2025-02-27 17:59:18 +08:00

62 lines
1.7 KiB
C
Executable File

// Copyright 2020-2022 Beken
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef _spinlock_h_
#define _spinlock_h_
#ifdef __cplusplus
extern "C" {
#endif
#include <common/bk_typedef.h>
typedef struct {
uint32_t owner;
uint16_t count;
uint16_t core_id;
} spinlock_t;
#define SPIN_LOCK_FREE (0xF2EEF2EE)
#define SPIN_LOCK_INIT {.owner = SPIN_LOCK_FREE, .count = 0}
void spinlock_init(spinlock_t *slock);
uint32_t spinlock_acquire(volatile spinlock_t *slock);
void spinlock_release(volatile spinlock_t *slock, uint32_t flag);
/* similiar with linux spin lock API */
/* NOTE: !!! lock must located in shared memory */
void spin_lock_init(spinlock_t *lock);
void spin_lock(volatile spinlock_t *lock);
void spin_unlock(volatile spinlock_t *lock);
/* spin_trylock: 0: spin lock failed, 1: spin lock success */
int spin_trylock(volatile spinlock_t *lock);
#define spin_lock_irqsave(lock, flags) \
do { \
flags = _spin_lock_irqsave(lock); \
} while (0)
#define spin_unlock_irqrestore(lock, flags) \
do { \
_spin_unlock_irqrestore(lock, flags); \
} while (0)
#ifdef __cplusplus
}
#endif
#endif /* _spinlock_h_ */