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https://git.haproxy.org/git/haproxy.git/
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4edff4a2cc
The variables trees use the immediate cebtree API, better use the item one which is more expressive and safer. The "node" field was renamed to "name_node" to avoid any ambiguity.
99 lines
3.2 KiB
C
99 lines
3.2 KiB
C
/*
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* include/haproxy/vars.h
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* Prototypes for variables.
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*
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* Copyright (C) 2015 Thierry FOURNIER <tfournier@arpalert.org>
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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 _HAPROXY_VARS_H
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#define _HAPROXY_VARS_H
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#include <import/ceb64_tree.h>
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#include <haproxy/api-t.h>
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#include <haproxy/session-t.h>
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#include <haproxy/stream-t.h>
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#include <haproxy/thread.h>
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#include <haproxy/vars-t.h>
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extern struct vars proc_vars;
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struct sample;
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struct arg;
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void vars_init_head(struct vars *vars, enum vars_scope scope);
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void var_accounting_diff(struct vars *vars, struct session *sess, struct stream *strm, int size);
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unsigned int var_clear(struct vars *vars, struct var *var, int force);
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void vars_prune_per_sess(struct vars *vars);
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int var_set(const struct var_desc *desc, struct sample *smp, uint flags);
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int var_unset(const struct var_desc *desc, struct sample *smp);
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int vars_get_by_name(const char *name, size_t len, struct sample *smp, const struct buffer *def);
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int vars_set_by_name_ifexist(const char *name, size_t len, struct sample *smp);
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int vars_set_by_name(const char *name, size_t len, struct sample *smp);
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int vars_unset_by_name_ifexist(const char *name, size_t len, struct sample *smp);
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int vars_get_by_desc(const struct var_desc *var_desc, struct sample *smp, const struct buffer *def);
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int vars_check_arg(struct arg *arg, char **err);
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/* locks the <vars> for writes if it's in a shared scope */
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static inline void vars_wrlock(struct vars *vars)
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{
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if (vars->scope == SCOPE_PROC)
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HA_RWLOCK_WRLOCK(VARS_LOCK, &vars->rwlock);
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}
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/* unlocks the <vars> for writes if it's in a shared scope */
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static inline void vars_wrunlock(struct vars *vars)
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{
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if (vars->scope == SCOPE_PROC)
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HA_RWLOCK_WRUNLOCK(VARS_LOCK, &vars->rwlock);
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}
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/* locks the <vars> for reads if it's in a shared scope */
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static inline void vars_rdlock(struct vars *vars)
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{
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if (vars->scope == SCOPE_PROC)
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HA_RWLOCK_RDLOCK(VARS_LOCK, &vars->rwlock);
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}
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/* unlocks the <vars> for reads if it's in a shared scope */
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static inline void vars_rdunlock(struct vars *vars)
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{
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if (vars->scope == SCOPE_PROC)
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HA_RWLOCK_RDUNLOCK(VARS_LOCK, &vars->rwlock);
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}
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/* This function free all the memory used by all the variables
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* in the list.
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*/
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static inline void vars_prune(struct vars *vars, struct session *sess, struct stream *strm)
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{
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struct var *var;
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unsigned int size = 0;
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int i;
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for (i = 0; i < VAR_NAME_ROOTS; i++) {
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while ((var = cebu64_item_first(&vars->name_root[i], name_node, name_hash, struct var)))
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size += var_clear(vars, var, 1);
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}
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if (!size)
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return;
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var_accounting_diff(vars, sess, strm, -size);
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}
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#endif
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