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bpo-43613: Faster implementation of gzip.compress and gzip.decompress (GH-27941)

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Co-authored-by: Łukasz Langa <lukasz@langa.pl>
This commit is contained in:
Ruben Vorderman 2021-09-02 17:02:59 +02:00 • committed by GitHub
parent a7ef15aae8
commit ea23e7820f
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8 changed files with 195 additions and 89 deletions
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9
Modules/zlibmodule.c
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@ -310,13 +310,15 @@ zlib.compress
/
level: int(c_default="Z_DEFAULT_COMPRESSION") = Z_DEFAULT_COMPRESSION
Compression level, in 0-9 or -1.
wbits: int(c_default="MAX_WBITS") = MAX_WBITS
The window buffer size and container format.
Returns a bytes object containing compressed data.
[clinic start generated code]*/
static PyObject *
zlib_compress_impl(PyObject *module, Py_buffer *data, int level)
/*[clinic end generated code: output=d80906d73f6294c8 input=638d54b6315dbed3]*/
zlib_compress_impl(PyObject *module, Py_buffer *data, int level, int wbits)
/*[clinic end generated code: output=46bd152fadd66df2 input=c4d06ee5782a7e3f]*/
{
PyObject *RetVal;
int flush;
@ -336,7 +338,8 @@ zlib_compress_impl(PyObject *module, Py_buffer *data, int level)
zst.zalloc = PyZlib_Malloc;
zst.zfree = PyZlib_Free;
zst.next_in = ibuf;
int err = deflateInit(&zst, level);
int err = deflateInit2(&zst, level, DEFLATED, wbits, DEF_MEM_LEVEL,
Z_DEFAULT_STRATEGY);
switch (err) {
case Z_OK: