1 /* $NetBSD: eventlib_p.h,v 1.1.1.1 2004/05/20 19:34:32 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC") 5 * Copyright (c) 1995-1999 by Internet Software Consortium 6 * 7 * Permission to use, copy, modify, and 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 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT 17 * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 /* eventlib_p.h - private interfaces for eventlib 21 * vix 09sep95 [initial] 22 * 23 * Id: eventlib_p.h,v 1.3.2.1.4.1 2004/03/09 08:33:43 marka Exp 24 */ 25 26 #ifndef _EVENTLIB_P_H 27 #define _EVENTLIB_P_H 28 29 #include <sys/param.h> 30 #include <sys/types.h> 31 #include <sys/socket.h> 32 #include <netinet/in.h> 33 #include <sys/un.h> 34 35 #define EVENTLIB_DEBUG 1 36 37 #include <errno.h> 38 #include <fcntl.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 43 #include <isc/heap.h> 44 #include <isc/list.h> 45 #include <isc/memcluster.h> 46 47 48 #define EV_MASK_ALL (EV_READ | EV_WRITE | EV_EXCEPT) 49 #define EV_ERR(e) return (errno = (e), -1) 50 #define OK(x) if ((x) < 0) EV_ERR(errno); else (void)NULL 51 52 53 #if HAVE_MEM_GET_SET 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 #else 72 73 #define NEW(p) p = malloc(sizeof *(p)); 74 #define OKNEW(p) if (!((p) = malloc(sizeof *(p)))) { errno = ENOMEM; return (-1); } 75 #define FREE(p) free(p) 76 #define FILL(p) 77 78 #endif 79 80 81 typedef struct evConn { 82 evConnFunc func; 83 void * uap; 84 int fd; 85 int flags; 86 #define EV_CONN_LISTEN 0x0001 /* Connection is a listener. */ 87 #define EV_CONN_SELECTED 0x0002 /* evSelectFD(conn->file). */ 88 #define EV_CONN_BLOCK 0x0004 /* Listener fd was blocking. */ 89 evFileID file; 90 struct evConn * prev; 91 struct evConn * next; 92 } evConn; 93 94 typedef struct evAccept { 95 int fd; 96 union { 97 struct sockaddr sa; 98 struct sockaddr_in in; 99 #ifndef NO_SOCKADDR_UN 100 struct sockaddr_un un; 101 #endif 102 } la; 103 socklen_t lalen; 104 union { 105 struct sockaddr sa; 106 struct sockaddr_in in; 107 #ifndef NO_SOCKADDR_UN 108 struct sockaddr_un un; 109 #endif 110 } ra; 111 socklen_t ralen; 112 int ioErrno; 113 evConn * conn; 114 LINK(struct evAccept) link; 115 } evAccept; 116 117 typedef struct evFile { 118 evFileFunc func; 119 void * uap; 120 int fd; 121 int eventmask; 122 int preemptive; 123 struct evFile * prev; 124 struct evFile * next; 125 struct evFile * fdprev; 126 struct evFile * fdnext; 127 } evFile; 128 129 typedef struct evStream { 130 evStreamFunc func; 131 void * uap; 132 evFileID file; 133 evTimerID timer; 134 int flags; 135 #define EV_STR_TIMEROK 0x0001 /* IFF timer valid. */ 136 int fd; 137 struct iovec * iovOrig; 138 int iovOrigCount; 139 struct iovec * iovCur; 140 int iovCurCount; 141 int ioTotal; 142 int ioDone; 143 int ioErrno; 144 struct evStream *prevDone, *nextDone; 145 struct evStream *prev, *next; 146 } evStream; 147 148 typedef struct evTimer { 149 evTimerFunc func; 150 void * uap; 151 struct timespec due, inter; 152 int index; 153 int mode; 154 #define EV_TMR_RATE 1 155 } evTimer; 156 157 typedef struct evWait { 158 evWaitFunc func; 159 void * uap; 160 const void * tag; 161 struct evWait * next; 162 } evWait; 163 164 typedef struct evWaitList { 165 evWait * first; 166 evWait * last; 167 struct evWaitList * prev; 168 struct evWaitList * next; 169 } evWaitList; 170 171 typedef struct evEvent_p { 172 enum { Accept, File, Stream, Timer, Wait, Free, Null } type; 173 union { 174 struct { evAccept *this; } accept; 175 struct { evFile *this; int eventmask; } file; 176 struct { evStream *this; } stream; 177 struct { evTimer *this; } timer; 178 struct { evWait *this; } wait; 179 struct { struct evEvent_p *next; } free; 180 struct { const void *placeholder; } null; 181 } u; 182 } evEvent_p; 183 184 typedef struct { 185 /* Global. */ 186 const evEvent_p *cur; 187 /* Debugging. */ 188 int debug; 189 FILE *output; 190 /* Connections. */ 191 evConn *conns; 192 LIST(evAccept) accepts; 193 /* Files. */ 194 evFile *files, *fdNext; 195 fd_set rdLast, rdNext; 196 fd_set wrLast, wrNext; 197 fd_set exLast, exNext; 198 fd_set nonblockBefore; 199 int fdMax, fdCount, highestFD; 200 evFile *fdTable[FD_SETSIZE]; 201 #ifdef EVENTLIB_TIME_CHECKS 202 struct timespec lastSelectTime; 203 int lastFdCount; 204 #endif 205 /* Streams. */ 206 evStream *streams; 207 evStream *strDone, *strLast; 208 /* Timers. */ 209 struct timespec lastEventTime; 210 heap_context timers; 211 /* Waits. */ 212 evWaitList *waitLists; 213 evWaitList waitDone; 214 } evContext_p; 215 216 /* eventlib.c */ 217 #define evPrintf __evPrintf 218 void evPrintf(const evContext_p *ctx, int level, const char *fmt, ...); 219 220 /* ev_timers.c */ 221 #define evCreateTimers __evCreateTimers 222 heap_context evCreateTimers(const evContext_p *); 223 #define evDestroyTimers __evDestroyTimers 224 void evDestroyTimers(const evContext_p *); 225 226 /* ev_waits.c */ 227 #define evFreeWait __evFreeWait 228 evWait *evFreeWait(evContext_p *ctx, evWait *old); 229 230 /* Global options */ 231 int __evOptMonoTime; 232 233 #endif /*_EVENTLIB_P_H*/ 234