATCHER (prepare, prepare) |
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269 | void set () { } |
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270 | EV_END_WATCHER (prepare, prepare) |
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271 | |
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272 | EV_BEGIN_WATCHER (check, check) |
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273 | void set () { } |
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274 | EV_END_WATCHER (check, check) |
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275 | |
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276 | #if EV_EMBED_ENABLE |
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277 | EV_BEGIN_WATCHER (embed, embed) |
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278 | void set (struct ev_loop *loop) |
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279 | { |
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280 | int active = is_active (); |
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281 | if (active) stop (); |
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282 | ev_embed_set (static_cast<ev_embed *>(this), loop); |
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283 | if (active) start (); |
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284 | } |
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285 | |
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286 | void start (struct ev_loop *embedded_loop) |
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287 | { |
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288 | set (embedded_loop); |
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289 | start (); |
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290 | } |
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291 | |
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292 | void sweep () |
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293 | { |
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294 | ev_embed_sweep (EV_A_ static_cast<ev_embed *>(this)); |
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295 | } |
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296 | EV_END_WATCHER (embed, embed) |
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297 | #endif |
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298 | |
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299 | #if EV_FORK_ENABLE |
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300 | EV_BEGIN_WATCHER (fork, fork) |
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301 | void set () { } |
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302 | EV_END_WATCHER (fork, fork) |
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303 | #endif |
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304 | |
262 | #undef EV_CONSTRUCT |
305 | #undef EV_CONSTRUCT |
263 | #undef EV_BEGIN_WATCHER |
306 | #undef EV_BEGIN_WATCHER |
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307 | #undef EV_END_WATCHER |
264 | } |
308 | } |
265 | |
309 | |
266 | #endif |
310 | #endif |
267 | |
311 | |