spinlock_t

本文主要是介绍spinlock_t，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

头文件:

#include <linux/spinlock.h>

定义:

typedef struct spinlock {union {struct raw_spinlock rlock;#ifdef CONFIG_DEBUG_LOCK_ALLOC
# define LOCK_PADSIZE (offsetof(struct raw_spinlock, dep_map))struct {u8 __padding[LOCK_PADSIZE];struct lockdep_map dep_map;};
#endif};
} spinlock_t;

初始化:

void spin_lock_init(spinlock_t *lock)

static inline void spin_lock(spinlock_t *lock)
{raw_spin_lock(&lock->rlock);
}

解锁:

static inline void spin_unlock(spinlock_t *lock)
{raw_spin_unlock(&lock->rlock);
}

尝试上锁:

static inline int spin_trylock(spinlock_t *lock)
{return raw_spin_trylock(&lock->rlock);
}

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