svn+ssh://pythondev@svn.python.org/python/trunk
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r63977 | thomas.heller | 2008-06-06 10:33:46 +0200 (Fri, 06 Jun 2008) | 31 lines
Issue #1798: Add ctypes calling convention that allows safe access of errno.
ctypes maintains thread-local storage that has space for two error
numbers: private copies of the system 'errno' value and, on Windows,
the system error code accessed by the GetLastError() and
SetLastError() api functions.
Foreign functions created with CDLL(..., use_errno=True), when called,
swap the system 'errno' value with the private copy just before the
actual function call, and swapped again immediately afterwards. The
'use_errno' parameter defaults to False, in this case 'ctypes_errno'
is not touched.
On Windows, foreign functions created with CDLL(...,
use_last_error=True) or WinDLL(..., use_last_error=True) swap the
system LastError value with the ctypes private copy.
The values are also swapped immeditately before and after ctypes
callback functions are called, if the callbacks are constructed using
the new optional use_errno parameter set to True: CFUNCTYPE(...,
use_errno=TRUE) or WINFUNCTYPE(..., use_errno=True).
New ctypes functions are provided to access the ctypes private copies
from Python:
- ctypes.set_errno(value) and ctypes.set_last_error(value) store
'value' in the private copy and returns the previous value.
- ctypes.get_errno() and ctypes.get_last_error() returns the current
ctypes private copies value.
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r63942 | thomas.heller | 2008-06-04 20:59:03 +0200 (Wed, 04 Jun 2008) | 42 lines
Issue #1798: Add ctypes calling convention that allows safe access to
errno (and LastError, on Windows).
ctypes maintains a module-global, but thread-local, variable that
contains an error number; called 'ctypes_errno' for this discussion.
This variable is a private copy of the systems 'errno' value; the copy
is swapped with the 'errno' variable on several occasions.
Foreign functions created with CDLL(..., use_errno=True), when called,
swap the values just before the actual function call, and swapped
again immediately afterwards. The 'use_errno' parameter defaults to
False, in this case 'ctypes_errno' is not touched.
The values are also swapped immeditately before and after ctypes
callback functions are called, if the callbacks are constructed using
the new optional use_errno parameter set to True: CFUNCTYPE(..., use_errno=TRUE)
or WINFUNCTYPE(..., use_errno=True).
Two new ctypes functions are provided to access the 'ctypes_errno'
value from Python:
- ctypes.set_errno(value) sets ctypes_errno to 'value', the previous
ctypes_errno value is returned.
- ctypes.get_errno() returns the current ctypes_errno value.
---
On Windows, the same scheme is implemented for the error value which
is managed by the GetLastError() and SetLastError() windows api calls.
The ctypes functions are 'ctypes.set_last_error(value)' and
'ctypes.get_last_error()', the CDLL and WinDLL optional parameter is
named 'use_last_error', defaults to False.
---
On Windows, TlsSetValue and TlsGetValue calls are used to provide
thread local storage for the variables; ctypes compiled with __GNUC__
uses __thread variables.
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r63943 | thomas.heller | 2008-06-04 21:19:00 +0200 (Wed, 04 Jun 2008) | 1 line
Fix ctypes.set_errno for gcc.
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r63945 | thomas.heller | 2008-06-04 22:22:05 +0200 (Wed, 04 Jun 2008) | 7 lines
Revert revisions 63943 and 63942 (Issue #1798: Add ctypes calling
convention that allows safe access to errno)
This code does not yet work on OS X (__thread storage specifier not
available), so i needs a configure check plus a more portable
solution.
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svn+ssh://pythondev@svn.python.org/python/trunk
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r63897 | thomas.heller | 2008-06-02 20:41:30 +0200 (Mon, 02 Jun 2008) | 1 line
Fix misspelled sys.platform name and misspelled filename.
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r63898 | thomas.heller | 2008-06-02 22:07:46 +0200 (Mon, 02 Jun 2008) | 1 line
Fix the -x flag so that is does work.
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r63899 | walter.doerwald | 2008-06-02 22:36:03 +0200 (Mon, 02 Jun 2008) | 3 lines
Change all functions that expect one unicode character to accept a pair of
surrogates in narrow builds. Fixes issue #1706460.
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svn+ssh://pythondev@svn.python.org/python/trunk
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r63625 | martin.v.loewis | 2008-05-25 13:56:23 +0200 (So, 25 Mai 2008) | 1 line
Include all licenses of the packages that we include.
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r63638 | martin.v.loewis | 2008-05-25 18:37:34 +0200 (So, 25 Mai 2008) | 1 line
Create grammar pickle files on installation; remove them on uninstallation.
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svn+ssh://pythondev@svn.python.org/python/trunk
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r63871 | georg.brandl | 2008-06-01 22:33:55 +0200 (Sun, 01 Jun 2008) | 3 lines
Generate pydoc's topic help from the reST docs via Sphinx'
new text writer.
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arguments. This gives about 30% speed improvement for the simplest
(but most common) cases. This patch skips the __format__ dispatch, and
also avoids creating an object to hold the format_spec.
Unfortunately, backporting this to 2.6 is going to be more challenging
due to str/unicode issues with format_spec. I'll work on that next.
Then I'll spend some time profiling and see what that tells me.
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r63814 | eric.smith | 2008-05-30 14:10:04 -0400 (Fri, 30 May 2008) | 1 line
Refactor and clean up str.format() code (and helpers) in advance of optimizations.
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Robert Schuppenies
Georg Brandl
Thomas Heller
Benjamin Peterson
Alexandre Vassalotti
Martin v. Löwis
Walter Dörwald
Eric Smith
Mark Summerfield