atomic.h

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#pragma once

#include <stdbool.h>
#include <stdint.h>

typedef struct {
    volatile int count; 
} atomic_t;

typedef struct {
    volatile unsigned int lock; 
} spinlock_t;


inline bool iCAS(volatile uint32_t * ptr, uint32_t oldVal, uint32_t newVal);
inline int atomic_test_and_set(int *);
inline void atomic_inc(atomic_t *);
inline void atomic_dec(atomic_t *);
inline int atomic_inc_and_test(atomic_t * v);
inline bool spin_trylock(spinlock_t * s);
inline void spin_unlock(spinlock_t * s);
inline void spin_lock(spinlock_t * s);

#define atomic_read(v)      ((v)->count)

#define atomic_set(v,i)     (((v)->count) = (i))

#define spinlock_init(s)    ((s)->lock = 0)