urg_ring_buffer.h

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#ifndef URG_RING_BUFFER_H
#define URG_RING_BUFFER_H


typedef struct
{
    char *buffer;                 
    int buffer_size;              
    int first;                    
    int last;                     
} ring_buffer_t;


extern void ring_initialize(ring_buffer_t *ring,
                            char *buffer, const int shift_length);


extern void ring_clear(ring_buffer_t *ring);


extern int ring_size(const ring_buffer_t *ring);


extern int ring_capacity(const ring_buffer_t *ring);


extern int ring_write(ring_buffer_t *ring, const char *data, int size);


extern int ring_read(ring_buffer_t *ring, char *buffer, int size);

#endif /* ! RING_BUFFER_H */