mirror of
https://github.com/fumiama/fumidb.git
synced 2026-06-05 16:50:33 +08:00
35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
#ifndef _TYPE_INT16_H_
|
||
#define _TYPE_INT16_H_
|
||
|
||
#include <stdint.h>
|
||
#include "../types.h"
|
||
|
||
#define INT16_INDEX_SZ ( 8*3 + 256*8 )
|
||
#define INT16_BITMAP_SZ ( 65536/8 )
|
||
#define INT16_CHAIN_SZ ( (256+1)*8 )
|
||
|
||
// len(buf) >= INT16_INDEX_SZ+10 + INT16_BITMAP_SZ+8*2 = 10290
|
||
// &buf[0] ~ &buf[2081] is index, index = buf+10
|
||
// &buf[2082] ~ &buf[6185] is the first page of bitmap, ptr = buf+2090
|
||
// &buf[6186] ~ &buf[10289] is the second page of bitmap, ptr = buf+6194
|
||
// 返回：index = buf+10
|
||
void* create_int16_index(int fd, void* buf);
|
||
|
||
// len(buf) >= INT16_INDEX_SZ+10 + INT16_BITMAP_SZ+8*2 = 10290
|
||
// &buf[0] ~ &buf[2081] is index, index = buf+10
|
||
// &buf[2082] ~ &buf[6185] is the first page of bitmap, ptr = buf+2090
|
||
// &buf[6186] ~ &buf[10289] is the second page of bitmap, ptr = buf+6194
|
||
// 返回：index = buf+10
|
||
void* load_int16_index(int fd, uint64_t ptr, void* buf);
|
||
|
||
int remove_int16_index(int fd, void* index);
|
||
|
||
uint64_t count_int16_items(int fd, void* index);
|
||
|
||
int insert_int16_item(int fd, void* index, key_t k, uint64_t ptr);
|
||
|
||
uint64_t find_item_by_int16_key(int fd, void* index, key_t k);
|
||
|
||
uint64_t remove_item_by_int16_key(int fd, void* index, key_t k);
|
||
|
||
#endif |