From: Alexandre Oliva <oliva@adacore.com>
To: libstdc++@gcc.gnu.org
Cc: gcc-patches@gcc.gnu.org
Subject: Re: calibrate intervals to avoid zero in futures poll test
Date: Wed, 13 Jan 2021 14:00:49 -0300 [thread overview]
Message-ID: <orzh1c6abi.fsf@lxoliva.fsfla.org> (raw)
In-Reply-To: <ork0sr7rqq.fsf@lxoliva.fsfla.org> (Alexandre Oliva's message of "Tue, 05 Jan 2021 04:44:13 -0300")
On Jan 5, 2021, Alexandre Oliva <oliva@adacore.com> wrote:
> We get occasional failures of 30_threads/future/members/poll.cc
> on some platforms whose high resolution clock doesn't have such a high
> resolution; wait_for_0 ends up as 0, and then some asserts fail as
> intervals measured as longer than zero are tested for less than
> several times zero.
> This patch adds some calibration in the iteration count to set a
> measurable base time interval with some additional margin.
> Regstrapped on x86_64-linux-gnu, and also tested on
> x-arm-wrs-vxworks7r2. Ok to install?
Ping?
https://gcc.gnu.org/pipermail/gcc-patches/2021-January/562796.html
> for libstdc++-v3/ChangeLog
> * testsuite/30_threads/future/members/poll.cc: Calibrate
> iteration count.
--
Alexandre Oliva, happy hacker https://FSFLA.org/blogs/lxo/
Free Software Activist GNU Toolchain Engineer
Vim, Vi, Voltei pro Emacs -- GNUlius Caesar
next prev parent reply other threads:[~2021-01-13 17:00 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-05 7:44 Alexandre Oliva
2021-01-13 17:00 ` Alexandre Oliva [this message]
2021-01-14 12:54 ` Jonathan Wakely
2021-01-14 18:57 ` Alexandre Oliva
2021-02-08 9:59 ` Christophe Lyon
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