1/*
2 * Copyright (c) 2005 by Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (c) 1995-1999 by Internet Software Consortium
4 *
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.
8 *
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.
16 */
17
18/* eventlib_p.h - private interfaces for eventlib
19 * vix 09sep95 [initial]
20 *
| 1/*
2 * Copyright (c) 2005 by Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (c) 1995-1999 by Internet Software Consortium
4 *
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.
8 *
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.
16 */
17
18/* eventlib_p.h - private interfaces for eventlib
19 * vix 09sep95 [initial]
20 *
|
51
52#define NEW(p) if (((p) = memget(sizeof *(p))) != NULL) \
53 FILL(p); \
54 else \
55 (void)NULL;
56#define OKNEW(p) if (!((p) = memget(sizeof *(p)))) { \
57 errno = ENOMEM; \
58 return (-1); \
59 } else \
60 FILL(p)
61#define FREE(p) memput((p), sizeof *(p))
62
63#if EVENTLIB_DEBUG
64#define FILL(p) memset((p), 0xF5, sizeof *(p))
65#else
66#define FILL(p)
67#endif
68
69#ifdef USE_POLL
70#ifdef HAVE_STROPTS_H
71#include <stropts.h>
72#endif
73#include <poll.h>
74#endif /* USE_POLL */
75
76typedef struct evConn {
77 evConnFunc func;
78 void * uap;
79 int fd;
80 int flags;
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. */
84 evFileID file;
85 struct evConn * prev;
86 struct evConn * next;
87} evConn;
88
89#ifndef _LIBC
90typedef struct evAccept {
91 int fd;
92 union {
93 struct sockaddr sa;
94 struct sockaddr_in in;
95#ifndef NO_SOCKADDR_UN
96 struct sockaddr_un un;
97#endif
98 } la;
99 ISC_SOCKLEN_T lalen;
100 union {
101 struct sockaddr sa;
102 struct sockaddr_in in;
103#ifndef NO_SOCKADDR_UN
104 struct sockaddr_un un;
105#endif
106 } ra;
107 ISC_SOCKLEN_T ralen;
108 int ioErrno;
109 evConn * conn;
110 LINK(struct evAccept) link;
111} evAccept;
112
113typedef struct evFile {
114 evFileFunc func;
115 void * uap;
116 int fd;
117 int eventmask;
118 int preemptive;
119 struct evFile * prev;
120 struct evFile * next;
121 struct evFile * fdprev;
122 struct evFile * fdnext;
123} evFile;
124
125typedef struct evStream {
126 evStreamFunc func;
127 void * uap;
128 evFileID file;
129 evTimerID timer;
130 int flags;
131#define EV_STR_TIMEROK 0x0001 /* IFF timer valid. */
132 int fd;
133 struct iovec * iovOrig;
134 int iovOrigCount;
135 struct iovec * iovCur;
136 int iovCurCount;
137 int ioTotal;
138 int ioDone;
139 int ioErrno;
140 struct evStream *prevDone, *nextDone;
141 struct evStream *prev, *next;
142} evStream;
143
144typedef struct evTimer {
145 evTimerFunc func;
146 void * uap;
147 struct timespec due, inter;
148 int index;
149 int mode;
150#define EV_TMR_RATE 1
151} evTimer;
152
153typedef struct evWait {
154 evWaitFunc func;
155 void * uap;
156 const void * tag;
157 struct evWait * next;
158} evWait;
159
160typedef struct evWaitList {
161 evWait * first;
162 evWait * last;
163 struct evWaitList * prev;
164 struct evWaitList * next;
165} evWaitList;
166
167typedef struct evEvent_p {
168 enum { Accept, File, Stream, Timer, Wait, Free, Null } type;
169 union {
170 struct { evAccept *this; } accept;
171 struct { evFile *this; int eventmask; } file;
172 struct { evStream *this; } stream;
173 struct { evTimer *this; } timer;
174 struct { evWait *this; } wait;
175 struct { struct evEvent_p *next; } free;
176 struct { const void *placeholder; } null;
177 } u;
178} evEvent_p;
179#endif
180
181#ifdef USE_POLL
182typedef struct {
183 void *ctx; /* pointer to the evContext_p */
184 uint32_t type; /* READ, WRITE, EXCEPT, nonblk */
185 uint32_t result; /* 1 => revents, 0 => events */
186} __evEmulMask;
187
188#define emulMaskInit(ctx, field, ev, lastnext) \
189 ctx->field.ctx = ctx; \
190 ctx->field.type = ev; \
191 ctx->field.result = lastnext;
192
193extern short *__fd_eventfield(int fd, __evEmulMask *maskp);
194extern short __poll_event(__evEmulMask *maskp);
195extern void __fd_clr(int fd, __evEmulMask *maskp);
196extern void __fd_set(int fd, __evEmulMask *maskp);
197
198#undef FD_ZERO
199#define FD_ZERO(maskp)
200
201#undef FD_SET
202#define FD_SET(fd, maskp) \
203 __fd_set(fd, maskp)
204
205#undef FD_CLR
206#define FD_CLR(fd, maskp) \
207 __fd_clr(fd, maskp)
208
209#undef FD_ISSET
210#define FD_ISSET(fd, maskp) \
211 ((*__fd_eventfield(fd, maskp) & __poll_event(maskp)) != 0)
212
213#endif /* USE_POLL */
214
215#ifndef _LIBC
216typedef struct {
217 /* Global. */
218 const evEvent_p *cur;
219 /* Debugging. */
220 int debug;
221 FILE *output;
222 /* Connections. */
223 evConn *conns;
224 LIST(evAccept) accepts;
225 /* Files. */
226 evFile *files, *fdNext;
227#ifndef USE_POLL
228 fd_set rdLast, rdNext;
229 fd_set wrLast, wrNext;
230 fd_set exLast, exNext;
231 fd_set nonblockBefore;
232 int fdMax, fdCount, highestFD;
233 evFile *fdTable[FD_SETSIZE];
234#else
235 struct pollfd *pollfds; /* Allocated as needed */
236 evFile **fdTable; /* Ditto */
237 int maxnfds; /* # elements in above */
238 int firstfd; /* First active fd */
239 int fdMax; /* Last active fd */
240 int fdCount; /* # fd:s with I/O */
241 int highestFD; /* max fd allowed by OS */
242 __evEmulMask rdLast, rdNext;
243 __evEmulMask wrLast, wrNext;
244 __evEmulMask exLast, exNext;
245 __evEmulMask nonblockBefore;
246#endif /* USE_POLL */
247#ifdef EVENTLIB_TIME_CHECKS
248 struct timespec lastSelectTime;
249 int lastFdCount;
250#endif
251 /* Streams. */
252 evStream *streams;
253 evStream *strDone, *strLast;
254 /* Timers. */
255 struct timespec lastEventTime;
256 heap_context timers;
257 /* Waits. */
258 evWaitList *waitLists;
259 evWaitList waitDone;
260} evContext_p;
261
262/* eventlib.c */
263#define evPrintf __evPrintf
264void evPrintf(const evContext_p *ctx, int level, const char *fmt, ...)
265 ISC_FORMAT_PRINTF(3, 4);
266
267#ifdef USE_POLL
268extern int evPollfdRealloc(evContext_p *ctx, int pollfd_chunk_size, int fd);
269#endif /* USE_POLL */
270
271/* ev_timers.c */
272#define evCreateTimers __evCreateTimers
273heap_context evCreateTimers(const evContext_p *);
274#define evDestroyTimers __evDestroyTimers
275void evDestroyTimers(const evContext_p *);
276
277/* ev_waits.c */
278#define evFreeWait __evFreeWait
279evWait *evFreeWait(evContext_p *ctx, evWait *old);
280#endif
281
282/* Global options */
283#ifndef _LIBC
284extern int __evOptMonoTime;
285#endif
286
287#endif /*_EVENTLIB_P_H*/
| 53
54#define NEW(p) if (((p) = memget(sizeof *(p))) != NULL) \
55 FILL(p); \
56 else \
57 (void)NULL;
58#define OKNEW(p) if (!((p) = memget(sizeof *(p)))) { \
59 errno = ENOMEM; \
60 return (-1); \
61 } else \
62 FILL(p)
63#define FREE(p) memput((p), sizeof *(p))
64
65#if EVENTLIB_DEBUG
66#define FILL(p) memset((p), 0xF5, sizeof *(p))
67#else
68#define FILL(p)
69#endif
70
71#ifdef USE_POLL
72#ifdef HAVE_STROPTS_H
73#include <stropts.h>
74#endif
75#include <poll.h>
76#endif /* USE_POLL */
77
78typedef struct evConn {
79 evConnFunc func;
80 void * uap;
81 int fd;
82 int flags;
83#define EV_CONN_LISTEN 0x0001 /* Connection is a listener. */
84#define EV_CONN_SELECTED 0x0002 /* evSelectFD(conn->file). */
85#define EV_CONN_BLOCK 0x0004 /* Listener fd was blocking. */
86 evFileID file;
87 struct evConn * prev;
88 struct evConn * next;
89} evConn;
90
91#ifndef _LIBC
92typedef struct evAccept {
93 int fd;
94 union {
95 struct sockaddr sa;
96 struct sockaddr_in in;
97#ifndef NO_SOCKADDR_UN
98 struct sockaddr_un un;
99#endif
100 } la;
101 ISC_SOCKLEN_T lalen;
102 union {
103 struct sockaddr sa;
104 struct sockaddr_in in;
105#ifndef NO_SOCKADDR_UN
106 struct sockaddr_un un;
107#endif
108 } ra;
109 ISC_SOCKLEN_T ralen;
110 int ioErrno;
111 evConn * conn;
112 LINK(struct evAccept) link;
113} evAccept;
114
115typedef struct evFile {
116 evFileFunc func;
117 void * uap;
118 int fd;
119 int eventmask;
120 int preemptive;
121 struct evFile * prev;
122 struct evFile * next;
123 struct evFile * fdprev;
124 struct evFile * fdnext;
125} evFile;
126
127typedef struct evStream {
128 evStreamFunc func;
129 void * uap;
130 evFileID file;
131 evTimerID timer;
132 int flags;
133#define EV_STR_TIMEROK 0x0001 /* IFF timer valid. */
134 int fd;
135 struct iovec * iovOrig;
136 int iovOrigCount;
137 struct iovec * iovCur;
138 int iovCurCount;
139 int ioTotal;
140 int ioDone;
141 int ioErrno;
142 struct evStream *prevDone, *nextDone;
143 struct evStream *prev, *next;
144} evStream;
145
146typedef struct evTimer {
147 evTimerFunc func;
148 void * uap;
149 struct timespec due, inter;
150 int index;
151 int mode;
152#define EV_TMR_RATE 1
153} evTimer;
154
155typedef struct evWait {
156 evWaitFunc func;
157 void * uap;
158 const void * tag;
159 struct evWait * next;
160} evWait;
161
162typedef struct evWaitList {
163 evWait * first;
164 evWait * last;
165 struct evWaitList * prev;
166 struct evWaitList * next;
167} evWaitList;
168
169typedef struct evEvent_p {
170 enum { Accept, File, Stream, Timer, Wait, Free, Null } type;
171 union {
172 struct { evAccept *this; } accept;
173 struct { evFile *this; int eventmask; } file;
174 struct { evStream *this; } stream;
175 struct { evTimer *this; } timer;
176 struct { evWait *this; } wait;
177 struct { struct evEvent_p *next; } free;
178 struct { const void *placeholder; } null;
179 } u;
180} evEvent_p;
181#endif
182
183#ifdef USE_POLL
184typedef struct {
185 void *ctx; /* pointer to the evContext_p */
186 uint32_t type; /* READ, WRITE, EXCEPT, nonblk */
187 uint32_t result; /* 1 => revents, 0 => events */
188} __evEmulMask;
189
190#define emulMaskInit(ctx, field, ev, lastnext) \
191 ctx->field.ctx = ctx; \
192 ctx->field.type = ev; \
193 ctx->field.result = lastnext;
194
195extern short *__fd_eventfield(int fd, __evEmulMask *maskp);
196extern short __poll_event(__evEmulMask *maskp);
197extern void __fd_clr(int fd, __evEmulMask *maskp);
198extern void __fd_set(int fd, __evEmulMask *maskp);
199
200#undef FD_ZERO
201#define FD_ZERO(maskp)
202
203#undef FD_SET
204#define FD_SET(fd, maskp) \
205 __fd_set(fd, maskp)
206
207#undef FD_CLR
208#define FD_CLR(fd, maskp) \
209 __fd_clr(fd, maskp)
210
211#undef FD_ISSET
212#define FD_ISSET(fd, maskp) \
213 ((*__fd_eventfield(fd, maskp) & __poll_event(maskp)) != 0)
214
215#endif /* USE_POLL */
216
217#ifndef _LIBC
218typedef struct {
219 /* Global. */
220 const evEvent_p *cur;
221 /* Debugging. */
222 int debug;
223 FILE *output;
224 /* Connections. */
225 evConn *conns;
226 LIST(evAccept) accepts;
227 /* Files. */
228 evFile *files, *fdNext;
229#ifndef USE_POLL
230 fd_set rdLast, rdNext;
231 fd_set wrLast, wrNext;
232 fd_set exLast, exNext;
233 fd_set nonblockBefore;
234 int fdMax, fdCount, highestFD;
235 evFile *fdTable[FD_SETSIZE];
236#else
237 struct pollfd *pollfds; /* Allocated as needed */
238 evFile **fdTable; /* Ditto */
239 int maxnfds; /* # elements in above */
240 int firstfd; /* First active fd */
241 int fdMax; /* Last active fd */
242 int fdCount; /* # fd:s with I/O */
243 int highestFD; /* max fd allowed by OS */
244 __evEmulMask rdLast, rdNext;
245 __evEmulMask wrLast, wrNext;
246 __evEmulMask exLast, exNext;
247 __evEmulMask nonblockBefore;
248#endif /* USE_POLL */
249#ifdef EVENTLIB_TIME_CHECKS
250 struct timespec lastSelectTime;
251 int lastFdCount;
252#endif
253 /* Streams. */
254 evStream *streams;
255 evStream *strDone, *strLast;
256 /* Timers. */
257 struct timespec lastEventTime;
258 heap_context timers;
259 /* Waits. */
260 evWaitList *waitLists;
261 evWaitList waitDone;
262} evContext_p;
263
264/* eventlib.c */
265#define evPrintf __evPrintf
266void evPrintf(const evContext_p *ctx, int level, const char *fmt, ...)
267 ISC_FORMAT_PRINTF(3, 4);
268
269#ifdef USE_POLL
270extern int evPollfdRealloc(evContext_p *ctx, int pollfd_chunk_size, int fd);
271#endif /* USE_POLL */
272
273/* ev_timers.c */
274#define evCreateTimers __evCreateTimers
275heap_context evCreateTimers(const evContext_p *);
276#define evDestroyTimers __evDestroyTimers
277void evDestroyTimers(const evContext_p *);
278
279/* ev_waits.c */
280#define evFreeWait __evFreeWait
281evWait *evFreeWait(evContext_p *ctx, evWait *old);
282#endif
283
284/* Global options */
285#ifndef _LIBC
286extern int __evOptMonoTime;
287#endif
288
289#endif /*_EVENTLIB_P_H*/
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