scsl/Arena.h

35 lines
720 B
C++

#ifndef KIMODEM_ARENA_H
#define KIMODEM_ARENA_H
#include <sys/stat.h>
#include <cstddef>
#include <cstdint>
typedef struct {
uint8_t *store;
size_t size;
int fd;
uint8_t type;
} Arena;
int new_arena(Arena &, uint8_t *, size_t);
int alloc_new_arena(Arena &, size_t);
#if defined(__linux__)
int mmap_arena(Arena &, int); /* arena will own fd */
int create_arena(Arena &arena, const char *path, size_t size, mode_t mode);
int open_arena(Arena &, const char *, size_t);
#endif
void arena_clear(Arena &);
int arena_destroy(Arena &); /* dispose of any memory used by arena */
/* DANGER: if arena is file backed (mmap or open), DO NOT WRITE TO THE
* BACKING FILE! */
int write_arena(const char *);
#endif