Add function to list the currently loaded libraries to ctypes.util
The dllist() function calls platform-specific APIs in order to
list the runtime libraries loaded by Python and any imported modules.
On unsupported platforms the function may be missing.
Co-authored-by: Eryk Sun <eryksun@gmail.com>
Co-authored-by: Peter Bierma <zintensitydev@gmail.com>
Capturing exceptions into names can lead to reference cycles though the __traceback__ attribute of the exceptions in some obscure cases that have been reported previously and fixed individually. As these variables are not used anyway, we can remove the binding to reduce the chances of creating reference cycles.
See for example GH-13135
Replace os.popen() with subprocess.Popen. Based on patch by Victor Stinner.
If the "gcc", "cc" or "objdump" command is not available, the code was
supposed to raise an OSError exception. But there was a bug in the code. The
shell code returns the exit code 10 if the required command is missing, and the
code tries to check for the status 10. The problem is that os.popen() doesn't
return the exit code directly, but a status which should be processed by
os.WIFEXITED() and os.WEXITSTATUS(). In practice, the exception was never
raised. The OSError exception was not documented and ctypes.util.find_library()
is expected to return None if the library is not found.
This reverts most of revision 3092cf163eb4. The change worked on x86
architectures, but did not work on ARM, probably due to extra ABI flags in
the ldconfig output.
importlib.machinery that provide the suffix details for import.
The attributes were not put on imp so as to compartmentalize
everything importlib needs for setting up imports in
importlib.machinery.
This also led to an indirect deprecation of inspect.getmoduleinfo() as
it directly returned imp.get_suffix's returned tuple which no longer
makes sense.
* Use str.startswith(tuple): I didn't know this Python feature, Python rocks!
* Replace sometimes sys.platform.startswith('linux') with
sys.platform == 'linux'
* sys.platform doesn't contain the major version on Cygwin on Mac OS X
(it's just 'cygwin' and 'darwin')
- Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on
biarch systems. Try to rely on ldconfig only, without using objdump and gcc.
svn+ssh://pythondev@svn.python.org/python/trunk
........
r63395 | thomas.heller | 2008-05-16 22:06:31 +0200 (Fr, 16 Mai 2008) | 4 lines
Issue 1793: Add ctypes.util.find_msvcrt() function (on Windows).
........
r63396 | thomas.heller | 2008-05-16 22:19:07 +0200 (Fr, 16 Mai 2008) | 4 lines
Very simple test for ctypes.util.find_library on Windows.
........
r63511 | thomas.heller | 2008-05-20 21:53:47 +0200 (Di, 20 Mai 2008) | 6 lines
On HPUX, -fPIC must be used for linking. _ctypes now builds on HP-UX
IA64 and PA machines.
The ctypes unittests work fine on the IA64, but dump core in
test_qsort on the PA.
........
r63522 | thomas.heller | 2008-05-21 20:47:02 +0200 (Mi, 21 Mai 2008) | 2 lines
The -x <test1[,test2...]> flag allows to exclude tests.
........
r63523 | thomas.heller | 2008-05-21 21:47:44 +0200 (Mi, 21 Mai 2008) | 2 lines
Oops, get_tests may be called with 3 arguments.
........
I replaced sys.maxint with sys.maxsize in Lib/*.py. Does anybody see a problem with the change on Win 64bit platforms? Win 64's long is just 32bit but the sys.maxsize is now 2**63-1 on every 64bit platform.
Also added docs for sys.maxsize.
