1e41f4b71Sopenharmony_ci# purgeable_memory.h 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci## 概述 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_ci声明从native层管理可丢弃内存的方法。 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci**起始版本：** 9e41f4b71Sopenharmony_ci 10e41f4b71Sopenharmony_ci10 11e41f4b71Sopenharmony_ci 12e41f4b71Sopenharmony_ci**相关模块:** 13e41f4b71Sopenharmony_ci 14e41f4b71Sopenharmony_ci[Memory](memory.md) 15e41f4b71Sopenharmony_ci 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ci## 汇总 18e41f4b71Sopenharmony_ci 19e41f4b71Sopenharmony_ci 20e41f4b71Sopenharmony_ci### 类型定义 21e41f4b71Sopenharmony_ci 22e41f4b71Sopenharmony_ci| 名称 | 描述 | 23e41f4b71Sopenharmony_ci| -------- | -------- | 24e41f4b71Sopenharmony_ci| [OH_PurgeableMemory](memory.md#oh_purgeablememory) | 用于定义OH_PurgeableMemory数据类型名称。 | 25e41f4b71Sopenharmony_ci| (\*[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。 | 26e41f4b71Sopenharmony_ci 27e41f4b71Sopenharmony_ci 28e41f4b71Sopenharmony_ci### 函数 29e41f4b71Sopenharmony_ci 30e41f4b71Sopenharmony_ci| 名称 | 描述 | 31e41f4b71Sopenharmony_ci| -------- | -------- | 32e41f4b71Sopenharmony_ci| \*[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。 | 33e41f4b71Sopenharmony_ci| [OH_PurgeableMemory_Destroy](memory.md#oh_purgeablememory_destroy) ([OH_PurgeableMemory](memory.md#oh_purgeablememory) \*purgObj) | 销毁**PurgeableMemory**对象。 | 34e41f4b71Sopenharmony_ci| [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 | 35e41f4b71Sopenharmony_ci| [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。 | 36e41f4b71Sopenharmony_ci| [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 | 37e41f4b71Sopenharmony_ci| [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。 | 38e41f4b71Sopenharmony_ci| [OH_PurgeableMemory_GetContent](memory.md#oh_purgeablememory_getcontent) ([OH_PurgeableMemory](memory.md#oh_purgeablememory) \*purgObj) | 获取**PurgeableMemory**对象内存数据。 | 39e41f4b71Sopenharmony_ci| [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。 | 40e41f4b71Sopenharmony_ci| [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。 | 41