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74 lines
1.4 KiB
74 lines
1.4 KiB
#pragma once
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#include <stdint.h>
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#include <stdio.h>
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#define DB_VERSION 0xabcd1234 // 如果该数值不一致，则更新清空数据库
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typedef struct {
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const char* name;
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uint32_t add;
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uint32_t itermSize;
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uint32_t itermMaxNum;
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} zhdb_table_t;
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typedef struct {
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uint32_t version;
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} zhdb_header_t;
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void zhdb_init();
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void zhdb_reg_table_info(const char* name, uint32_t itermSize, uint32_t itermMaxNum);
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void zhdb_before_run_prepare();
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void zhdb_read_table(const char* name, void* cache, uint32_t cachelen);
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void zhdb_write_item(uint32_t add, const char* data, size_t len);
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// add
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// --> readall
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// --> findNextPos
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// --> forceFindNextPos
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// --> write
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// void
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// void writetostorage();
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// readall()
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// sort
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// update()
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//+++++++++++++++++++++++++++++++++
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// cache (dirty)
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//+++++++++++++++++++++++++++++++++
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// storage
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//+++++++++++++++++++++++++++++++++
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//
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// Dao
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// find
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// getALL() -> table_add, table_size, iterm_size, iterm_num (预留的空间越大，则查询的时间越长)，
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// 但这样反而能保证设备的一致性
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// delete
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//
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//
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//
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// 上电之后，遍历所有存储，记录一些速查标记，记录在table结构体里面
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// 分页查询，
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//
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// 纯内存数据结果呢？上千条记录
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// 遍查询，遍筛选数据（可用于分页？？？？）
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// 分页实现方案，通过条总数
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// 如何实现按顺序分页
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//
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// tabl
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// table_add
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// table_size
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//
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// search all
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//
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// delete
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