magic.h

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#pragma once
 
#include <stdint.h>
#include <stdbool.h>
 
/* ============================================================================
 * Magic Number Definitions
 * ============================================================================ */
 
#define MAGIC_FRAME_VALID 0xA5C11C4A1ULL
 
#define MAGIC_FRAME_FREED 0xFEEDFACEU
 
#define MAGIC_BUFFER_POOL_VALID 0xBF00B001U
 
#define MAGIC_BUFFER_POOL_FALLBACK 0xBF00FA11U
 
#define MAGIC_PACKET_VALID 0xA5C11C4A1ULL
 
/* ============================================================================
 * Validation Macros
 * ============================================================================ */
 
#define IS_MAGIC_VALID(magic, expected) ((magic) == (expected))
 
#define IS_FRAME_VALID(frame) ((frame)->magic == MAGIC_FRAME_VALID && (frame)->data != NULL)
 
#define IS_FRAME_FREED(frame) ((frame)->magic == MAGIC_FRAME_FREED)
 
#define IS_BUFFER_POOL_VALID(node)                                                                                     \
  ((node)->magic == MAGIC_BUFFER_POOL_VALID || (node)->magic == MAGIC_BUFFER_POOL_FALLBACK)
 
#define MARK_FRAME_FREED(frame) ((frame)->magic = MAGIC_FRAME_FREED)