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Figure 2-7 illustrates the Pipe function process.
FCU
.
start
|
create a named pipe
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open pipe(‘w’ mode)
|
waiting send data entries
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send data OK
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write data
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close pipe
|
end
Figure 2-7
Application/Utility Program
|
|
open pipe(‘r’ mode)
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waiting receive data entries
|
|
receive data OK
|
read data
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close pipe
|
|
Pipe Function Process Outline
Padding (PAD) Option
The padding option can be used for FXmto with variable-length source
datasets and for FXotm with fixed-length target datasets. When the padding
option is specified for FXmto, FCU adds padding to each source data record, so
that the length of the each record equals the maximum record length. When
padding is specified for FXotm, FCU adds padding to each source data entity,
so that the length of the each target record equals the record length defined
for the target dataset. FCU transfers the data entities with padding to the
target file/dataset. FCU cannot extract padding from files or datasets. Sections
FXmto Operations and FXmto with Multiple Volume Datasets describe FXmto
and FXotm operations with padding.
The type of padding added by FCU depends on whether code conversion was
also requested:
•
Padding with code conversion (text files). When padding and code
conversion are both specified, FCU adds spaces to the short data entities as
needed.
•
Padding without code conversion (binary data files). When padding is
specified but code conversion is not, FCU adds 0x00 to the short data
entities as needed.
About Cross-OS File Exchange Operations
Hitachi USP V Cross-OS File Exchange User’s Guide
2-13