---
title: CopyBetweenSameDevice
description: "将Device侧的src对象拷贝至Device侧的dst对象。两块TensorBuffer内存的deviceId相同。"
url: https://www.hiascend.com/document/detail/zh/Atlas200IDKA2DeveloperKit/latest/Application%20Development%20Guide/msadg/mxvisionug_0465.html
sourcePath: /source/zh/Atlas200IDKA2DeveloperKit/23.0.RC2/Application Development Guide/msadg/mxvisionug_0465.html
indexId: b3ca29de98f32035b0b799b82399aa47461203578b605e1ab58c928697c4e5e6102
---
# CopyBetweenSameDevice

#### 函数功能

将Device侧的src对象拷贝至Device侧的dst对象。两块TensorBuffer内存的deviceId相同。


#### 函数原型

```
static APP_ERROR CopyBetweenSameDevice(TensorBuffer &dst, const TensorBuffer &src);
```


#### 参数说明

| 参数名 | 输入/输出 | 说明 |
| --- | --- | --- |
| dst | 输入 | 复制后的目标内存。 |
| src | 输入 | 待复制的源内存。 |


#### 返回参数说明

| 数据结构 | 说明 |
| --- | --- |
| APP\_ERROR | 程序执行返回的错误码，请参考APP\_ERROR说明。 |