POP_JUMP_IF_{TRUE,FALSE} and JUMP_IF_{TRUE,FALSE}_OR_POP. This avoids executing
a POP_TOP on each conditional and sometimes allows the peephole optimizer to
skip a JUMP_ABSOLUTE entirely. It speeds up list comprehensions significantly.
an existing .py counterpart, override the co_filename attributes of all
code objects if the original filename is obsolete (which can happen if the
file has been renamed, moved, or if it is accessed through different paths).
Patch by Ziga Seilnacht and Jean-Paul Calderone.
PyString_FromFormat which has an independent implementation, and uses "%zd".
This makes a difference on win64, where printf needs "%Id" to display
64bit values. For example, queue.__repr__ was incorrect.
Reviewed by Martin von Loewis.
catch_warnings(), and clean up the API.
While expanding the test suite, a bug was found where a warning about the
'line' argument to showwarning() was not letting functions with '*args' go
without a warning.
Closes issue 3602.
Code review by Benjamin Peterson.
exception afterwards (for a subsequent parameter), the user code will
not call PyBuffer_Release() and memory will leak.
Reviewed by Amaury Forgeot d'Arc.
match Python 2.5 speed despite the __instancecheck__ / __subclasscheck__
mechanism. In the process, fix a bug where isinstance() and issubclass(),
when given a tuple of classes as second argument, were looking up
__instancecheck__ / __subclasscheck__ on the tuple rather than on each
type object.
Reviewed by Benjamin Peterson and Raymond Hettinger.
* crashes on memory allocation failure found with failmalloc
* memory leaks found with valgrind
* compiler warnings in opt mode which would lead to invalid memory reads
* problem using wrong name in decimal module reported by pychecker
Update the valgrind suppressions file with new leaks that are small/one-time
leaks we don't care about (ie, they are too hard to fix).
TBR=barry
TESTED=./python -E -tt ./Lib/test/regrtest.py -uall (both debug and opt modes)
in opt mode:
valgrind -q --leak-check=yes --suppressions=Misc/valgrind-python.supp \
./python -E -tt ./Lib/test/regrtest.py -uall,-bsddb,-compiler \
-x test_logging test_ssl test_multiprocessing
valgrind -q --leak-check=yes --suppressions=Misc/valgrind-python.supp \
./python -E -tt ./Lib/test/regrtest.py test_multiprocessing
for i in `seq 1 4000` ; do
LD_PRELOAD=~/local/lib/libfailmalloc.so FAILMALLOC_INTERVAL=$i \
./python -c pass
done
At least some of these fixes should probably be backported to 2.5.
key list data structure in the thread startup path.
This change is a companion to r60148 which already successfully dealt with a
similar issue on thread shutdown.
In particular this loop has been observed happening from this call path:
#0 in find_key ()
#1 in PyThread_set_key_value ()
#2 in _PyGILState_NoteThreadState ()
#3 in PyThreadState_New ()
#4 in t_bootstrap ()
#5 in pthread_start_thread ()
I don't know how this happens but it does, *very* rarely. On more than
one hardware platform. I have not been able to reproduce it manually.
(A flaky mutex implementation on the system in question is one hypothesis).
As with r60148, the spinning we managed to observe in the wild was due to a
single list element pointing back upon itself.
bus errors or SystemError being raised. As a side effect of fixing this, a bad
DECREF that could be triggered when 'message' and 'category' were both None was
fixed.
Closes issue 3211. Thanks JP Calderone for the bug report.
Added checks for integer overflows, contributed by Google. Some are
only available if asserts are left in the code, in cases where they
can't be triggered from Python code.
This patch adds a new configure argument on OSX:
--with-universal-archs=[32-bit|64-bit|all]
When used with the --enable-universalsdk option this controls which
CPU architectures are includes in the framework. The default is 32-bit,
meaning i386 and ppc. The most useful alternative is 'all', which includes
all 4 CPU architectures supported by MacOS X (i386, ppc, x86_64 and ppc64).
This includes limited support for the Carbon bindings in 64-bit mode as well,
limited because (a) I haven't done extensive testing and (b) a large portion
of the Carbon API's aren't available in 64-bit mode anyway.
I've also duplicated a feature of Apple's build of python: setting the
environment variable 'ARCHFLAGS' controls the '-arch' flags used for building
extensions using distutils.
renamed Include/bytesobject.h to Include/bytearrayobject.h
renamed Include/stringobject.h to Include/bytesobject.h
added Include/stringobject.h with aliases
Adds 'n' as a format specifier for integers, to mirror the same
specifier which is already available for floats. 'n' is the same as
'd', but inserts the current locale-specific thousands grouping.
I added this as a stringlib function, but it's only used by str type,
not unicode. This is because of an implementation detail in
unicode.format(), which does its own str->unicode conversion. But the
unicode version will be needed in 3.0, and it may be needed by other
code eventually in 2.6 (maybe decimal?), so I left it as a stringlib
implementation. As long as the unicode version isn't instantiated,
there's no overhead for this.
warnings.showwarning() was being used. This broke pre-existing replacements for
the function since they didn't support the extra argument.
Closes issue 2705.
The patch also adds acosh, asinh, atanh, log1p and copysign to all platforms. Finally it fixes differences between platforms like different results or exceptions for edge cases. Have fun :)
'warnings' code in places where it was previously not possible (e.g., the
parser). It could also potentially lead to a speed-up in interpreter start-up
if the C version of the code (_warnings) is imported over the use of the
Python version in key places.
Closes issue #1631171.
-J and -X are now reserved for Jython and non-standard arguments (e.g. IronPython). I've added some extra comments to make sure the reservation don't get missed in the future.
Rather than sprinkle casts throughout the code, change Py_CHARMASK to
always cast it's result to an unsigned char. This should ensure we
do the right thing when accessing an array with the result.
The new PyParser_*Ex() functions are based on Neal's suggestion and initial patch. The new __future__ feature makes all '' and r'' unicode strings. b'' and br'' stay (byte) strings.
svn+ssh://pythondev@svn.python.org/python/branches/trunk-bytearray
........
r61750 | christian.heimes | 2008-03-22 20:47:44 +0100 (Sat, 22 Mar 2008) | 1 line
Copied files from py3k w/o modifications
........
r61752 | christian.heimes | 2008-03-22 20:53:20 +0100 (Sat, 22 Mar 2008) | 7 lines
Take One
* Added initialization code, warnings, flags etc. to the appropriate places
* Added new buffer interface to string type
* Modified tests
* Modified Makefile.pre.in to compile the new files
* Added bytesobject.c to Python.h
........
r61754 | christian.heimes | 2008-03-22 21:22:19 +0100 (Sat, 22 Mar 2008) | 2 lines
Disabled bytearray.extend for now since it causes an infinite recursion
Fixed serveral unit tests
........
r61756 | christian.heimes | 2008-03-22 21:43:38 +0100 (Sat, 22 Mar 2008) | 5 lines
Added PyBytes support to several places:
str + bytearray
ord(bytearray)
bytearray(str, encoding)
........
r61760 | christian.heimes | 2008-03-22 21:56:32 +0100 (Sat, 22 Mar 2008) | 1 line
Fixed more unit tests related to type('') is not unicode
........
r61763 | christian.heimes | 2008-03-22 22:20:28 +0100 (Sat, 22 Mar 2008) | 2 lines
Fixed more unit tests
Fixed bytearray.extend
........
r61768 | christian.heimes | 2008-03-22 22:40:50 +0100 (Sat, 22 Mar 2008) | 1 line
Implemented old buffer interface for bytearray
........
r61772 | christian.heimes | 2008-03-22 23:24:52 +0100 (Sat, 22 Mar 2008) | 1 line
Added backport of the io module
........
r61775 | christian.heimes | 2008-03-23 03:50:49 +0100 (Sun, 23 Mar 2008) | 1 line
Fix str assignement to bytearray. Assignment of a str of size 1 is interpreted as a single byte
........
r61805 | christian.heimes | 2008-03-23 19:33:48 +0100 (Sun, 23 Mar 2008) | 3 lines
Fixed more tests
Fixed bytearray() comparsion with unicode()
Fixed iterator assignment of bytearray
........
r61809 | christian.heimes | 2008-03-23 21:02:21 +0100 (Sun, 23 Mar 2008) | 2 lines
str(bytesarray()) now returns the bytes and not the representation of the bytearray object
Enabled and fixed more unit tests
........
r61812 | christian.heimes | 2008-03-23 21:53:08 +0100 (Sun, 23 Mar 2008) | 3 lines
Clear error PyNumber_AsSsize_t() fails
Use CHARMASK for ob_svall access
disabled a test with memoryview again
........
r61819 | christian.heimes | 2008-03-23 23:05:57 +0100 (Sun, 23 Mar 2008) | 1 line
Untested updates to the PCBuild directory
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r61917 | christian.heimes | 2008-03-26 00:57:06 +0100 (Wed, 26 Mar 2008) | 1 line
The type system of Python 2.6 has subtle differences to 3.0's. I've removed the Py_TPFLAGS_BASETYPE flags from bytearray for now. bytearray can't be subclasses until the issues with bytearray subclasses are fixed.
........
r61920 | christian.heimes | 2008-03-26 01:44:08 +0100 (Wed, 26 Mar 2008) | 2 lines
Disabled last failing test
I don't understand what the test is testing and how it suppose to work. Ka-Ping, please check it out.
........
r61930 | christian.heimes | 2008-03-26 12:46:18 +0100 (Wed, 26 Mar 2008) | 1 line
Re-enabled bytes warning code
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r61933 | christian.heimes | 2008-03-26 13:20:46 +0100 (Wed, 26 Mar 2008) | 1 line
Fixed a bug in the new buffer protocol. The buffer slots weren't copied into a subclass.
........
r61934 | christian.heimes | 2008-03-26 13:25:09 +0100 (Wed, 26 Mar 2008) | 1 line
Re-enabled bytearray subclassing - all tests are passing.
........
This work is substantially Anthony Baxter's, from issue
1633807. I just freshened it, made a few minor tweaks,
and added the test cases. I also created issue 2412,
which is to check for 2to3's behavior with the print
function. I also added myself to ACKS.
Added 0b and 0o literals to tokenizer.
Modified PyOS_strtoul to support 0b and 0o inputs.
Modified PyLong_FromString to support guessing 0b and 0o inputs.
Renamed test_hexoct.py to test_int_literal.py and added binary tests.
Added upper and lower case 0b, 0O, and 0X tests to test_int_literal.py
Added "Z" format_char to PyOS_ascii_formatd to support empty float presentation type.
Renamed buf_size in PyOS_ascii_formatd to more accurately reflect it's meaning.
Modified format.__float__ to use the new "Z" format as the default.
Added test cases.
assert (0, 'message')
An empty tuple does not create a warning. While questionable usage:
assert (), 'message'
should not display a warning. Tested manually.
The warning message could be improved. Feel free to update it.
would give bogus error messages, because of untested exceptions::
>>> f(**g(1=2))
XXX undetected error
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'int' object is not iterable
instead of the expected SyntaxError: keyword can't be an expression
Will backport.
My tests don't show the promised speed up of 10%. The code is as fast as the old code for simple cases and slightly faster for complex cases with several of args and kwargs. But the patch simplifies the code, too.
Highlights:
- Adding PyObject_Format.
- Adding string.Format class.
- Adding __format__ for str, unicode, int, long, float, datetime.
- Adding builtin format.
- Adding ''.format and u''.format.
- str/unicode fixups for formatters.
The files in Objects/stringlib that implement PEP 3101 (stringdefs.h,
unicodedefs.h, formatter.h, string_format.h) are identical in trunk
and py3k. Any changes from here on should be made to trunk, and
changes will propogate to py3k).
The mapping between bytecode offsets and source lines (lnotab) did not contain
an entry for the beginning of the loop.
Now it does, and the lnotab can be a bit larger:
in particular, several statements on the same line generate several entries.
However, this does not bother the settrace function, which will trigger only
one 'line' event.
The lnotab seems to be exactly the same as with python2.4.
I implemented the function sys._compact_freelists() and C API functions PyInt_/PyFloat_CompactFreeList() to compact the pre-allocated blocks of ints and floats. They allow the user to reduce the memory usage of a Python process that deals with lots of numbers.
The patch also renames sys._cleartypecache to sys._clear_type_cache
whole construct away, even when an 'else' clause is present::
while 0:
print("no")
else:
print("yes")
did not generate any code at all.
Now the compiler emits the 'else' block, like it already does for 'if' statements.
Will backport.
The "can't load dll" message box on Windows is suppressed while an extension is loaded by calling SetErrorMode in dynload_win.c. The error is still reported properly.
PyThreadState_Delete() to avoid an infinite loop when the tstate list
is messed up and has somehow becomes circular and does not contain the
current thread.
I don't know how this happens but it does, *very* rarely. On more than
one hardware platform. I have not been able to reproduce it manually.
Attaching to a process where its happening: it has always been in an
infinite loop over a single element tstate list that is not the tstate
we're looking to delete. It has been in t_bootstrap()'s call to
PyThreadState_DeleteCurrent() as a pthread is exiting.
local_ptr_assign_local: Assigning address of stack variable "namebuf" to pointer "filename"
out_of_scope: Variable "namebuf" goes out of scope
use_invalid: Used "filename" pointing to out-of-scope variable "namebuf"
round included:
* Revert round to its 2.6 behavior (half away from 0).
* Because round, floor, and ceil always return float again, it's no
longer necessary to have them delegate to __xxx___, so I've ripped
that out of their implementations and the Real ABC. This also helps
in implementing types that work in both 2.6 and 3.0: you return int
from the __xxx__ methods, and let it get enabled by the version
upgrade.
* Make pow(-1, .5) raise a ValueError again.
On Windows, when import fails to load a dll module, the message says
"error code 193" instead of a more informative text.
It turns out that FormatMessage needs additional parameters for some error codes.
For example: 193 means "%1 is not a valid Win32 application".
Since it is impossible to know which parameter to pass, we use
FORMAT_MESSAGE_IGNORE_INSERTS to get the raw message, which is still better
than the number.
the complex_pow part), r56649, r56652, r56715, r57296, r57302, r57359, r57361,
r57372, r57738, r57739, r58017, r58039, r58040, and r59390, and new
documentation. The only significant difference is that round(x) returns a float
to preserve backward-compatibility. See http://bugs.python.org/issue1689.
Allows dictionaries to be pre-sized (upto 255 elements) saving time lost
to re-sizes with their attendant mallocs and re-insertions.
Has zero effect on small dictionaries (5 elements or fewer), a slight
benefit for dicts upto 22 elements (because they had to resize once
anyway), and more benefit for dicts upto 255 elements (saving multiple
resizes during the build-up and reducing the number of collisions on
the first insertions). Beyond 255 elements, there is no addional benefit.
Added PyFloat_GetMax(), PyFloat_GetMin() and PyFloat_GetInfo() to the float API.
Added a dictionary sys.float_info with information about the internal floating point type to the sys module.
(in deallocation of running threads, for example), so the PyGILState_Release()
function must still be functional.
On the other hand, _PyGILState_Fini() only frees memory, and can be called later.
Backport candidate, but only after some experts comment on it.
Benjamin Peterson
Nick Coghlan
Brett Cannon
Jeffrey Yasskin
Collin Winter
Mark Dickinson
Eric Smith
Raymond Hettinger
Mark Hammond
Amaury Forgeot d'Arc
Martin v. Löwis
Kristján Valur Jónsson
Antoine Pitrou
Armin Ronacher
Christian Heimes
Andrew MacIntyre
Neal Norwitz
Gregory P. Smith
Georg Brandl
Jesse Noller
Robert Schuppenies
Ronald Oussoren
Andrew M. Kuchling
David Wolever
Travis E. Oliphant
Guido van Rossum
Barry Warsaw
Skip Montanaro