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Comparing libev/ev.h (file contents):
Revision 1.49 by root, Sat Nov 10 21:19:30 2007 UTC vs.
Revision 1.65 by root, Sat Nov 24 06:23:27 2007 UTC

… …
46 46
47#ifndef EV_MULTIPLICITY 47#ifndef EV_MULTIPLICITY
48# define EV_MULTIPLICITY 1 48# define EV_MULTIPLICITY 1
49#endif 49#endif
50 50
51#ifndef EV_PERIODICS
52# define EV_PERIODICS 1
53#endif
54
51/* support multiple event loops? */ 55/* support multiple event loops? */
52#if EV_MULTIPLICITY 56#if EV_MULTIPLICITY
53struct ev_loop; 57struct ev_loop;
54# define EV_P struct ev_loop *loop 58# define EV_P struct ev_loop *loop
55# define EV_P_ EV_P, 59# define EV_P_ EV_P,
… …
65# define EV_DEFAULT_A 69# define EV_DEFAULT_A
66# define EV_DEFAULT_A_ 70# define EV_DEFAULT_A_
67#endif 71#endif
68 72
69/* eventmask, revents, events... */ 73/* eventmask, revents, events... */
70#define EV_UNDEF -1 /* guaranteed to be invalid */ 74#define EV_UNDEF -1L /* guaranteed to be invalid */
71#define EV_NONE 0x00 75#define EV_NONE 0x00L
72#define EV_READ 0x01 76#define EV_READ 0x01L /* io only */
73#define EV_WRITE 0x02 77#define EV_WRITE 0x02L /* io only */
74#define EV_TIMEOUT 0x000100 78#define EV_TIMEOUT 0x000100L /* timer only */
75#define EV_PERIODIC 0x000200 79#define EV_PERIODIC 0x000200L /* periodic timer only */
76#define EV_SIGNAL 0x000400 80#define EV_SIGNAL 0x000400L /* signal only */
77#define EV_IDLE 0x000800 81#define EV_IDLE 0x000800L /* idle only */
78#define EV_CHECK 0x001000 82#define EV_CHECK 0x001000L /* check only */
79#define EV_PREPARE 0x002000 83#define EV_PREPARE 0x002000L /* prepare only */
80#define EV_CHILD 0x004000 84#define EV_CHILD 0x004000L /* child/pid only */
85#define EV_EMBED 0x008000L /* embedded event loop */
81#define EV_ERROR 0x800000 /* sent when an error occurs */ 86#define EV_ERROR 0x800000L /* sent when an error occurs */
82 87
83/* can be used to add custom fields to all watchers */ 88/* can be used to add custom fields to all watchers, while losing binary compatibility */
84#ifndef EV_COMMON 89#ifndef EV_COMMON
85# define EV_COMMON void *data 90# define EV_COMMON void *data;
86#endif 91#endif
87#ifndef EV_PROTOTYPES 92#ifndef EV_PROTOTYPES
88# define EV_PROTOTYPES 1 93# define EV_PROTOTYPES 1
89#endif 94#endif
90 95
… …
108/* shared by all watchers */ 113/* shared by all watchers */
109#define EV_WATCHER(type) \ 114#define EV_WATCHER(type) \
110 int active; /* private */ \ 115 int active; /* private */ \
111 int pending; /* private */ \ 116 int pending; /* private */ \
112 int priority; /* private */ \ 117 int priority; /* private */ \
113 EV_COMMON; /* rw */ \ 118 EV_COMMON /* rw */ \
114 EV_CB_DECLARE (type) /* private */ 119 EV_CB_DECLARE (type) /* private */
115 120
116#define EV_WATCHER_LIST(type) \ 121#define EV_WATCHER_LIST(type) \
117 EV_WATCHER (type); \ 122 EV_WATCHER (type) \
118 struct ev_watcher_list *next /* private */ 123 struct ev_watcher_list *next; /* private */
119 124
120#define EV_WATCHER_TIME(type) \ 125#define EV_WATCHER_TIME(type) \
121 EV_WATCHER (type); \ 126 EV_WATCHER (type) \
122 ev_tstamp at /* private */ 127 ev_tstamp at; /* private */
123 128
124/* base class, nothing to see here unless you subclass */ 129/* base class, nothing to see here unless you subclass */
125struct ev_watcher 130struct ev_watcher
126{ 131{
127 EV_WATCHER (ev_watcher); 132 EV_WATCHER (ev_watcher)
128}; 133};
129 134
130/* base class, nothing to see here unless you subclass */ 135/* base class, nothing to see here unless you subclass */
131struct ev_watcher_list 136struct ev_watcher_list
132{ 137{
133 EV_WATCHER_LIST (ev_watcher_list); 138 EV_WATCHER_LIST (ev_watcher_list)
134}; 139};
135 140
136/* base class, nothing to see here unless you subclass */ 141/* base class, nothing to see here unless you subclass */
137struct ev_watcher_time 142struct ev_watcher_time
138{ 143{
139 EV_WATCHER_TIME (ev_watcher_time); 144 EV_WATCHER_TIME (ev_watcher_time)
140}; 145};
141 146
142/* invoked after a specific time, repeatable (based on monotonic clock) */ 147/* invoked after a specific time, repeatable (based on monotonic clock) */
143/* revent EV_TIMEOUT */ 148/* revent EV_TIMEOUT */
144struct ev_timer 149struct ev_timer
145{ 150{
146 EV_WATCHER_TIME (ev_timer); 151 EV_WATCHER_TIME (ev_timer)
147 152
148 ev_tstamp repeat; /* rw */ 153 ev_tstamp repeat; /* rw */
149}; 154};
150 155
151/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ 156/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
152/* revent EV_PERIODIC */ 157/* revent EV_PERIODIC */
153struct ev_periodic 158struct ev_periodic
154{ 159{
155 EV_WATCHER_TIME (ev_periodic); 160 EV_WATCHER_TIME (ev_periodic)
156 161
157 ev_tstamp interval; /* rw */ 162 ev_tstamp interval; /* rw */
158 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */ 163 ev_tstamp (*reschedule_cb)(struct ev_periodic *w, ev_tstamp now); /* rw */
159}; 164};
160 165
161/* invoked when fd is either EV_READable or EV_WRITEable */ 166/* invoked when fd is either EV_READable or EV_WRITEable */
162/* revent EV_READ, EV_WRITE */ 167/* revent EV_READ, EV_WRITE */
163struct ev_io 168struct ev_io
164{ 169{
165 EV_WATCHER_LIST (ev_io); 170 EV_WATCHER_LIST (ev_io)
166 171
167 int fd; /* ro */ 172 int fd; /* ro */
168 int events; /* ro */ 173 int events; /* ro */
169}; 174};
170 175
171/* invoked when the given signal has been received */ 176/* invoked when the given signal has been received */
172/* revent EV_SIGNAL */ 177/* revent EV_SIGNAL */
173struct ev_signal 178struct ev_signal
174{ 179{
175 EV_WATCHER_LIST (ev_signal); 180 EV_WATCHER_LIST (ev_signal)
176 181
177 int signum; /* ro */ 182 int signum; /* ro */
178}; 183};
179 184
180/* invoked when the nothing else needs to be done, keeps the process from blocking */ 185/* invoked when the nothing else needs to be done, keeps the process from blocking */
181/* revent EV_IDLE */ 186/* revent EV_IDLE */
182struct ev_idle 187struct ev_idle
183{ 188{
184 EV_WATCHER (ev_idle); 189 EV_WATCHER (ev_idle)
185}; 190};
186 191
187/* invoked for each run of the mainloop, just before the blocking call */ 192/* invoked for each run of the mainloop, just before the blocking call */
188/* you can still change events in any way you like */ 193/* you can still change events in any way you like */
189/* revent EV_PREPARE */ 194/* revent EV_PREPARE */
190struct ev_prepare 195struct ev_prepare
191{ 196{
192 EV_WATCHER (ev_prepare); 197 EV_WATCHER (ev_prepare)
193}; 198};
194 199
195/* invoked for each run of the mainloop, just after the blocking call */ 200/* invoked for each run of the mainloop, just after the blocking call */
196/* revent EV_CHECK */ 201/* revent EV_CHECK */
197struct ev_check 202struct ev_check
198{ 203{
199 EV_WATCHER (ev_check); 204 EV_WATCHER (ev_check)
200}; 205};
201 206
202/* invoked when sigchld is received and waitpid indicates the givne pid */ 207/* invoked when sigchld is received and waitpid indicates the given pid */
203/* revent EV_CHILD */ 208/* revent EV_CHILD */
204/* does not support priorities */ 209/* does not support priorities */
205struct ev_child 210struct ev_child
206{ 211{
207 EV_WATCHER_LIST (ev_child); 212 EV_WATCHER_LIST (ev_child)
208 213
209 int pid; /* ro */ 214 int pid; /* ro */
210 int rpid; /* rw, holds the received pid */ 215 int rpid; /* rw, holds the received pid */
211 int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */ 216 int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
212}; 217};
218
219#if EV_MULTIPLICITY
220/* used to embed an event loop inside another */
221/* the callback gets invoked when the event loop has handled events, and can be 0 */
222struct ev_embed
223{
224 EV_WATCHER (ev_embed)
225
226 struct ev_io io; /* private */
227 struct ev_loop *loop; /* ro */
228};
229#endif
213 230
214/* the presence of this union forces similar struct layout */ 231/* the presence of this union forces similar struct layout */
215union ev_any_watcher 232union ev_any_watcher
216{ 233{
217 struct ev_watcher w; 234 struct ev_watcher w;
… …
223 struct ev_idle idle; 240 struct ev_idle idle;
224 struct ev_prepare prepare; 241 struct ev_prepare prepare;
225 struct ev_check check; 242 struct ev_check check;
226 struct ev_signal signal; 243 struct ev_signal signal;
227 struct ev_child child; 244 struct ev_child child;
245 struct ev_embed embed;
228}; 246};
229 247
230#define EVMETHOD_AUTO 0 /* consults environment */ 248/* bits for ev_default_loop and ev_loop_new */
231#define EVMETHOD_SELECT 1 249/* the default */
232#define EVMETHOD_POLL 2 250#define EVFLAG_AUTO 0x00000000UL /* not quite a mask */
233#define EVMETHOD_EPOLL 4 251/* flag bits */
234#define EVMETHOD_KQUEUE 8 252#define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */
235#define EVMETHOD_DEVPOLL 16 /* NYI */ 253/* method bits to be ored together */
236#define EVMETHOD_PORT 32 /* NYI */ 254#define EVBACKEND_SELECT 0x00000001UL /* about anywhere */
237#define EVMETHOD_WIN32 64 /* NYI */ 255#define EVBACKEND_POLL 0x00000002UL /* !win */
238#define EVMETHOD_ANY ~0 /* any method, do not consult env */ 256#define EVBACKEND_EPOLL 0x00000004UL /* linux */
257#define EVBACKEND_KQUEUE 0x00000008UL /* bsd */
258#define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 */ /* NYI */
259#define EVBACKEND_PORT 0x00000020UL /* solaris 10 */
239 260
240#if EV_PROTOTYPES 261#if EV_PROTOTYPES
241int ev_version_major (void); 262int ev_version_major (void);
242int ev_version_minor (void); 263int ev_version_minor (void);
264
265unsigned int ev_supported_backends (void);
266unsigned int ev_recommended_backends (void);
267unsigned int ev_embeddable_backends (void);
243 268
244ev_tstamp ev_time (void); 269ev_tstamp ev_time (void);
245 270
246/* Sets the allocation function to use, works like realloc. 271/* Sets the allocation function to use, works like realloc.
247 * It is used to allocate and free memory. 272 * It is used to allocate and free memory.
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258void ev_set_syserr_cb (void (*cb)(const char *msg)); 283void ev_set_syserr_cb (void (*cb)(const char *msg));
259 284
260# if EV_MULTIPLICITY 285# if EV_MULTIPLICITY
261/* the default loop is the only one that handles signals and child watchers */ 286/* the default loop is the only one that handles signals and child watchers */
262/* you can call this as often as you like */ 287/* you can call this as often as you like */
263struct ev_loop *ev_default_loop (int methods); /* returns default loop */ 288static struct ev_loop *
289ev_default_loop (unsigned int flags)
290{
291 extern struct ev_loop *ev_default_loop_ptr;
292 extern struct ev_loop *ev_default_loop_init (unsigned int flags);
293
294 if (!ev_default_loop_ptr)
295 ev_default_loop_init (flags);
296
297 return ev_default_loop_ptr;
298}
264 299
265/* create and destroy alternative loops that don't handle signals */ 300/* create and destroy alternative loops that don't handle signals */
266struct ev_loop *ev_loop_new (int methods); 301struct ev_loop *ev_loop_new (unsigned int flags);
267void ev_loop_destroy (EV_P); 302void ev_loop_destroy (EV_P);
268void ev_loop_fork (EV_P); 303void ev_loop_fork (EV_P);
269 304
270ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */ 305ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
271 306
272# else 307# else
273 308
274int ev_default_loop (int methods); /* returns true when successful */ 309int ev_default_loop (unsigned int flags); /* returns true when successful */
275 310
276static ev_tstamp 311static ev_tstamp
277ev_now () 312ev_now (void)
278{ 313{
279 extern ev_tstamp ev_rt_now; 314 extern ev_tstamp ev_rt_now;
280 315
281 return ev_rt_now; 316 return ev_rt_now;
282} 317}
… …
287/* if you create alternative loops you have to call ev_loop_fork on them */ 322/* if you create alternative loops you have to call ev_loop_fork on them */
288/* you can call it in either the parent or the child */ 323/* you can call it in either the parent or the child */
289/* you can actually call it at any time, anywhere :) */ 324/* you can actually call it at any time, anywhere :) */
290void ev_default_fork (void); 325void ev_default_fork (void);
291 326
292int ev_method (EV_P); 327unsigned int ev_backend (EV_P);
293#endif 328#endif
294 329
295#define EVLOOP_NONBLOCK 1 /* do not block/wait */ 330#define EVLOOP_NONBLOCK 1 /* do not block/wait */
296#define EVLOOP_ONESHOT 2 /* block *once* only */ 331#define EVLOOP_ONESHOT 2 /* block *once* only */
332#define EVUNLOOP_CANCEL 0 /* undo unloop */
297#define EVUNLOOP_ONCE 1 /* unloop once */ 333#define EVUNLOOP_ONE 1 /* unloop once */
298#define EVUNLOOP_ALL 2 /* unloop all loops */ 334#define EVUNLOOP_ALL 2 /* unloop all loops */
299 335
300#if EV_PROTOTYPES 336#if EV_PROTOTYPES
301void ev_loop (EV_P_ int flags); 337void ev_loop (EV_P_ int flags);
302void 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 */ 338void 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 */
… …
329#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) 365#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
330#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */ 366#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
331#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */ 367#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
332#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */ 368#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
333#define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) 369#define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0)
370#define ev_embed_set(ev,loop_) do { (ev)->loop = (loop_); } while (0)
334 371
335#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0) 372#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
336#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0) 373#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
337#define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0) 374#define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0)
338#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0) 375#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
339#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0) 376#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
340#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0) 377#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
341#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0) 378#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
342#define ev_child_init(ev,cb,pid) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0) 379#define ev_child_init(ev,cb,pid) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0)
380#define ev_embed_init(ev,cb,loop) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(loop)); } while (0)
343 381
344#define ev_is_pending(ev) (0 + ((struct ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */ 382#define ev_is_pending(ev) (0 + ((struct ev_watcher *)(void *)(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
345#define ev_is_active(ev) (0 + ((struct ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */ 383#define ev_is_active(ev) (0 + ((struct ev_watcher *)(void *)(ev))->active) /* ro, true when the watcher has been started */
346 384
347#define ev_priority(ev) ((struct ev_watcher *)(void *)(ev))->priority /* rw */ 385#define ev_priority(ev) ((struct ev_watcher *)(void *)(ev))->priority /* rw */
… …
368void ev_timer_start (EV_P_ struct ev_timer *w); 406void ev_timer_start (EV_P_ struct ev_timer *w);
369void ev_timer_stop (EV_P_ struct ev_timer *w); 407void ev_timer_stop (EV_P_ struct ev_timer *w);
370/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ 408/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
371void ev_timer_again (EV_P_ struct ev_timer *w); 409void ev_timer_again (EV_P_ struct ev_timer *w);
372 410
411#if EV_PERIODICS
373void ev_periodic_start (EV_P_ struct ev_periodic *w); 412void ev_periodic_start (EV_P_ struct ev_periodic *w);
374void ev_periodic_stop (EV_P_ struct ev_periodic *w); 413void ev_periodic_stop (EV_P_ struct ev_periodic *w);
375void ev_periodic_again (EV_P_ struct ev_periodic *w); 414void ev_periodic_again (EV_P_ struct ev_periodic *w);
415#endif
376 416
377void ev_idle_start (EV_P_ struct ev_idle *w); 417void ev_idle_start (EV_P_ struct ev_idle *w);
378void ev_idle_stop (EV_P_ struct ev_idle *w); 418void ev_idle_stop (EV_P_ struct ev_idle *w);
379 419
380void ev_prepare_start (EV_P_ struct ev_prepare *w); 420void ev_prepare_start (EV_P_ struct ev_prepare *w);
… …
388void ev_signal_stop (EV_P_ struct ev_signal *w); 428void ev_signal_stop (EV_P_ struct ev_signal *w);
389 429
390/* only supported in the default loop */ 430/* only supported in the default loop */
391void ev_child_start (EV_P_ struct ev_child *w); 431void ev_child_start (EV_P_ struct ev_child *w);
392void ev_child_stop (EV_P_ struct ev_child *w); 432void ev_child_stop (EV_P_ struct ev_child *w);
433
434# if EV_MULTIPLICITY
435/* only supported when loop to be embedded is in fact embeddable */
436void ev_embed_start (EV_P_ struct ev_embed *w);
437void ev_embed_stop (EV_P_ struct ev_embed *w);
438# endif
439
393#endif 440#endif
394 441
395#ifdef __cplusplus 442#ifdef __cplusplus
396} 443}
397#endif 444#endif

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