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http://git.haproxy.org/git/haproxy.git/
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58017eef3f
This one used to be stored into debug.h but the debug tools got larger and require a lot of other includes, which can't use BUG_ON() anymore because of this. It does not make sense and instead this macro should be placed into the lower includes and given its omnipresence, the best solution is to create a new bug.h with the few surrounding macros needed to trigger bugs and place assertions anywhere. Another benefit is that it won't be required to add include <debug.h> anymore to use BUG_ON, it will automatically be covered by api.h. No less than 32 occurrences were dropped. The FSM_PRINTF macro was dropped since not used at all anymore (probably since 1.6 or so).
145 lines
4.1 KiB
C
145 lines
4.1 KiB
C
/*
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* include/proto/session.h
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* This file defines everything related to sessions.
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*
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* Copyright (C) 2000-2015 Willy Tarreau - w@1wt.eu
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*
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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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*
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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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*
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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_SESSION_H
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#define _PROTO_SESSION_H
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#include <haproxy/api.h>
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#include <common/buffer.h>
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#include <common/memory.h>
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#include <types/global.h>
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#include <types/session.h>
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#include <proto/obj_type.h>
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#include <proto/stick_table.h>
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#include <proto/server.h>
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extern struct pool_head *pool_head_session;
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extern struct pool_head *pool_head_sess_srv_list;
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struct session *session_new(struct proxy *fe, struct listener *li, enum obj_type *origin);
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void session_free(struct session *sess);
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int session_accept_fd(struct listener *l, int cfd, struct sockaddr_storage *addr);
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int conn_complete_session(struct connection *conn);
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/* Remove the refcount from the session to the tracked counters, and clear the
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* pointer to ensure this is only performed once. The caller is responsible for
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* ensuring that the pointer is valid first.
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*/
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static inline void session_store_counters(struct session *sess)
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{
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void *ptr;
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int i;
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struct stksess *ts;
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for (i = 0; i < MAX_SESS_STKCTR; i++) {
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struct stkctr *stkctr = &sess->stkctr[i];
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ts = stkctr_entry(stkctr);
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if (!ts)
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continue;
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ptr = stktable_data_ptr(stkctr->table, ts, STKTABLE_DT_CONN_CUR);
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if (ptr) {
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HA_RWLOCK_WRLOCK(STK_SESS_LOCK, &ts->lock);
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if (stktable_data_cast(ptr, conn_cur) > 0)
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stktable_data_cast(ptr, conn_cur)--;
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HA_RWLOCK_WRUNLOCK(STK_SESS_LOCK, &ts->lock);
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/* If data was modified, we need to touch to re-schedule sync */
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stktable_touch_local(stkctr->table, ts, 0);
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}
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stkctr_set_entry(stkctr, NULL);
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stksess_kill_if_expired(stkctr->table, ts, 1);
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}
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}
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/* Remove the connection from the session list, and destroy the srv_list if it's now empty */
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static inline void session_unown_conn(struct session *sess, struct connection *conn)
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{
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struct sess_srv_list *srv_list = NULL;
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LIST_DEL(&conn->session_list);
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LIST_INIT(&conn->session_list);
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list_for_each_entry(srv_list, &sess->srv_list, srv_list) {
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if (srv_list->target == conn->target) {
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if (LIST_ISEMPTY(&srv_list->conn_list)) {
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LIST_DEL(&srv_list->srv_list);
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pool_free(pool_head_sess_srv_list, srv_list);
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}
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break;
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}
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}
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}
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static inline int session_add_conn(struct session *sess, struct connection *conn, void *target)
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{
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struct sess_srv_list *srv_list = NULL;
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int found = 0;
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list_for_each_entry(srv_list, &sess->srv_list, srv_list) {
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if (srv_list->target == target) {
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found = 1;
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break;
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}
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}
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if (!found) {
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/* The session has no connection for the server, create a new entry */
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srv_list = pool_alloc(pool_head_sess_srv_list);
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if (!srv_list)
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return 0;
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srv_list->target = target;
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LIST_INIT(&srv_list->conn_list);
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LIST_ADDQ(&sess->srv_list, &srv_list->srv_list);
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}
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LIST_ADDQ(&srv_list->conn_list, &conn->session_list);
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return 1;
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}
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/* Returns 0 if the session can keep the idle conn, -1 if it was destroyed, or 1 if it was added to the server list */
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static inline int session_check_idle_conn(struct session *sess, struct connection *conn)
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{
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if (!(conn->flags & CO_FL_PRIVATE) ||
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sess->idle_conns >= sess->fe->max_out_conns) {
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session_unown_conn(sess, conn);
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conn->owner = NULL;
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conn->flags &= ~CO_FL_SESS_IDLE;
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conn->mux->destroy(conn->ctx);
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return -1;
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} else {
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conn->flags |= CO_FL_SESS_IDLE;
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sess->idle_conns++;
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}
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return 0;
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}
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#endif /* _PROTO_SESSION_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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