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/*
*
*/
#ifndef CIRCULAR_BUFFER_H
#define CIRCULAR_BUFFER_H
#include "rust_globals.h"
#include "rust_kernel.h"
class
circular_buffer : public kernel_owned<circular_buffer> {
static const size_t INITIAL_CIRCULAR_BUFFER_SIZE_IN_UNITS = 8;
public:
rust_kernel *kernel;
// Size of the data unit in bytes.
const size_t unit_sz;
circular_buffer(rust_kernel *kernel, size_t unit_sz);
~circular_buffer();
void transfer(void *dst);
void enqueue(void *src);
void dequeue(void *dst);
uint8_t *peek();
bool is_empty();
size_t size();
private:
size_t initial_size();
void grow();
void shrink();
// Size of the buffer in bytes.
size_t _buffer_sz;
// Byte offset within the buffer where to read the next unit of data.
size_t _next;
// Number of bytes that have not been read from the buffer.
size_t _unread;
// The buffer itself.
uint8_t *_buffer;
};
//
// Local Variables:
// mode: C++
// fill-column: 78;
// indent-tabs-mode: nil
// c-basic-offset: 4
// buffer-file-coding-system: utf-8-unix
// compile-command: "make -k -C $RBUILD 2>&1 | sed -e 's/\\/x\\//x:\\//g'";
// End:
//
#endif /* CIRCULAR_BUFFER_H */
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