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| author | Antoine Pitrou <solipsis@pitrou.net> | 2013-04-24 21:31:38 (GMT) |
|---|---|---|
| committer | Antoine Pitrou <solipsis@pitrou.net> | 2013-04-24 21:31:38 (GMT) |
| commit | e1a1674e1ed954c82cf1c88f3392baf4fd86ecdc (patch) | |
| tree | ab92fc3631b27dba0a3a23bedd06148a4dcb174d /Lib/test/support.py | |
| parent | 6ae466732c6a5cd988d02110ab0538c7752a3253 (diff) | |
| download | cpython-e1a1674e1ed954c82cf1c88f3392baf4fd86ecdc.zip cpython-e1a1674e1ed954c82cf1c88f3392baf4fd86ecdc.tar.gz cpython-e1a1674e1ed954c82cf1c88f3392baf4fd86ecdc.tar.bz2 | |
Issue #17835: Fix test_io when the default OS pipe buffer size is larger than one million bytes.
Diffstat (limited to 'Lib/test/support.py')
| -rw-r--r-- | Lib/test/support.py | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/Lib/test/support.py b/Lib/test/support.py index f2c3434..bc5176a 100644 --- a/Lib/test/support.py +++ b/Lib/test/support.py @@ -573,10 +573,12 @@ def _is_ipv6_enabled(): IPV6_ENABLED = _is_ipv6_enabled() -# A constant likely larger than the underlying OS pipe buffer size. -# Windows limit seems to be around 512B, and many Unix kernels have a 64K pipe -# buffer size or 16*PAGE_SIZE: take a few megs to be sure. This -PIPE_MAX_SIZE = 3 * 1000 * 1000 +# A constant likely larger than the underlying OS pipe buffer size, to +# make writes blocking. +# Windows limit seems to be around 512 B, and many Unix kernels have a +# 64 KiB pipe buffer size or 16 * PAGE_SIZE: take a few megs to be sure. +# (see issue #17835 for a discussion of this number). +PIPE_MAX_SIZE = 4 *1024 * 1024 + 1 # decorator for skipping tests on non-IEEE 754 platforms |