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1# purgeable_memory.h
2
3
4## 概述
5
6声明从native层管理可丢弃内存的方法。
7
8**起始版本：**
9
1010
11
12**相关模块:**
13
14[Memory](memory.md)
15
16
17## 汇总
18
19
20### 类型定义
21
22| 名称 | 描述 |
23| -------- | -------- |
24| [OH_PurgeableMemory](memory.md#oh_purgeablememory) | 用于定义OH_PurgeableMemory数据类型名称。 |
25| (\*[OH_PurgeableMemory_ModifyFunc](memory.md#oh_purgeablememory_modifyfunc)) (void \*, size_t, void \*) | 用于重建可丢弃内存PurgeableMemory数据的方法。 |
26
27
28### 函数
29
30| 名称 | 描述 |
31| -------- | -------- |
32| \*[OH_PurgeableMemory_Create](memory.md#oh_purgeablememory_create) (size_t size, [OH_PurgeableMemory_ModifyFunc](memory.md#oh_purgeablememory_modifyfunc) func, void \*funcPara) | 创建**PurgeableMemory**对象。 |
33| [OH_PurgeableMemory_Destroy](memory.md#oh_purgeablememory_destroy) ([OH_PurgeableMemory](memory.md#oh_purgeablememory) \*purgObj) | 销毁**PurgeableMemory**对象。 |
34| [OH_PurgeableMemory_BeginRead](memory.md#oh_purgeablememory_beginread) ([OH_PurgeableMemory](memory.md#oh_purgeablememory) \*purgObj) | 开始读取**PurgeableMemory**对象。检查PurgeableMemory是否被回收， 若被回收则调用重建方法进行重建 |
35| [OH_PurgeableMemory_EndRead](memory.md#oh_purgeablememory_endread) ([OH_PurgeableMemory](memory.md#oh_purgeablememory) \*purgObj) | 结束读取**PurgeableMemory**对象。表示系统可回收该**PurgeableMemory**对象内存数据。 |
36| [OH_PurgeableMemory_BeginWrite](memory.md#oh_purgeablememory_beginwrite) ([OH_PurgeableMemory](memory.md#oh_purgeablememory) \*purgObj) | 开始修改**PurgeableMemory**对象。检查PurgeableMemory是否被回收， 若被回收则调用重建方法进行重建 |
37| [OH_PurgeableMemory_EndWrite](memory.md#oh_purgeablememory_endwrite) ([OH_PurgeableMemory](memory.md#oh_purgeablememory) \*purgObj) | 结束修改**PurgeableMemory**对象。表示系统可回收该**PurgeableMemory**对象内存数据。 |
38| [OH_PurgeableMemory_GetContent](memory.md#oh_purgeablememory_getcontent) ([OH_PurgeableMemory](memory.md#oh_purgeablememory) \*purgObj) | 获取**PurgeableMemory**对象内存数据。 |
39| [OH_PurgeableMemory_ContentSize](memory.md#oh_purgeablememory_contentsize) ([OH_PurgeableMemory](memory.md#oh_purgeablememory) \*purgObj) | 获取**PurgeableMemory**对象内存数据大小。 |
40| [OH_PurgeableMemory_AppendModify](memory.md#oh_purgeablememory_appendmodify) ([OH_PurgeableMemory](memory.md#oh_purgeablememory) \*purgObj, [OH_PurgeableMemory_ModifyFunc](memory.md#oh_purgeablememory_modifyfunc) func, void \*funcPara) | 添加**PurgeableMemory**对象的修改方法。 |
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