get_io_channel_paramT_get_io_channel_paramGetIoChannelParamGetIoChannelParamget_io_channel_param (算子)

名称

get_io_channel_paramT_get_io_channel_paramGetIoChannelParamGetIoChannelParamget_io_channel_param — 查询输入/输出通道的具体参数。

签名

get_io_channel_param( : : IOChannelHandle, GenParamName : GenParamValue)

描述

get_io_channel_paramget_io_channel_paramGetIoChannelParamGetIoChannelParamGetIoChannelParamget_io_channel_param queries settings of specific I/O transmission channels. The query parameters are passed in GenParamNameGenParamNameGenParamNameGenParamNamegenParamNamegen_param_name, the corresponding configuration values are returned in GenParamValueGenParamValueGenParamValueGenParamValuegenParamValuegen_param_value. IOChannelHandleIOChannelHandleIOChannelHandleIOChannelHandleIOChannelHandleiochannel_handle specifies the channels returned in open_io_channelopen_io_channelOpenIoChannelOpenIoChannelOpenIoChannelopen_io_channel for a specific device instance.

Please check the directory doc/html/reference/io for documentation about your specific I/O device interface, where all supported channel-specific parameters are listed.

执行信息

多线程类型：可重入（与非独占算子并行运行）。
多线程作用域：全局（可从任何线程调用）。
未采用并行化处理。

参数

IOChannelHandleIOChannelHandleIOChannelHandleIOChannelHandleIOChannelHandleiochannel_handle (输入控制) io_channel(-array) → (handle)

Handles of the opened I/O channels.

GenParamNameGenParamNameGenParamNameGenParamNamegenParamNamegen_param_name (输入控制) string(-array) → (string)

Parameter names.

默认值： 'param_name' "param_name" "param_name" "param_name" "param_name" "param_name"

建议值： 'io_channel_name'"io_channel_name""io_channel_name""io_channel_name""io_channel_name""io_channel_name", 'param_name'"param_name""param_name""param_name""param_name""param_name"

GenParamValueGenParamValueGenParamValueGenParamValuegenParamValuegen_param_value (输出控制) string-array → (string / integer / real / handle)

Parameter values.

结果

如果参数有效，算子 get_io_channel_paramget_io_channel_paramGetIoChannelParamGetIoChannelParamGetIoChannelParamget_io_channel_param 返回值 2 ( H_MSG_TRUE )。如有必要，则抛出异常。在这种情况下，可以设置扩展错误信息，并可进行查询通过算子 get_extended_error_infoget_extended_error_infoGetExtendedErrorInfoGetExtendedErrorInfoGetExtendedErrorInfoget_extended_error_info。

可能的前趋

open_io_channelopen_io_channelOpenIoChannelOpenIoChannelOpenIoChannelopen_io_channel

可能的后继

read_io_channelread_io_channelReadIoChannelReadIoChannelReadIoChannelread_io_channel, write_io_channelwrite_io_channelWriteIoChannelWriteIoChannelWriteIoChannelwrite_io_channel

另见

open_io_channelopen_io_channelOpenIoChannelOpenIoChannelOpenIoChannelopen_io_channel, query_io_devicequery_io_deviceQueryIoDeviceQueryIoDeviceQueryIoDevicequery_io_device, set_io_channel_paramset_io_channel_paramSetIoChannelParamSetIoChannelParamSetIoChannelParamset_io_channel_param

模块

基础

算子