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IDProjectCategoryView StatusDate SubmittedLast Update
0003075OCamlstandard librarypublic2004-08-18 13:332016-12-07 18:17
Assigned Tofrisch 
PlatformOSOS Version
Product Version 
Target VersionFixed in Version 
Summary0003075: Feature request: "select" on channels

I'd like to know whether there are plans to add "select" for I/O-channels
to the standard library.

It should behave as follows for in_channels: if there is data in the
buffer, return. If not, then perform a select with a given timeout on
the underlying descriptor.

For output channels: if the buffer is full, then perform a select with
a given timeout on the underlying descriptor, otherwise return.

There should also be an output function for out_channels that does not
block if data cannot be fully written to the descriptor. It could return
a tuple of the amount of bytes that were actually sent and the amount
of bytes of this data that were actually sent. This way an application
can notice that it should attempt sending further data/requests to a
different destination.

Btw., it would also be nice if one could specify (and query) the buffer
size for channels at runtime. The hard-coded IO_BUFFER_SIZE of 4096
may not be optimal for certain kinds of descriptors, e.g. sockets:
their send- and receive buffers may have other sizes.


Markus Mottl [^]

TagsNo tags attached.
Attached Files

- Relationships
has duplicate 0003579resolvedfrisch "select" on Pervasives.in_channel 

-  Notes
frisch (developer)
2016-12-07 18:17
edited on: 2016-12-07 18:18

No activity for more than 10 years. Marking as suspended.

- Issue History
Date Modified Username Field Change
2005-11-18 10:13 administrator New Issue
2009-08-20 14:33 xclerc Relationship added has duplicate 0003579
2016-12-07 18:08 shinwell Category OCaml general => OCaml standard library
2016-12-07 18:08 shinwell Description Updated View Revisions
2016-12-07 18:17 frisch Note Added: 0016758
2016-12-07 18:17 frisch Status acknowledged => resolved
2016-12-07 18:17 frisch Resolution open => suspended
2016-12-07 18:17 frisch Assigned To => frisch
2016-12-07 18:18 frisch Note Edited: 0016758 View Revisions
2017-02-23 16:43 doligez Category OCaml standard library => standard library

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