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Comparing libev/ev.h (file contents):
Revision 1.14 by root, Wed Oct 31 20:46:44 2007 UTC vs.
Revision 1.29 by root, Sun Nov 4 00:24:17 2007 UTC

… …
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
34extern "C" {
35#endif
36
33typedef double ev_tstamp; 37typedef double ev_tstamp;
34 38
39/* these priorities are inclusive, higher priorities will be called earlier */
40#ifndef EV_MINPRI
41# define EV_MINPRI -2
42#endif
43#ifndef EV_MAXPRI
44# define EV_MAXPRI +2
45#endif
46
47#ifndef EV_MULTIPLICITY
48# define EV_MULTIPLICITY 1
49#endif
50
51/* support multiple event loops? */
52#if EV_MULTIPLICITY
53struct ev_loop;
54# define EV_P struct ev_loop *loop
55# define EV_P_ EV_P,
56# define EV_A loop
57# define EV_A_ EV_A,
58#else
59# define EV_P void
60# define EV_P_
61# define EV_A
62# define EV_A_
63#endif
64
35/* eventmask, revents, events... */ 65/* eventmask, revents, events... */
36#define EV_UNDEF -1 /* guaranteed to be invalid */ 66#define EV_UNDEF -1 /* guaranteed to be invalid */
37#define EV_NONE 0x000000 67#define EV_NONE 0x00
38#define EV_READ 0x000001 68#define EV_READ 0x01
39#define EV_WRITE 0x000002 69#define EV_WRITE 0x02
40#define EV_TIMEOUT 0x000004 70#define EV_TIMEOUT 0x000100
71#define EV_PERIODIC 0x000200
41#define EV_SIGNAL 0x000008 72#define EV_SIGNAL 0x000400
42#define EV_IDLE 0x000010 73#define EV_IDLE 0x000800
43#define EV_CHECK 0x000020 74#define EV_CHECK 0x001000
44#define EV_PREPARE 0x000040 75#define EV_PREPARE 0x002000
45#define EV_CHILD 0x000080 76#define EV_CHILD 0x004000
46#define EV_ERROR 0x800000 77#define EV_ERROR 0x800000 /* sent when an error occurs */
47 78
48/* can be used to add custom fields to all watchers */ 79/* can be used to add custom fields to all watchers */
49#ifndef EV_COMMON 80#ifndef EV_COMMON
50# define EV_COMMON void *data 81# define EV_COMMON void *data
51#endif 82#endif
… …
65 96
66/* shared by all watchers */ 97/* shared by all watchers */
67#define EV_WATCHER(type) \ 98#define EV_WATCHER(type) \
68 int active; /* private */ \ 99 int active; /* private */ \
69 int pending; /* private */ \ 100 int pending; /* private */ \
101 int priority; /* ro */ \
70 EV_COMMON; /* rw */ \ 102 EV_COMMON; /* rw */ \
71 void (*cb)(struct type *, int revents); /* rw */ /* gets invoked with an eventmask */ 103 void (*cb)(EV_P_ struct type *, int revents); /* rw */ /* gets invoked with an eventmask */
72 104
73#define EV_WATCHER_LIST(type) \ 105#define EV_WATCHER_LIST(type) \
74 EV_WATCHER (type); \ 106 EV_WATCHER (type); \
75 struct type *next /* private */ 107 struct ev_watcher_list *next /* private */
76 108
77#define EV_WATCHER_TIME(type) \ 109#define EV_WATCHER_TIME(type) \
78 EV_WATCHER (type); \ 110 EV_WATCHER (type); \
79 ev_tstamp at /* private */ 111 ev_tstamp at /* private */
80 112
… …
92struct ev_watcher_time { 124struct ev_watcher_time {
93 EV_WATCHER_TIME (ev_watcher_time); 125 EV_WATCHER_TIME (ev_watcher_time);
94}; 126};
95 127
96/* invoked after a specific time, repeatable (based on monotonic clock) */ 128/* invoked after a specific time, repeatable (based on monotonic clock) */
129/* revent EV_TIMEOUT */
97struct ev_timer 130struct ev_timer
98{ 131{
99 EV_WATCHER_TIME (ev_timer); 132 EV_WATCHER_TIME (ev_timer);
100 133
101 ev_tstamp repeat; /* rw */ 134 ev_tstamp repeat; /* rw */
102}; 135};
103 136
104/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ 137/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
138/* revent EV_PERIODIC */
105struct ev_periodic 139struct ev_periodic
106{ 140{
107 EV_WATCHER_TIME (ev_periodic); 141 EV_WATCHER_TIME (ev_periodic);
108 142
109 ev_tstamp interval; /* rw */ 143 ev_tstamp interval; /* rw */
110}; 144};
111 145
112/* invoked when fd is either EV_READable or EV_WRITEable */ 146/* invoked when fd is either EV_READable or EV_WRITEable */
147/* revent EV_READ, EV_WRITE */
113struct ev_io 148struct ev_io
114{ 149{
115 EV_WATCHER_LIST (ev_io); 150 EV_WATCHER_LIST (ev_io);
116 151
117 int fd; /* ro */ 152 int fd; /* ro */
118 int events; /* ro */ 153 int events; /* ro */
119}; 154};
120 155
121/* invoked when the given signal has been received */ 156/* invoked when the given signal has been received */
157/* revent EV_SIGNAL */
122struct ev_signal 158struct ev_signal
123{ 159{
124 EV_WATCHER_LIST (ev_signal); 160 EV_WATCHER_LIST (ev_signal);
161#if EV_MULTIPLICITY
162 struct ev_loop *loop;
163#endif
125 164
126 int signum; /* ro */ 165 int signum; /* ro */
127}; 166};
128 167
129/* invoked when the nothing else needs to be done, keeps the process from blocking */ 168/* invoked when the nothing else needs to be done, keeps the process from blocking */
169/* revent EV_IDLE */
130struct ev_idle 170struct ev_idle
131{ 171{
132 EV_WATCHER (ev_idle); 172 EV_WATCHER (ev_idle);
133}; 173};
134 174
135/* invoked for each run of the mainloop, just before the blocking call */ 175/* invoked for each run of the mainloop, just before the blocking call */
136/* you can still change events in any way you like */ 176/* you can still change events in any way you like */
177/* revent EV_PREPARE */
137struct ev_prepare 178struct ev_prepare
138{ 179{
139 EV_WATCHER (ev_prepare); 180 EV_WATCHER (ev_prepare);
140}; 181};
141 182
142/* invoked for each run of the mainloop, just after the blocking call */ 183/* invoked for each run of the mainloop, just after the blocking call */
184/* revent EV_CHECK */
143struct ev_check 185struct ev_check
144{ 186{
145 EV_WATCHER (ev_check); 187 EV_WATCHER (ev_check);
146}; 188};
147 189
148/* invoked when sigchld is received and waitpid indicates the givne pid */ 190/* invoked when sigchld is received and waitpid indicates the givne pid */
191/* revent EV_CHILD */
192/* does not support priorities */
149struct ev_child 193struct ev_child
150{ 194{
151 EV_WATCHER_LIST (ev_child); 195 EV_WATCHER_LIST (ev_child);
152 196
153 int pid; /* ro */ 197 int pid; /* ro */
198 int rpid; /* rw, holds the received pid */
154 int status; /* rw, holds the exit status, use the macros from sys/wait.h */ 199 int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
155}; 200};
156 201
157#define EVMETHOD_NONE 0 202#define EVMETHOD_AUTO 0 /* consults environment */
158#define EVMETHOD_SELECT 1 203#define EVMETHOD_SELECT 1
159#define EVMETHOD_EPOLL 2 204#define EVMETHOD_POLL 2
205#define EVMETHOD_EPOLL 4
206#define EVMETHOD_KQUEUE 8
207#define EVMETHOD_DEVPOLL 16 /* NYI */
208#define EVMETHOD_PORT 32 /* NYI */
209#define EVMETHOD_ANY ~0 /* any method, do not consult env */
210
160#if EV_PROTOTYPES 211#if EV_PROTOTYPES
161extern int ev_method;
162int ev_init (int flags); /* returns ev_method */
163int ev_version_major (void); 212int ev_version_major (void);
164int ev_version_minor (void); 213int ev_version_minor (void);
165 214
166/* these three calls are suitable for plugging into pthread_atfork */ 215/* these three calls are suitable for plugging into pthread_atfork */
167void ev_prefork (void); 216void ev_fork_prepare (void);
168void ev_postfork_parent (void); 217void ev_fork_parent (void);
169void ev_postfork_child (void); 218void ev_fork_child (void);
170 219
171extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */
172ev_tstamp ev_time (void); 220ev_tstamp ev_time (void);
221
222# if EV_MULTIPLICITY
223struct ev_loop *ev_loop_new (int methods);
224void ev_loop_delete (EV_P);
225# else
226int ev_init (int methods); /* returns ev_method */
227# endif
228
229int ev_method (EV_P);
230
173#endif 231#endif
174 232
175#define EVLOOP_NONBLOCK 1 /* do not block/wait */ 233#define EVLOOP_NONBLOCK 1 /* do not block/wait */
176#define EVLOOP_ONESHOT 2 /* block *once* only */ 234#define EVLOOP_ONESHOT 2 /* block *once* only */
235#define EVUNLOOP_ONCE 1 /* unloop once */
236#define EVUNLOOP_ALL 2 /* unloop all loops */
237
177#if EV_PROTOTYPES 238#if EV_PROTOTYPES
178void ev_loop (int flags); 239void ev_loop (EV_P_ int flags);
179extern int ev_loop_done; /* set to 1 to break out of event loop, set to 2 to break out of all event loops */ 240void 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
242ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */
243
244/*
245 * 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
247 * should not keep ev_loop from running, unref() after starting, and ref() before stopping.
248 */
249void ev_ref (EV_P);
250void ev_unref (EV_P);
180 251
181/* convinience function, wait for a single event, without registering an event watcher */ 252/* convinience function, wait for a single event, without registering an event watcher */
182/* if timeout is < 0, do wait indefinitely */ 253/* if timeout is < 0, do wait indefinitely */
183void ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); 254void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg);
184#endif 255#endif
185 256
186/* these may evaluate ev multiple times, and the other arguments at most once */ 257/* these may evaluate ev multiple times, and the other arguments at most once */
187/* either use evw_init + evXXX_set, or the evXXX_init macro, below, to first initialise a watcher */ 258/* either use ev_watcher_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
188#define evw_init(ev,cb_) do { (ev)->active = 0; (ev)->pending = 0; (ev)->cb = (cb_); } while (0) 259#define ev_watcher_init(ev,cb_) do { (ev)->active = (ev)->pending = (ev)->priority = 0; (ev)->cb = (cb_); } while (0)
189 260
190#define evio_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) 261#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0)
191#define evtimer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) 262#define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0)
192#define evperiodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0) 263#define ev_periodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0)
193#define evsignal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) 264#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
194#define evidle_set(ev) /* nop, yes, this is a serious in-joke */ 265#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
195#define evprepare_set(ev) /* nop, yes, this is a serious in-joke */ 266#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
196#define evcheck_set(ev) /* nop, yes, this is a serious in-joke */ 267#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
197#define evchild_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) 268#define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0)
198 269
199#define evio_init(ev,cb,fd,events) do { evw_init ((ev), (cb)); evio_set ((ev),(fd),(events)); } while (0) 270#define ev_io_init(ev,cb,fd,events) do { ev_watcher_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
200#define evtimer_init(ev,cb,after,repeat) do { evw_init ((ev), (cb)); evtimer_set ((ev),(after),(repeat)); } 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)
201#define evperiodic_init(ev,cb,at,interval) do { evw_init ((ev), (cb)); evperiodic_set ((ev),(at),(interval)); } 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)
202#define evsignal_init(ev,cb,signum) do { evw_init ((ev), (cb)); evsignal_set ((ev), (signum)); } while (0) 273#define ev_signal_init(ev,cb,signum) do { ev_watcher_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
203#define evidle_init(ev,cb) do { evw_init ((ev), (cb)); evidle_set ((ev)); } while (0) 274#define ev_idle_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
204#define evprepare_init(ev,cb) do { evw_init ((ev), (cb)); evprepare_set ((ev)); } while (0) 275#define ev_prepare_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
205#define evcheck_init(ev,cb) do { evw_init ((ev), (cb)); evcheck_set ((ev)); } while (0) 276#define ev_check_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
206#define evchild_init(ev,cb,pid) do { evw_init ((ev), (cb)); evchild_set ((ev),(pid)); } while (0) 277#define ev_child_init(ev,cb,pid) do { ev_watcher_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0)
207 278
208#define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ 279#define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */
280#define ev_set_priority(ev,pri) (ev)->priority = pri
209 281
210/* stopping (enabling, adding) a watcher does nothing if it is already running */ 282/* stopping (enabling, adding) a watcher does nothing if it is already running */
211/* stopping (disabling, deleting) a watcher does nothing unless its already running */ 283/* stopping (disabling, deleting) a watcher does nothing unless its already running */
212#if EV_PROTOTYPES 284#if EV_PROTOTYPES
213void evio_start (struct ev_io *w); 285void ev_io_start (EV_P_ struct ev_io *w);
214void evio_stop (struct ev_io *w); 286void ev_io_stop (EV_P_ struct ev_io *w);
215 287
216void evtimer_start (struct ev_timer *w); 288void ev_timer_start (EV_P_ struct ev_timer *w);
217void evtimer_stop (struct ev_timer *w); 289void ev_timer_stop (EV_P_ struct ev_timer *w);
218void evtimer_again (struct ev_timer *w); /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ 290void 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 */
219 291
220void evperiodic_start (struct ev_periodic *w); 292void ev_periodic_start (EV_P_ struct ev_periodic *w);
221void evperiodic_stop (struct ev_periodic *w); 293void ev_periodic_stop (EV_P_ struct ev_periodic *w);
222 294
223void evsignal_start (struct ev_signal *w); 295void ev_signal_start (EV_P_ struct ev_signal *w);
224void evsignal_stop (struct ev_signal *w); 296void ev_signal_stop (EV_P_ struct ev_signal *w);
225 297
226void evidle_start (struct ev_idle *w); 298void ev_idle_start (EV_P_ struct ev_idle *w);
227void evidle_stop (struct ev_idle *w); 299void ev_idle_stop (EV_P_ struct ev_idle *w);
228 300
229void evprepare_start (struct ev_prepare *w); 301void ev_prepare_start (EV_P_ struct ev_prepare *w);
230void evprepare_stop (struct ev_prepare *w); 302void ev_prepare_stop (EV_P_ struct ev_prepare *w);
231 303
232void evcheck_start (struct ev_check *w); 304void ev_check_start (EV_P_ struct ev_check *w);
233void evcheck_stop (struct ev_check *w); 305void ev_check_stop (EV_P_ struct ev_check *w);
234 306
235void evchild_start (struct ev_child *w); 307void ev_child_start (EV_P_ struct ev_child *w);
236void evchild_stop (struct ev_child *w); 308void ev_child_stop (EV_P_ struct ev_child *w);
237#endif 309#endif
238 310
311#ifdef __cplusplus
312}
239#endif 313#endif
240 314
315#endif
316

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