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293 Commits

Author SHA1 Message Date
Raymond Hettinger fa78806041
Removed unnecesssary bit inversion which doesn't improve dispersion statistics (#5235) 2018-01-18 13:23:27 -08:00
Raymond Hettinger b44c5169f6
bpo-26163: Frozenset hash improvement (#5194) 2018-01-16 01:30:26 -08:00
Raymond Hettinger 3329992e31
bpo-29476: Simplify set_add_entry() (#5175) 2018-01-14 10:20:13 -08:00
Serhiy Storchaka 13ad3b7a82 bpo-31462: Remove trailing whitespaces. (#3564) 2017-09-14 09:38:36 +03:00
Eric Snow 2ebc5ce42a bpo-30860: Consolidate stateful runtime globals. (#3397) 
* group the (stateful) runtime globals into various topical structs
* consolidate the topical structs under a single top-level _PyRuntimeState struct
* add a check-c-globals.py script that helps identify runtime globals

Other globals are excluded (see globals.txt and check-c-globals.py).
 2017-09-07 23:51:28 -06:00
Eric Snow 05351c1bd8 Revert "bpo-30860: Consolidate stateful runtime globals." (#3379) 
Windows buildbots started failing due to include-related errors.
 2017-09-05 21:43:08 -07:00
Eric Snow 76d5abc868 bpo-30860: Consolidate stateful runtime globals. (#2594) 
* group the (stateful) runtime globals into various topical structs
* consolidate the topical structs under a single top-level _PyRuntimeState struct
* add a check-c-globals.py script that helps identify runtime globals

Other globals are excluded (see globals.txt and check-c-globals.py).
 2017-09-05 18:26:16 -07:00
Raymond Hettinger 64263dfd18 Fix terminology in comment and add more design rationale. (#3335) 
* Fix terminology in comment and add more design rationale.

* Fix extra space
 2017-09-04 18:54:16 -07:00
INADA Naoki a6296d34a4 bpo-31095: fix potential crash during GC (GH-2974) 2017-08-24 14:55:17 +09:00
Serhiy Storchaka 6cca5c8459 bpo-30592: Fixed error messages for some builtins. (#1996) 
Error messages when pass keyword arguments to some builtins that
don't support keyword arguments contained double parenthesis: "()()".
The regression was introduced by bpo-30534.
 2017-06-08 14:41:19 +03:00
Serhiy Storchaka bf623ae884 bpo-30061: Check if PyObject_Size()/PySequence_Size()/PyMapping_Size() (#1096) 
raised an error.

Replace them with using concrete types API that never fails if appropriate.
 2017-04-19 20:03:52 +03:00
INADA Naoki e82cf8675b bpo-29949: Fix set memory usage regression (GH-943) 
Revert "Minor factoring:  move redundant resize scaling logic into the resize function."

This reverts commit 4897300276.
 2017-04-01 17:20:25 +09:00
Serhiy Storchaka 68a001dd59 Issue #29460: _PyArg_NoKeywords(), _PyArg_NoStackKeywords() and 
_PyArg_NoPositional() now are macros.
 2017-02-06 10:41:46 +02:00
Raymond Hettinger 5cd87a8d61 Reduce load factor (from 66% to 60%) to improve effectiveness of linear probing. 
Decreased density gives better collision statistics (average of 2.5 probes in a
full table versus 3.0 previously) and fewer occurences of starting a second
possibly overlapping sequence of 10 linear probes.  Makes resizes a little more
frequent but each with less work (fewer insertions and fewer collisions).
 2017-02-04 02:43:42 -08:00
Raymond Hettinger e1af6964b4 Remove unnecessary variables. 
* so->used never gets changed during a resize
* so->filled only changes when dummies are present and being eliminated
 2017-02-02 08:24:48 -08:00
Serhiy Storchaka 5ab81d787f Issue #28959: Added private macro PyDict_GET_SIZE for retrieving the size of dict. 2016-12-16 16:18:57 +02:00
Serhiy Storchaka 85b0f5beb1 Added the const qualifier to char* variables that refer to readonly internal 
UTF-8 represenatation of Unicode objects.
 2016-11-20 10:16:47 +02:00
Serhiy Storchaka 06515833fe Replaced outdated macros _PyUnicode_AsString and _PyUnicode_AsStringAndSize 
with PyUnicode_AsUTF8 and PyUnicode_AsUTF8AndSize.
 2016-11-20 09:13:07 +02:00
Raymond Hettinger 4103e4dfbc Issue #28071: Add early-out for differencing from an empty set. 2016-09-11 22:02:28 -07:00
Raymond Hettinger 8421d714d0 Removed unused initialization and the uninteresting comment. 2016-04-29 01:37:05 -07:00
Serhiy Storchaka fa070298e9 Issue #26880: Removed redundant checks in set.__init__. 2016-04-29 11:31:52 +03:00
Serhiy Storchaka ab479c49d3 Issue #26494: Fixed crash on iterating exhausting iterators. 
Affected classes are generic sequence iterators, iterators of str, bytes,
bytearray, list, tuple, set, frozenset, dict, OrderedDict, corresponding
views and os.scandir() iterator.
 2016-03-30 20:41:15 +03:00
Serhiy Storchaka fbb1c5ee06 Issue #26494: Fixed crash on iterating exhausting iterators. 
Affected classes are generic sequence iterators, iterators of str, bytes,
bytearray, list, tuple, set, frozenset, dict, OrderedDict, corresponding
views and os.scandir() iterator.
 2016-03-30 20:40:02 +03:00
Raymond Hettinger 3625af5f21 Moved misplaced functions to the section for C API functions. 2016-03-27 01:15:07 -07:00
Raymond Hettinger 2c257ab0f8 Responsibility for argument checking belongs in set.__init__() rather than set.__new__(). 
See dict.__new__() and list.__new__() for comparison.  Neither of those examine or touch
args or kwds.  That work is done in the __init__() methods.
 2016-03-26 04:10:11 -07:00
Raymond Hettinger b72e21b9ab Speed-up construction of empty sets by approx 12-14%. 2016-03-25 02:29:59 -07:00
Raymond Hettinger f50215412c Add early-out for the common case where kwds is NULL (gives 1.1% speedup). 2016-02-04 02:46:16 -08:00
Benjamin Peterson 3e47a1337c merge 3.5 2016-01-01 11:56:35 -06:00
Benjamin Peterson 4e3dd51396 merge 3.4 2016-01-01 11:56:16 -06:00
Benjamin Peterson 630329e4ea merge 3.3 2016-01-01 11:55:47 -06:00
Benjamin Peterson 0e617e22f0 remove some copyright notices supserseded by the toplevel ones 2016-01-01 11:53:47 -06:00
Serhiy Storchaka a9406e77fa Issue #25421: __sizeof__ methods of builtin types now use dynamic basic size. 
This allows sys.getsize() to work correctly with their subclasses with
__slots__ defined.
 2015-12-19 20:07:11 +02:00
Serhiy Storchaka 5c4064e8bd Issue #25421: __sizeof__ methods of builtin types now use dynamic basic size. 
This allows sys.getsize() to work correctly with their subclasses with
__slots__ defined.
 2015-12-19 20:05:25 +02:00
Raymond Hettinger e4495877dd Minor tweek. Counting down rather than up reduces register pressure. 2015-12-15 00:42:30 -08:00
Raymond Hettinger 86d322f020 Undo inadvertent line swap 2015-12-13 19:27:17 -08:00
Raymond Hettinger 5088f6005f Hoist constant expressions (so->table and so->mask) out of the inner-loop. 2015-12-13 18:45:01 -08:00
Raymond Hettinger 66f6238fca Add assertion to verify the pre-condition in the comments. 2015-11-17 20:58:43 -08:00
Raymond Hettinger 6019c8ced0 Issue #25629: Move set fill/used updates out of inner loop 2015-11-17 08:28:07 -08:00
Raymond Hettinger 4148195c45 Move the active entry multiplication to later in the hash calculation 2015-08-07 00:43:39 -07:00
Raymond Hettinger b501a27ad8 Restore frozenset hash caching removed in cf707dd190a9 2015-08-06 22:15:22 -07:00
Raymond Hettinger a286a51ae1 Fix comment typo 2015-08-01 11:07:11 -07:00
Raymond Hettinger 36c0500990 Tweak the comments 2015-08-01 10:57:42 -07:00
Raymond Hettinger fbffdef47d Issue #24762: Speed-up frozenset_hash() and greatly beef-up the comments. 2015-08-01 09:53:00 -07:00
Raymond Hettinger daffc916aa Issue #24681: Move the most likely test first in set_add_entry(). 2015-07-31 07:58:56 -07:00
Raymond Hettinger 70559b5c20 Issue #24681: Move the store of so->table to the code block where it is used. 2015-07-23 07:42:23 -04:00
Raymond Hettinger ff9e18a863 Issue #24583: Consolidate previous set object updates into a single function 
with a single entry point, named exit points at the bottom, more self-evident
refcount adjustments, and a comment describing why the pre-increment was
necessary at all.
 2015-07-20 07:34:05 -04:00
Raymond Hettinger 482c05cbb5 Issue #24583: Fix refcount leak. 2015-07-20 01:23:32 -04:00
Raymond Hettinger 061091a7c5 Issue #24583: Fix crash when set is mutated while being updated. 2015-07-15 23:54:02 -07:00
Raymond Hettinger d702044bcd merge 2015-07-15 23:52:29 -07:00
Raymond Hettinger a3626bc5bd Issue #24583: Fix crash when set is mutated while being updated. 2015-07-15 23:50:14 -07:00