Commit Graph

530 Commits

Author SHA1 Message Date
Mark Dickinson 34398184eb Issue #7406: Fix some occurrences of potential signed overflow in int
arithmetic.
2009-12-02 17:33:41 +00:00
Mark Dickinson 504a151c82 Issue #6603: Fix --with-tsc build failures on x86-64 that resulted
from a gcc inline assembler peculiarity. (gcc's "A" constraint
apparently means 'rax or rdx' in 64-bit mode, not edx:eax
or rdx:rax as one might expect.)
2009-10-31 10:11:28 +00:00
Benjamin Peterson 4a3cf191f4 small optimization: avoid popping the current block until we have to 2009-07-01 23:45:19 +00:00
Benjamin Peterson 8f7b94eae9 use stack macros 2009-06-28 16:14:07 +00:00
Benjamin Peterson b8338ab92c add two generic macros for peeking and setting in the stack 2009-06-28 16:08:02 +00:00
Antoine Pitrou 46dbe27f7e Issue #5330: C functions called with keyword arguments were not reported by
the various profiling modules (profile, cProfile). Patch by Hagen Fürstenau.
2009-05-30 21:27:00 +00:00
Benjamin Peterson 1880d8b823 add a SETUP_WITH opcode
It speeds up the with statement and correctly looks up the special
methods involved.
2009-05-25 13:13:44 +00:00
Jeffrey Yasskin 655d835415 Issue #6042:
lnotab-based tracing is very complicated and isn't documented very well.  There
were at least 3 comment blocks purporting to document co_lnotab, and none did a
very good job. This patch unifies them into Objects/lnotab_notes.txt which
tries to completely capture the current state of affairs.

I also discovered that we've attached 2 layers of patches to the basic tracing
scheme. The first layer avoids jumping to instructions that don't start a line,
to avoid problems in if statements and while loops.  The second layer
discovered that jumps backward do need to trace at instructions that don't
start a line, so it added extra lnotab entries for 'while' and 'for' loops, and
added a special case for backward jumps within the same line. I replaced these
patches by just treating forward and backward jumps differently.
2009-05-23 23:23:01 +00:00
Jeffrey Yasskin f7f858d141 Issue 5954, PyFrame_GetLineNumber:
Most uses of PyCode_Addr2Line
(http://www.google.com/codesearch?q=PyCode_Addr2Line) are just trying to get
the line number of a specified frame, but there's no way to do that directly.
Forcing people to go through the code object makes them know more about the
guts of the interpreter than they should need.

The remaining uses of PyCode_Addr2Line seem to be getting the line from a
traceback (for example,
http://www.google.com/codesearch/p?hl=en#u_9_nDrchrw/pygame-1.7.1release/src/base.c&q=PyCode_Addr2Line),
which is replaced by the tb_lineno field.  So we may be able to deprecate
PyCode_Addr2Line entirely for external use.
2009-05-08 22:23:21 +00:00
Jeffrey Yasskin 68d6852006 Backport r69961 to trunk, replacing JUMP_IF_{TRUE,FALSE} with
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.
2009-02-28 19:03:21 +00:00
Collin Winter 8725dce2ae Issue 5176: special-case string formatting in BINARY_MODULO implementation. This shows a modest (1-3%) speed-up in templating systems, for example. 2009-02-20 19:30:41 +00:00
Mark Dickinson 9e58a37252 Silence 'arg may be used uninitialized in this function' warning from gcc. 2009-02-08 17:33:11 +00:00
Benjamin Peterson 78821ddf8c fix building the core with --disable-unicode
I changed some bytearray methods to use strings instead of unicode like bytes_repr
Also, bytearray.fromhex() can take strings as well as unicode
2009-01-25 17:15:10 +00:00
Benjamin Peterson e18ef194d9 allow unicode keyword arguments for the ** syntax #4978 2009-01-20 14:21:16 +00:00
Kristján Valur Jónsson 0e91938e58 Issue 4293: Make Py_AddPendingCall() thread safe 2009-01-09 20:31:26 +00:00
Antoine Pitrou d0c3515bc5 Issue #2183: Simplify and optimize bytecode for list comprehensions. 2008-12-17 00:38:28 +00:00
Amaury Forgeot d'Arc ad9b5992e3 #4559: When a context manager's __exit__() method returns an object whose
conversion to bool raises an exception, 'with' loses that exception.

Reviewed by Jeffrey Yasskin.
Already ported to 2.5, will port to 2.6 and 3.0
2008-12-10 23:22:49 +00:00
Jeffrey Yasskin 2d873bd68b Issue 4597: Fix several cases in EvalFrameEx where an exception could be
"raised" without setting x, err, or why to let the eval loop know.
2008-12-08 18:55:24 +00:00
Jeffrey Yasskin fd8a1ec486 Speed up Python (according to pybench and 2to3-on-itself) by 1-2% by caching
whether any thread has tracing turned on, which saves one load instruction in
the fast_next_opcode path in PyEval_EvalFrameEx().  See issue 4477.
2008-12-03 06:46:45 +00:00
Antoine Pitrou c2cc80c64e Raymond's patch for #1819: speedup function calls with named parameters
(35% faster according to pybench)
2008-07-25 22:13:52 +00:00
Jesse Noller 5e62ca4fea Apply patch for 874900: threading module can deadlock after fork 2008-07-16 20:03:47 +00:00
Raymond Hettinger afae11ea88 Update comment on prediction macros. 2008-07-05 02:11:55 +00:00
Georg Brandl aa76d77e2b Add a comment about incref'ing w. 2008-07-01 20:56:03 +00:00
Amaury Forgeot d'Arc bdd941fac3 #3242: fix a crash in "print", if sys.stdout is set to a custom object,
whose write() method installs another sys.stdout.

Will backport.
2008-07-01 20:38:04 +00:00
Gregory P. Smith dd96db63f6 This reverts r63675 based on the discussion in this thread:
http://mail.python.org/pipermail/python-dev/2008-June/079988.html

Python 2.6 should stick with PyString_* in its codebase.  The PyBytes_* names
in the spirit of 3.0 are available via a #define only.  See the email thread.
2008-06-09 04:58:54 +00:00
Christian Heimes 593daf545b Renamed PyString to PyBytes 2008-05-26 12:51:38 +00:00
Benjamin Peterson f19a7b90bd A little reformating of Py3k warnings 2008-04-27 18:40:21 +00:00
Benjamin Peterson 9f4f48114f Use PyErr_WarnPy3k throughout 2008-04-27 03:01:45 +00:00
Georg Brandl d5b635f196 Make Py3k warnings consistent w.r.t. punctuation; also respect the
EOL 80 limit and supply more alternatives in warning messages.
2008-03-25 08:29:14 +00:00
Guido van Rossum 504153d55b Issue #2341: Add a Py3k warning when raising an exception that doesn't
derive from BaseException.
2008-03-18 04:26:48 +00:00
Guido van Rossum 20bda581e3 Clean up the Py3k warnings for non-BaseException-subclasses a bit. We
now don't warn for some corner cases that deserve a warning, rather
than warning double or incorrectly for some other corner cases.
2008-03-18 03:15:05 +00:00
Guido van Rossum 04edb528ca - Issue #2371: Add a Py3k warning when catching an exception that
doesn't derive from BaseException.
2008-03-18 02:49:46 +00:00
Nick Coghlan 7af53be66f Speed up with statements by storing the __exit__ method on the stack instead of in a temp variable (bumps the magic number for pyc files) 2008-03-07 14:13:28 +00:00
Jeffrey Yasskin 9063a99042 compile.c always emits END_FINALLY after WITH_CLEANUP, so predict that in
ceval.c. This is worth about a .03-.04us speedup on a simple with block.
2008-03-03 01:27:03 +00:00
Neal Norwitz 8250fbeac6 Reduce buffer size since we do not need 1k 2008-01-27 17:12:15 +00:00
Guido van Rossum 1d9a9eaa89 Fix two crashers. 2008-01-23 20:19:01 +00:00
Christian Heimes e93237dfcc #1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT. Macros for b/w compatibility are available. 2007-12-19 02:37:44 +00:00
Raymond Hettinger fd7ed407d7 Give meaning to the oparg for BUILD_MAP: estimated size of the dictionary.
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.
2007-12-18 21:24:09 +00:00
Raymond Hettinger effde12f5f Speed-up dictionary constructor by about 10%.
New opcode, STORE_MAP saves the compiler from awkward stack manipulations
and specializes for dicts using PyDict_SetItem instead of PyObject_SetItem.

Old disassembly:
              0 BUILD_MAP                0
              3 DUP_TOP
              4 LOAD_CONST               1 (1)
              7 ROT_TWO
              8 LOAD_CONST               2 ('x')
             11 STORE_SUBSCR
             12 DUP_TOP
             13 LOAD_CONST               3 (2)
             16 ROT_TWO
             17 LOAD_CONST               4 ('y')
             20 STORE_SUBSCR

New disassembly:
              0 BUILD_MAP                0
              3 LOAD_CONST               1 (1)
              6 LOAD_CONST               2 ('x')
              9 STORE_MAP
             10 LOAD_CONST               3 (2)
             13 LOAD_CONST               4 ('y')
             16 STORE_MAP
2007-12-18 18:26:18 +00:00
Christian Heimes 52729ac856 Silence a warning about an unsed variable in debug builds 2007-12-14 02:33:57 +00:00
Georg Brandl 2d3953bd78 Fix typo. 2007-12-05 07:02:47 +00:00
Amaury Forgeot d'Arc 0d75f09177 Merge from py3k branch:
Correction for issue1265 (pdb bug with "with" statement).

When an unfinished generator-iterator is garbage collected, PyEval_EvalFrameEx
is called with a GeneratorExit exception set.  This leads to funny results
if the sys.settrace function itself makes use of generators.
A visible effect is that the settrace function is reset to None.
Another is that the eventual "finally" block of the generator is not called.

It is necessary to save/restore the exception around the call to the trace
function.

This happens a lot with py3k: isinstance() of an ABCMeta instance runs
    def __instancecheck__(cls, instance):
        """Override for isinstance(instance, cls)."""
        return any(cls.__subclasscheck__(c)
                   for c in {instance.__class__, type(instance)})
which lets an opened generator expression each time it returns True.

Backport candidate, even if the case is less frequent in 2.5.
2007-11-13 21:54:28 +00:00
Raymond Hettinger dc1d1ba9cf Add build option for faster loop execution. 2007-11-07 02:45:46 +00:00
Thomas Wouters e2176020f9 Try harder to stay within the 79-column limit. There's still two places that go (way) over, but those are harder to fix without suffering in readability. 2007-09-20 17:35:10 +00:00
Thomas Wouters ae406c6018 Whitespace cleanup. 2007-09-19 17:27:43 +00:00
Martin v. Löwis 6819210b9e PEP 3123: Provide forward compatibility with Python 3.0, while keeping
backwards compatibility. Add Py_Refcnt, Py_Type, Py_Size, and
PyVarObject_HEAD_INIT.
2007-07-21 06:55:02 +00:00
Georg Brandl 2134e754f2 Patch #1686487: you can now pass any mapping after '**' in function calls. 2007-05-21 20:34:16 +00:00
Georg Brandl bc1b5f1669 Remove an XXX that is unnecessary. 2007-05-11 09:41:37 +00:00
Kristján Valur Jónsson 2f2f57916c Fix a bug when using the __lltrace__ opcode tracer, and a problem sith signed chars in frameobject.c which can occur with opcodes > 127 2007-04-13 22:07:33 +00:00
Georg Brandl 5cb76c19ba Patch #1682205: a TypeError while unpacking an iterable is no longer
masked by a generic one with the message "unpack non-sequence".
2007-03-21 09:00:39 +00:00