1 /*	$NetBSD: eventlib.h,v 1.3 2009/04/12 17:07:16 christos Exp $	*/
2 
3 /*
4  * Copyright (C) 2004, 2005, 2008  Internet Systems Consortium, Inc. ("ISC")
5  * Copyright (C) 1995-1999, 2001, 2003  Internet Software Consortium.
6  *
7  * Permission to use, copy, modify, and/or distribute this software for any
8  * purpose with or without fee is hereby granted, provided that the above
9  * copyright notice and this permission notice appear in all copies.
10  *
11  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17  * PERFORMANCE OF THIS SOFTWARE.
18  */
19 
20 /* eventlib.h - exported interfaces for eventlib
21  * vix 09sep95 [initial]
22  *
23  * Id: eventlib.h,v 1.7 2008/11/14 02:36:51 marka Exp
24  */
25 
26 #ifndef _EVENTLIB_H
27 #define _EVENTLIB_H
28 
29 #include <sys/types.h>
30 #include <sys/uio.h>
31 #include <sys/time.h>
32 #include <stdio.h>
33 
34 #ifndef __P
35 # define __EVENTLIB_P_DEFINED
36 # ifdef __STDC__
37 #  define __P(x) x
38 # else
39 #  define __P(x) ()
40 # endif
41 #endif
42 
43 /* In the absence of branded types... */
44 typedef struct { void *opaque; } evConnID;
45 typedef struct { void *opaque; } evFileID;
46 typedef struct { void *opaque; } evStreamID;
47 typedef struct { void *opaque; } evTimerID;
48 typedef struct { void *opaque; } evWaitID;
49 typedef struct { void *opaque; } evContext;
50 typedef struct { void *opaque; } evEvent;
51 
52 #define	evInitID(id) ((id)->opaque = NULL)
53 #define	evTestID(id) ((id).opaque != NULL)
54 
55 typedef void (*evConnFunc)__P((evContext, void *, int, const void *, int,
56 			       const void *, int));
57 typedef void (*evFileFunc)__P((evContext, void *, int, int));
58 typedef	void (*evStreamFunc)__P((evContext, void *, int, int));
59 typedef void (*evTimerFunc)__P((evContext, void *,
60 				struct timespec, struct timespec));
61 typedef	void (*evWaitFunc)__P((evContext, void *, const void *));
62 
63 typedef	struct { unsigned char mask[256/8]; } evByteMask;
64 #define	EV_BYTEMASK_BYTE(b) ((b) / 8)
65 #define	EV_BYTEMASK_MASK(b) (1 << ((b) % 8))
66 #define	EV_BYTEMASK_SET(bm, b) \
67 	((bm).mask[EV_BYTEMASK_BYTE(b)] |= EV_BYTEMASK_MASK(b))
68 #define	EV_BYTEMASK_CLR(bm, b) \
69 	((bm).mask[EV_BYTEMASK_BYTE(b)] &= ~EV_BYTEMASK_MASK(b))
70 #define	EV_BYTEMASK_TST(bm, b) \
71 	((bm).mask[EV_BYTEMASK_BYTE(b)] & EV_BYTEMASK_MASK(b))
72 
73 #define	EV_POLL		1
74 #define	EV_WAIT		2
75 #define	EV_NULL		4
76 
77 #define	EV_READ		1
78 #define	EV_WRITE	2
79 #define	EV_EXCEPT	4
80 
81 #define EV_WASNONBLOCKING 8	/* Internal library use. */
82 
83 /* eventlib.c */
84 #define evCreate	__evCreate
85 #define evSetDebug	__evSetDebug
86 #define evDestroy	__evDestroy
87 #define evGetNext	__evGetNext
88 #define evDispatch	__evDispatch
89 #define evDrop		__evDrop
90 #define evMainLoop	__evMainLoop
91 #define evHighestFD	__evHighestFD
92 #define evGetOption	__evGetOption
93 #define evSetOption	__evSetOption
94 
95 int  evCreate __P((evContext *));
96 void evSetDebug __P((evContext, int, FILE *));
97 int  evDestroy __P((evContext));
98 int  evGetNext __P((evContext, evEvent *, int));
99 int  evDispatch __P((evContext, evEvent));
100 void evDrop __P((evContext, evEvent));
101 int  evMainLoop __P((evContext));
102 int  evHighestFD __P((evContext));
103 int  evGetOption __P((evContext *, const char *, int *));
104 int  evSetOption __P((evContext *, const char *, int));
105 
106 /* ev_connects.c */
107 #define evListen	__evListen
108 #define evConnect	__evConnect
109 #define evCancelConn	__evCancelConn
110 #define evHold		__evHold
111 #define evUnhold	__evUnhold
112 #define evTryAccept	__evTryAccept
113 
114 int evListen __P((evContext, int, int, evConnFunc, void *, evConnID *));
115 int evConnect __P((evContext, int, const void *, int,
116 		   evConnFunc, void *, evConnID *));
117 int evCancelConn __P((evContext, evConnID));
118 int evHold __P((evContext, evConnID));
119 int evUnhold __P((evContext, evConnID));
120 int evTryAccept __P((evContext, evConnID, int *));
121 
122 /* ev_files.c */
123 #define evSelectFD	__evSelectFD
124 #define evDeselectFD	__evDeselectFD
125 
126 int evSelectFD __P((evContext, int, int, evFileFunc, void *, evFileID *));
127 int evDeselectFD __P((evContext, evFileID));
128 
129 /* ev_streams.c */
130 #define evConsIovec	__evConsIovec
131 #define evWrite		__evWrite
132 #define evRead		__evRead
133 #define evTimeRW	__evTimeRW
134 #define evUntimeRW	__evUntimeRW
135 #define	evCancelRW	__evCancelRW
136 
137 struct iovec evConsIovec __P((void *, size_t));
138 int evWrite __P((evContext, int, const struct iovec *, int,
139 		 evStreamFunc func, void *, evStreamID *));
140 int evRead __P((evContext, int, const struct iovec *, int,
141 		evStreamFunc func, void *, evStreamID *));
142 int evTimeRW __P((evContext, evStreamID, evTimerID timer));
143 int evUntimeRW __P((evContext, evStreamID));
144 int evCancelRW __P((evContext, evStreamID));
145 
146 /* ev_timers.c */
147 #define evConsTime	__evConsTime
148 #define evAddTime	__evAddTime
149 #define evSubTime	__evSubTime
150 #define evCmpTime	__evCmpTime
151 #define	evTimeSpec	__evTimeSpec
152 #define	evTimeVal	__evTimeVal
153 
154 #define evNowTime		__evNowTime
155 #define evUTCTime		__evUTCTime
156 #define evLastEventTime		__evLastEventTime
157 #define evSetTimer		__evSetTimer
158 #define evClearTimer		__evClearTimer
159 #define evConfigTimer		__evConfigTimer
160 #define evResetTimer		__evResetTimer
161 #define evSetIdleTimer		__evSetIdleTimer
162 #define evClearIdleTimer	__evClearIdleTimer
163 #define evResetIdleTimer	__evResetIdleTimer
164 #define evTouchIdleTimer	__evTouchIdleTimer
165 
166 struct timespec evConsTime __P((time_t sec, long nsec));
167 struct timespec evAddTime __P((struct timespec, struct timespec));
168 struct timespec evSubTime __P((struct timespec, struct timespec));
169 struct timespec evNowTime __P((void));
170 struct timespec evUTCTime __P((void));
171 struct timespec evLastEventTime __P((evContext));
172 struct timespec evTimeSpec __P((struct timeval));
173 struct timeval evTimeVal __P((struct timespec));
174 int evCmpTime __P((struct timespec, struct timespec));
175 int evSetTimer __P((evContext, evTimerFunc, void *, struct timespec,
176 		    struct timespec, evTimerID *));
177 int evClearTimer __P((evContext, evTimerID));
178 int evConfigTimer __P((evContext, evTimerID, const char *param,
179 		      int value));
180 int evResetTimer __P((evContext, evTimerID, evTimerFunc, void *,
181 		      struct timespec, struct timespec));
182 int evSetIdleTimer __P((evContext, evTimerFunc, void *, struct timespec,
183 			evTimerID *));
184 int evClearIdleTimer __P((evContext, evTimerID));
185 int evResetIdleTimer __P((evContext, evTimerID, evTimerFunc, void *,
186 			  struct timespec));
187 int evTouchIdleTimer __P((evContext, evTimerID));
188 
189 /* ev_waits.c */
190 #define evWaitFor	__evWaitFor
191 #define evDo		__evDo
192 #define evUnwait	__evUnwait
193 #define evDefer		__evDefer
194 
195 int evWaitFor __P((evContext, const void *, evWaitFunc, void *, evWaitID *));
196 int evDo __P((evContext, const void *));
197 int evUnwait __P((evContext, evWaitID));
198 int evDefer __P((evContext, evWaitFunc, void *));
199 
200 #ifdef __EVENTLIB_P_DEFINED
201 # undef __P
202 #endif
203 
204 #endif /*_EVENTLIB_H*/
205 
206 /*! \file */
207