… | |
… | |
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 | |
… | |
… | |
42 | #endif |
42 | #endif |
43 | #ifndef EV_MAXPRI |
43 | #ifndef EV_MAXPRI |
44 | # define EV_MAXPRI +2 |
44 | # define EV_MAXPRI +2 |
45 | #endif |
45 | #endif |
46 | |
46 | |
|
|
47 | #ifndef EV_MULTIPLICITY |
|
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48 | # define EV_MULTIPLICITY 1 |
|
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49 | #endif |
|
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50 | |
|
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51 | /* support multiple event loops? */ |
|
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52 | #if EV_MULTIPLICITY |
|
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53 | struct ev_loop; |
|
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54 | # define EV_P struct ev_loop *loop |
|
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55 | # define EV_P_ EV_P, |
|
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56 | # define EV_A loop |
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57 | # define EV_A_ EV_A, |
|
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58 | #else |
47 | #define EV_P void |
59 | # define EV_P void |
48 | #define EV_P_ |
60 | # define EV_P_ |
49 | #define EV_A |
61 | # define EV_A |
50 | #define EV_A_ |
62 | # define EV_A_ |
|
|
63 | #endif |
51 | |
64 | |
52 | /* eventmask, revents, events... */ |
65 | /* eventmask, revents, events... */ |
53 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
66 | #define EV_UNDEF -1 /* guaranteed to be invalid */ |
54 | #define EV_NONE 0x00 |
67 | #define EV_NONE 0x00 |
55 | #define EV_READ 0x01 |
68 | #define EV_READ 0x01 |
… | |
… | |
72 | #endif |
85 | #endif |
73 | |
86 | |
74 | #define EV_VERSION_MAJOR 1 |
87 | #define EV_VERSION_MAJOR 1 |
75 | #define EV_VERSION_MINOR 1 |
88 | #define EV_VERSION_MINOR 1 |
76 | |
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 |
|
|
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 | |
77 | /* |
97 | /* |
78 | * struct member types: |
98 | * struct member types: |
79 | * 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. |
80 | * 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 |
81 | * 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 |
… | |
… | |
83 | |
103 | |
84 | /* shared by all watchers */ |
104 | /* shared by all watchers */ |
85 | #define EV_WATCHER(type) \ |
105 | #define EV_WATCHER(type) \ |
86 | int active; /* private */ \ |
106 | int active; /* private */ \ |
87 | int pending; /* private */ \ |
107 | int pending; /* private */ \ |
88 | int priority; /* ro */ \ |
108 | int priority; /* private */ \ |
89 | EV_COMMON; /* rw */ \ |
109 | EV_COMMON; /* rw */ \ |
90 | void (*cb)(EV_P_ struct type *, int revents); /* rw */ /* gets invoked with an eventmask */ |
110 | EV_CB_DECLARE (type) /* private */ |
91 | |
111 | |
92 | #define EV_WATCHER_LIST(type) \ |
112 | #define EV_WATCHER_LIST(type) \ |
93 | EV_WATCHER (type); \ |
113 | EV_WATCHER (type); \ |
94 | struct ev_watcher_list *next /* private */ |
114 | struct ev_watcher_list *next /* private */ |
95 | |
115 | |
96 | #define EV_WATCHER_TIME(type) \ |
116 | #define EV_WATCHER_TIME(type) \ |
97 | EV_WATCHER (type); \ |
117 | EV_WATCHER (type); \ |
98 | ev_tstamp at /* private */ |
118 | ev_tstamp at /* private */ |
99 | |
119 | |
100 | /* base class, nothing to see here unless you subclass */ |
120 | /* base class, nothing to see here unless you subclass */ |
101 | struct ev_watcher { |
121 | struct ev_watcher |
|
|
122 | { |
102 | EV_WATCHER (ev_watcher); |
123 | EV_WATCHER (ev_watcher); |
103 | }; |
124 | }; |
104 | |
125 | |
105 | /* base class, nothing to see here unless you subclass */ |
126 | /* base class, nothing to see here unless you subclass */ |
106 | struct ev_watcher_list { |
127 | struct ev_watcher_list |
|
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128 | { |
107 | EV_WATCHER_LIST (ev_watcher_list); |
129 | EV_WATCHER_LIST (ev_watcher_list); |
108 | }; |
130 | }; |
109 | |
131 | |
110 | /* base class, nothing to see here unless you subclass */ |
132 | /* base class, nothing to see here unless you subclass */ |
111 | struct ev_watcher_time { |
133 | struct ev_watcher_time |
|
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134 | { |
112 | EV_WATCHER_TIME (ev_watcher_time); |
135 | EV_WATCHER_TIME (ev_watcher_time); |
113 | }; |
136 | }; |
114 | |
137 | |
115 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
138 | /* invoked after a specific time, repeatable (based on monotonic clock) */ |
116 | /* revent EV_TIMEOUT */ |
139 | /* revent EV_TIMEOUT */ |
… | |
… | |
126 | struct ev_periodic |
149 | struct ev_periodic |
127 | { |
150 | { |
128 | EV_WATCHER_TIME (ev_periodic); |
151 | EV_WATCHER_TIME (ev_periodic); |
129 | |
152 | |
130 | 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 */ |
131 | }; |
155 | }; |
132 | |
156 | |
133 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
157 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
134 | /* revent EV_READ, EV_WRITE */ |
158 | /* revent EV_READ, EV_WRITE */ |
135 | struct ev_io |
159 | struct ev_io |
… | |
… | |
179 | EV_WATCHER_LIST (ev_child); |
203 | EV_WATCHER_LIST (ev_child); |
180 | |
204 | |
181 | int pid; /* ro */ |
205 | int pid; /* ro */ |
182 | int rpid; /* rw, holds the received pid */ |
206 | int rpid; /* rw, holds the received pid */ |
183 | 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; |
184 | }; |
224 | }; |
185 | |
225 | |
186 | #define EVMETHOD_AUTO 0 /* consults environment */ |
226 | #define EVMETHOD_AUTO 0 /* consults environment */ |
187 | #define EVMETHOD_SELECT 1 |
227 | #define EVMETHOD_SELECT 1 |
188 | #define EVMETHOD_POLL 2 |
228 | #define EVMETHOD_POLL 2 |
189 | #define EVMETHOD_EPOLL 4 |
229 | #define EVMETHOD_EPOLL 4 |
190 | #define EVMETHOD_KQUEUE 8 |
230 | #define EVMETHOD_KQUEUE 8 |
191 | #define EVMETHOD_DEVPOLL 16 /* NYI */ |
231 | #define EVMETHOD_DEVPOLL 16 /* NYI */ |
192 | #define EVMETHOD_PORT 32 /* NYI */ |
232 | #define EVMETHOD_PORT 32 /* NYI */ |
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233 | #define EVMETHOD_WIN32 64 /* NYI */ |
193 | #define EVMETHOD_ANY ~0 /* any method, do not consult env */ |
234 | #define EVMETHOD_ANY ~0 /* any method, do not consult env */ |
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235 | |
194 | #if EV_PROTOTYPES |
236 | #if EV_PROTOTYPES |
195 | int ev_method (EV_P); |
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196 | int ev_init (EV_P_ int methods); /* returns ev_method */ |
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197 | int ev_version_major (void); |
237 | int ev_version_major (void); |
198 | int ev_version_minor (void); |
238 | int ev_version_minor (void); |
199 | |
239 | |
200 | /* these three calls are suitable for plugging into pthread_atfork */ |
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201 | void ev_fork_prepare (void); |
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202 | void ev_fork_parent (void); |
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203 | void ev_fork_child (void); |
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204 | |
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205 | ev_tstamp ev_time (void); |
240 | ev_tstamp ev_time (void); |
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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 | |
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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 */ |
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262 | struct ev_loop *ev_loop_new (int methods); |
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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 | |
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268 | # else |
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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_rt_now; |
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276 | |
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277 | return ev_rt_now; |
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278 | } |
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279 | # endif |
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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 | |
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288 | int ev_method (EV_P); |
206 | #endif |
289 | #endif |
207 | |
290 | |
208 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
291 | #define EVLOOP_NONBLOCK 1 /* do not block/wait */ |
209 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
292 | #define EVLOOP_ONESHOT 2 /* block *once* only */ |
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293 | #define EVUNLOOP_ONCE 1 /* unloop once */ |
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294 | #define EVUNLOOP_ALL 2 /* unloop all loops */ |
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295 | |
210 | #if EV_PROTOTYPES |
296 | #if EV_PROTOTYPES |
211 | void ev_loop (EV_P_ int flags); |
297 | void ev_loop (EV_P_ int flags); |
212 | void ev_unloop (EV_P_ int status); /* 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 */ |
213 | |
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214 | ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ |
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215 | |
299 | |
216 | /* |
300 | /* |
217 | * 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 |
218 | * 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 |
219 | * 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. |
… | |
… | |
225 | /* if timeout is < 0, do wait indefinitely */ |
309 | /* if timeout is < 0, do wait indefinitely */ |
226 | 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); |
227 | #endif |
311 | #endif |
228 | |
312 | |
229 | /* 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 */ |
230 | /* 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 */ |
231 | #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) |
232 | |
321 | |
233 | #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) |
234 | #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) |
235 | #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) |
236 | #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) |
237 | #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 */ |
238 | #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 */ |
239 | #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 */ |
240 | #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) |
241 | |
330 | |
242 | #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) |
243 | #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) |
244 | #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) |
245 | #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) |
246 | #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) |
247 | #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) |
248 | #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) |
249 | #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) |
250 | |
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 */ |
251 | #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 */ |
252 | #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 |
253 | |
350 | |
254 | /* 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 */ |
255 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
352 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
256 | #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 | |
257 | void ev_io_start (EV_P_ struct ev_io *w); |
361 | void ev_io_start (EV_P_ struct ev_io *w); |
258 | void ev_io_stop (EV_P_ struct ev_io *w); |
362 | void ev_io_stop (EV_P_ struct ev_io *w); |
259 | |
363 | |
260 | void ev_timer_start (EV_P_ struct ev_timer *w); |
364 | void ev_timer_start (EV_P_ struct ev_timer *w); |
261 | void ev_timer_stop (EV_P_ struct ev_timer *w); |
365 | void ev_timer_stop (EV_P_ struct ev_timer *w); |
262 | 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); |
263 | |
368 | |
264 | void ev_periodic_start (EV_P_ struct ev_periodic *w); |
369 | void ev_periodic_start (EV_P_ struct ev_periodic *w); |
265 | 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); |
266 | |
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 */ |
267 | void ev_signal_start (EV_P_ struct ev_signal *w); |
383 | void ev_signal_start (EV_P_ struct ev_signal *w); |
268 | void ev_signal_stop (EV_P_ struct ev_signal *w); |
384 | void ev_signal_stop (EV_P_ struct ev_signal *w); |
269 | |
385 | |
270 | void ev_idle_start (EV_P_ struct ev_idle *w); |
386 | /* only supported in the default loop */ |
271 | void ev_idle_stop (EV_P_ struct ev_idle *w); |
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272 | |
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273 | void ev_prepare_start (EV_P_ struct ev_prepare *w); |
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274 | void ev_prepare_stop (EV_P_ struct ev_prepare *w); |
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275 | |
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276 | void ev_check_start (EV_P_ struct ev_check *w); |
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277 | void ev_check_stop (EV_P_ struct ev_check *w); |
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278 | |
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279 | void ev_child_start (EV_P_ struct ev_child *w); |
387 | void ev_child_start (EV_P_ struct ev_child *w); |
280 | void ev_child_stop (EV_P_ struct ev_child *w); |
388 | void ev_child_stop (EV_P_ struct ev_child *w); |
281 | #endif |
389 | #endif |
282 | |
390 | |
283 | #ifdef __cplusplus |
391 | #ifdef __cplusplus |