X-Git-Url: http://git.indexdata.com/?p=yaz-moved-to-github.git;a=blobdiff_plain;f=server%2Feventl.c;h=f626799c2e0269ae256af796475d896f3a8a81f8;hp=3d2df2fb343920029b55f28f2895892fe2b2e29d;hb=f69d4aa4609ff3daa71733da1ea0fcd8322ab954;hpb=0a3a8b6400167c2dfd6e6b5f135f6ad4783e554c diff --git a/server/eventl.c b/server/eventl.c index 3d2df2f..f626799 100644 --- a/server/eventl.c +++ b/server/eventl.c @@ -1,10 +1,85 @@ /* - * Copyright (C) 1994, Index Data I/S - * All rights reserved. + * Copyright (c) 1995-1998, Index Data + * See the file LICENSE for details. * Sebastian Hammer, Adam Dickmeiss * * $Log: eventl.c,v $ - * Revision 1.2 1995-03-14 10:27:59 quinn + * Revision 1.26 1998-02-11 11:53:35 adam + * Changed code so that it compiles as C++. + * + * Revision 1.25 1998/01/29 13:30:23 adam + * Better event handle system for NT/Unix. + * + * Revision 1.24 1997/09/04 14:19:13 adam + * Added credits. + * + * Revision 1.23 1997/09/01 08:52:59 adam + * New windows NT/95 port using MSV5.0. The test server 'ztest' was + * moved a separate directory. MSV5.0 project server.dsp created. + * As an option, the server can now operate as an NT service. + * + * Revision 1.22 1996/07/06 19:58:35 quinn + * System headerfiles gathered in yconfig + * + * Revision 1.21 1996/02/21 12:55:51 quinn + * small + * + * Revision 1.20 1996/02/21 12:52:55 quinn + * Test + * + * Revision 1.19 1995/12/05 11:17:30 quinn + * Moved some paranthesises around. Sigh. + * + * Revision 1.18 1995/11/13 09:27:41 quinn + * Fiddling with the variant stuff. + * + * Revision 1.17 1995/11/07 12:37:44 quinn + * Added support for forcing TIMEOUT event. + * + * Revision 1.16 1995/11/01 13:54:56 quinn + * Minor adjustments + * + * Revision 1.15 1995/09/15 14:44:15 quinn + * *** empty log message *** + * + * Revision 1.14 1995/08/29 14:44:50 quinn + * Reset timeouts. + * + * Revision 1.13 1995/08/29 11:17:56 quinn + * Added code to receive close + * + * Revision 1.12 1995/08/29 10:41:18 quinn + * Small. + * + * Revision 1.11 1995/06/19 12:39:09 quinn + * Fixed bug in timeout code. Added BER dumper. + * + * Revision 1.10 1995/06/16 10:31:33 quinn + * Added session timeout. + * + * Revision 1.9 1995/06/05 10:53:31 quinn + * Added a better SCAN. + * + * Revision 1.8 1995/05/16 08:51:01 quinn + * License, documentation, and memory fixes + * + * Revision 1.7 1995/03/27 15:02:01 quinn + * Added some includes for better portability + * + * Revision 1.6 1995/03/27 08:34:21 quinn + * Added dynamic server functionality. + * Released bindings to session.c (is now redundant) + * + * Revision 1.5 1995/03/15 08:37:41 quinn + * Now we're pretty much set for nonblocking I/O. + * + * Revision 1.4 1995/03/14 16:59:48 quinn + * Bug-fixes + * + * Revision 1.3 1995/03/14 11:30:14 quinn + * Works better now. + * + * Revision 1.2 1995/03/14 10:27:59 quinn * More work on demo server. * * Revision 1.1 1995/03/10 18:22:44 quinn @@ -12,100 +87,147 @@ * */ +#include +#include #include -#include -#include +#ifdef WINDOWS +#include +#else #include +#endif #include +#include +#include -#include - -IOCHAN iochans = 0; +#include +#include +#include +#include "eventl.h" +#include "session.h" +#include IOCHAN iochan_create(int fd, IOC_CALLBACK cb, int flags) { - IOCHAN new; + IOCHAN new_iochan; - if (!(new = malloc(sizeof(*new)))) + if (!(new_iochan = (IOCHAN)xmalloc(sizeof(*new_iochan)))) return 0; - new->destroyed = 0; - new->fd = fd; - new->flags = flags; - new->fun = cb; - new->next = iochans; - iochans = new; - return new; + new_iochan->destroyed = 0; + new_iochan->fd = fd; + new_iochan->flags = flags; + new_iochan->fun = cb; + new_iochan->force_event = 0; + new_iochan->last_event = new_iochan->max_idle = 0; + new_iochan->next = NULL; + return new_iochan; } -int event_loop() +int event_loop(IOCHAN *iochans) { - do + do /* loop as long as there are active associations to process */ { IOCHAN p, nextp; fd_set in, out, except; int res, max; - static struct timeval nullto = {0, 0}; + static struct timeval nullto = {0, 0}, to; struct timeval *timeout; FD_ZERO(&in); FD_ZERO(&out); FD_ZERO(&except); - timeout = 0; /* hang on select */ - for (p = iochans; p; p = p->next) + timeout = &to; /* hang on select */ + to.tv_sec = 5*60; + to.tv_usec = 0; + max = 0; + for (p = *iochans; p; p = p->next) { if (p->force_event) - timeout = &nullto; + timeout = &nullto; /* polling select */ if (p->flags & EVENT_INPUT) - FD_SET(p->fd, &in); + FD_SET(p->fd, &in); if (p->flags & EVENT_OUTPUT) - FD_SET(p->fd, &out); + FD_SET(p->fd, &out); if (p->flags & EVENT_EXCEPT) - FD_SET(p->fd, &except); + FD_SET(p->fd, &except); if (p->fd > max) - max = p->fd; + max = p->fd; } if ((res = select(max + 1, &in, &out, &except, timeout)) < 0) { if (errno == EINTR) - continue; - return 1; + continue; + else + { + /* Destroy the first member in the chain, and try again */ + association *assoc = (association *)iochan_getdata(*iochans); + COMSTACK conn = assoc->client_link; + + cs_close(conn); + destroy_association(assoc); + iochan_destroy(*iochans); + logf(LOG_DEBUG, "error while selecting, destroying iochan %p", + *iochans); + } } - if (!res) - continue; - for (p = iochans; p; p = nextp) + for (p = *iochans; p; p = p->next) { int force_event = p->force_event; + time_t now = time(0); p->force_event = 0; - nextp = p->next; - if (FD_ISSET(p->fd, &in) || force_event == EVENT_INPUT) - (*p->fun)(p, EVENT_INPUT); if (!p->destroyed && (FD_ISSET(p->fd, &in) || - force_event == EVENT_OUTPUT)) + force_event == EVENT_INPUT)) + { + p->last_event = now; + (*p->fun)(p, EVENT_INPUT); + } + if (!p->destroyed && (FD_ISSET(p->fd, &out) || + force_event == EVENT_OUTPUT)) + { + p->last_event = now; (*p->fun)(p, EVENT_OUTPUT); + } if (!p->destroyed && (FD_ISSET(p->fd, &except) || - force_event == EVENT_EXCEPT)) + force_event == EVENT_EXCEPT)) + { + p->last_event = now; (*p->fun)(p, EVENT_EXCEPT); + } + if (!p->destroyed && ((p->max_idle && now - p->last_event > + p->max_idle) || force_event == EVENT_TIMEOUT)) + { + p->last_event = now; + (*p->fun)(p, EVENT_TIMEOUT); + } + } + for (p = *iochans; p; p = nextp) + { + nextp = p->next; + if (p->destroyed) { - IOCHAN tmp = p, pr; + IOCHAN tmp = p, pr; + + /* We need to inform the threadlist that this channel has been destroyed */ + statserv_remove(p); - if (p == iochans) - iochans = p->next; + /* Now reset the pointers */ + if (p == *iochans) + *iochans = p->next; else { - for (pr = iochans; pr; pr = pr->next) - if (pr->next == p) - break; - assert(pr); + for (pr = *iochans; pr; pr = pr->next) + if (pr->next == p) + break; + assert(pr); /* grave error if it weren't there */ pr->next = p->next; } if (nextp == p) nextp = p->next; - free(tmp); + xfree(tmp); } } } - while (iochans); + while (*iochans); return 0; }