Memcpy

Function Usage

Memory copy function, which copies data between the host and device based on the memory location specified in MemoryData.

Prototype

static APP_ERROR Memcpy(MemoryData& dest, const MemoryData& src, size_t count);

Parameter Description

Parameter	Input/Output	Description
dest	Input	Destination memory to be copied dest.ptrData cannot be a null pointer.
src	Input	Source memory to be copied src.ptrData cannot be a null pointer.
count	Input	Length of the copied data. The length must be set based on the length of the target memory and source memory. If the length is incorrectly set, a core dump may occur.

Parameter

Input/Output

Description

dest

Input

Destination memory to be copied

dest.ptrData cannot be a null pointer.

src

Input

Source memory to be copied

src.ptrData cannot be a null pointer.

count

Input

Length of the copied data. The length must be set based on the length of the target memory and source memory. If the length is incorrectly set, a core dump may occur.

Return Parameter Description

Data Structure	Description
APP_ERROR	Error code returned during program execution. For details, see the MxBase/ErrorCode/ErrorCode.h file.

Parent topic: MemoryHelper