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46 lines
1.7 KiB
Bash
Executable File
46 lines
1.7 KiB
Bash
Executable File
#!/bin/sh
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# trigger a bug that would make parallel sort use 100% of one or more
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# CPU while blocked on output.
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# Copyright (C) 2010-2012 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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. "${srcdir=.}/init.sh"; path_prepend_ ../src
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print_ver_ sort
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# This isn't terribly expensive, but it must not be run under heavy load.
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# Since the "very expensive" tests are already run only with -j1, adding
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# this test to the list ensures it still gets _some_ (albeit minimal)
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# coverage while not causing false-positive failures in day to day runs.
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very_expensive_
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grep '^#define HAVE_PTHREAD_T 1' "$CONFIG_HEADER" > /dev/null ||
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skip_ 'requires pthreads'
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seq 100000 > in || framework_failure_
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mkfifo_or_skip_ fifo
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# Arrange for sort to require 8.0+ seconds of wall-clock time,
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# while actually using far less than 1 second of CPU time.
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(for i in $(seq 80); do read line; echo $i; sleep .1; done
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cat > /dev/null) < fifo &
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# However, under heavy load, it can easily take more than
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# one second of CPU time, so set a permissive limit:
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ulimit -t 7
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sort --parallel=2 in > fifo || fail=1
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Exit $fail
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