src/ring_buffer.h

   1 #ifndef RING_BUFFER_H_
   2 #define RING_BUFFER_H_
   3
   4 #include <assert.h>
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <stdint.h>
   8 #include <string.h>
   9
  10 typedef void (*RingBufferDtor)(void *element);
  11
  12 typedef struct {
  13     size_t element_size;
  14     size_t capacity;
  15     size_t count;
  16     size_t begin;
  17     uint8_t *data;
  18 } RingBuffer;
  19
  20 static inline
  21 RingBuffer create_ring_buffer_from_buffer(Memory *memory,
  22                                           size_t element_size,
  23                                           size_t capacity)
  24 {
  25     RingBuffer result = {0};
  26     result.element_size = element_size;
  27     result.capacity = capacity;
  28     result.data = memory_alloc(memory, result.element_size * result.capacity);
  29     return result;
  30 }
  31
  32 void ring_buffer_push(RingBuffer *buffer, void *element);
  33 int ring_buffer_pop(RingBuffer *buffer);
  34 void *ring_buffer_top(RingBuffer *buffer);
  35
  36 #endif  // RING_BUFFER_H_