… | |
… | |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
28 | */ |
29 | |
29 | |
30 | #ifndef EV_H |
30 | #ifndef EV_H__ |
31 | #define EV_H |
31 | #define EV_H__ |
32 | |
32 | |
33 | #ifdef __cplusplus |
33 | #ifdef __cplusplus |
34 | extern "C" { |
34 | extern "C" { |
35 | #endif |
35 | #endif |
36 | |
36 | |
… | |
… | |
85 | #endif |
85 | #endif |
86 | |
86 | |
87 | #define EV_VERSION_MAJOR 1 |
87 | #define EV_VERSION_MAJOR 1 |
88 | #define EV_VERSION_MINOR 1 |
88 | #define EV_VERSION_MINOR 1 |
89 | |
89 | |
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90 | #ifndef EV_CB_DECLARE |
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91 | # define EV_CB_DECLARE(type) void (*cb)(EV_P_ struct type *w, int revents); |
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92 | #endif |
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93 | #ifndef EV_CB_INVOKE |
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94 | # define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents)) |
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95 | #endif |
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96 | |
90 | /* |
97 | /* |
91 | * struct member types: |
98 | * struct member types: |
92 | * private: you can look at them, but not change them, and they might not mean anything to you. |
99 | * private: you can look at them, but not change them, and they might not mean anything to you. |
93 | * ro: can be read anytime, but only changed when the watcher isn't active |
100 | * ro: can be read anytime, but only changed when the watcher isn't active |
94 | * rw: can be read and modified anytime, even when the watcher is active |
101 | * rw: can be read and modified anytime, even when the watcher is active |
… | |
… | |
96 | |
103 | |
97 | /* shared by all watchers */ |
104 | /* shared by all watchers */ |
98 | #define EV_WATCHER(type) \ |
105 | #define EV_WATCHER(type) \ |
99 | int active; /* private */ \ |
106 | int active; /* private */ \ |
100 | int pending; /* private */ \ |
107 | int pending; /* private */ \ |
101 | int priority; /* ro */ \ |
108 | int priority; /* private */ \ |
102 | EV_COMMON; /* rw */ \ |
109 | EV_COMMON; /* rw */ \ |
103 | void (*cb)(EV_P_ struct type *, int revents); /* rw */ /* gets invoked with an eventmask */ |
110 | EV_CB_DECLARE (type) /* private */ |
104 | |
111 | |
105 | #define EV_WATCHER_LIST(type) \ |
112 | #define EV_WATCHER_LIST(type) \ |
106 | EV_WATCHER (type); \ |
113 | EV_WATCHER (type); \ |
107 | struct ev_watcher_list *next /* private */ |
114 | struct ev_watcher_list *next /* private */ |
108 | |
115 | |
109 | #define EV_WATCHER_TIME(type) \ |
116 | #define EV_WATCHER_TIME(type) \ |
110 | EV_WATCHER (type); \ |
117 | EV_WATCHER (type); \ |
111 | ev_tstamp at /* private */ |
118 | ev_tstamp at /* private */ |
112 | |
119 | |
113 | /* base class, nothing to see here unless you subclass */ |
120 | /* base class, nothing to see here unless you subclass */ |
114 | struct ev_watcher { |
121 | struct ev_watcher |
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122 | { |
115 | EV_WATCHER (ev_watcher); |
123 | EV_WATCHER (ev_watcher); |
116 | }; |
124 | }; |
117 | |
125 | |
118 | /* base class, nothing to see here unless you subclass */ |
126 | /* base class, nothing to see here unless you subclass */ |
119 | struct ev_watcher_list { |
127 | struct ev_watcher_list |
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128 | { |
120 | EV_WATCHER_LIST (ev_watcher_list); |
129 | EV_WATCHER_LIST (ev_watcher_list); |
121 | }; |
130 | }; |
122 | |
131 | |
123 | /* base class, nothing to see here unless you subclass */ |
132 | /* base class, nothing to see here unless you subclass */ |
124 | struct ev_watcher_time { |
133 | struct ev_watcher_time |
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134 | { |
125 | EV_WATCHER_TIME (ev_watcher_time); |
135 | EV_WATCHER_TIME (ev_watcher_time); |
126 | }; |
136 | }; |
127 | |
137 | |
128 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
138 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
129 | /* revent EV_TIMEOUT */ |
139 | /* revent EV_TIMEOUT */ |
… | |
… | |
139 | struct ev_periodic |
149 | struct ev_periodic |
140 | { |
150 | { |
141 | EV_WATCHER_TIME (ev_periodic); |
151 | EV_WATCHER_TIME (ev_periodic); |
142 | |
152 | |
143 | ev_tstamp interval; /* rw */ |
153 | ev_tstamp interval; /* rw */ |
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154 | ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ |
144 | }; |
155 | }; |
145 | |
156 | |
146 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
157 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
147 | /* revent EV_READ, EV_WRITE */ |
158 | /* revent EV_READ, EV_WRITE */ |
148 | struct ev_io |
159 | struct ev_io |
… | |
… | |
156 | /* invoked when the given signal has been received */ |
167 | /* invoked when the given signal has been received */ |
157 | /* revent EV_SIGNAL */ |
168 | /* revent EV_SIGNAL */ |
158 | struct ev_signal |
169 | struct ev_signal |
159 | { |
170 | { |
160 | EV_WATCHER_LIST (ev_signal); |
171 | EV_WATCHER_LIST (ev_signal); |
161 | #if EV_MULTIPLICITY |
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162 | struct ev_loop *loop; |
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163 | #endif |
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164 | |
172 | |
165 | int signum; /* ro */ |
173 | int signum; /* ro */ |
166 | }; |
174 | }; |
167 | |
175 | |
168 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
176 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
… | |
… | |
195 | EV_WATCHER_LIST (ev_child); |
203 | EV_WATCHER_LIST (ev_child); |
196 | |
204 | |
197 | int pid; /* ro */ |
205 | int pid; /* ro */ |
198 | int rpid; /* rw, holds the received pid */ |
206 | int rpid; /* rw, holds the received pid */ |
199 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
207 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
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208 | }; |
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209 | |
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210 | /* the presence of this union forces similar struct layout */ |
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211 | union ev_any_watcher |
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212 | { |
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213 | struct ev_watcher w; |
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214 | struct ev_watcher_list wl; |
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215 | |
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216 | struct ev_io io; |
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217 | struct ev_timer timer; |
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218 | struct ev_periodic periodic; |
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219 | struct ev_idle idle; |
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220 | struct ev_prepare prepare; |
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221 | struct ev_check check; |
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222 | struct ev_signal signal; |
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223 | struct ev_child child; |
200 | }; |
224 | }; |
201 | |
225 | |
202 | #define EVMETHOD_AUTO 0 /* consults environment */ |
226 | #define EVMETHOD_AUTO 0 /* consults environment */ |
203 | #define EVMETHOD_SELECT 1 |
227 | #define EVMETHOD_SELECT 1 |
204 | #define EVMETHOD_POLL 2 |
228 | #define EVMETHOD_POLL 2 |
205 | #define EVMETHOD_EPOLL 4 |
229 | #define EVMETHOD_EPOLL 4 |
206 | #define EVMETHOD_KQUEUE 8 |
230 | #define EVMETHOD_KQUEUE 8 |
207 | #define EVMETHOD_DEVPOLL 16 /* NYI */ |
231 | #define EVMETHOD_DEVPOLL 16 /* NYI */ |
208 | #define EVMETHOD_PORT 32 /* NYI */ |
232 | #define EVMETHOD_PORT 32 /* NYI */ |
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233 | #define EVMETHOD_WIN32 64 /* NYI */ |
209 | #define EVMETHOD_ANY ~0 /* any method, do not consult env */ |
234 | #define EVMETHOD_ANY ~0 /* any method, do not consult env */ |
210 | |
235 | |
211 | #if EV_PROTOTYPES |
236 | #if EV_PROTOTYPES |
212 | int ev_version_major (void); |
237 | int ev_version_major (void); |
213 | int ev_version_minor (void); |
238 | int ev_version_minor (void); |
214 | |
239 | |
215 | /* these three calls are suitable for plugging into pthread_atfork */ |
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216 | void ev_fork_prepare (void); |
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217 | void ev_fork_parent (void); |
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218 | void ev_fork_child (void); |
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219 | |
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220 | ev_tstamp ev_time (void); |
240 | ev_tstamp ev_time (void); |
221 | |
241 | |
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242 | /* Sets the allocation function to use, works like realloc. |
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243 | * It is used to allocate and free memory. |
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244 | * If it returns zero when memory needs to be allocated, the library might abort |
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245 | * or take some potentially destructive action. |
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246 | * The default is your system realloc function. |
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247 | */ |
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248 | void ev_set_allocator (void *(*cb)(void *ptr, long size)); |
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249 | |
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250 | /* set the callback function to call on a |
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251 | * retryable syscall error |
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252 | * (such as failed select, poll, epoll_wait) |
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253 | */ |
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254 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
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255 | |
222 | # if EV_MULTIPLICITY |
256 | # if EV_MULTIPLICITY |
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257 | /* the default loop is the only one that handles signals and child watchers */ |
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258 | /* you can call this as often as you like */ |
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259 | struct ev_loop *ev_default_loop (int methods); /* returns default loop */ |
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260 | |
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261 | /* create and destroy alternative loops that don't handle signals */ |
223 | struct ev_loop *ev_loop_new (int methods); |
262 | struct ev_loop *ev_loop_new (int methods); |
224 | void ev_loop_delete (EV_P); |
263 | void ev_loop_destroy (EV_P); |
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264 | void ev_loop_fork (EV_P); |
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265 | |
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266 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
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267 | |
225 | # else |
268 | # else |
226 | int ev_init (int methods); /* returns ev_method */ |
269 | |
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270 | int ev_default_loop (int methods); /* returns true when successful */ |
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271 | |
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272 | static ev_tstamp |
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273 | ev_now () |
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274 | { |
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275 | extern ev_tstamp ev_rt_now; |
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276 | |
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277 | return ev_rt_now; |
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278 | } |
227 | # endif |
279 | # endif |
228 | |
280 | |
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281 | void ev_default_destroy (void); /* destroy the default loop */ |
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282 | /* this needs to be called after fork, to duplicate the default loop */ |
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283 | /* if you create alternative loops you have to call ev_loop_fork on them */ |
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284 | /* you can call it in either the parent or the child */ |
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285 | /* you can actually call it at any time, anywhere :) */ |
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286 | void ev_default_fork (void); |
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287 | |
229 | int ev_method (EV_P); |
288 | int ev_method (EV_P); |
230 | |
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231 | #endif |
289 | #endif |
232 | |
290 | |
233 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
291 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
234 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
292 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
235 | #define EVUNLOOP_ONCE 1 /* unloop once */ |
293 | #define EVUNLOOP_ONCE 1 /* unloop once */ |
… | |
… | |
237 | |
295 | |
238 | #if EV_PROTOTYPES |
296 | #if EV_PROTOTYPES |
239 | void ev_loop (EV_P_ int flags); |
297 | void ev_loop (EV_P_ int flags); |
240 | void ev_unloop (EV_P_ int how); /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ |
298 | void ev_unloop (EV_P_ int how); /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ |
241 | |
299 | |
242 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
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243 | |
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244 | /* |
300 | /* |
245 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
301 | * ref/unref can be used to add or remove a refcount on the mainloop. every watcher |
246 | * keeps one reference. if you have a long-runing watcher you never unregister that |
302 | * keeps one reference. if you have a long-runing watcher you never unregister that |
247 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
303 | * should not keep ev_loop from running, unref() after starting, and ref() before stopping. |
248 | */ |
304 | */ |
… | |
… | |
253 | /* if timeout is < 0, do wait indefinitely */ |
309 | /* if timeout is < 0, do wait indefinitely */ |
254 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
310 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
255 | #endif |
311 | #endif |
256 | |
312 | |
257 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
313 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
258 | /* either use ev_watcher_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
314 | /* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
259 | #define ev_watcher_init(ev,cb_) do { (ev)->active = (ev)->pending = (ev)->priority = 0; (ev)->cb = (cb_); } while (0) |
315 | #define ev_init(ev,cb_) do { \ |
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316 | ((struct ev_watcher *)(void *)(ev))->active = \ |
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317 | ((struct ev_watcher *)(void *)(ev))->pending = \ |
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318 | ((struct ev_watcher *)(void *)(ev))->priority = 0; \ |
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319 | ev_set_cb ((ev), cb_); \ |
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320 | } while (0) |
260 | |
321 | |
261 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
322 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
262 | #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
323 | #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
263 | #define ev_periodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0) |
324 | #define ev_periodic_set(ev,at_,ival_,res_) do { (ev)->at = (at_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) |
264 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
325 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
265 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
326 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
266 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
327 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
267 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
328 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
268 | #define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) |
329 | #define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) |
269 | |
330 | |
270 | #define ev_io_init(ev,cb,fd,events) do { ev_watcher_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
331 | #define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
271 | #define ev_timer_init(ev,cb,after,repeat) do { ev_watcher_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
332 | #define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
272 | #define ev_periodic_init(ev,cb,at,interval) do { ev_watcher_init ((ev), (cb)); ev_periodic_set ((ev),(at),(interval)); } while (0) |
333 | #define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) |
273 | #define ev_signal_init(ev,cb,signum) do { ev_watcher_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
334 | #define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
274 | #define ev_idle_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
335 | #define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
275 | #define ev_prepare_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
336 | #define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
276 | #define ev_check_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
337 | #define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
277 | #define ev_child_init(ev,cb,pid) do { ev_watcher_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
338 | #define ev_child_init(ev,cb,pid) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
278 | |
339 | |
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340 | #define ev_is_pending(ev) (0 + ((struct ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
279 | #define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ |
341 | #define ev_is_active(ev) (0 + ((struct ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
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342 | |
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343 | #define ev_priority(ev) ((struct ev_watcher *)(void *)(ev))->priority /* rw */ |
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344 | #define ev_cb(ev) (ev)->cb /* rw */ |
280 | #define ev_set_priority(ev,pri) (ev)->priority = pri |
345 | #define ev_set_priority(ev,pri) ev_priority (ev) = (pri) |
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346 | |
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347 | #ifndef ev_set_cb |
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348 | # define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
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349 | #endif |
281 | |
350 | |
282 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
351 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
283 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
352 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
284 | #if EV_PROTOTYPES |
353 | #if EV_PROTOTYPES |
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354 | |
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355 | /* feeds an event into a watcher as if the event actually occured */ |
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356 | /* accepts any ev_watcher type */ |
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357 | void ev_feed_event (EV_P_ void *w, int revents); |
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358 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
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359 | void ev_feed_signal_event (EV_P_ int signum); |
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360 | |
285 | void ev_io_start (EV_P_ struct ev_io *w); |
361 | void ev_io_start (EV_P_ struct ev_io *w); |
286 | void ev_io_stop (EV_P_ struct ev_io *w); |
362 | void ev_io_stop (EV_P_ struct ev_io *w); |
287 | |
363 | |
288 | void ev_timer_start (EV_P_ struct ev_timer *w); |
364 | void ev_timer_start (EV_P_ struct ev_timer *w); |
289 | void ev_timer_stop (EV_P_ struct ev_timer *w); |
365 | void ev_timer_stop (EV_P_ struct ev_timer *w); |
290 | void ev_timer_again (EV_P_ struct ev_timer *w); /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
366 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
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367 | void ev_timer_again (EV_P_ struct ev_timer *w); |
291 | |
368 | |
292 | void ev_periodic_start (EV_P_ struct ev_periodic *w); |
369 | void ev_periodic_start (EV_P_ struct ev_periodic *w); |
293 | void ev_periodic_stop (EV_P_ struct ev_periodic *w); |
370 | void ev_periodic_stop (EV_P_ struct ev_periodic *w); |
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371 | void ev_periodic_again (EV_P_ struct ev_periodic *w); |
294 | |
372 | |
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373 | void ev_idle_start (EV_P_ struct ev_idle *w); |
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374 | void ev_idle_stop (EV_P_ struct ev_idle *w); |
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375 | |
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376 | void ev_prepare_start (EV_P_ struct ev_prepare *w); |
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377 | void ev_prepare_stop (EV_P_ struct ev_prepare *w); |
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378 | |
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379 | void ev_check_start (EV_P_ struct ev_check *w); |
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380 | void ev_check_stop (EV_P_ struct ev_check *w); |
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381 | |
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382 | /* only supported in the default loop */ |
295 | void ev_signal_start (EV_P_ struct ev_signal *w); |
383 | void ev_signal_start (EV_P_ struct ev_signal *w); |
296 | void ev_signal_stop (EV_P_ struct ev_signal *w); |
384 | void ev_signal_stop (EV_P_ struct ev_signal *w); |
297 | |
385 | |
298 | void ev_idle_start (EV_P_ struct ev_idle *w); |
386 | /* only supported in the default loop */ |
299 | void ev_idle_stop (EV_P_ struct ev_idle *w); |
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300 | |
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301 | void ev_prepare_start (EV_P_ struct ev_prepare *w); |
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302 | void ev_prepare_stop (EV_P_ struct ev_prepare *w); |
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303 | |
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304 | void ev_check_start (EV_P_ struct ev_check *w); |
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305 | void ev_check_stop (EV_P_ struct ev_check *w); |
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306 | |
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307 | void ev_child_start (EV_P_ struct ev_child *w); |
387 | void ev_child_start (EV_P_ struct ev_child *w); |
308 | void ev_child_stop (EV_P_ struct ev_child *w); |
388 | void ev_child_stop (EV_P_ struct ev_child *w); |
309 | #endif |
389 | #endif |
310 | |
390 | |
311 | #ifdef __cplusplus |
391 | #ifdef __cplusplus |