Re: [Boost-users] iostreams::stream: flush doesn't work but endl does

From: Eric MALENFANT (Eric.Malenfant_at_[hidden])
Date: 2008-01-23 09:36:04

boost-users-bounces_at_[hidden], le 23 janvier 2008 07:07:
> Hi all,
> 
> I've created my own iostreams device (for a serial port) which for
> debugging purposes prints out calls to read()/write().
> 
> I'm constructing a stream on the device like this:
>     serial_device serial("/dev/ttyS3", serial_device::Baud38400);
>     stream<serial_device> s(serial);
> 
> If I do this:
>     s << "hello world" << endl;
> serial.write() is called and does its debug output, but with this:
>     s << "hello world\r" << flush;
> I get nothing despite using 'flush'.
> 
> I've also tried calling s.flush() manually but get the same
> lack of effect.
> How come flush isn't working as it should here?

A wild guess: Does serial_device implement the "Flushable" concept?
http://www.boost.org/libs/iostreams/doc/index.html?path=4.1.3.2

Éric Malenfant
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