harmony 鸿蒙DDK_Ashmem
DDK_Ashmem
Overview
Defines the data structure of Ashmem objects.
Since
12
Related module
Header file: ddk_types.h
Summary
Member Variables
| Name | Description |
|---|---|
| ashmemFd | File descriptor of the Ashmem object. |
| address | Mapping address of the Ashmem object. |
| size | Length of the data array. |
| offset | Data offset. |
| bufferLength | Length of the data array that is actually used. |
| transferredLength | Length of the data to transfer. |
Member Variable Description
ashmemFd
int32_t ashmemFd
Description
File descriptor of the Ashmem object.
address
const uint8_t * address
Description
Mapping address of the Ashmem object.
size
const uint32_t size
Description
Length of the data array.
offset
uint32_t offset
Description
Data offset.
bufferLength
uint32_t bufferLength
Description
Length of the data array that is actually used.
transferredLength
uint32_t transferredLength
Description
Length of the data to transfer.
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