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Reader writer lock

include/sync/rwlock.h

Section titled “include/sync/rwlock.h”

struct rwlock

Section titled “struct rwlock”
struct rwlock {
    (uintptr_t)  lock_word;
};

enum rwlock_acquire_type

Section titled “enum rwlock_acquire_type”
enum rwlock_acquire_type {
    RWLOCK_ACQUIRE_READ = 0,
    RWLOCK_ACQUIRE_WRITE = 1,
};

Defines

Section titled “Defines”

RWLOCK_PRIO_CEIL_SHIFT

Section titled “RWLOCK_PRIO_CEIL_SHIFT”
#define RWLOCK_PRIO_CEIL_SHIFT (1)

RWLOCK_INIT(ceil)

Section titled “RWLOCK_INIT(ceil)”
#define RWLOCK_INIT(ceil) {((ceil) << RWLOCK_PRIO_CEIL_SHIFT)}