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Takashi Yano be635ebc2f Cygwin: pipe: Fix performance degradation for non-cygwin pipe.
https://cygwin.com/pipermail/cygwin/2022-December/252628.html

After the commit 9e4d308cd592, the performance of read from non-cygwin
pipe has been degraded. This is because select_sem mechanism does not
work for non-cygwin pipe. This patch fixes the issue.

Fixes: 9e4d308cd592 ("Cygwin: pipe: Adopt FILE_SYNCHRONOUS_IO_NONALERT
flag for read pipe.")
Reported-by: tryandbuy <tryandbuy@proton.me>
Reviewed-by: Corinna Vinschen <corinna@vinschen.de>
Signed-off-by: Takashi Yano <takashi.yano@nifty.ne.jp>
2022-12-09 21:01:29 +09:00

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Bug Fixes
---------
- Fix an error introduced into the build process, resulting in `gcc -pg'
becoming disfunctional.
Addresses: https://cygwin.com/pipermail/cygwin/2022-December/252619.html
- Fix a backward incompatibility problem in the definition of the
base type of the stdio type FILE. This requires that C++ binaries
compiled under Cygwin 3.4.0 having a public facing interface using
FILE need to be recompiled.
Addresses: https://savannah.gnu.org/bugs/index.php?63480
- Fix performance degradation of non-cygwin pipe.
Addresses: https://cygwin.com/pipermail/cygwin/2022-December/252628.html