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2ff7622c0c
Some pollers such as kqueue lose their FD across fork(), meaning that the registered file descriptors are lost too. Now when the proxies are started by start_proxies(), the file descriptors are not registered yet, leaving enough time for the fork() to take place and to get a new pollfd. It will be the first call to maintain_proxies that will register them.
95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
/*
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include/proto/fd.h
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File descriptors states.
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Copyright (C) 2000-2007 Willy Tarreau - w@1wt.eu
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation, version 2.1
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exclusively.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _PROTO_FD_H
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#define _PROTO_FD_H
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#include <stdio.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <common/config.h>
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#include <types/fd.h>
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/* Deletes an FD from the fdsets, and recomputes the maxfd limit.
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* The file descriptor is also closed.
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*/
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void fd_delete(int fd);
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/* registers all known pollers */
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void register_pollers();
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/* disable the specified poller */
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void disable_poller(const char *poller_name);
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/*
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* Initialize the pollers till the best one is found.
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* If none works, returns 0, otherwise 1.
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*/
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int init_pollers();
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/*
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* Some pollers may lose their connection after a fork(). It may be necessary
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* to create initialize part of them again. Returns 0 in case of failure,
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* otherwise 1. The fork() function may be NULL if unused. In case of error,
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* the the current poller is destroyed and the caller is responsible for trying
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* another one by calling init_pollers() again.
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*/
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int fork_poller();
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/*
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* Lists the known pollers on <out>.
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* Should be performed only before initialization.
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*/
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int list_pollers(FILE *out);
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/*
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* Runs the polling loop
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*/
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void run_poller();
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#define EV_FD_SET(fd, ev) (cur_poller.set((fd), (ev)))
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#define EV_FD_CLR(fd, ev) (cur_poller.clr((fd), (ev)))
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#define EV_FD_ISSET(fd, ev) (cur_poller.is_set((fd), (ev)))
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#define EV_FD_COND_S(fd, ev) (cur_poller.cond_s((fd), (ev)))
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#define EV_FD_COND_C(fd, ev) (cur_poller.cond_c((fd), (ev)))
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#define EV_FD_REM(fd) (cur_poller.rem(fd))
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#define EV_FD_CLO(fd) (cur_poller.clo(fd))
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/* recomputes the maxfd limit from the fd */
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static inline void fd_insert(int fd)
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{
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if (fd + 1 > maxfd)
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maxfd = fd + 1;
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}
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#endif /* _PROTO_FD_H */
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*/
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