mirror of
https://github.com/haproxy/haproxy.git
synced 2026-02-11 06:43:42 -05:00
dd2f85eb3b
It appears that fd.h includes a number of unneeded files and was included from standard.h, and as such served as an intermediary to provide almost everything to everyone. By removing its useless includes, a long dependency chain broke but could easily be fixed.
112 lines
4.6 KiB
C
112 lines
4.6 KiB
C
/*
|
|
* include/types/fd.h
|
|
* File descriptors states.
|
|
*
|
|
* Copyright (C) 2000-2009 Willy Tarreau - w@1wt.eu
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation, version 2.1
|
|
* exclusively.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef _TYPES_FD_H
|
|
#define _TYPES_FD_H
|
|
|
|
#include <common/config.h>
|
|
#include <types/port_range.h>
|
|
|
|
enum {
|
|
DIR_RD=0,
|
|
DIR_WR=1,
|
|
DIR_SIZE
|
|
};
|
|
|
|
/*
|
|
* FD_POLL_IN remains set as long as some data is pending for read.
|
|
* FD_POLL_OUT remains set as long as the fd accepts to write data.
|
|
* FD_POLL_ERR and FD_POLL_ERR remain set forever (until processed).
|
|
*/
|
|
#define FD_POLL_IN 0x01
|
|
#define FD_POLL_PRI 0x02
|
|
#define FD_POLL_OUT 0x04
|
|
#define FD_POLL_ERR 0x08
|
|
#define FD_POLL_HUP 0x10
|
|
|
|
#define FD_POLL_DATA (FD_POLL_IN | FD_POLL_OUT)
|
|
#define FD_POLL_STICKY (FD_POLL_ERR | FD_POLL_HUP)
|
|
|
|
/* info about one given fd */
|
|
struct fdtab {
|
|
int (*iocb)(int fd); /* I/O handler, returns FD_WAIT_* */
|
|
void *owner; /* the connection or listener associated with this fd, NULL if closed */
|
|
unsigned int spec_p; /* speculative polling: position in spec list+1. 0=not in list. */
|
|
unsigned char spec_e; /* speculative polling: read and write events status. 4 bits */
|
|
unsigned char ev; /* event seen in return of poll() : FD_POLL_* */
|
|
};
|
|
|
|
/* less often used information */
|
|
struct fdinfo {
|
|
struct port_range *port_range; /* optional port range to bind to */
|
|
int local_port; /* optional local port */
|
|
};
|
|
|
|
/*
|
|
* Poller descriptors.
|
|
* - <name> is initialized by the poller's register() function, and should not
|
|
* be allocated, just linked to.
|
|
* - <pref> is initialized by the poller's register() function. It is set to 0
|
|
* by default, meaning the poller is disabled. init() should set it to 0 in
|
|
* case of failure. term() must set it to 0. A generic unoptimized select()
|
|
* poller should set it to 100.
|
|
* - <private> is initialized by the poller's init() function, and cleaned by
|
|
* the term() function.
|
|
* - clo() should be used to do indicate the poller that fd will be closed. It
|
|
* may be the same as rem() on some pollers.
|
|
* - poll() calls the poller, expiring at <exp>
|
|
*/
|
|
struct poller {
|
|
void *private; /* any private data for the poller */
|
|
int REGPRM2 (*is_set)(const int fd, int dir); /* check if <fd> is being polled for dir <dir> */
|
|
void REGPRM2 (*set)(const int fd, int dir); /* set polling on <fd> for <dir> */
|
|
void REGPRM2 (*clr)(const int fd, int dir); /* clear polling on <fd> for <dir> */
|
|
void REGPRM2 (*wai)(const int fd, int dir); /* wait for polling on <fd> for <dir> */
|
|
void REGPRM1 (*rem)(const int fd); /* remove any polling on <fd> */
|
|
void REGPRM1 (*clo)(const int fd); /* mark <fd> as closed */
|
|
void REGPRM2 (*poll)(struct poller *p, int exp); /* the poller itself */
|
|
int REGPRM1 (*init)(struct poller *p); /* poller initialization */
|
|
void REGPRM1 (*term)(struct poller *p); /* termination of this poller */
|
|
int REGPRM1 (*test)(struct poller *p); /* pre-init check of the poller */
|
|
int REGPRM1 (*fork)(struct poller *p); /* post-fork re-opening */
|
|
const char *name; /* poller name */
|
|
int pref; /* try pollers with higher preference first */
|
|
};
|
|
|
|
extern struct poller cur_poller; /* the current poller */
|
|
extern int nbpollers;
|
|
#define MAX_POLLERS 10
|
|
extern struct poller pollers[MAX_POLLERS]; /* all registered pollers */
|
|
|
|
extern struct fdtab *fdtab; /* array of all the file descriptors */
|
|
extern struct fdinfo *fdinfo; /* less-often used infos for file descriptors */
|
|
extern int maxfd; /* # of the highest fd + 1 */
|
|
extern int totalconn; /* total # of terminated sessions */
|
|
extern int actconn; /* # of active sessions */
|
|
|
|
#endif /* _TYPES_FD_H */
|
|
|
|
/*
|
|
* Local variables:
|
|
* c-indent-level: 8
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|