Reader writer lock

include/sync/rwlock.h

struct rwlock

struct rwlock {
    (uintptr_t)  lock_word;
};

enum rwlock_acquire_type

enum rwlock_acquire_type {
    RWLOCK_ACQUIRE_READ = 0,
    RWLOCK_ACQUIRE_WRITE = 1,
};

rwlock_lock

void rwlock_lock(struct rwlock *lock, enum rwlock_acquire_type type);

rwlock_lock referenced types:

• struct rwlock
• enum rwlock_acquire_type

rwlock_unlock

void rwlock_unlock(struct rwlock *lock);

rwlock_unlock referenced types:

• struct rwlock

rwlock_init

void rwlock_init(struct rwlock *lock, enum thread_prio_class ceiling);

rwlock_init referenced types:

• struct rwlock
• enum thread_prio_class

Defines

RWLOCK_PRIO_CEIL_SHIFT

#define RWLOCK_PRIO_CEIL_SHIFT (1)

RWLOCK_INIT(ceil)

#define RWLOCK_INIT(ceil) {((ceil) << RWLOCK_PRIO_CEIL_SHIFT)}

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