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  r88460 | antoine.pitrou | 2011-02-21 19:03:13 +0100 (lun., 21 févr. 2011) | 4 lines

  Issue #10276: Fix the results of zlib.crc32() and zlib.adler32() on buffers
  larger than 4GB.  Patch by Nadeem Vawda.
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  r88464 | antoine.pitrou | 2011-02-21 20:05:08 +0100 (lun., 21 févr. 2011) | 3 lines

  Fix issues on 32-bit systems introduced by r88460
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  r88466 | antoine.pitrou | 2011-02-21 20:28:40 +0100 (lun., 21 févr. 2011) | 3 lines

  Fix compile error under MSVC introduced by r88460.
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  r88486 | antoine.pitrou | 2011-02-22 00:41:12 +0100 (mar., 22 févr. 2011) | 5 lines

  Issue #4681: Allow mmap() to work on file sizes and offsets larger than
  4GB, even on 32-bit builds.  Initial patch by Ross Lagerwall, adapted for
  32-bit Windows.
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  r88511 | antoine.pitrou | 2011-02-22 22:42:56 +0100 (mar., 22 févr. 2011) | 4 lines

  Issue #11277: finally fix Snow Leopard crash following r88460.
  (probably an OS-related issue with mmap)
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  r88652 | antoine.pitrou | 2011-02-26 16:58:05 +0100 (sam., 26 févr. 2011) | 4 lines

  Issue #9931: Fix hangs in GUI tests under Windows in certain conditions.
  Patch by Hirokazu Yamamoto.
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This commit is contained in:
Antoine Pitrou 2011-02-28 23:48:16 +00:00
parent 6c04569ada
commit 9e719b6eba
6 changed files with 210 additions and 54 deletions
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24
Modules/zlibmodule.c
View file

@ -931,8 +931,18 @@ PyZlib_adler32(PyObject *self, PyObject *args)
/* Releasing the GIL for very small buffers is inefficient
and may lower performance */
if (pbuf.len > 1024*5) {
unsigned char *buf = pbuf.buf;
Py_ssize_t len = pbuf.len;
Py_BEGIN_ALLOW_THREADS
adler32val = adler32(adler32val, pbuf.buf, pbuf.len);
/* Avoid truncation of length for very large buffers. adler32() takes
length as an unsigned int, which may be narrower than Py_ssize_t. */
while (len > (size_t) UINT_MAX) {
adler32val = adler32(adler32val, buf, UINT_MAX);
buf += (size_t) UINT_MAX;
len -= (size_t) UINT_MAX;
}
adler32val = adler32(adler32val, buf, len);
Py_END_ALLOW_THREADS
} else {
adler32val = adler32(adler32val, pbuf.buf, pbuf.len);
@ -959,8 +969,18 @@ PyZlib_crc32(PyObject *self, PyObject *args)
/* Releasing the GIL for very small buffers is inefficient
and may lower performance */
if (pbuf.len > 1024*5) {
unsigned char *buf = pbuf.buf;
Py_ssize_t len = pbuf.len;
Py_BEGIN_ALLOW_THREADS
signed_val = crc32(crc32val, pbuf.buf, pbuf.len);
/* Avoid truncation of length for very large buffers. crc32() takes
length as an unsigned int, which may be narrower than Py_ssize_t. */
while (len > (size_t) UINT_MAX) {
crc32val = crc32(crc32val, buf, UINT_MAX);
buf += (size_t) UINT_MAX;
len -= (size_t) UINT_MAX;
}
signed_val = crc32(crc32val, buf, len);
Py_END_ALLOW_THREADS
} else {
signed_val = crc32(crc32val, pbuf.buf, pbuf.len);