forked from xuos/xiuos
60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/*
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* Copyright (c) 2020 AIIT XUOS Lab
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* XiUOS is licensed under Mulan PSL v2.
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* You can use this software according to the terms and conditions of the Mulan PSL v2.
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* You may obtain a copy of Mulan PSL v2 at:
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* http://license.coscl.org.cn/MulanPSL2
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PSL v2 for more details.
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*/
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#include "config/config.h"
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#ifndef __AMP_SPINLOCK_H__
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#define __AMP_SPINLOCK_H__
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/* 基于 stdatomic ，只能运行在有 stdatomic.h 的环境 */
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#if PLATFORM_CHOICE == PLATFORM_LINUX_USER || PLATFORM_CHOICE == PLATFORM_RTOS_XIUOS
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#include <stdatomic.h>
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#define BYTE_LOCKED_STATE (0xFU)
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#define BYTE_UNLOCK_STATE (0xAU)
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typedef atomic_uchar ByteFlag;
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/* 不支持递归加锁 */
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struct ByteFlagOps /* CAS原子锁操作集合 */
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{
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/* 初始化原子锁 */
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void (*init)(ByteFlag* flag);
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/* 查看原子锁是否被锁定 */
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int32_t (*is_locked)(ByteFlag* flag);
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/* 原子锁锁定 */
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void (*lock)(ByteFlag* flag);
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/* 原子锁释放 */
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int32_t (*unlock)(ByteFlag* flag);
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/* 原子锁试图加锁 */
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int32_t (*try_lock)(ByteFlag* flag);
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};
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extern struct ByteFlagOps byte_flag_ops;
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/* 适合存放在代码区的互斥量 */
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typedef atomic_flag MarkFlag;
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struct MarkFlagOps
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{
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/* 原子锁锁定 */
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void (*lock)(MarkFlag* flag);
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/* 原子锁释放 */
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void (*unlock)(MarkFlag* flag);
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/* 原子锁试图加锁 */
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int32_t (*try_lock)(MarkFlag* flag);
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};
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extern struct MarkFlagOps mark_flag_ops;
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#endif /* PLATFORM_CHOICE == PLATFORM_LINUX_USER || PLATFORM_CHOICE == PLATFORM_RTOS_XIUOS */
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#endif /* __AMP_SPINLOCK_H__ */ |