96c6af9b20
Issue #16991 : Add a C implementation of collections.OrderedDict.
2015-05-29 22:21:39 -06:00
1a6292194b
fix refleak in deque_concat
2015-04-04 10:52:36 -04:00
41290a68ba
Issue 23793: Add deque support for __add__(), __mul__(), and __imul__().
2015-03-31 08:12:23 -07:00
fef9c1b368
Fix typo
2015-03-24 21:12:57 -07:00
8dbbae2e52
Minor code and comment cleanups.
2015-03-24 21:01:50 -07:00
551350a79f
Improve and fix-up comments.
2015-03-24 00:19:53 -07:00
0f1451c8c0
Issue 23744: Minor speed-up for deque.__bool__().
2015-03-23 23:23:55 -07:00
6921c13bbb
Minor nit. Make the rotate() success/fail tests consistent.
2015-03-21 02:03:40 -07:00
ac13ad6a32
For safety, wait to decref deleted values until the deque state has been restored.
2015-03-21 01:53:16 -07:00
0f6f94778a
Fix minor formatting nits and remove unnecessary comment.
2015-03-21 01:42:10 -07:00
32ea16577d
Issue 23704: Add index(), copy(), and insert() to deques. Register deques as a MutableSequence.
2015-03-21 01:37:37 -07:00
39dadf7abf
Issue 23705: Improve the performance of __contains__ checks for deques.
2015-03-20 16:38:56 -07:00
87e691240b
Minor neatening-up. Make assignments in same order a struct fields. Line-up comments.
2015-03-02 23:32:02 -08:00
f9d9c79aa8
Switch the state variable to unsigned for defined wrap-around behavior.
2015-03-02 22:47:46 -08:00
30c9074b96
Minor beautification. Move struct definitions to the top. Fix-up a comment.
2015-03-02 22:31:35 -08:00
f30f5b9ba6
Minor code beautification. Replace macro with in-lineable functions.
2015-03-02 22:23:37 -08:00
3c186ba441
Beautify and better document the use of the size_t cast for bounds checking.
2015-03-02 21:45:02 -08:00
7f9ea7543e
Issue #23553 : Use an unsigned cast to tighten-up the bounds checking logic.
2015-03-01 00:38:00 -08:00
c20830804d
Need a (size_t) cast instead of (unsigned) to be big enough for a Py_ssize_t.
2015-02-28 23:29:16 -08:00
a473b9da15
Use unsigned division and modulo for item assignment as well.
2015-02-28 17:49:47 -08:00
63d1ff2a0b
Convert one more division to unsigned arithmetic to speed-up deque_item().
2015-02-28 07:41:30 -08:00
7e8c7956a7
Line missed in last checkin
2015-02-27 16:59:29 -08:00
da2850f932
Since the index is always non-negative, use faster unsigned division and modulo.
2015-02-27 12:42:54 -08:00
daf57f25e5
Bump the blocksize up from 62 to 64 to speed up the modulo calculation.
...
Remove the old comment suggesting that it was desireable to have
blocksize+2 as a multiple of the cache line length. That would
have made sense only if the block structure start point was always
aligned to a cache line boundary. However, the memory allocations
are 16 byte aligned, so we don't really have control over whether
the struct spills across cache line boundaries.
2015-02-26 23:21:29 -08:00
eb6b554fbc
Update copyright.
2015-02-10 22:37:22 -06:00
0e259f18f7
Optimization guides suggest copying memory in an ascending direction when possible.
2015-02-01 22:53:41 -08:00
507d997714
Add comment and make minor code clean-up to improve clarity.
2014-05-18 21:32:40 +01:00
4b0b1accb5
Issue #21101 : Eliminate double hashing in the C code for collections.Counter().
2014-05-03 16:41:19 -07:00
5402315626
Add implementation notes
2014-04-23 00:58:48 -07:00
e19d9d1467
merge 3.3 ( #20250 )
2014-01-13 23:56:30 -05:00
9cb33b7d03
correct defaultdict signature in docstring ( closes #20250 )
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Patch from Andrew Barnert.
2014-01-13 23:56:05 -05:00
e7f516cbb8
Issue #19512 : _count_elements() of _collections reuses PyId_get identifier
...
instead of literal "get" string
2013-11-06 23:52:55 +01:00
07573d7b24
merge
2013-10-04 16:52:39 -07:00
cb1d96f782
Issue #18594 : Make the C code more closely match the pure python code.
2013-10-04 16:51:02 -07:00
75f65e368e
merge
2013-10-01 21:38:37 -07:00
224c87d60c
Issue #18594 : Fix the fallback path in collections.Counter().
2013-10-01 21:36:09 -07:00
c13516b0a0
merge
2013-10-01 01:00:59 -07:00
2ff2190b62
Issue #18594 : Fix the fast path for collections.Counter().
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The path wasn't being taken due to an over-restrictive type check.
2013-10-01 00:55:43 -07:00
77578204d6
Restore the data block size to 62.
...
The former block size traded away good fit within cache lines in
order to gain faster division in deque_item(). However, compilers
are getting smarter and can now replace the slow division operation
with a fast integer multiply and right shift. Accordingly, it makes
sense to go back to a size that lets blocks neatly fill entire
cache-lines.
GCC-4.8 and CLANG 4.0 both compute "x // 62" with something
roughly equivalent to "x * 9520900167075897609 >> 69".
2013-07-28 02:39:49 -07:00
3223dd5c22
Assertions key off NDEBUG
2013-07-26 23:14:22 -07:00
b97cc49c3a
Minor code simplification by eliminating an unnecessary temporary variable.
2013-07-21 01:51:07 -07:00
90dea4ce43
Tweak the deque struct by moving the least used fields (maxlen and weakref) to the end.
2013-07-13 22:30:25 -07:00
840533bf1c
Use a do-while loop in the inner loop for rotate (m is always greater than zero).
2013-07-13 17:03:58 -07:00
3959af9b2a
Move the freeblock() call outside the main loop to speed-up and simplify the block re-use logic.
2013-07-13 02:34:08 -07:00
d9c116ca40
Add a spacing saving heuristic to deque's extend methods
2013-07-09 00:13:21 -07:00
b385529ddf
Fix #ifdef
2013-07-07 02:07:23 -10:00
82df925451
Use macros for marking and checking endpoints in the doubly-linked list of blocks.
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* Add comment explaining the endpoint checks
* Only do the checks in a debug build
* Simplify newblock() to only require a length argument
and leave the link updates to the calling code.
* Also add comment for the freelisting logic.
2013-07-07 01:43:42 -10:00
f3a67b7e57
Improve variable names in deque_count()
2013-07-06 17:49:06 -10:00
df715ba54d
Apply the PyObject_VAR_HEAD and Py_SIZE macros
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to be consistent with practices in other modules.
2013-07-06 13:01:13 -10:00
5bfa8671bc
Refactor deque_traverse().
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Hoist conditional expression out of the loop.
Use rightblock as the guard instead of checking for NULL.
2013-07-06 11:58:09 -10:00
Eric Snow
Benjamin Peterson
Raymond Hettinger
Victor Stinner