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42 lines
976 B
C
42 lines
976 B
C
#ifndef _TYPES_H_
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#define _TYPES_H_
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#include <stdint.h>
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#include <errno.h>
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#define TYPE_INT8 0
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#define TYPE_INT16 1
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#define TYPE_INT32 2
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#define TYPE_INT64 3
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#define TYPE_FLOAT 4
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#define TYPE_DOUBLE 5
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#define TYPE_STRING 6
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#define TYPE_BINARY 7
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#define EXTYPE_NULL 0x00
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#define EXTYPE_UNIQUE 0x40
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#define EXTYPE_NONNULL 0x80
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#define EXTYPE_FOREIGNKEY 0xc0
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typedef uint8_t type_t;
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typedef uint64_t key_t;
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// 为类型 type 创建索引
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// 返回：索引头节点的指针 index
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void* create_index(int fd, type_t t);
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// 加载类型 type 的索引
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// 返回：索引头节点的指针 index
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void* load_index(int fd, type_t t, uint64_t ptr);
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// 插入一条索引
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int insert_item(int fd, type_t t, void* index, key_t k, uint64_t ptr);
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// 使用索引查找目标
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// 返回：ptr
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uint64_t find_item_by_key(int fd, type_t t, void* index, key_t k);
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// 使用索引删除项
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int remove_item_by_key(int fd, type_t t, void* index, key_t k);
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#endif |