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[3.15] gh-160549: Fix crash when freeing a busy multi-threaded ZstdCompressor (GH-160550) - #160637
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…pressor (pythonGH-160550) ZSTD_freeCCtx() frees a dictionary loaded with ZSTD_CCtx_loadDictionary() before it stops the worker threads. Make libzstd wait for unfinished jobs before freeing the compression context of a ZstdCompressor that uses worker threads and a ZstdDict. Works around facebook/zstd#4862 (cherry picked from commit 23a5ba1c932e63ec811d6d9095ac80f580dfe102) Co-authored-by: Gregory P. Smith <68491+gpshead@users.noreply.github.com>
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ZSTD_freeCCtx() frees a dictionary loaded with ZSTD_CCtx_loadDictionary()
before it stops the worker threads. Make libzstd wait for unfinished
jobs before freeing the compression context of a ZstdCompressor that
uses worker threads and a ZstdDict.
Works around facebook/zstd#4862
(cherry picked from commit 23a5ba1)
Co-authored-by: Gregory P. Smith 68491+gpshead@users.noreply.github.com
ZstdCompressorwith aZstdDictis freed while compressing #160549