diff options
Diffstat (limited to 'kern/spinlock.h')
| -rw-r--r-- | kern/spinlock.h | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/kern/spinlock.h b/kern/spinlock.h index d88d535e..f9e74f56 100644 --- a/kern/spinlock.h +++ b/kern/spinlock.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2012-2017 Richard Braun. + * Copyright (c) 2012-2018 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 @@ -26,6 +26,11 @@ #ifndef KERN_SPINLOCK_H #define KERN_SPINLOCK_H +#include <assert.h> +#include <stdbool.h> +#include <stdint.h> + +#include <kern/atomic.h> #include <kern/init.h> #include <kern/macros.h> #include <kern/spinlock_i.h> @@ -34,7 +39,17 @@ struct spinlock; -#define spinlock_assert_locked(lock) assert((lock)->value != SPINLOCK_UNLOCKED) +/* TODO Remove, let users do it instead */ +#define spinlock_assert_locked(lock) assert(spinlock_locked(lock)) + +static inline bool +spinlock_locked(const struct spinlock *lock) +{ + uint32_t value; + + value = atomic_load(&lock->value, ATOMIC_RELAXED); + return value != SPINLOCK_UNLOCKED; +} #ifdef SPINLOCK_TRACK_OWNER |