ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.h
(Generate patch)

Comparing libev/ev.h (file contents):
Revision 1.12 by root, Wed Oct 31 19:07:43 2007 UTC vs.
Revision 1.18 by root, Thu Nov 1 11:55:54 2007 UTC

… …
31#define EV_H 31#define EV_H
32 32
33typedef double ev_tstamp; 33typedef double ev_tstamp;
34 34
35/* eventmask, revents, events... */ 35/* eventmask, revents, events... */
36#define EV_UNDEF -1 /* guaranteed to be invalid */ 36#define EV_UNDEF -1 /* guaranteed to be invalid */
37#define EV_NONE 0x00 37#define EV_NONE 0x00
38#define EV_READ 0x01 38#define EV_READ 0x01
39#define EV_WRITE 0x02 39#define EV_WRITE 0x02
40#define EV_TIMEOUT 0x04 40#define EV_TIMEOUT 0x000100
41#define EV_PERIODIC 0x000200
41#define EV_SIGNAL 0x08 42#define EV_SIGNAL 0x000400
42#define EV_IDLE 0x10 43#define EV_IDLE 0x000800
43#define EV_CHECK 0x20 44#define EV_CHECK 0x001000
44#define EV_PREPARE 0x40 45#define EV_PREPARE 0x002000
45#define EV_CHILD 0x80 46#define EV_CHILD 0x004000
46#define EV_ERROR (0xff|0x8000) 47#define EV_ERROR 0x800000 /* sent when an error occurs */
47 48
48/* can be used to add custom fields to all watchers */ 49/* can be used to add custom fields to all watchers */
49#ifndef EV_COMMON 50#ifndef EV_COMMON
50# define EV_COMMON void *data 51# define EV_COMMON void *data
51#endif 52#endif
52#ifndef EV_PROTOTYPES 53#ifndef EV_PROTOTYPES
53# define EV_PROTOTYPES 1 54# define EV_PROTOTYPES 1
54#endif 55#endif
56
57#define EV_VERSION_MAJOR 1
58#define EV_VERSION_MINOR 1
55 59
56/* 60/*
57 * struct member types: 61 * struct member types:
58 * private: you can look at them, but not change them, and they might not mean anything to you. 62 * private: you can look at them, but not change them, and they might not mean anything to you.
59 * ro: can be read anytime, but only changed when the watcher isn't active 63 * ro: can be read anytime, but only changed when the watcher isn't active
… …
89struct ev_watcher_time { 93struct ev_watcher_time {
90 EV_WATCHER_TIME (ev_watcher_time); 94 EV_WATCHER_TIME (ev_watcher_time);
91}; 95};
92 96
93/* invoked after a specific time, repeatable (based on monotonic clock) */ 97/* invoked after a specific time, repeatable (based on monotonic clock) */
98/* revent EV_TIMEOUT */
94struct ev_timer 99struct ev_timer
95{ 100{
96 EV_WATCHER_TIME (ev_timer); 101 EV_WATCHER_TIME (ev_timer);
97 102
98 ev_tstamp repeat; /* rw */ 103 ev_tstamp repeat; /* rw */
99}; 104};
100 105
101/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */ 106/* invoked at some specific time, possibly repeating at regular intervals (based on UTC) */
107/* revent EV_PERIODIC */
102struct ev_periodic 108struct ev_periodic
103{ 109{
104 EV_WATCHER_TIME (ev_periodic); 110 EV_WATCHER_TIME (ev_periodic);
105 111
106 ev_tstamp interval; /* rw */ 112 ev_tstamp interval; /* rw */
107}; 113};
108 114
109/* invoked when fd is either EV_READable or EV_WRITEable */ 115/* invoked when fd is either EV_READable or EV_WRITEable */
116/* revent EV_READ, EV_WRITE */
110struct ev_io 117struct ev_io
111{ 118{
112 EV_WATCHER_LIST (ev_io); 119 EV_WATCHER_LIST (ev_io);
113 120
114 int fd; /* ro */ 121 int fd; /* ro */
115 int events; /* ro */ 122 int events; /* ro */
116}; 123};
117 124
118/* invoked when the given signal has been received */ 125/* invoked when the given signal has been received */
126/* revent EV_SIGNAL */
119struct ev_signal 127struct ev_signal
120{ 128{
121 EV_WATCHER_LIST (ev_signal); 129 EV_WATCHER_LIST (ev_signal);
122 130
123 int signum; /* ro */ 131 int signum; /* ro */
124}; 132};
125 133
126/* invoked when the nothing else needs to be done, keeps the process from blocking */ 134/* invoked when the nothing else needs to be done, keeps the process from blocking */
135/* revent EV_IDLE */
127struct ev_idle 136struct ev_idle
128{ 137{
129 EV_WATCHER (ev_idle); 138 EV_WATCHER (ev_idle);
130}; 139};
131 140
132/* invoked for each run of the mainloop, just before the blocking call */ 141/* invoked for each run of the mainloop, just before the blocking call */
133/* you can still change events in any way you like */ 142/* you can still change events in any way you like */
143/* revent EV_PREPARE */
134struct ev_prepare 144struct ev_prepare
135{ 145{
136 EV_WATCHER (ev_prepare); 146 EV_WATCHER (ev_prepare);
137}; 147};
138 148
139/* invoked for each run of the mainloop, just after the blocking call */ 149/* invoked for each run of the mainloop, just after the blocking call */
150/* revent EV_CHECK */
140struct ev_check 151struct ev_check
141{ 152{
142 EV_WATCHER (ev_check); 153 EV_WATCHER (ev_check);
143}; 154};
144 155
145/* invoked when sigchld is received and waitpid indicates the givne pid */ 156/* invoked when sigchld is received and waitpid indicates the givne pid */
157/* revent EV_CHILD */
146struct ev_child 158struct ev_child
147{ 159{
148 EV_WATCHER_LIST (ev_child); 160 EV_WATCHER_LIST (ev_child);
149 161
150 int pid; /* ro */ 162 int pid; /* ro */
151 int status; /* holds the exit status, use the macros from sys/wait.h */ 163 int status; /* rw, holds the exit status, use the macros from sys/wait.h */
152}; 164};
153 165
154#define EVMETHOD_NONE 0 166#define EVMETHOD_NONE 0
155#define EVMETHOD_SELECT 1 167#define EVMETHOD_SELECT 1
156#define EVMETHOD_EPOLL 2 168#define EVMETHOD_EPOLL 2
157#if EV_PROTOTYPES 169#if EV_PROTOTYPES
158extern int ev_method; 170extern int ev_method;
159int ev_init (int flags); /* returns ev_method */ 171int ev_init (int flags); /* returns ev_method */
172int ev_version_major (void);
173int ev_version_minor (void);
160 174
161/* these three calls are suitable for plugging into pthread_atfork */ 175/* these three calls are suitable for plugging into pthread_atfork */
162void ev_prefork (void); 176void ev_fork_prepare (void);
163void ev_postfork_parent (void); 177void ev_fork_parent (void);
164void ev_postfork_child (void); 178void ev_fork_child (void);
165 179
166extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */ 180extern ev_tstamp ev_now; /* time w.r.t. timers and the eventloop, updated after each poll */
167ev_tstamp ev_time (void); 181ev_tstamp ev_time (void);
168#endif 182#endif
169 183
… …
177/* if timeout is < 0, do wait indefinitely */ 191/* if timeout is < 0, do wait indefinitely */
178void ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg); 192void ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg);
179#endif 193#endif
180 194
181/* these may evaluate ev multiple times, and the other arguments at most once */ 195/* these may evaluate ev multiple times, and the other arguments at most once */
182/* either use evw_init + evXXX_set, or the evXXX_init macro, below, to first initialise a watcher */ 196/* either use ev_watcher_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
183#define evw_init(ev,cb_) do { (ev)->active = 0; (ev)->pending = 0; (ev)->cb = (cb_); } while (0) 197#define ev_watcher_init(ev,cb_) do { (ev)->active = 0; (ev)->pending = 0; (ev)->cb = (cb_); } while (0)
184 198
185#define evio_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0) 199#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_); } while (0)
186#define evtimer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0) 200#define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0)
187#define evperiodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0) 201#define ev_periodic_set(ev,at_,interval_) do { (ev)->at = (at_); (ev)->interval = (interval_); } while (0)
188#define evsignal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0) 202#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
189#define evidle_set(ev) /* nop, yes, this is a serious in-joke */ 203#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
190#define evprepare_set(ev) /* nop, yes, this is a serious in-joke */ 204#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
191#define evcheck_set(ev) /* nop, yes, this is a serious in-joke */ 205#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
192#define evchild_set(ev,pid_) do { (ev)->pid = (pid_); } while (0) 206#define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0)
193 207
194#define evio_init(ev,cb,fd,events) do { evw_init ((ev), (cb)); evio_set ((ev),(fd),(events)); } while (0) 208#define ev_io_init(ev,cb,fd,events) do { ev_watcher_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
195#define evtimer_init(ev,cb,after,repeat) do { evw_init ((ev), (cb)); evtimer_set ((ev),(after),(repeat)); } while (0) 209#define ev_timer_init(ev,cb,after,repeat) do { ev_watcher_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
196#define evperiodic_init(ev,cb,at,interval) do { evw_init ((ev), (cb)); evperiodic_set ((ev),(at),(interval)); } while (0) 210#define ev_periodic_init(ev,cb,at,interval) do { ev_watcher_init ((ev), (cb)); ev_periodic_set ((ev),(at),(interval)); } while (0)
197#define evsignal_init(ev,cb,signum) do { evw_init ((ev), (cb)); evsignal_set ((ev), (signum)); } while (0) 211#define ev_signal_init(ev,cb,signum) do { ev_watcher_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
198#define evidle_init(ev,cb) do { evw_init ((ev), (cb)); evidle_set ((ev)); } while (0) 212#define ev_idle_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
199#define evprepare_init(ev,cb) do { evw_init ((ev), (cb)); evprepare_set ((ev)); } while (0) 213#define ev_prepare_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
200#define evcheck_init(ev,cb) do { evw_init ((ev), (cb)); evcheck_set ((ev)); } while (0) 214#define ev_check_init(ev,cb) do { ev_watcher_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
201#define evchild_init(ev,cb,pid) do { evw_init ((ev), (cb)); evchild_set ((ev),(pid)); } while (0) 215#define ev_child_init(ev,cb,pid) do { ev_watcher_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0)
202 216
203#define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */ 217#define ev_is_active(ev) (0 + (ev)->active) /* true when the watcher has been started */
204 218
205/* stopping (enabling, adding) a watcher does nothing if it is already running */ 219/* stopping (enabling, adding) a watcher does nothing if it is already running */
206/* stopping (disabling, deleting) a watcher does nothing unless its already running */ 220/* stopping (disabling, deleting) a watcher does nothing unless its already running */
207#if EV_PROTOTYPES 221#if EV_PROTOTYPES
208void evio_start (struct ev_io *w); 222void ev_io_start (struct ev_io *w);
209void evio_stop (struct ev_io *w); 223void ev_io_stop (struct ev_io *w);
210 224
211void evtimer_start (struct ev_timer *w); 225void ev_timer_start (struct ev_timer *w);
212void evtimer_stop (struct ev_timer *w); 226void ev_timer_stop (struct ev_timer *w);
213void evtimer_again (struct ev_timer *w); /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */ 227void ev_timer_again (struct ev_timer *w); /* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
214 228
215void evperiodic_start (struct ev_periodic *w); 229void ev_periodic_start (struct ev_periodic *w);
216void evperiodic_stop (struct ev_periodic *w); 230void ev_periodic_stop (struct ev_periodic *w);
217 231
218void evsignal_start (struct ev_signal *w); 232void ev_signal_start (struct ev_signal *w);
219void evsignal_stop (struct ev_signal *w); 233void ev_signal_stop (struct ev_signal *w);
220 234
221void evidle_start (struct ev_idle *w); 235void ev_idle_start (struct ev_idle *w);
222void evidle_stop (struct ev_idle *w); 236void ev_idle_stop (struct ev_idle *w);
223 237
224void evprepare_start (struct ev_prepare *w); 238void ev_prepare_start (struct ev_prepare *w);
225void evprepare_stop (struct ev_prepare *w); 239void ev_prepare_stop (struct ev_prepare *w);
226 240
227void evcheck_start (struct ev_check *w); 241void ev_check_start (struct ev_check *w);
228void evcheck_stop (struct ev_check *w); 242void ev_check_stop (struct ev_check *w);
229 243
230void evchild_start (struct ev_child *w); 244void ev_child_start (struct ev_child *w);
231void evchild_stop (struct ev_child *w); 245void ev_child_stop (struct ev_child *w);
232#endif 246#endif
233 247
234#endif 248#endif
235 249

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines