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
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
15 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 /* eventlib_p.h - private interfaces for eventlib
19 * vix 09sep95 [initial]
21 * $Id: eventlib_p.h,v 1.3.2.1.4.4 2006/03/10 00:17:21 marka Exp $
27 #include <sys/param.h>
28 #include <sys/types.h>
29 #include <sys/socket.h>
30 #include <netinet/in.h>
33 #define EVENTLIB_DEBUG 1
44 #include <isc/memcluster.h>
47 #define EV_MASK_ALL (EV_READ | EV_WRITE | EV_EXCEPT)
48 #define EV_ERR(e) return (errno = (e), -1)
49 #define OK(x) if ((x) < 0) EV_ERR(errno); else (void)NULL
50 #define OKFREE(x, y) if ((x) < 0) { FREE((y)); EV_ERR(errno); } \
53 #define NEW(p) if (((p) = memget(sizeof *(p))) != NULL) \
57 #define OKNEW(p) if (!((p) = memget(sizeof *(p)))) { \
62 #define FREE(p) memput((p), sizeof *(p))
65 #define FILL(p) memset((p), 0xF5, sizeof *(p))
77 typedef struct evConn {
82 #define EV_CONN_LISTEN 0x0001 /* Connection is a listener. */
83 #define EV_CONN_SELECTED 0x0002 /* evSelectFD(conn->file). */
84 #define EV_CONN_BLOCK 0x0004 /* Listener fd was blocking. */
91 typedef struct evAccept {
95 struct sockaddr_in in;
96 #ifndef NO_SOCKADDR_UN
97 struct sockaddr_un un;
103 struct sockaddr_in in;
104 #ifndef NO_SOCKADDR_UN
105 struct sockaddr_un un;
111 LINK(struct evAccept) link;
114 typedef struct evFile {
120 struct evFile * prev;
121 struct evFile * next;
122 struct evFile * fdprev;
123 struct evFile * fdnext;
126 typedef struct evStream {
132 #define EV_STR_TIMEROK 0x0001 /* IFF timer valid. */
134 struct iovec * iovOrig;
136 struct iovec * iovCur;
141 struct evStream *prevDone, *nextDone;
142 struct evStream *prev, *next;
145 typedef struct evTimer {
148 struct timespec due, inter;
151 #define EV_TMR_RATE 1
154 typedef struct evWait {
158 struct evWait * next;
161 typedef struct evWaitList {
164 struct evWaitList * prev;
165 struct evWaitList * next;
168 typedef struct evEvent_p {
169 enum { Accept, File, Stream, Timer, Wait, Free, Null } type;
171 struct { evAccept *this; } accept;
172 struct { evFile *this; int eventmask; } file;
173 struct { evStream *this; } stream;
174 struct { evTimer *this; } timer;
175 struct { evWait *this; } wait;
176 struct { struct evEvent_p *next; } free;
177 struct { const void *placeholder; } null;
184 void *ctx; /* pointer to the evContext_p */
185 uint32_t type; /* READ, WRITE, EXCEPT, nonblk */
186 uint32_t result; /* 1 => revents, 0 => events */
189 #define emulMaskInit(ctx, field, ev, lastnext) \
190 ctx->field.ctx = ctx; \
191 ctx->field.type = ev; \
192 ctx->field.result = lastnext;
194 extern short *__fd_eventfield(int fd, __evEmulMask *maskp);
195 extern short __poll_event(__evEmulMask *maskp);
196 extern void __fd_clr(int fd, __evEmulMask *maskp);
197 extern void __fd_set(int fd, __evEmulMask *maskp);
200 #define FD_ZERO(maskp)
203 #define FD_SET(fd, maskp) \
207 #define FD_CLR(fd, maskp) \
211 #define FD_ISSET(fd, maskp) \
212 ((*__fd_eventfield(fd, maskp) & __poll_event(maskp)) != 0)
214 #endif /* USE_POLL */
219 const evEvent_p *cur;
225 LIST(evAccept) accepts;
227 evFile *files, *fdNext;
229 fd_set rdLast, rdNext;
230 fd_set wrLast, wrNext;
231 fd_set exLast, exNext;
232 fd_set nonblockBefore;
233 int fdMax, fdCount, highestFD;
234 evFile *fdTable[FD_SETSIZE];
236 struct pollfd *pollfds; /* Allocated as needed */
237 evFile **fdTable; /* Ditto */
238 int maxnfds; /* # elements in above */
239 int firstfd; /* First active fd */
240 int fdMax; /* Last active fd */
241 int fdCount; /* # fd:s with I/O */
242 int highestFD; /* max fd allowed by OS */
243 __evEmulMask rdLast, rdNext;
244 __evEmulMask wrLast, wrNext;
245 __evEmulMask exLast, exNext;
246 __evEmulMask nonblockBefore;
247 #endif /* USE_POLL */
248 #ifdef EVENTLIB_TIME_CHECKS
249 struct timespec lastSelectTime;
254 evStream *strDone, *strLast;
256 struct timespec lastEventTime;
259 evWaitList *waitLists;
264 #define evPrintf __evPrintf
265 void evPrintf(const evContext_p *ctx, int level, const char *fmt, ...)
266 ISC_FORMAT_PRINTF(3, 4);
269 extern int evPollfdRealloc(evContext_p *ctx, int pollfd_chunk_size, int fd);
270 #endif /* USE_POLL */
273 #define evCreateTimers __evCreateTimers
274 heap_context evCreateTimers(const evContext_p *);
275 #define evDestroyTimers __evDestroyTimers
276 void evDestroyTimers(const evContext_p *);
279 #define evFreeWait __evFreeWait
280 evWait *evFreeWait(evContext_p *ctx, evWait *old);
285 extern int __evOptMonoTime;
288 #endif /*_EVENTLIB_P_H*/