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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 | |
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96 | |
96 | |
97 | /* shared by all watchers */ |
97 | /* shared by all watchers */ |
98 | #define EV_WATCHER(type) \ |
98 | #define EV_WATCHER(type) \ |
99 | int active; /* private */ \ |
99 | int active; /* private */ \ |
100 | int pending; /* private */ \ |
100 | int pending; /* private */ \ |
101 | int priority; /* ro */ \ |
101 | int priority; /* private */ \ |
102 | EV_COMMON; /* rw */ \ |
102 | EV_COMMON; /* rw */ \ |
103 | void (*cb)(EV_P_ struct type *, int revents); /* rw */ /* gets invoked with an eventmask */ |
103 | void (*cb)(EV_P_ struct type *, int revents) /* private */ /* gets invoked with an eventmask */ |
104 | |
104 | |
105 | #define EV_WATCHER_LIST(type) \ |
105 | #define EV_WATCHER_LIST(type) \ |
106 | EV_WATCHER (type); \ |
106 | EV_WATCHER (type); \ |
107 | struct ev_watcher_list *next /* private */ |
107 | struct ev_watcher_list *next /* private */ |
108 | |
108 | |
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139 | struct ev_periodic |
139 | struct ev_periodic |
140 | { |
140 | { |
141 | EV_WATCHER_TIME (ev_periodic); |
141 | EV_WATCHER_TIME (ev_periodic); |
142 | |
142 | |
143 | ev_tstamp interval; /* rw */ |
143 | ev_tstamp interval; /* rw */ |
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144 | ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ |
144 | }; |
145 | }; |
145 | |
146 | |
146 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
147 | /* invoked when fd is either EV_READable or EV_WRITEable */ |
147 | /* revent EV_READ, EV_WRITE */ |
148 | /* revent EV_READ, EV_WRITE */ |
148 | struct ev_io |
149 | struct ev_io |
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156 | /* invoked when the given signal has been received */ |
157 | /* invoked when the given signal has been received */ |
157 | /* revent EV_SIGNAL */ |
158 | /* revent EV_SIGNAL */ |
158 | struct ev_signal |
159 | struct ev_signal |
159 | { |
160 | { |
160 | EV_WATCHER_LIST (ev_signal); |
161 | 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 | |
162 | |
165 | int signum; /* ro */ |
163 | int signum; /* ro */ |
166 | }; |
164 | }; |
167 | |
165 | |
168 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
166 | /* invoked when the nothing else needs to be done, keeps the process from blocking */ |
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195 | EV_WATCHER_LIST (ev_child); |
193 | EV_WATCHER_LIST (ev_child); |
196 | |
194 | |
197 | int pid; /* ro */ |
195 | int pid; /* ro */ |
198 | int rpid; /* rw, holds the received pid */ |
196 | int rpid; /* rw, holds the received pid */ |
199 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
197 | int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ |
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198 | }; |
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199 | |
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200 | /* the presence of this union forces similar struct layout */ |
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201 | union ev_any_watcher |
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202 | { |
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203 | struct ev_watcher w; |
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204 | struct ev_watcher_list wl; |
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205 | struct ev_io io; |
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206 | struct ev_timer timer; |
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207 | struct ev_periodic periodic; |
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208 | struct ev_signal signal; |
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209 | struct ev_idle idle; |
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210 | struct ev_child child; |
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211 | struct ev_prepare prepare; |
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212 | struct ev_check check; |
200 | }; |
213 | }; |
201 | |
214 | |
202 | #define EVMETHOD_AUTO 0 /* consults environment */ |
215 | #define EVMETHOD_AUTO 0 /* consults environment */ |
203 | #define EVMETHOD_SELECT 1 |
216 | #define EVMETHOD_SELECT 1 |
204 | #define EVMETHOD_POLL 2 |
217 | #define EVMETHOD_POLL 2 |
205 | #define EVMETHOD_EPOLL 4 |
218 | #define EVMETHOD_EPOLL 4 |
206 | #define EVMETHOD_KQUEUE 8 |
219 | #define EVMETHOD_KQUEUE 8 |
207 | #define EVMETHOD_DEVPOLL 16 /* NYI */ |
220 | #define EVMETHOD_DEVPOLL 16 /* NYI */ |
208 | #define EVMETHOD_PORT 32 /* NYI */ |
221 | #define EVMETHOD_PORT 32 /* NYI */ |
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222 | #define EVMETHOD_WIN32 64 /* NYI */ |
209 | #define EVMETHOD_ANY ~0 /* any method, do not consult env */ |
223 | #define EVMETHOD_ANY ~0 /* any method, do not consult env */ |
210 | |
224 | |
211 | #if EV_PROTOTYPES |
225 | #if EV_PROTOTYPES |
212 | int ev_version_major (void); |
226 | int ev_version_major (void); |
213 | int ev_version_minor (void); |
227 | int ev_version_minor (void); |
214 | |
228 | |
215 | ev_tstamp ev_time (void); |
229 | ev_tstamp ev_time (void); |
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230 | |
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231 | /* Sets the allocation function to use, works like realloc. |
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232 | * It is used to allocate and free memory. |
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233 | * If it returns zero when memory needs to be allocated, the library might abort |
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234 | * or take some potentially destructive action. |
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235 | * The default is your system realloc function. |
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236 | */ |
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237 | void ev_set_allocator (void *(*cb)(void *ptr, long size)); |
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238 | |
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239 | /* set the callback function to call on a |
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240 | * retryable syscall error |
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241 | * (such as failed select, poll, epoll_wait) |
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242 | */ |
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243 | void ev_set_syserr_cb (void (*cb)(const char *msg)); |
216 | |
244 | |
217 | # if EV_MULTIPLICITY |
245 | # if EV_MULTIPLICITY |
218 | /* the default loop is the only one that handles signals and child watchers */ |
246 | /* the default loop is the only one that handles signals and child watchers */ |
219 | /* you can call this as often as you like */ |
247 | /* you can call this as often as you like */ |
220 | struct ev_loop *ev_default_loop (int methods); /* returns default loop */ |
248 | struct ev_loop *ev_default_loop (int methods); /* returns default loop */ |
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261 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
289 | void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); |
262 | #endif |
290 | #endif |
263 | |
291 | |
264 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
292 | /* these may evaluate ev multiple times, and the other arguments at most once */ |
265 | /* either use ev_watcher_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
293 | /* either use ev_watcher_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */ |
266 | #define ev_watcher_init(ev,cb_) do { (ev)->active = (ev)->pending = (ev)->priority = 0; (ev)->cb = (cb_); } while (0) |
294 | #define ev_watcher_init(ev,cb_) do { \ |
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295 | ((struct ev_watcher *)(void *)(ev))->active = \ |
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296 | ((struct ev_watcher *)(void *)(ev))->pending = \ |
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297 | ((struct ev_watcher *)(void *)(ev))->priority = 0; \ |
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298 | (ev)->cb = (cb_); \ |
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299 | } while (0) |
267 | |
300 | |
268 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
301 | #define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) |
269 | #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
302 | #define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) |
270 | #define ev_periodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0) |
303 | #define ev_periodic_set(ev,at_,ival_,res_) do { (ev)->at = (at_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0) |
271 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
304 | #define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) |
272 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
305 | #define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ |
273 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
306 | #define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ |
274 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
307 | #define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ |
275 | #define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) |
308 | #define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) |
276 | |
309 | |
277 | #define ev_io_init(ev,cb,fd,events) do { ev_watcher_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
310 | #define ev_io_init(ev,cb,fd,events) do { ev_watcher_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) |
278 | #define ev_timer_init(ev,cb,after,repeat) do { ev_watcher_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
311 | #define ev_timer_init(ev,cb,after,repeat) do { ev_watcher_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) |
279 | #define ev_periodic_init(ev,cb,at,interval) do { ev_watcher_init ((ev), (cb)); ev_periodic_set ((ev),(at),(interval)); } while (0) |
312 | #define ev_periodic_init(ev,cb,at,ival,res) do { ev_watcher_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) |
280 | #define ev_signal_init(ev,cb,signum) do { ev_watcher_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
313 | #define ev_signal_init(ev,cb,signum) do { ev_watcher_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) |
281 | #define ev_idle_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
314 | #define ev_idle_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) |
282 | #define ev_prepare_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
315 | #define ev_prepare_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) |
283 | #define ev_check_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
316 | #define ev_check_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_check_set ((ev)); } while (0) |
284 | #define ev_child_init(ev,cb,pid) do { ev_watcher_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
317 | #define ev_child_init(ev,cb,pid) do { ev_watcher_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) |
285 | |
318 | |
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319 | #define ev_is_pending(ev) (0 + ((struct ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ |
286 | #define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ |
320 | #define ev_is_active(ev) (0 + ((struct ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ |
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321 | |
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322 | #define ev_priority(ev) ((struct ev_watcher *)(void *)(ev))->priority /* rw */ |
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323 | #define ev_cb(ev) (ev)->cb /* rw */ |
287 | #define ev_set_priority(ev,pri) (ev)->priority = pri |
324 | #define ev_set_priority(ev,pri) ev_priority (ev) = (pri) |
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325 | #define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_) |
288 | |
326 | |
289 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
327 | /* stopping (enabling, adding) a watcher does nothing if it is already running */ |
290 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
328 | /* stopping (disabling, deleting) a watcher does nothing unless its already running */ |
291 | #if EV_PROTOTYPES |
329 | #if EV_PROTOTYPES |
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330 | |
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331 | /* feeds an event into a watcher as if the event actually occured */ |
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332 | /* accepts any ev_watcher type */ |
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333 | void ev_feed_event (EV_P_ void *w, int revents); |
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334 | void ev_feed_fd_event (EV_P_ int fd, int revents); |
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335 | void ev_feed_signal_event (EV_P_ int signum); |
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336 | |
292 | void ev_io_start (EV_P_ struct ev_io *w); |
337 | void ev_io_start (EV_P_ struct ev_io *w); |
293 | void ev_io_stop (EV_P_ struct ev_io *w); |
338 | void ev_io_stop (EV_P_ struct ev_io *w); |
294 | |
339 | |
295 | void ev_timer_start (EV_P_ struct ev_timer *w); |
340 | void ev_timer_start (EV_P_ struct ev_timer *w); |
296 | void ev_timer_stop (EV_P_ struct ev_timer *w); |
341 | void ev_timer_stop (EV_P_ struct ev_timer *w); |
297 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
342 | /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ |
298 | void ev_timer_again (EV_P_ struct ev_timer *w); |
343 | void ev_timer_again (EV_P_ struct ev_timer *w); |
299 | |
344 | |
300 | void ev_periodic_start (EV_P_ struct ev_periodic *w); |
345 | void ev_periodic_start (EV_P_ struct ev_periodic *w); |
301 | void ev_periodic_stop (EV_P_ struct ev_periodic *w); |
346 | void ev_periodic_stop (EV_P_ struct ev_periodic *w); |
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347 | void ev_periodic_again (EV_P_ struct ev_periodic *w); |
302 | |
348 | |
303 | void ev_idle_start (EV_P_ struct ev_idle *w); |
349 | void ev_idle_start (EV_P_ struct ev_idle *w); |
304 | void ev_idle_stop (EV_P_ struct ev_idle *w); |
350 | void ev_idle_stop (EV_P_ struct ev_idle *w); |
305 | |
351 | |
306 | void ev_prepare_start (EV_P_ struct ev_prepare *w); |
352 | void ev_prepare_start (EV_P_ struct ev_prepare *w); |