cache_bench_io.h

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#pragma once
 
#include <stdarg.h>
#include <stddef.h>
#include <stdint.h>

typedef enum : uint8_t {
  k_cb_io_ok       = 0U, 
  k_cb_io_fault    = 1U, 
  k_cb_io_capacity = 2U, 
  k_cb_io_mutated  = 3U, 
} cb_io_status_t;

typedef cb_io_status_t (
  *cb_source_read_fn)(void* ctx, uint64_t offset, uint8_t* dst, size_t capacity, size_t* out_read);

typedef struct {
  cb_source_read_fn read; 
  void*             ctx;  
  uint64_t          size; 
} cb_source_t;

typedef cb_io_status_t (*cb_sink_write_fn)(void*          ctx,
                                           const uint8_t* data,
                                           size_t         length,
                                           size_t*        out_written);

typedef struct {
  cb_sink_write_fn write; 
  void*            ctx;   
} cb_sink_t;

typedef cb_io_status_t (*cb_scratch_io_fn)(void* ctx, uint64_t offset, void* data, size_t length);

typedef struct {
  cb_scratch_io_fn read;  
  cb_scratch_io_fn write; 
  void*            ctx;   
  uint64_t         size;  
} cb_scratch_t;

cb_io_status_t cb_sink_write_all(cb_sink_t* sink, const void* data, size_t length);

cb_io_status_t cb_sink_vformat(cb_sink_t* sink, const char* format, va_list args);

cb_io_status_t cb_sink_format(cb_sink_t* sink, const char* format, ...);