acltdtSetBufDataLen

Applicable Products

Product	Supported
Ascend 950PR/Ascend 950DT	x
Atlas A3 training products/Atlas A3 inference products	x
Atlas A2 training products/Atlas A2 inference products	x
Atlas 200I/500 A2 inference products	√
Atlas inference products	x
Atlas training products	x

Function

Sets the length of the valid data in the shared buffer.

API call sequence: Call acltdtAllocBuf or acltdtCopyBufRef to allocate the shared buffer, call acltdtGetBufData to obtain the memory pointer to and length of the shared buffer, and fill valid data in the buffer. Then, call acltdtSetBufDataLen to set the length of the valid data in the shared buffer to a value less than that obtained by calling acltdtGetBufData.

Prototype

aclError acltdtSetBufDataLen(acltdtBuf buf, size_t len)

Parameters

Parameter	Input/Output	Description
buf	Input	Pointer to the shared buffer. For details about the type definition, see acltdtBuf. The shared buffer must be obtained by calling acltdtAllocBuf or acltdtCopyBufRef.
len	Input	Length of valid data, in bytes.

Parameter

Input/Output

Description

buf

Input

Pointer to the shared buffer. For details about the type definition, see acltdtBuf.

The shared buffer must be obtained by calling acltdtAllocBuf or acltdtCopyBufRef.

len

Input

Length of valid data, in bytes.

Returns

0 on success; otherwise, failure. For details, see aclError.

Parent topic: Shared Buffer Management