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Merge pull request #2299 from senhuang42/env_var_num_threads

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Allow environment variable to specify number of threads for compression
This commit is contained in:
Yann Collet
2020-09-14 14:04:19 -07:00
committed by GitHub
parent 517956e67d a71963c7b8
commit e583e0be8c
4 changed files with 59 additions and 8 deletions
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tests/playTests.sh
+13
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@@ -1202,6 +1202,19 @@ then
println "\n===> zstdmt long distance matching round-trip tests "
roundTripTest -g8M "3 --long=24 -T2"
println "\n===> zstdmt environment variable tests "
echo "multifoo" >> mt_tmp
ZSTD_NBTHREADS=-3 zstd -f mt_tmp # negative value, warn and revert to default setting
ZSTD_NBTHREADS='' zstd -f mt_tmp # empty env var, warn and revert to default setting
ZSTD_NBTHREADS=- zstd -f mt_tmp # malformed env var, warn and revert to default setting
ZSTD_NBTHREADS=a zstd -f mt_tmp # malformed env var, warn and revert to default setting
ZSTD_NBTHREADS=+a zstd -f mt_tmp # malformed env var, warn and revert to default setting
ZSTD_NBTHREADS=3a7 zstd -f mt_tmp # malformed env var, warn and revert to default setting
ZSTD_NBTHREADS=50000000000 zstd -f mt_tmp # numeric value too large, warn and revert to default setting=
ZSTD_NBTHREADS=2 zstd -f mt_tmp # correct usage
ZSTD_NBTHREADS=1 zstd -f mt_tmp # correct usage: single thread
rm mt_tmp*
println "\n===> ovLog tests "
datagen -g2MB > tmp
refSize=$(zstd tmp -6 -c --zstd=wlog=18 | wc -c)