Commit Graph

395 Commits

Author SHA1 Message Date
Raymond Hettinger 8f8839e10a Remove the freelist scheme for setobjects.
The setobject freelist was consuming memory but not providing much value.
Even when a freelisted setobject was available, most of the setobject
fields still needed to be initialized and the small table still required
a memset().  This meant that the custom freelisting scheme for sets was
providing almost no incremental benefit over the default Python freelist
scheme used by _PyObject_Malloc() in Objects/obmalloc.c.
2013-09-07 20:26:50 -07:00
Victor Stinner 33824f6fd7 Restore changeset 5bd9db528aed (issue #18408)
"Issue #18408: PyObject_Str(), PyObject_Repr() and type_call() now fail with an
assertion error if they are called with an exception set (PyErr_Occurred()).

As PyEval_EvalFrameEx(), they may clear the current exception and so the caller
looses its exception."
2013-08-26 14:05:19 +02:00
Victor Stinner e51321020c Issue #18408: _PyObject_Dump() now saves/restores the current exception
So it can be called even if an exception was raised
2013-08-26 13:49:06 +02:00
Antoine Pitrou 9d95254bb7 Issue #18772: fix the gdb plugin after the set implementation changes 2013-08-24 21:07:07 +02:00
Antoine Pitrou 91541931f5 Back out 5bd9db528aed (issue #18408). It caused unsolved buildbot failures. 2013-08-23 23:18:20 +02:00
Antoine Pitrou 9ed5f27266 Issue #18722: Remove uses of the "register" keyword in C code. 2013-08-13 20:18:52 +02:00
Antoine Pitrou 796564c27b Issue #18112: PEP 442 implementation (safe object finalization). 2013-07-30 19:59:21 +02:00
Victor Stinner 8e47832737 Issue #18408: PyObject_Str(), PyObject_Repr() and type_call() now fail with an
assertion error if they are called with an exception set (PyErr_Occurred()).

As PyEval_EvalFrameEx(), they may clear the current exception and so the caller
looses its exception.
2013-07-18 01:49:30 +02:00
Victor Stinner e901d1fbdf Issue #18408: Fix Py_ReprEnter(), handle PyList_Append() failure 2013-07-17 21:58:41 +02:00
Victor Stinner 1b63493ed1 Issue #18408: Py_ReprLeave() now saves/restores the current exception,
and ignores exceptions raised during the call
2013-07-16 22:24:44 +02:00
Victor Stinner 0507bf56f0 Issue #3329: Implement the PEP 445
Add new enum:

* PyMemAllocatorDomain

Add new structures:

* PyMemAllocator
* PyObjectArenaAllocator

Add new functions:

* PyMem_RawMalloc(), PyMem_RawRealloc(), PyMem_RawFree()
* PyMem_GetAllocator(), PyMem_SetAllocator()
* PyObject_GetArenaAllocator(), PyObject_SetArenaAllocator()
* PyMem_SetupDebugHooks()

Changes:

* PyMem_Malloc()/PyObject_Realloc() now always call malloc()/realloc(), instead
  of calling PyObject_Malloc()/PyObject_Realloc() in debug mode.
* PyObject_Malloc()/PyObject_Realloc() now falls back to
  PyMem_Malloc()/PyMem_Realloc() for allocations larger than 512 bytes.
* Redesign debug checks on memory block allocators as hooks, instead of using C
  macros
2013-07-07 02:05:46 +02:00
Victor Stinner 36f01ad9ac Revert changeset 6661a8154eb3: Issue #3329: Add new APIs to customize memory allocators
The new API require more discussion.
2013-06-15 03:37:01 +02:00
Victor Stinner 4d7056258b Issue #3329: Add new APIs to customize memory allocators
* Add a new PyMemAllocators structure
* New functions:

  - PyMem_RawMalloc(), PyMem_RawRealloc(), PyMem_RawFree(): GIL-free memory
    allocator functions
  - PyMem_GetRawAllocators(), PyMem_SetRawAllocators()
  - PyMem_GetAllocators(), PyMem_SetAllocators()
  - PyMem_SetupDebugHooks()
  - _PyObject_GetArenaAllocators(), _PyObject_SetArenaAllocators()

* Add unit test for PyMem_Malloc(0) and PyObject_Malloc(0)
* Add unit test for new get/set allocators functions
* PyObject_Malloc() now falls back on PyMem_Malloc() instead of malloc() if
  size is bigger than SMALL_REQUEST_THRESHOLD, and PyObject_Realloc() falls
  back on PyMem_Realloc() instead of realloc()
* PyMem_Malloc() and PyMem_Realloc() now always call malloc() and realloc(),
  instead of calling PyObject_Malloc() and PyObject_Realloc() in debug mode
2013-06-15 00:37:46 +02:00
Victor Stinner af03757d20 Optimize ascii(str): don't encode/decode repr if repr is already ASCII 2013-04-14 18:44:10 +02:00
Benjamin Peterson 42124a727d initialize map/filter/zip in _PyBuiltin_Init rather than the catch-all function 2012-10-30 23:41:54 -04:00
Benjamin Peterson 7ff2094bc7 merge 3.3 (#16369) 2012-10-30 23:31:12 -04:00
Benjamin Peterson e8ea97fffb merge 3.2 (#16369) 2012-10-30 23:27:52 -04:00
Benjamin Peterson c43112823b initialize more global type objects (closes #16369) 2012-10-30 23:21:10 -04:00
Armin Ronacher 226b1db0e2 Added notimplemented_dealloc for better error reporting 2012-10-06 14:28:58 +02:00
Antoine Pitrou 56cd62c04a Issue #13992: The trashcan mechanism is now thread-safe. This eliminates
sporadic crashes in multi-thread programs when several long deallocator
chains ran concurrently and involved subclasses of built-in container
types.

Because of this change, a couple extension modules compiled for 3.2.4
(those which use the trashcan mechanism, despite it being undocumented)
will not be loadable by 3.2.3 and earlier. However, extension modules
compiled for 3.2.3 and earlier will be loadable by 3.2.4.
2012-09-06 00:59:49 +02:00
Antoine Pitrou 2b0218a259 Issue #13992: The trashcan mechanism is now thread-safe. This eliminates
sporadic crashes in multi-thread programs when several long deallocator
chains ran concurrently and involved subclasses of built-in container
types.

Because of this change, a couple extension modules compiled for 3.2.4
(those which use the trashcan mechanism, despite it being undocumented)
will not be loadable by 3.2.3 and earlier. However, extension modules
compiled for 3.2.3 and earlier will be loadable by 3.2.4.
2012-09-06 00:59:49 +02:00
David Malcolm 49526f48fc Issue #14785: Add sys._debugmallocstats() to help debug low-level memory allocation issues 2012-06-22 14:55:41 -04:00
Barry Warsaw 409da157d7 Eric Snow's implementation of PEP 421.
Issue 14673: Add sys.implementation
2012-06-03 16:18:47 -04:00
Benjamin Peterson 7d95e40721 Implement PEP 412: Key-sharing dictionaries (closes #13903)
Patch from Mark Shannon.
2012-04-23 11:24:50 -04:00
Benjamin Peterson 64ed576de8 merge 3.2 (#14509) 2012-04-09 15:04:39 -04:00
Antoine Pitrou a701388de1 Rename _PyIter_GetBuiltin to _PyObject_GetBuiltin, and do not include it in the stable ABI. 2012-04-05 00:04:20 +02:00
Victor Stinner 59af08f545 Micro-optimize PyObject_GetAttrString()
w cannot be NULL so use Py_DECREF() instead of Py_XDECREF().
2012-03-22 02:09:08 +01:00
Benjamin Peterson 74529ad3f4 refactor and avoid warnings 2012-03-09 07:25:32 -08:00
Victor Stinner 2d01dc00bc Issue #14211: _PyObject_GenericSetAttrWithDict() keeps a strong reference to
the descriptor because it may be destroyed before being used, destroyed during
the update of the dict for example.
2012-03-09 00:44:13 +01:00
Stefan Krah 9a2d99e28a - Issue #10181: New memoryview implementation fixes multiple ownership
and lifetime issues of dynamically allocated Py_buffer members (#9990)
  as well as crashes (#8305, #7433). Many new features have been added
  (See whatsnew/3.3), and the documentation has been updated extensively.
  The ndarray test object from _testbuffer.c implements all aspects of
  PEP-3118, so further development towards the complete implementation
  of the PEP can proceed in a test-driven manner.

  Thanks to Nick Coghlan, Antoine Pitrou and Pauli Virtanen for review
  and many ideas.

- Issue #12834: Fix incorrect results of memoryview.tobytes() for
  non-contiguous arrays.

- Issue #5231: Introduce memoryview.cast() method that allows changing
  format and shape without making a copy of the underlying memory.
2012-02-25 12:24:21 +01:00
Benjamin Peterson d9a3591ed1 merge 3.2 2012-02-21 11:12:14 -05:00
Georg Brandl 2fb477c0f0 Merge 3.2: Issue #13703 plus some related test suite fixes. 2012-02-21 00:33:36 +01:00
Georg Brandl 09a7c72cad Merge from 3.1: Issue #13703: add a way to randomize the hash values of basic types (str, bytes, datetime)
in order to make algorithmic complexity attacks on (e.g.) web apps much more complicated.

The environment variable PYTHONHASHSEED and the new command line flag -R control this
behavior.
2012-02-20 21:31:46 +01:00
Georg Brandl 2daf6ae249 Issue #13703: add a way to randomize the hash values of basic types (str, bytes, datetime)
in order to make algorithmic complexity attacks on (e.g.) web apps much more complicated.

The environment variable PYTHONHASHSEED and the new command line flag -R control this
behavior.
2012-02-20 19:54:16 +01:00
Benjamin Peterson 8eb1269c34 add generic implementation of a __dict__ descriptor for C types 2012-02-19 19:59:10 -05:00
Benjamin Peterson ce79852077 use the static identifier api for looking up special methods
I had to move the static identifier code from unicodeobject.h to object.h in
order for this to work.
2012-01-22 11:24:29 -05:00
Gregory P. Smith f5b62a9b31 Consolidate the occurrances of the prime used as the multiplier when hashing. 2012-01-14 15:45:13 -08:00
Benjamin Peterson bfebb7b54a improve abstract property support (closes #11610)
Thanks to Darren Dale for patch.
2011-12-15 15:34:02 -05:00
Victor Stinner 0a54cf12a0 Fix PyObject_Repr(): don't call PyUnicode_READY() if res is NULL 2011-12-01 03:22:44 +01:00
Victor Stinner db88ae5d66 PyObject_Repr() ensures that the result is a ready Unicode string
And PyObject_Str() and PyObject_Repr() don't make strings ready in debug
mode to ensure that the caller makes the string ready before using it.
2011-12-01 02:15:00 +01:00
Antoine Pitrou ce4a9da705 Issue #13411: memoryview objects are now hashable when the underlying object is hashable. 2011-11-21 20:46:33 +01:00
Victor Stinner 4ead7c7be8 PyObject_Str() ensures that the result string is ready
and check the string consistency.

_PyUnicode_CheckConsistency() doesn't check the hash anymore. It should be
possible to call this function even if hash(str) was already called.
2011-11-20 19:48:36 +01:00
Martin v. Löwis d10759f6ed Make _PyUnicode_FromId return borrowed references.
http://mail.python.org/pipermail/python-dev/2011-November/114347.html
2011-11-07 13:00:05 +01:00
Martin v. Löwis afe55bba33 Add API for static strings, primarily good for identifiers.
Thanks to Konrad Schöbel and Jasper Schulz for helping with the mass-editing.
2011-10-09 10:38:36 +02:00
Martin v. Löwis d63a3b8beb Implement PEP 393. 2011-09-28 07:41:54 +02:00
Benjamin Peterson e35dc5110f merge 3.2 2011-09-01 16:33:56 -04:00
Benjamin Peterson eff61f6927 make sure to initialize the method wrapper type 2011-09-01 16:32:31 -04:00
Brian Curtin dfc80e3d97 Replace Py_NotImplemented returns with the macro form Py_RETURN_NOTIMPLEMENTED.
The macro was introduced in #12724.
2011-08-10 20:28:54 -05:00
Benjamin Peterson ecb3bd93ff merge 3.2 2011-07-29 22:44:51 -05:00
Benjamin Peterson 43a976e3d9 remove duplicated type ready 2011-07-29 22:44:42 -05:00