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libdeflate.h: add note about thread-safety

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Eric Biggers 2016-08-27 23:13:20 -07:00
parent 3992efa340
commit 268d2fe602
1 changed files with 6 additions and 0 deletions
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6
libdeflate.h
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@ -44,6 +44,9 @@ struct libdeflate_compressor;
* Note: for compression, the sliding window size is defined at compilation time * Note: for compression, the sliding window size is defined at compilation time
* to 32768, the largest size permissible in the DEFLATE format. It cannot be * to 32768, the largest size permissible in the DEFLATE format. It cannot be
* changed at runtime. * changed at runtime.
*
* A single compressor is not safe to use by multiple threads concurrently.
* However, different threads may use different compressors concurrently.
*/ */
LIBDEFLATEAPI struct libdeflate_compressor * LIBDEFLATEAPI struct libdeflate_compressor *
libdeflate_alloc_compressor(unsigned int compression_level); libdeflate_alloc_compressor(unsigned int compression_level);
@ -147,6 +150,9 @@ struct libdeflate_decompressor;
* This function takes no parameters, and the returned decompressor is valid for * This function takes no parameters, and the returned decompressor is valid for
* decompressing data that was compressed at any compression level and with any * decompressing data that was compressed at any compression level and with any
* sliding window size. * sliding window size.
*
* A single decompressor is not safe to use by multiple threads concurrently.
* However, different threads may use different decompressors concurrently.
*/ */
LIBDEFLATEAPI struct libdeflate_decompressor * LIBDEFLATEAPI struct libdeflate_decompressor *
libdeflate_alloc_decompressor(void); libdeflate_alloc_decompressor(void);