291 lines
6.8 KiB
C
291 lines
6.8 KiB
C
/*
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* Copyright (c) 2005 by Internet Systems Consortium, Inc. ("ISC")
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* Copyright (c) 1995-1999 by Internet Software Consortium
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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* OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*! \file
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* \brief private interfaces for eventlib
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* \author vix 09sep95 [initial]
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*
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* $Id: eventlib_p.h,v 1.9 2006/03/09 23:57:56 marka Exp $
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* $FreeBSD$
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*/
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#ifndef _EVENTLIB_P_H
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#define _EVENTLIB_P_H
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <sys/un.h>
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#define EVENTLIB_DEBUG 1
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifndef _LIBC
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#include <isc/list.h>
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#include <isc/heap.h>
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#include <isc/memcluster.h>
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#endif
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#define EV_MASK_ALL (EV_READ | EV_WRITE | EV_EXCEPT)
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#define EV_ERR(e) return (errno = (e), -1)
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#define OK(x) if ((x) < 0) EV_ERR(errno); else (void)NULL
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#define OKFREE(x, y) if ((x) < 0) { FREE((y)); EV_ERR(errno); } \
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else (void)NULL
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#define NEW(p) if (((p) = memget(sizeof *(p))) != NULL) \
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FILL(p); \
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else \
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(void)NULL;
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#define OKNEW(p) if (!((p) = memget(sizeof *(p)))) { \
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errno = ENOMEM; \
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return (-1); \
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} else \
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FILL(p)
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#define FREE(p) memput((p), sizeof *(p))
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#if EVENTLIB_DEBUG
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#define FILL(p) memset((p), 0xF5, sizeof *(p))
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#else
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#define FILL(p)
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#endif
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#ifdef USE_POLL
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#ifdef HAVE_STROPTS_H
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#include <stropts.h>
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#endif
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#include <poll.h>
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#endif /* USE_POLL */
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typedef struct evConn {
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evConnFunc func;
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void * uap;
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int fd;
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int flags;
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#define EV_CONN_LISTEN 0x0001 /*%< Connection is a listener. */
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#define EV_CONN_SELECTED 0x0002 /*%< evSelectFD(conn->file). */
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#define EV_CONN_BLOCK 0x0004 /*%< Listener fd was blocking. */
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evFileID file;
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struct evConn * prev;
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struct evConn * next;
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} evConn;
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#ifndef _LIBC
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typedef struct evAccept {
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int fd;
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union {
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struct sockaddr sa;
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struct sockaddr_in in;
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#ifndef NO_SOCKADDR_UN
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struct sockaddr_un un;
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#endif
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} la;
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ISC_SOCKLEN_T lalen;
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union {
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struct sockaddr sa;
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struct sockaddr_in in;
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#ifndef NO_SOCKADDR_UN
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struct sockaddr_un un;
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#endif
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} ra;
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ISC_SOCKLEN_T ralen;
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int ioErrno;
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evConn * conn;
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LINK(struct evAccept) link;
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} evAccept;
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typedef struct evFile {
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evFileFunc func;
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void * uap;
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int fd;
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int eventmask;
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int preemptive;
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struct evFile * prev;
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struct evFile * next;
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struct evFile * fdprev;
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struct evFile * fdnext;
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} evFile;
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typedef struct evStream {
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evStreamFunc func;
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void * uap;
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evFileID file;
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evTimerID timer;
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int flags;
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#define EV_STR_TIMEROK 0x0001 /*%< IFF timer valid. */
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int fd;
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struct iovec * iovOrig;
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int iovOrigCount;
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struct iovec * iovCur;
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int iovCurCount;
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int ioTotal;
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int ioDone;
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int ioErrno;
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struct evStream *prevDone, *nextDone;
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struct evStream *prev, *next;
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} evStream;
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typedef struct evTimer {
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evTimerFunc func;
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void * uap;
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struct timespec due, inter;
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int index;
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int mode;
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#define EV_TMR_RATE 1
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} evTimer;
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typedef struct evWait {
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evWaitFunc func;
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void * uap;
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const void * tag;
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struct evWait * next;
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} evWait;
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typedef struct evWaitList {
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evWait * first;
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evWait * last;
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struct evWaitList * prev;
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struct evWaitList * next;
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} evWaitList;
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typedef struct evEvent_p {
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enum { Accept, File, Stream, Timer, Wait, Free, Null } type;
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union {
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struct { evAccept *this; } accept;
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struct { evFile *this; int eventmask; } file;
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struct { evStream *this; } stream;
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struct { evTimer *this; } timer;
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struct { evWait *this; } wait;
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struct { struct evEvent_p *next; } free;
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struct { const void *placeholder; } null;
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} u;
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} evEvent_p;
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#endif
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#ifdef USE_POLL
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typedef struct {
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void *ctx; /* pointer to the evContext_p */
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uint32_t type; /* READ, WRITE, EXCEPT, nonblk */
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uint32_t result; /* 1 => revents, 0 => events */
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} __evEmulMask;
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#define emulMaskInit(ctx, field, ev, lastnext) \
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ctx->field.ctx = ctx; \
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ctx->field.type = ev; \
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ctx->field.result = lastnext;
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extern short *__fd_eventfield(int fd, __evEmulMask *maskp);
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extern short __poll_event(__evEmulMask *maskp);
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extern void __fd_clr(int fd, __evEmulMask *maskp);
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extern void __fd_set(int fd, __evEmulMask *maskp);
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#undef FD_ZERO
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#define FD_ZERO(maskp)
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#undef FD_SET
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#define FD_SET(fd, maskp) \
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__fd_set(fd, maskp)
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#undef FD_CLR
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#define FD_CLR(fd, maskp) \
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__fd_clr(fd, maskp)
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#undef FD_ISSET
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#define FD_ISSET(fd, maskp) \
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((*__fd_eventfield(fd, maskp) & __poll_event(maskp)) != 0)
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#endif /* USE_POLL */
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#ifndef _LIBC
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typedef struct {
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/* Global. */
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const evEvent_p *cur;
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/* Debugging. */
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int debug;
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FILE *output;
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/* Connections. */
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evConn *conns;
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LIST(evAccept) accepts;
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/* Files. */
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evFile *files, *fdNext;
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#ifndef USE_POLL
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fd_set rdLast, rdNext;
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fd_set wrLast, wrNext;
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fd_set exLast, exNext;
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fd_set nonblockBefore;
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int fdMax, fdCount, highestFD;
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evFile *fdTable[FD_SETSIZE];
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#else
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struct pollfd *pollfds; /* Allocated as needed */
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evFile **fdTable; /* Ditto */
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int maxnfds; /* # elements in above */
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int firstfd; /* First active fd */
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int fdMax; /* Last active fd */
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int fdCount; /* # fd:s with I/O */
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int highestFD; /* max fd allowed by OS */
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__evEmulMask rdLast, rdNext;
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__evEmulMask wrLast, wrNext;
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__evEmulMask exLast, exNext;
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__evEmulMask nonblockBefore;
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#endif /* USE_POLL */
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#ifdef EVENTLIB_TIME_CHECKS
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struct timespec lastSelectTime;
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int lastFdCount;
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#endif
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/* Streams. */
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evStream *streams;
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evStream *strDone, *strLast;
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/* Timers. */
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struct timespec lastEventTime;
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heap_context timers;
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/* Waits. */
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evWaitList *waitLists;
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evWaitList waitDone;
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} evContext_p;
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/* eventlib.c */
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#define evPrintf __evPrintf
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void evPrintf(const evContext_p *ctx, int level, const char *fmt, ...)
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ISC_FORMAT_PRINTF(3, 4);
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#ifdef USE_POLL
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extern int evPollfdRealloc(evContext_p *ctx, int pollfd_chunk_size, int fd);
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#endif /* USE_POLL */
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/* ev_timers.c */
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#define evCreateTimers __evCreateTimers
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heap_context evCreateTimers(const evContext_p *);
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#define evDestroyTimers __evDestroyTimers
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void evDestroyTimers(const evContext_p *);
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/* ev_waits.c */
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#define evFreeWait __evFreeWait
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evWait *evFreeWait(evContext_p *ctx, evWait *old);
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#endif
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/* Global options */
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#ifndef _LIBC
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extern int __evOptMonoTime;
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#endif
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#endif /*_EVENTLIB_P_H*/
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