Commit Graph

34620 Commits

Author SHA1 Message Date
Fredrik Lundh c3434b3834 needforspeed: use fastsearch also for find/index and contains. the
related tests are now about 10x faster.
2006-05-25 18:44:29 +00:00
Georg Brandl cfecd599b6 Guard the _active.remove() call to avoid errors when there is no _active list. 2006-05-25 18:44:09 +00:00
Bob Ippolito a85bf202ac Faster path for PyLong_FromLongLong, using PyLong_FromLong algorithm 2006-05-25 18:20:23 +00:00
Andrew Dalke 598710c727 Added overflow test for adding two (very) large strings where the
new string is over max Py_ssize_t.  I have no way to test it on my
box or any box I have access to.  At least it doesn't break anything.
2006-05-25 18:18:39 +00:00
Andrew M. Kuchling f344c94c85 Comment typo 2006-05-25 18:11:16 +00:00
Andrew Dalke b552c4d848 Code had returned an ssize_t, upcast to long, then converted with PyInt_FromLong.
Now using PyInt_FromSsize_t.
2006-05-25 18:03:25 +00:00
Fredrik Lundh af72237abc needforspeed: use "fastsearch" for count. this results in a 3x speedup
for the related stringbench tests.
2006-05-25 17:55:31 +00:00
Andrew Dalke 8c9091074b Fixed problem identified by Georg. The special-case in-place code for replace
made a copy of the string using PyString_FromStringAndSize(s, n) and modify
the copied string in-place.  However, 1 (and 0) character strings are shared
from a cache.  This cause "A".replace("A", "a") to change the cached version
of "A" -- used by everyone.

Now may the copy with NULL as the string and do the memcpy manually.  I've
added regression tests to check if this happens in the future.  Perhaps
there should be a PyString_Copy for this case?
2006-05-25 17:53:00 +00:00
Tim Peters da53afa1b0 A new table to help string->integer conversion was added yesterday to
both mystrtoul.c and longobject.c.  Share the table instead.  Also
cut its size by 64 entries (they had been used for an inscrutable
trick originally, but the code no longer tries to use that trick).
2006-05-25 17:34:03 +00:00
Fredrik Lundh e68955cf32 needforspeed: new replace implementation by Andrew Dalke. replace is
now about 3x faster on my machine, for the replace tests from string-
bench.
2006-05-25 17:08:14 +00:00
Fredrik Lundh 0c71f88fc9 needforspeed: check for overflow in replace (from Andrew Dalke) 2006-05-25 16:46:54 +00:00
Kristján Valur Jónsson 44aa9f7139 Fix incorrect documentation for the Py_IS_FINITE(X) macro. 2006-05-25 16:39:27 +00:00
Andrew M. Kuchling cc1ecf4d6d Fix another typo 2006-05-25 16:34:54 +00:00
Andrew Dalke 2bddcbf10e Added tests for implementation error we came up with in the need for speed sprint. 2006-05-25 16:30:52 +00:00
Andrew M. Kuchling 1d2576dbf0 Fix comment typos 2006-05-25 16:23:15 +00:00
Fredrik Lundh dfe503d3f0 needforspeed: _toupper/_tolower is a SUSv2 thing; fall back on ISO C
versions if they're not defined.
2006-05-25 16:10:12 +00:00
Kristján Valur Jónsson f94323fbb4 Added a new macro, Py_IS_FINITE(X). On windows there is an intrinsic for this and it is more efficient than to use !Py_IS_INFINITE(X) && !Py_IS_NAN(X). No change on other platforms 2006-05-25 15:53:30 +00:00
Fredrik Lundh 4b4e33ef14 needforspeed: make new upper/lower work properly for single-character
strings too... (thanks to georg brandl for spotting the exact problem
faster than anyone else)
2006-05-25 15:49:45 +00:00
Fredrik Lundh 39ccef607e needforspeed: speed up upper and lower for 8-bit string objects.
(the unicode versions of these are still 2x faster on windows,
though...)

based on work by Andrew Dalke, with tweaks by yours truly.
2006-05-25 15:22:03 +00:00
Andrew M. Kuchling c620bada3a Add entry; and fix a typo 2006-05-25 12:27:59 +00:00
Thomas Wouters 143bdfcee6 Update graminit.c for the fix for #1488915, Multiple dots in relative import
statement raise SyntaxError, and add testcase.
2006-05-25 11:26:25 +00:00
Thomas Wouters cf8229ea3b Fix #1488915, Multiple dots in relative import statement raise SyntaxError. 2006-05-25 11:25:51 +00:00
Walter Dörwald c611f17418 Replace tab inside comment with space. 2006-05-25 08:53:28 +00:00
Fred Drake 61bbe6c37c fix broken links in PDF
(SF patch #1281291, contributed by Rory Yorke)
2006-05-25 02:42:25 +00:00
Andrew M. Kuchling 3cdf24bc99 Minor edits; add an item 2006-05-25 00:23:03 +00:00
Tim Peters 696cf43b58 Heavily fiddled variant of patch #1442927: PyLong_FromString optimization.
``long(str, base)`` is now up to 6x faster for non-power-of-2 bases.  The
largest speedup is for inputs with about 1000 decimal digits.  Conversion
from non-power-of-2 bases remains quadratic-time in the number of input
digits (it was and remains linear-time for bases 2, 4, 8, 16 and 32).

Speedups at various lengths for decimal inputs, comparing 2.4.3 with
current trunk.  Note that it's actually a bit slower for 1-digit strings:

  len  speedup
 ----  -------
   1     -4.5%
   2      4.6%
   3      8.3%
   4     12.7%
   5     16.9%
   6     28.6%
   7     35.5%
   8     44.3%
   9     46.6%
  10     55.3%
  11     65.7%
  12     77.7%
  13     73.4%
  14     75.3%
  15     85.2%
  16    103.0%
  17     95.1%
  18    112.8%
  19    117.9%
  20    128.3%
  30    174.5%
  40    209.3%
  50    236.3%
  60    254.3%
  70    262.9%
  80    295.8%
  90    297.3%
 100    324.5%
 200    374.6%
 300    403.1%
 400    391.1%
 500    388.7%
 600    440.6%
 700    468.7%
 800    498.0%
 900    507.2%
1000    501.2%
2000    450.2%
3000    463.2%
4000    452.5%
5000    440.6%
6000    439.6%
7000    424.8%
8000    418.1%
9000    417.7%
2006-05-24 21:10:40 +00:00
Tim Peters f4049089c5 Disable the damn empty-string replace test -- it can't
be make to pass now for unicode if it passes for str, or
vice versa.
2006-05-24 21:00:45 +00:00
Tim Peters f47b1cd839 Whitespace normalization. 2006-05-24 20:29:44 +00:00
Tim Peters beaec0c3a1 We can't leave the checked-in tests broken. 2006-05-24 20:27:18 +00:00
Andrew Dalke e5488ec01e Added a slew of test for string replace, based various corner cases from
the Need For Speed sprint coding.  Includes commented out overflow tests
which will be uncommented once the code is fixed.

This test will break the 8-bit string tests because
    "".replace("", "A") == "" when it should == "A"

We have a fix for it, which should be added tomorrow.
2006-05-24 18:55:37 +00:00
Fredrik Lundh 347ee277aa needforspeed: refactored the replace code slightly; special-case
constant-length changes; use fastsearch to locate the first match.
2006-05-24 16:35:18 +00:00
Bob Ippolito eb62127842 refactor unpack, add unpack_from 2006-05-24 15:32:06 +00:00
Fredrik Lundh d5e0dc51cf needforspeedindeed: use fastsearch also for __contains__ 2006-05-24 15:11:01 +00:00
Fredrik Lundh 6471ee4f18 needforspeed: use "fastsearch" for count and findstring helpers. this
results in a 2.5x speedup on the stringbench count tests, and a 20x (!)
speedup on the stringbench search/find/contains test, compared to 2.5a2.

for more on the algorithm, see:

    http://effbot.org/zone/stringlib.htm

if you get weird results, you can disable the new algoritm by undefining
USE_FAST in Objects/unicodeobject.c.

enjoy /F
2006-05-24 14:28:11 +00:00
Fredrik Lundh 240bf2a8e4 use Py_ssize_t for string indexes (thanks, neal!) 2006-05-24 10:20:36 +00:00
Tim Peters 8ff672e62d Add missing svn:eol-style property to text files. 2006-05-23 21:55:53 +00:00
Tim Peters 211219af4f Whitespace normalization. 2006-05-23 21:54:23 +00:00
Tim Peters 1bddfb84ee test_struct grew weird behavior under regrtest.py -R,
due to a module-level cache.  Clearing the cache should
make it stop showing up in refleak reports.
2006-05-23 21:51:35 +00:00
Fredrik Lundh 7763351808 return 0 on misses, not -1. 2006-05-23 19:47:35 +00:00
Tim Peters f178e5c1b7 Get the Windows build working again (recover from
`struct` module changes).
2006-05-23 19:34:37 +00:00
Andrew M. Kuchling 70bd199fa4 Add item 2006-05-23 19:32:35 +00:00
Bob Ippolito 07c023b10e fix typo in _struct 2006-05-23 19:32:25 +00:00
Bob Ippolito d3611eb3c6 forward declaration for PyStructType 2006-05-23 19:31:23 +00:00
Andrew M. Kuchling 150faff195 Add two items 2006-05-23 19:29:38 +00:00
Bob Ippolito 4de3f998bf fix linking issue, warnings, in struct 2006-05-23 19:25:52 +00:00
Bob Ippolito 232f3c91f9 patch #1493701: performance enhancements for struct module 2006-05-23 19:12:41 +00:00
Bob Ippolito 7ccc95a315 patch #1493701: performance enhancements for struct module 2006-05-23 19:11:34 +00:00
Bob Ippolito 27abce5ba8 revert #1493701 2006-05-23 19:09:51 +00:00
Andrew M. Kuchling 9deeeef092 Remove duplicate item 2006-05-23 19:00:45 +00:00
Bob Ippolito fb8b84af54 Patch #1493701: performance enhancements for struct module. 2006-05-23 18:46:41 +00:00