haproxy/include/haproxy/queue-t.h

/*
 * include/haproxy/queue-t.h
 * This file defines variables and structures needed for queues.
 *
 * 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_QUEUE_T_H
#define _HAPROXY_QUEUE_T_H

#include <import/ebtree-t.h>
#include <haproxy/api-t.h>
#include <haproxy/thread-t.h>

struct proxy;
struct server;
struct stream;
struct queue;

struct pendconn {
	int            strm_flags; /* stream flags */
	unsigned int   queue_idx;  /* value of proxy/server queue_idx at time of enqueue */
	struct stream *strm;
	struct queue  *queue;      /* the queue the entry is queued into */
	struct server *target;     /* the server that was assigned, = srv except if srv==NULL */
	struct eb32_node node;
	__decl_thread(HA_SPINLOCK_T del_lock);  /* use before removal, always under queue's lock */
};

struct queue {
	struct eb_root head;                    /* queued pendconnds */
	struct proxy  *px;                      /* the proxy we're waiting for, never NULL in queue */
	struct server *sv;                      /* the server we are waiting for, may be NULL if don't care */
	__decl_thread(HA_SPINLOCK_T lock);      /* for manipulations in the tree */
	unsigned int idx;			/* current queuing index */
	unsigned int length;                    /* number of entries */
};

#endif /* _HAPROXY_QUEUE_T_H */

/*
 * Local variables:
 *  c-indent-level: 8
 *  c-basic-offset: 8
 * End:
 */