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27 lines
772 B
27 lines
772 B
4 months ago
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#!/usr/bin/env bash
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# This script is used to deflake inherently flaky tsan tests.
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# It is invoked from lit tests as:
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# %deflake $THRESHOLD mybinary
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# which is then substituted by lit to:
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# $(dirname %s)/deflake.bash $THRESHOLD mybinary
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# - When TSAN_TEST_DEFLAKE_THRESHOLD is defined to a positive integer value,
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# THRESHOLD will be the defined value.
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# - When TSAN_TEST_DEFLAKE_THRESHOLD is not defined, THRESHOLD will be 10.
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# The script runs the target program up to $THRESHOLD times,
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# until it fails (i.e. produces a race report).
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THRESHOLD="${1}"
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shift
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# Early exit if $THRESHOLD is not a non-negative integer
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[[ "${THRESHOLD}" =~ ^[0-9]+$ ]] || exit 1
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while (( THRESHOLD-- )); do
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OUT=`$@ 2>&1`
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if [[ $? != 0 ]]; then
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echo "$OUT"
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exit 0
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fi
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done
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exit 1
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