From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2140) id DA2F33835757; Wed, 22 Jun 2022 05:22:54 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org DA2F33835757 Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Alexandre Oliva To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc(refs/users/aoliva/heads/testme)] libstdc++: 60241.cc: tolerate slightly shorter aggregate sleep X-Act-Checkin: gcc X-Git-Author: Alexandre Oliva X-Git-Refname: refs/users/aoliva/heads/testme X-Git-Oldrev: 82ea4c64c40b950d38b3808412627cf91f7f67b8 X-Git-Newrev: 8b555d2b49171c4b0a327104e359e4ebc7e5cca2 Message-Id: <20220622052254.DA2F33835757@sourceware.org> Date: Wed, 22 Jun 2022 05:22:54 +0000 (GMT) X-BeenThere: libstdc++-cvs@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libstdc++-cvs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Jun 2022 05:22:55 -0000 https://gcc.gnu.org/g:8b555d2b49171c4b0a327104e359e4ebc7e5cca2 commit 8b555d2b49171c4b0a327104e359e4ebc7e5cca2 Author: Alexandre Oliva Date: Mon Jun 20 20:44:10 2022 -0300 libstdc++: 60241.cc: tolerate slightly shorter aggregate sleep On rtems under qemu, the frequently-interrupted nanosleep ends up sleeping shorter than expected, by a margin of less than 0,3%. I figured failing the library test over a system (emulator?) bug is undesirable, so I put in some tolerance for the drift. for libstdc++-v3/ChangeLog * testsuite/30_threads/this_thread/60421.cc: Tolerate a slightly early wakeup. Diff: --- libstdc++-v3/testsuite/30_threads/this_thread/60421.cc | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libstdc++-v3/testsuite/30_threads/this_thread/60421.cc b/libstdc++-v3/testsuite/30_threads/this_thread/60421.cc index 12dbeba1cc4..f3a5af453c4 100644 --- a/libstdc++-v3/testsuite/30_threads/this_thread/60421.cc +++ b/libstdc++-v3/testsuite/30_threads/this_thread/60421.cc @@ -51,9 +51,10 @@ test02() std::thread t([&result, &sleeping] { auto start = std::chrono::system_clock::now(); auto time = std::chrono::seconds(3); + auto tolerance = std::chrono::milliseconds(10); sleeping = true; std::this_thread::sleep_for(time); - result = std::chrono::system_clock::now() >= (start + time); + result = std::chrono::system_clock::now() + tolerance >= (start + time); sleeping = false; }); while (!sleeping)