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The fix also adds support for POSTing to an https URL
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means that building a nonthreaded PythonCore will now require massaging of the .exp.
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of the current mac webservers.
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pointer to his W documentation.
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added 'abspath()' and 'extend()'.
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exceptions better.
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errors in the setup script or on the command line, so shouldn't result
in a traceback.
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'make_archive()' to a global static dictionary, ARCHIVE_FORMATS.
Added 'check_archive_formats()', which obviously makes good use of
this dictionary.
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and the other "composite meta-data" methods.
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after each test has been run. This avoids excessive memory growth
during the tests.
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* Base address for all extension modules updated. PC\dllbase_nt.txt
also updated. Erroneous "libpath" directory removed for all
projects.
* winsound module moved from a builtin module to an extension
module. This was done primarily to avoid Python16.dll needing to
pull in winmm.dll. Really dumb test added for winsound - but if
nothing else it ensures the module imports.
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* Temp directory for all projects are now specific to the project
(rather than common as before). This avoids any conflicts with
debug symbols or common file names etc.
NOTE: You should manually delete your existing build directory after
applying this patch, as the MSVC "clean" command will now only clean
the new temporary directories - not the existing common temp
directory.
* Base address for all extension modules updated. PC\dllbase_nt.txt
also updated. Erroneous "libpath" directory removed for all
projects.
* winsound module moved from a builtin module to an extension
module. This was done primarily to avoid Python16.dll needing to
pull in winmm.dll. Really dumb test added for winsound - but if
nothing else it ensures the module imports.
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"""
Running "test_extcall" repeatedly results in memory leaks.
One of these can't be fixed (at least not easily!), it happens since
this code:
def saboteur(**kw):
kw['x'] = locals()
d = {}
saboteur(a=1, **d)
creates a circular reference - d['x']['d']==d
The others are due to some missing decrefs in ceval.c, fixed by the
patch attached below.
Note: I originally wrote this without the "goto", just adding the
missing decref's where needed. But I think the goto is justified in
keeping the executable code size of ceval as small as possible.
"""
[I think the circular reference is more like kw['x']['kw'] == kw. --GvR]
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_PyTuple_Resize(). In addition, a change suggested by Jeremy Hylton
to limit the size of the free lists is also merged into this patch.
Charles wrote initially:
"""
Test Case: run the following code:
class Nothing:
def __len__(self):
return 5
def __getitem__(self, i):
if i < 3:
return i
else:
raise IndexError, i
def g(a,*b,**c):
return
for x in xrange(1000000):
g(*Nothing())
and watch Python's memory use go up and up.
Diagnosis:
The analysis begins with the call to PySequence_Tuple at line 1641 in
ceval.c - the argument to g is seen to be a sequence but not a tuple,
so it needs to be converted from an abstract sequence to a concrete
tuple. PySequence_Tuple starts off by creating a new tuple of length
5 (line 1122 in abstract.c). Then at line 1149, since only 3 elements
were assigned, _PyTuple_Resize is called to make the 5-tuple into a
3-tuple. When we're all done the 3-tuple is decrefed, but rather than
being freed it is placed on the free_tuples cache.
The basic problem is that the 3-tuples are being added to the cache
but never picked up again, since _PyTuple_Resize doesn't make use of
the free_tuples cache. If you are resizing a 5-tuple to a 3-tuple and
there is already a 3-tuple in free_tuples[3], instead of using this
tuple, _PyTuple_Resize will realloc the 5-tuple to a 3-tuple. It
would more efficient to use the existing 3-tuple and cache the
5-tuple.
By making _PyTuple_Resize aware of the free_tuples (just as
PyTuple_New), we not only save a few calls to realloc, but also
prevent this misbehavior whereby tuples are being added to the
free_tuples list but never properly "recycled".
"""
And later:
"""
This patch replaces my submission of Sun, 16 Apr and addresses Jeremy
Hylton's suggestions that we also limit the size of the free tuple
list. I chose 2000 as the maximum number of tuples of any particular
size to save.
There was also a problem with the previous version of this patch
causing a core dump if Python was built with Py_TRACE_REFS. This is
fixed in the below version of the patch, which uses tupledealloc
instead of _Py_Dealloc.
"""
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"""
In the course of debugging this I also saw that cPickle is
inconsistent with pickle - if you attempt a pickle.load or pickle.dump
on a closed file, you get a ValueError, whereas the corresponding
cPickle operations give an IOError. Since cPickle is advertised as
being compatible with pickle, I changed these exceptions to match.
"""
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"""
Problem description:
Run the following script:
import test.test_cpickle
for x in xrange(1000000):
reload(test.test_cpickle)
Watch Python's memory use go up up and away!
In the course of debugging this I also saw that cPickle is
inconsistent with pickle - if you attempt a pickle.load or pickle.dump
on a closed file, you get a ValueError, whereas the corresponding
cPickle operations give an IOError. Since cPickle is advertised as
being compatible with pickle, I changed these exceptions to match.
"""
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Windows), soclose (on OS2), or to close (everywhere else).
Hopefully this fixes a new compilation error that I suddenly get on
Windows because the macro definition for close -> closesocket
apparently was done before including io.h, which contains a prototype
for close. (No idea why this wasn't an error before.)
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backslash from the pathname argument to stat() on Windows -- while on
Unix, stat("/bin/") succeeds and does the same thing as stat("/bin"),
on Windows, stat("\\windows\\") fails while stat("\\windows") succeeds.
This modified version of the patch recognizes both / and \.
(This is odd behavior of the MS C library, since
os.listdir("\\windows\\") succeeds!)
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object, rather than through the distribution itself (since I moved the meta-
data out to a DistributionMetadata instance).
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manifest template.
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for all commands except 'prune' and 'graft'.
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and now actually works.
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to add the "display metadata" options: --name, --version, --author,
and so forth. Main changes:
* added 'display_options' class attribute to list all the "display only"
options (--help-commands plus the metadata options)
* added DistributionMetadata class as a place to put the actual
metadata information from the setup script (not to be confused with
the metadata display options); the logic dealing with metadata
(eg. return self.name or "UNKNOWN") is now in this class
* changed 'parse_command_line()' to use the new OO interface provided
by fancy_getopt, mainly so we can get at the original order of
options on the command line, so we can print multiple lines of
distribution meta-data in the order specified by the user
* added 'handle_display_options()' to handle display-only options
Also fixed some crufty old comments/docstrings.
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Added 'set_option_table()' method.
Added missing 'self' to 'get_option_order()'.
Cosmetic/comment/docstring tweaks.
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leaving in its place a tiny wrapper around the FancyGetopt class
for backwards compatibility.
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class. (Mainly this was to support the ability to go back after the
getopt operation is done and get extra information about the parse,
in particular the original order of options seen on the command line.
But it's a big improvement and should make it a lot easier to add
functionality in the future.)
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Reformatted wide paragraphs.
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'\textbackslash'.
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option.
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(4-space indents already used.)
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