tor_multipath_voip/src/utils.h

#pragma once
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>

// 1500 = internet MTU
#define RING_BUFFER_SIZE 1500*10

struct ring_buffer {
  char buffer[RING_BUFFER_SIZE];
  int head;
  int tail;
};

int ring_buffer_read(struct ring_buffer* rb, char* dest, int size);
void ring_buffer_ack_read(struct ring_buffer* rb, int size);
int ring_buffer_write(struct ring_buffer* rb, char* source, int size);
int ring_buffer_free_space(struct ring_buffer* rb);
int ring_buffer_used_space(struct ring_buffer* rb);

int ring_gt(uint16_t v1, uint16_t v2);
int ring_ge(uint16_t v1, uint16_t v2);
int ring_lt(uint16_t v1, uint16_t v2);
int ring_le(uint16_t v1, uint16_t v2);

uint64_t elapsed_micros(struct timespec* t1, struct timespec* t2);