#ifndef SPINLOCK_SPINLOCK_H_
#define SPINLOCK_SPINLOCK_H_

#include <stdatomic.h>
#include "hal/hal.h"

typedef atomic_bool SpinLock;

// Spin more efficiently - cpu dependant
#if defined(__x86_64__)
# define SPINLOCK_HINT() asm volatile("pause")
#else
# define SPINLOCK_HINT()
#endif

#define SPINLOCK_ACQUIRE(sl) \
  do { \
    bool __unlocked = false; \
    while (!atomic_compare_exchange_weak((sl), &__unlocked, true)) { \
      SPINLOCK_HINT(); \
    } \
  } while(0)

#define SPINLOCK_RELEASE(sl) \
  do { \
    atomic_store((sl), false); \
  } while(0)

#define SPINLOCK_INIT() false

#endif // SPINLOCK_SPINLOCK_H_