2 * Copyright (c) 2005 by Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (c) 1995-1999 by Internet Software Consortium
5 * Permission to use, copy, modify, and distribute this software for any
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10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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19 * \brief private interfaces for eventlib
20 * \author vix 09sep95 [initial]
22 * $Id: eventlib_p.h,v 1.5.18.4 2006/03/10 00:20:08 marka Exp $
28 #include <sys/param.h>
29 #include <sys/types.h>
30 #include <sys/socket.h>
31 #include <netinet/in.h>
34 #define EVENTLIB_DEBUG 1
44 #include <isc/memcluster.h>
46 #define EV_MASK_ALL (EV_READ | EV_WRITE | EV_EXCEPT)
47 #define EV_ERR(e) return (errno = (e), -1)
48 #define OK(x) if ((x) < 0) EV_ERR(errno); else (void)NULL
49 #define OKFREE(x, y) if ((x) < 0) { FREE((y)); EV_ERR(errno); } \
52 #define NEW(p) if (((p) = memget(sizeof *(p))) != NULL) \
56 #define OKNEW(p) if (!((p) = memget(sizeof *(p)))) { \
61 #define FREE(p) memput((p), sizeof *(p))
64 #define FILL(p) memset((p), 0xF5, sizeof *(p))
76 typedef struct evConn {
81 #define EV_CONN_LISTEN 0x0001 /*%< Connection is a listener. */
82 #define EV_CONN_SELECTED 0x0002 /*%< evSelectFD(conn->file). */
83 #define EV_CONN_BLOCK 0x0004 /*%< Listener fd was blocking. */
89 typedef struct evAccept {
93 struct sockaddr_in in;
94 #ifndef NO_SOCKADDR_UN
95 struct sockaddr_un un;
101 struct sockaddr_in in;
102 #ifndef NO_SOCKADDR_UN
103 struct sockaddr_un un;
109 LINK(struct evAccept) link;
112 typedef struct evFile {
118 struct evFile * prev;
119 struct evFile * next;
120 struct evFile * fdprev;
121 struct evFile * fdnext;
124 typedef struct evStream {
130 #define EV_STR_TIMEROK 0x0001 /*%< IFF timer valid. */
132 struct iovec * iovOrig;
134 struct iovec * iovCur;
139 struct evStream *prevDone, *nextDone;
140 struct evStream *prev, *next;
143 typedef struct evTimer {
146 struct timespec due, inter;
149 #define EV_TMR_RATE 1
152 typedef struct evWait {
156 struct evWait * next;
159 typedef struct evWaitList {
162 struct evWaitList * prev;
163 struct evWaitList * next;
166 typedef struct evEvent_p {
167 enum { Accept, File, Stream, Timer, Wait, Free, Null } type;
169 struct { evAccept *this; } accept;
170 struct { evFile *this; int eventmask; } file;
171 struct { evStream *this; } stream;
172 struct { evTimer *this; } timer;
173 struct { evWait *this; } wait;
174 struct { struct evEvent_p *next; } free;
175 struct { const void *placeholder; } null;
181 void *ctx; /* pointer to the evContext_p */
182 uint32_t type; /* READ, WRITE, EXCEPT, nonblk */
183 uint32_t result; /* 1 => revents, 0 => events */
186 #define emulMaskInit(ctx, field, ev, lastnext) \
187 ctx->field.ctx = ctx; \
188 ctx->field.type = ev; \
189 ctx->field.result = lastnext;
191 extern short *__fd_eventfield(int fd, __evEmulMask *maskp);
192 extern short __poll_event(__evEmulMask *maskp);
193 extern void __fd_clr(int fd, __evEmulMask *maskp);
194 extern void __fd_set(int fd, __evEmulMask *maskp);
197 #define FD_ZERO(maskp)
200 #define FD_SET(fd, maskp) \
204 #define FD_CLR(fd, maskp) \
208 #define FD_ISSET(fd, maskp) \
209 ((*__fd_eventfield(fd, maskp) & __poll_event(maskp)) != 0)
211 #endif /* USE_POLL */
215 const evEvent_p *cur;
221 LIST(evAccept) accepts;
223 evFile *files, *fdNext;
225 fd_set rdLast, rdNext;
226 fd_set wrLast, wrNext;
227 fd_set exLast, exNext;
228 fd_set nonblockBefore;
229 int fdMax, fdCount, highestFD;
230 evFile *fdTable[FD_SETSIZE];
232 struct pollfd *pollfds; /* Allocated as needed */
233 evFile **fdTable; /* Ditto */
234 int maxnfds; /* # elements in above */
235 int firstfd; /* First active fd */
236 int fdMax; /* Last active fd */
237 int fdCount; /* # fd:s with I/O */
238 int highestFD; /* max fd allowed by OS */
239 __evEmulMask rdLast, rdNext;
240 __evEmulMask wrLast, wrNext;
241 __evEmulMask exLast, exNext;
242 __evEmulMask nonblockBefore;
243 #endif /* USE_POLL */
244 #ifdef EVENTLIB_TIME_CHECKS
245 struct timespec lastSelectTime;
250 evStream *strDone, *strLast;
252 struct timespec lastEventTime;
255 evWaitList *waitLists;
260 #define evPrintf __evPrintf
261 void evPrintf(const evContext_p *ctx, int level, const char *fmt, ...)
262 ISC_FORMAT_PRINTF(3, 4);
265 extern int evPollfdRealloc(evContext_p *ctx, int pollfd_chunk_size, int fd);
266 #endif /* USE_POLL */
269 #define evCreateTimers __evCreateTimers
270 heap_context evCreateTimers(const evContext_p *);
271 #define evDestroyTimers __evDestroyTimers
272 void evDestroyTimers(const evContext_p *);
275 #define evFreeWait __evFreeWait
276 evWait *evFreeWait(evContext_p *ctx, evWait *old);
279 extern int __evOptMonoTime;
281 #endif /*_EVENTLIB_P_H*/