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/*
* include/haproxy/pipe.h
* Pipe management - exported functions
*
* Copyright (C) 2000-2020 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 _HAPROXY_PIPE_H
#define _HAPROXY_PIPE_H
#include <haproxy/api.h>
#include <haproxy/pipe-t.h>
extern int pipes_used; /* # of pipes in use (2 fds each) */
extern int pipes_free; /* # of pipes unused (2 fds each) */
/* return a pre-allocated empty pipe. Try to allocate one if there isn't any
* left. NULL is returned if a pipe could not be allocated.
*/
struct pipe *get_pipe();
/* destroy a pipe, possibly because an error was encountered on it. Its FDs
* will be closed and it will not be reinjected into the live pool.
*/
void kill_pipe(struct pipe *p);
/* put back a unused pipe into the live pool. If it still has data in it, it is
* closed and not reinjected into the live pool. The caller is not allowed to
* use it once released.
*/
void put_pipe(struct pipe *p);
#endif /* _HAPROXY_PIPE_H */
/*
* Local variables:
* c-indent-level: 8
* c-basic-offset: 8
* End:
*/
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