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Date: | Fri, 30 Mar 2001 10:45:32 -0500 |
From: | Christopher Faylor <cgf AT redhat DOT com> |
To: | cygwin-developers AT cygwin DOT com |
Subject: | Re: clearerr |
Message-ID: | <20010330104532.D12718@redhat.com> |
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References: | <02ff01c0b916$66480970$0200a8c0 AT lifelesswks> |
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In-Reply-To: | <02ff01c0b916$66480970$0200a8c0@lifelesswks>; from robert.collins@itdomain.com.au on Fri, Mar 30, 2001 at 09:33:49PM +1000 |
On Fri, Mar 30, 2001 at 09:33:49PM +1000, Robert Collins wrote: >I'm confused - newlib's clearerr calls __sclearerr, but I can't find >that anywhere. cygwin.dindefines clearerr and _clearerr, but I can't >find them in the source.. > >In testing the fifo semantics, I've found that the expected behaviour >for a fifo on freeBSD is that clearerr() should re-open the fifo, >allowing further writes to take take place.. > >i.e. > >a reader can loop >clearerr() >read to eof > >and the pipe can have multiple separate writers write to the pipe and >exit. Without clearerr or a rewind(), the pipe gets marked eof and stays >eof. > >most OS's seem to simply use rewind() to the same effect, so I'm >implementing that. The question I have is: will clearerr() actually call >any cygwin code? Why are you asking a question like this which is so easily verified by a simple test case? gdb is your friend. cgf
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