mutex

include/sync/mutex.h

struct mutex_simple

Member Type	Member Name
struct thread	*owner
struct thread_queue	waiters
struct spinlock	lock

struct mutex

Member Type	Member Name
(uintptr_t)	lock_word

enum mutex_bits

Name	Value
MUTEX_HELD_BIT	1
MUTEX_WAITER_BIT	1 << 1

• void mutex_simple_init(struct mutex_simple *m)
• void mutex_simple_lock(struct mutex_simple *m)
• void mutex_simple_unlock(struct mutex_simple *m)
• static inline void mutex_init(struct mutex *mtx)
• void mutex_unlock(struct mutex *mutex)
• void mutex_lock(struct mutex *mutex)

Defines

• MUTEX_META_BITS: (MUTEX_HELD_BIT | MUTEX_WAITER_BIT)
• MUTEX_INIT: {ATOMIC_VAR_INIT(0)}

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