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Marc-André Lemburg 8155e0e541 This patch originated from an idea by Martin v. Loewis who submitted a 
patch for sharing single character Unicode objects.

Martin's patch had to be reworked in a number of ways to take Unicode
resizing into consideration as well. Here's what the updated patch
implements:

* Single character Unicode strings in the Latin-1 range are shared
  (not only ASCII chars as in Martin's original patch).

* The ASCII and Latin-1 codecs make use of this optimization,
  providing a noticable speedup for single character strings. Most
  Unicode methods can use the optimization as well (by virtue
  of using PyUnicode_FromUnicode()).

* Some code cleanup was done (replacing memcpy with Py_UNICODE_COPY)

* The PyUnicode_Resize() can now also handle the case of resizing
  unicode_empty which previously resulted in an error.

* Modified the internal API _PyUnicode_Resize() and
  the public PyUnicode_Resize() API to handle references to
  shared objects correctly. The _PyUnicode_Resize() signature
  changed due to this.

* Callers of PyUnicode_FromUnicode() may now only modify the Unicode
  object contents of the returned object in case they called the API
  with NULL as content template.

Note that even though this patch passes the regression tests, there
may still be subtle bugs in the sharing code.
2001-04-23 14:44:21 +00:00
..
abstract.h Mondo changes to the iterator stuff, without changing how Python code 2001-04-23 14:08:49 +00:00
bitset.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
bufferobject.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
cellobject.h PEP 227 implementation 2001-01-25 20:04:14 +00:00
ceval.h If a code object is compiled with nested scopes, define the CO_NESTED flag. 2001-03-22 02:32:48 +00:00
classobject.h Add the necessary field for weak reference support to the function and 2001-03-23 04:17:58 +00:00
cobject.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
codecs.h Changing the CNRI copyright notice according to CNRI's instructions. 2000-08-03 16:24:25 +00:00
compile.h If a code object is compiled with nested scopes, define the CO_NESTED flag. 2001-03-22 02:32:48 +00:00
complexobject.h ANSI-fication and Py_PROTO extermination. 2000-07-09 00:20:36 +00:00
config.h
cStringIO.h Miscelaneous ANSIfications. I'm assuming here 'main' should take (int, 2000-07-22 19:25:51 +00:00
dictobject.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
errcode.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
eval.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
fileobject.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
floatobject.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
frameobject.h Variety of small INC/DECREF patches that fix reported memory leaks 2001-03-13 01:58:22 +00:00
funcobject.h Add the necessary field for weak reference support to the function and 2001-03-23 04:17:58 +00:00
graminit.h The real suport for augmented assignment: new opcodes, new PyNumber and 2000-08-24 20:09:45 +00:00
grammar.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
import.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
intobject.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
intrcheck.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
iterobject.h Mondo changes to the iterator stuff, without changing how Python code 2001-04-23 14:08:49 +00:00
listobject.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
longintrepr.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
longobject.h Rationalize use of limits.h, moving the inclusion to Python.h. 2000-09-26 05:46:01 +00:00
marshal.h It's unclear whether PyMarshal_XXX() are part of the public or private API. 2001-01-28 00:27:39 +00:00
metagrammar.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
methodobject.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
modsupport.h The addition of new parameters to functions in the Python/C API requires 2001-01-25 22:13:34 +00:00
moduleobject.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
node.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
object.h Mondo changes to the iterator stuff, without changing how Python code 2001-04-23 14:08:49 +00:00
objimpl.h A small change to the C API for weakly-referencable types: Such types 2001-03-22 18:26:47 +00:00
opcode.h Iterators phase 1. This comprises: 2001-04-20 19:13:02 +00:00
osdefs.h RISCOS patch by dschwertberger 2001-03-02 06:10:17 +00:00
parsetok.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
patchlevel.h Change the version to 2.2a0. This may look strange, but indicates 2001-04-18 04:31:01 +00:00
pgenheaders.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
py_curses.h Added header file for C API exported by _cursesmodule.c 2000-12-22 21:51:10 +00:00
pydebug.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
pyerrors.h Iterators phase 1. This comprises: 2001-04-20 19:13:02 +00:00
pyfpe.h Some patches to Lee Busby's fpectl mods that accidentally didn't make it 1997-10-20 23:50:01 +00:00
pygetopt.h Move our own getopt() implementation to _PyOS_GetOpt(), and use it 2000-11-03 08:18:37 +00:00
pymem.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
pyport.h Remove include-file-dependant half-prototype of clnt_create(). 2001-01-22 16:50:11 +00:00
pystate.h Add a new API, PyThreadState_DeleteCurrent() that combines 2001-01-23 01:46:06 +00:00
Python.h Iterators phase 1. This comprises: 2001-04-20 19:13:02 +00:00
pythonrun.h Add sys.excepthook. 2001-03-23 02:46:52 +00:00
pythread.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
rangeobject.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
rename1.h
sliceobject.h ANSI-fication and Py_PROTO extermination. 2000-07-09 00:55:06 +00:00
stringobject.h _Py_ReleaseInternedStrings(): Private API function to decref and 2001-02-23 16:40:48 +00:00
structmember.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
symtable.h Set the line number correctly for a nested function with an exec or 2001-03-22 03:57:58 +00:00
sysmodule.h Add declarations for PySys_ResetWarnOptions() and 2000-12-15 22:01:39 +00:00
token.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
traceback.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
tupleobject.h REMOVED all CWI, CNRI and BeOpen copyright markings. 2000-09-01 23:29:29 +00:00
ucnhash.h refactored the unicodeobject/ucnhash interface, to hide the 2001-01-19 09:45:02 +00:00
unicodeobject.h This patch originated from an idea by Martin v. Loewis who submitted a 2001-04-23 14:44:21 +00:00