refcount.h

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#ifndef __VSF_LINUX_REFCOUNT_H__
#define __VSF_LINUX_REFCOUNT_H__
 
#include <linux/types.h>
#include <linux/atomic.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
typedef struct refcount_struct {
    atomic_t refs;
} refcount_t;
 
#define REFCOUNT_INIT(__VALUE)          { .refs = ATOMIC_INIT(__VALUE) }
 
static inline unsigned int refcount_read(refcount_t *r)
{
    return atomic_read(&r->refs);
}
 
static inline void refcount_set(refcount_t *r, int value)
{
    atomic_set(&r->refs, value);
}
 
static inline void refcount_inc(refcount_t *r)
{
    atomic_inc(&r->refs);
}
 
static inline bool refcount_dec_and_test(refcount_t *r)
{
    return atomic_dec_and_test(&r->refs);
}
 
#ifdef __cplusplus
}
#endif
 
#endif