X-Git-Url: http://git.indexdata.com/?p=yaz-moved-to-github.git;a=blobdiff_plain;f=src%2Feventl.c;h=2392cc8317bdf60fd61836a6b6813cebefed1f30;hp=ac562642adac53b235b1143d30acc6eee03507f4;hb=cf3ff0df41755297543b14f007842e1dc216ec25;hpb=c6e47cbbff56f39f6d81b079ebaeac41d793d4d9 diff --git a/src/eventl.c b/src/eventl.c index ac56264..2392cc8 100644 --- a/src/eventl.c +++ b/src/eventl.c @@ -1,21 +1,39 @@ /* - * Copyright (c) 1995-2003, Index Data + * Copyright (C) 1995-2005, Index Data ApS * See the file LICENSE for details. - * Sebastian Hammer, Adam Dickmeiss * - * $Id: eventl.c,v 1.1 2003-10-27 12:21:30 adam Exp $ + * $Id: eventl.c,v 1.9 2005-06-25 15:46:04 adam Exp $ + */ + +/** + * \file eventl.c + * \brief Implements event loop handling for GFS. + * + * This source implements the main event loop for the Generic Frontend + * Server. It uses select(2). */ -#include #include +#include +#include +#include +#include + +#if HAVE_SYS_TYPES_H +#include +#endif +#if HAVE_SYS_TIME_H +#include +#endif #ifdef WIN32 #include -#else +#endif +#if HAVE_UNISTD_H #include #endif -#include -#include -#include +#if HAVE_SYS_SELECT_H +#include +#endif #include #include @@ -34,12 +52,21 @@ #define YAZ_EV_SELECT select #endif -IOCHAN iochan_create(int fd, IOC_CALLBACK cb, int flags) +static int log_level=0; +static int log_level_initialized=0; + +IOCHAN iochan_create(int fd, IOC_CALLBACK cb, int flags, int chan_id) { IOCHAN new_iochan; + if (!log_level_initialized) + { + log_level=yaz_log_module_level("eventl"); + log_level_initialized=1; + } + if (!(new_iochan = (IOCHAN)xmalloc(sizeof(*new_iochan)))) - return 0; + return 0; new_iochan->destroyed = 0; new_iochan->fd = fd; new_iochan->flags = flags; @@ -47,6 +74,7 @@ IOCHAN iochan_create(int fd, IOC_CALLBACK cb, int flags) new_iochan->force_event = 0; new_iochan->last_event = new_iochan->max_idle = 0; new_iochan->next = NULL; + new_iochan->chan_id = chan_id; return new_iochan; } @@ -54,10 +82,10 @@ int event_loop(IOCHAN *iochans) { 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 to; + IOCHAN p, nextp; + fd_set in, out, except; + int res, max; + static struct timeval to; time_t now = time(0); if (statserv_must_terminate()) @@ -65,27 +93,27 @@ int event_loop(IOCHAN *iochans) for (p = *iochans; p; p = p->next) p->force_event = EVENT_TIMEOUT; } - FD_ZERO(&in); - FD_ZERO(&out); - FD_ZERO(&except); - to.tv_sec = 3600; - to.tv_usec = 0; - max = 0; - for (p = *iochans; p; p = p->next) - { + FD_ZERO(&in); + FD_ZERO(&out); + FD_ZERO(&except); + to.tv_sec = 3600; + to.tv_usec = 0; + max = 0; + for (p = *iochans; p; p = p->next) + { time_t w, ftime; - yaz_log(LOG_DEBUG, "fd=%d flags=%d force_event=%d", + yaz_log(log_level, "fd=%d flags=%d force_event=%d", p->fd, p->flags, p->force_event); - if (p->force_event) + if (p->force_event) to.tv_sec = 0; /* polling select */ - if (p->flags & EVENT_INPUT) - FD_SET(p->fd, &in); - if (p->flags & EVENT_OUTPUT) - FD_SET(p->fd, &out); - if (p->flags & EVENT_EXCEPT) - FD_SET(p->fd, &except); - if (p->fd > max) - max = p->fd; + if (p->flags & EVENT_INPUT) + FD_SET(p->fd, &in); + if (p->flags & EVENT_OUTPUT) + FD_SET(p->fd, &out); + if (p->flags & EVENT_EXCEPT) + FD_SET(p->fd, &except); + if (p->fd > max) + max = p->fd; if (p->max_idle && p->last_event) { ftime = p->last_event + p->max_idle; @@ -96,13 +124,13 @@ int event_loop(IOCHAN *iochans) if (w < to.tv_sec) to.tv_sec = w; } - } - yaz_log(LOG_DEBUG, "select start %ld", (long) to.tv_sec); - res = YAZ_EV_SELECT(max + 1, &in, &out, &except, &to); - yaz_log(LOG_DEBUG, "select end"); - if (res < 0) - { - if (yaz_errno() == EINTR) + } + yaz_log(log_level, "select start %ld", (long) to.tv_sec); + res = YAZ_EV_SELECT(max + 1, &in, &out, &except, &to); + yaz_log(log_level, "select end"); + if (res < 0) + { + if (yaz_errno() == EINTR) { if (statserv_must_terminate()) { @@ -118,71 +146,79 @@ int event_loop(IOCHAN *iochans) COMSTACK conn = assoc->client_link; cs_close(conn); - destroy_association(assoc); - iochan_destroy(*iochans); - yaz_log(LOG_DEBUG, "error select, destroying iochan %p", - *iochans); + destroy_association(assoc); + iochan_destroy(*iochans); + yaz_log(log_level, "error select, destroying iochan %p", + *iochans); } - } + } now = time(0); - for (p = *iochans; p; p = p->next) - { - int force_event = p->force_event; - - p->force_event = 0; - if (!p->destroyed && (FD_ISSET(p->fd, &in) || - 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)) - { - 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; + for (p = *iochans; p; p = p->next) + { + int force_event = p->force_event; + + p->force_event = 0; + if (!p->destroyed && (FD_ISSET(p->fd, &in) || + 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)) + { + 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; /* We need to inform the threadlist that this channel has been destroyed */ statserv_remove(p); - /* Now reset the pointers */ + /* 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); /* grave error if it weren't there */ - pr->next = p->next; - } - if (nextp == p) - nextp = p->next; - xfree(tmp); - } - } + *iochans = p->next; + else + { + 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; + xfree(tmp); + } + } } while (*iochans); return 0; } +/* + * Local variables: + * c-basic-offset: 4 + * indent-tabs-mode: nil + * End: + * vim: shiftwidth=4 tabstop=8 expandtab + */ +