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/*
* Copyright (c) 2018 Richard Braun.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef KERN_RCU_I_H
#define KERN_RCU_I_H
#include <assert.h>
#include <stdbool.h>
#include <kern/macros.h>
#include <kern/rcu_types.h>
#include <kern/thread.h>
void rcu_reader_leave(struct rcu_reader *reader);
static inline bool
rcu_reader_in_cs(const struct rcu_reader *reader)
{
return reader->level != 0;
}
static inline bool
rcu_reader_linked(const struct rcu_reader *reader)
{
assert(reader == thread_rcu_reader(thread_self()));
return reader->linked;
}
static inline void
rcu_reader_inc(struct rcu_reader *reader)
{
reader->level++;
assert(reader->level != 0);
}
static inline void
rcu_reader_dec(struct rcu_reader *reader)
{
assert(reader->level != 0);
reader->level--;
if (unlikely(!rcu_reader_in_cs(reader) && rcu_reader_linked(reader))) {
rcu_reader_leave(reader);
}
}
#endif /* KERN_RCU_I_H */
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