GH-117108: Change the size of the GC increment to about 1% of the total heap size. #117120

markshannon · 2024-03-21T12:43:30Z

The previous design of choosing increments based on the number of survivors doesn't work.
In order to handle the case of code that produces nothing but cycles, the rate of collection needs to be so high that the case of code that produces no cycles is slowed down hugely.

Fortunately, the fix is quite simple: base the size of the increment on the size of the heap.
Essentially we perform a whole-heap collection at the same rate as the traditional cycle collection, but in increments.
In the old collector, the thresholds were set so that a full heap collection was done every 100 young collections. We now do a 1% increment with every young collection.

Issue: Major slowdown on large listcomp #117108

mdboom · 2024-03-21T14:22:03Z

Seems like this one is worth benchmarking (even though our gc benchmarks are a bit non-sensical, we may some things in the other ones). I fired off a run.

mdboom

I don't feel qualified to comment on the whole thing, but wanted to leave a reminder from #117123 to confirm it compiles with --enable-pystats and any new stats are added to summarize_stats.py.

tim-one · 2024-03-21T18:42:55Z

There are a couple compile-time warnings on the Windows build:

C:\Code\Python\Python\gc.c(1240,30): warning C4244: 'function': conversion from 'uintptr_t' to 'int', possibl
e loss of data [C:\Code\Python\PCbuild\pythoncore.vcxproj]

My guess is that gc_set_old_space() should be declared as having a fatter size argument than int.

C:\Code\Python\Python\gc.c(1700,54): warning C4244: 'function': conversion from 'Py_ssize_t' to 'int', possib
le loss of data [C:\Code\Python\PCbuild\pythoncore.vcxproj]

And here I guess _PyGC_GetObjects()'s generation argument should be int instead of Py_ssize_t.

mdboom · 2024-03-21T22:25:43Z

This PR overall improves speed by 27% GM / 0% HPT on the benchmarking suite and uses 6% more memory, however, this is after the regression in #116206 of 24% GM / 0% HPT slower, using 1% less memory. Running a custom comparison between the commit just before #116206 and this PR, it's an overall improvement of 2% GM / 0% HPT for the GC changes + the bugfix in this PR.

In hindsight, we probably should have measured and not merged #116206 to begin with, because the regression is so obvious in some benchmarks.

(Here GM == Geometric mean, HPT == Heirarchical Performance Testing method).

mdboom · 2024-03-22T13:41:47Z

Given #117123, and the performance regression, maybe it makes sense to revert #116206 while working on getting this right?

markshannon · 2024-03-22T14:28:37Z

Given #117123, and the performance regression, maybe it makes sense to revert #116206 while working on getting this right?

Why not merge this PR? Your numbers show that it is faster than before #116206

mdboom · 2024-03-22T14:32:57Z

Given #117123, and the performance regression, maybe it makes sense to revert #116206 while working on getting this right?

Why not merge this PR? Your numbers show that it is faster than before #116206

That's fine, too. I was just concerned about giving it the time it needs for a review (seeing none).

ericsnowcurrently

First of all, I want to be clear that I have only a basic understanding of the GC implementation, and perhaps even less so of the new incremental GC. Consequently, the confidence interval around my assessment here is quite large.

Even from that point of view, the fix in this PR seems straightforward and the correlation to an impact on performances is clear. However, if you think this PR might have any subtle secondary effects to consider then you should get an additional review from someone more expert.

I'm approving the PR under the assumption that you will address my few concerns and answer my questions (and get an expert review, if necessary) before merging.

Lib/test/test_gc.py

Python/gc.c

mdboom · 2024-03-22T17:30:09Z

Looking deeper at the benchmarking data for this PR vs. the commit prior to #116206, memory usage is up pretty significantly for the benchmarks that actually have a lot of data. (By 45% for mypy2, for example). Maybe that doesn't matter as long as the memory usage still has a reasonable upper bound, but it's something to probably confirm.

Memory usage of this PR vs. prior to incremental GC

markshannon · 2024-03-22T17:39:43Z

OOI, how much in absolute terms? A relative increase in memory isn't that meaningful.

We expect short lived programs to have increased memory use as the collector will lag a bit more than before, being an incremental collector.

Modules/gcmodule.c

mdboom · 2024-03-22T17:53:09Z

OOI, how much in absolute terms? A relative increase in memory isn't that meaningful.

Here's the absolute numbers.

I think what really matters for this is to ensure that highly cyclical data structures are still collected in a reasonable time frame. I think the only way to get that from the data would be to increase the number of iterations and see how that affects memory usage.

Absolute differences in memory usage

benchmark	base	head	diff
2to3	23,279,323	23,574,625	295,302
aiohttp	30,047,865	29,992,862	-55,003
async_generators	36,232,825	36,214,101	-18,724
async_tree_none	80,446,220	80,228,937	-217,283
async_tree_cpu_io_mixed	83,602,090	83,824,640	222,550
async_tree_cpu_io_mixed_tg	92,690,529	93,186,925	496,396
async_tree_io	136,706,145	135,888,700	-817,445
async_tree_io_tg	145,445,644	146,071,747	626,103
async_tree_memoization	86,078,610	85,938,371	-140,239
async_tree_memoization_tg	95,327,768	95,374,189	46,421
async_tree_none_tg	89,782,369	89,443,961	-338,408
asyncio_tcp	50,583,454	51,326,390	742,936
asyncio_tcp_ssl	76,057,648	76,106,020	48,372
asyncio_websockets	65,070,811	64,648,728	-422,083
chameleon	29,368,905	29,676,300	307,395
chaos	17,821,110	17,829,107	7,997
comprehensions	19,322,782	19,364,717	41,935
bench_mp_pool	20,654,762	20,830,890	176,128
coroutines	17,117,379	17,019,270	-98,109
crypto_pyaes	17,455,981	17,514,691	58,710
dask	88,305,273	88,550,448	245,175
deepcopy	18,866,956	18,866,176	-780
deepcopy_reduce	18,834,578	18,855,643	21,065
deepcopy_memo	18,891,727	18,836,918	-54,809
deltablue	19,162,648	21,385,216	2,222,568
django_template	43,785,069	43,736,697	-48,372
djangocms	30,294,016	30,260,467	-33,549
docutils	64,943,835	85,793,840	20,850,005
dulwich_log	26,350,348	25,903,299	-447,049
fannkuch	17,007,957	16,951,393	-56,564
float	34,400,158	34,406,009	5,851
create_gc_cycles	17,081,685	17,093,973	12,288
gc_traversal	20,627,651	20,528,566	-99,085
generators	29,539,571	29,482,227	-57,344
genshi_text	20,681,094	21,016,576	335,482
genshi_xml	21,943,832	22,484,114	540,282
go	20,013,641	18,889,191	-1,124,450
gunicorn	30,099,553	29,992,667	-106,886
hexiom	18,173,561	18,145,475	-28,086
html5lib	37,427,687	41,330,590	3,902,903
json	18,928,006	18,950,241	22,235
json_dumps	17,250,986	17,288,630	37,644
json_loads	17,275,172	17,305,600	30,428
logging_format	24,717,994	24,727,942	9,948
logging_silent	17,715,395	17,760,256	44,861
logging_simple	23,280,688	23,272,691	-7,997
mako	26,486,881	26,608,396	121,515
mdp	25,583,225	25,669,827	86,602
meteor_contest	19,434,739	19,383,442	-51,297
mypy2	167,246,116	242,955,605	75,709,489
nbody	17,175,308	17,166,336	-8,972
nqueens	17,238,308	17,207,491	-30,817
pathlib	18,659,035	18,834,383	175,348
pickle	17,929,362	18,064,140	134,778
pickle_dict	17,877,869	17,895,228	17,359
pickle_list	17,998,799	17,963,885	-34,914
pickle_pure_python	17,842,371	17,920,975	78,604
pidigits	17,161,264	17,136,883	-24,381
pprint_safe_repr	37,872,591	37,859,718	-12,873
pprint_pformat	37,840,798	37,846,454	5,656
pycparser	39,668,784	46,512,420	6,843,636
pyflate	60,085,199	59,582,366	-502,833
pylint	92,368,310	95,753,752	3,385,442
python_startup	13,590,332	13,637,729	47,397
python_startup_no_site	13,584,871	13,620,175	35,304
raytrace	17,892,108	17,909,662	17,554
regex_dna	25,022,854	25,080,393	57,539
regex_effbot	17,865,971	17,899,520	33,549
regex_v8	23,517,086	23,460,327	-56,759
richards	17,694,720	17,702,912	8,192
richards_super	17,723,392	17,667,413	-55,979
scimark_fft	18,076,428	18,055,168	-21,260
scimark_lu	17,692,769	17,755,769	63,000
scimark_monte_carlo	18,058,873	18,048,926	-9,947
scimark_sparse_mat_mult	18,079,353	18,216,667	137,314
spectral_norm	16,931,693	17,008,932	77,239
sqlglot_normalize	22,803,407	22,787,218	-16,189
sqlglot_optimize	23,573,845	23,881,045	307,200
sqlglot_parse	22,958,665	25,704,350	2,745,685
sqlglot_transpile	23,045,461	24,079,993	1,034,532
sqlite_synth	19,792,457	19,782,509	-9,948
sympy_expand	59,473,139	59,392,975	-80,164
sympy_integrate	60,309,504	60,277,126	-32,378
sympy_sum	72,773,632	72,791,771	18,139
sympy_str	60,266,203	60,242,602	-23,601
telco	17,062,180	17,114,453	52,273
thrift	18,817,609	18,836,528	18,919
tomli_loads	180,438,162	177,827,254	-2,610,908
tornado_http	41,430,649	41,497,356	66,707
typing_runtime_protocols	19,174,156	19,157,772	-16,384
unpack_sequence	18,567,753	18,615,929	48,176
unpickle	18,123,239	18,082,474	-40,765
unpickle_list	18,007,186	18,036,248	29,062
unpickle_pure_python	17,914,343	17,938,529	24,186
xml_etree_parse	22,025,362	22,069,443	44,081
xml_etree_iterparse	22,826,227	22,949,107	122,880
xml_etree_generate	23,017,569	23,610,514	592,945
xml_etree_process	22,720,121	22,722,462	2,341

markshannon · 2024-03-22T18:42:51Z

I'm going to merge this, as it does fix the immediate problem.

The memory use for mypy2 is up significantly, but the memory use for "tomli_loads", which also uses a significant amount of memory, is down.
I'll leave the issue open and we can look to fine tune thresholds later.

mdboom · 2024-03-22T18:45:02Z

I'm going to merge this, as it does fix the immediate problem.

Ok, and you are going to fix the pystats build as a follow-on, rather than addressing here?

bedevere-bot · 2024-03-22T19:24:57Z

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot s390x SLES 3.x has failed when building commit e28477f.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/540/builds/8404) and take a look at the build logs.
Check if the failure is related to this commit (e28477f) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/540/builds/8404

Failed tests:

test.test_multiprocessing_spawn.test_processes
test.test_multiprocessing_fork.test_processes

Summary of the results of the build (if available):

==

Click to see traceback logs

remote: Enumerating objects: 23, done.        
remote: Counting objects:   4% (1/22)        
remote: Counting objects:   9% (2/22)        
remote: Counting objects:  13% (3/22)        
remote: Counting objects:  18% (4/22)        
remote: Counting objects:  22% (5/22)        
remote: Counting objects:  27% (6/22)        
remote: Counting objects:  31% (7/22)        
remote: Counting objects:  36% (8/22)        
remote: Counting objects:  40% (9/22)        
remote: Counting objects:  45% (10/22)        
remote: Counting objects:  50% (11/22)        
remote: Counting objects:  54% (12/22)        
remote: Counting objects:  59% (13/22)        
remote: Counting objects:  63% (14/22)        
remote: Counting objects:  68% (15/22)        
remote: Counting objects:  72% (16/22)        
remote: Counting objects:  77% (17/22)        
remote: Counting objects:  81% (18/22)        
remote: Counting objects:  86% (19/22)        
remote: Counting objects:  90% (20/22)        
remote: Counting objects:  95% (21/22)        
remote: Counting objects: 100% (22/22)        
remote: Counting objects: 100% (22/22), done.        
remote: Compressing objects:   6% (1/16)        
remote: Compressing objects:  12% (2/16)        
remote: Compressing objects:  18% (3/16)        
remote: Compressing objects:  25% (4/16)        
remote: Compressing objects:  31% (5/16)        
remote: Compressing objects:  37% (6/16)        
remote: Compressing objects:  43% (7/16)        
remote: Compressing objects:  50% (8/16)        
remote: Compressing objects:  56% (9/16)        
remote: Compressing objects:  62% (10/16)        
remote: Compressing objects:  68% (11/16)        
remote: Compressing objects:  75% (12/16)        
remote: Compressing objects:  81% (13/16)        
remote: Compressing objects:  87% (14/16)        
remote: Compressing objects:  93% (15/16)        
remote: Compressing objects: 100% (16/16)        
remote: Compressing objects: 100% (16/16), done.        
remote: Total 23 (delta 7), reused 9 (delta 6), pack-reused 1        
From https://github.com/python/cpython
 * branch                    main       -> FETCH_HEAD
Note: switching to 'e28477f214276db941e715eebc8cdfb96c1207d9'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at e28477f2142 GH-117108: Change the size of the GC increment to about 1% of the total heap size. (GH-117120)
Switched to and reset branch 'main'

make: *** [Makefile:2201: buildbottest] Error 2

bedevere-bot · 2024-03-22T19:25:21Z

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot s390x Debian 3.x has failed when building commit e28477f.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/49/builds/8449) and take a look at the build logs.
Check if the failure is related to this commit (e28477f) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/49/builds/8449

Failed tests:

test.test_multiprocessing_forkserver.test_processes

Summary of the results of the build (if available):

==

Click to see traceback logs

remote: Enumerating objects: 23, done.        
remote: Counting objects:   4% (1/22)        
remote: Counting objects:   9% (2/22)        
remote: Counting objects:  13% (3/22)        
remote: Counting objects:  18% (4/22)        
remote: Counting objects:  22% (5/22)        
remote: Counting objects:  27% (6/22)        
remote: Counting objects:  31% (7/22)        
remote: Counting objects:  36% (8/22)        
remote: Counting objects:  40% (9/22)        
remote: Counting objects:  45% (10/22)        
remote: Counting objects:  50% (11/22)        
remote: Counting objects:  54% (12/22)        
remote: Counting objects:  59% (13/22)        
remote: Counting objects:  63% (14/22)        
remote: Counting objects:  68% (15/22)        
remote: Counting objects:  72% (16/22)        
remote: Counting objects:  77% (17/22)        
remote: Counting objects:  81% (18/22)        
remote: Counting objects:  86% (19/22)        
remote: Counting objects:  90% (20/22)        
remote: Counting objects:  95% (21/22)        
remote: Counting objects: 100% (22/22)        
remote: Counting objects: 100% (22/22), done.        
remote: Compressing objects:   6% (1/16)        
remote: Compressing objects:  12% (2/16)        
remote: Compressing objects:  18% (3/16)        
remote: Compressing objects:  25% (4/16)        
remote: Compressing objects:  31% (5/16)        
remote: Compressing objects:  37% (6/16)        
remote: Compressing objects:  43% (7/16)        
remote: Compressing objects:  50% (8/16)        
remote: Compressing objects:  56% (9/16)        
remote: Compressing objects:  62% (10/16)        
remote: Compressing objects:  68% (11/16)        
remote: Compressing objects:  75% (12/16)        
remote: Compressing objects:  81% (13/16)        
remote: Compressing objects:  87% (14/16)        
remote: Compressing objects:  93% (15/16)        
remote: Compressing objects: 100% (16/16)        
remote: Compressing objects: 100% (16/16), done.        
remote: Total 23 (delta 7), reused 9 (delta 6), pack-reused 1        
From https://github.com/python/cpython
 * branch                    main       -> FETCH_HEAD
Note: switching to 'e28477f214276db941e715eebc8cdfb96c1207d9'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at e28477f2142 GH-117108: Change the size of the GC increment to about 1% of the total heap size. (GH-117120)
Switched to and reset branch 'main'

make: *** [Makefile:2204: buildbottest] Error 2

bedevere-bot · 2024-03-22T19:26:22Z

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot ARM64 macOS 3.x has failed when building commit e28477f.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/725/builds/7475) and take a look at the build logs.
Check if the failure is related to this commit (e28477f) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/725/builds/7475

Failed tests:

test.test_multiprocessing_spawn.test_processes
test.test_multiprocessing_forkserver.test_processes

Summary of the results of the build (if available):

==

Click to see traceback logs

remote: Enumerating objects: 23, done.        
remote: Counting objects:   4% (1/22)        
remote: Counting objects:   9% (2/22)        
remote: Counting objects:  13% (3/22)        
remote: Counting objects:  18% (4/22)        
remote: Counting objects:  22% (5/22)        
remote: Counting objects:  27% (6/22)        
remote: Counting objects:  31% (7/22)        
remote: Counting objects:  36% (8/22)        
remote: Counting objects:  40% (9/22)        
remote: Counting objects:  45% (10/22)        
remote: Counting objects:  50% (11/22)        
remote: Counting objects:  54% (12/22)        
remote: Counting objects:  59% (13/22)        
remote: Counting objects:  63% (14/22)        
remote: Counting objects:  68% (15/22)        
remote: Counting objects:  72% (16/22)        
remote: Counting objects:  77% (17/22)        
remote: Counting objects:  81% (18/22)        
remote: Counting objects:  86% (19/22)        
remote: Counting objects:  90% (20/22)        
remote: Counting objects:  95% (21/22)        
remote: Counting objects: 100% (22/22)        
remote: Counting objects: 100% (22/22), done.        
remote: Compressing objects:   6% (1/16)        
remote: Compressing objects:  12% (2/16)        
remote: Compressing objects:  18% (3/16)        
remote: Compressing objects:  25% (4/16)        
remote: Compressing objects:  31% (5/16)        
remote: Compressing objects:  37% (6/16)        
remote: Compressing objects:  43% (7/16)        
remote: Compressing objects:  50% (8/16)        
remote: Compressing objects:  56% (9/16)        
remote: Compressing objects:  62% (10/16)        
remote: Compressing objects:  68% (11/16)        
remote: Compressing objects:  75% (12/16)        
remote: Compressing objects:  81% (13/16)        
remote: Compressing objects:  87% (14/16)        
remote: Compressing objects:  93% (15/16)        
remote: Compressing objects: 100% (16/16)        
remote: Compressing objects: 100% (16/16), done.        
remote: Total 23 (delta 7), reused 9 (delta 6), pack-reused 1        
From https://github.com/python/cpython
 * branch                    main       -> FETCH_HEAD
Note: switching to 'e28477f214276db941e715eebc8cdfb96c1207d9'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at e28477f2142 GH-117108: Change the size of the GC increment to about 1% of the total heap size. (GH-117120)
Switched to and reset branch 'main'

Python/gc.c:1295:16: warning: variable 'survivor_count' set but not used [-Wunused-but-set-variable]
    Py_ssize_t survivor_count = 0;
               ^
1 warning generated.
In file included from ./Modules/_tkinter.c:52:
In file included from /opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/tk.h:99:
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:131:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
        int (*free_private)();  /* called to free private storage */
                           ^
                            void
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:334:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
        struct _XImage *(*create_image)();
                                       ^
                                        void
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:453:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
        XID (*resource_alloc)(); /* allocator function */
                             ^
                              void
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:471:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
        int (*synchandler)();   /* Synchronization handler */
                          ^
                           void
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:496:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
        Bool (*event_vec[128])();  /* vector for wire to event */
                              ^
                               void
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:497:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
        Status (*wire_vec[128])(); /* vector for event to wire */
                               ^
                                void
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:509:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
        Bool (**error_vec)();      /* vector for wire to error */
                          ^
                           void
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:522:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
        int (*savedsynchandler)(); /* user synchandler when Xlib usurps */
                               ^
                                void
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:1053:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
typedef void (*XIMProc)();
                       ^
                        void
In file included from ./Modules/tkappinit.c:17:
In file included from /opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/tk.h:99:
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:131:21: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
        int (*free_private)();  /* called to free private storage */
                           ^
                            void
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:334:33: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
        struct _XImage *(*create_image)();
                                       ^
                                        void
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:453:23: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
        XID (*resource_alloc)(); /* allocator function */
                             ^
                              void
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:471:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
        int (*synchandler)();   /* Synchronization handler */
                          ^
                           void
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:496:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
        Bool (*event_vec[128])();  /* vector for wire to event */
                              ^
                               void
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:497:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
        Status (*wire_vec[128])(); /* vector for event to wire */
                               ^
                                void
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:509:20: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
        Bool (**error_vec)();      /* vector for wire to error */
                          ^
                           void
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:522:25: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
        int (*savedsynchandler)(); /* user synchandler when Xlib usurps */
                               ^
                                void
/opt/homebrew/Cellar/tcl-tk/8.6.13_5/include/tcl-tk/X11/Xlib.h:1053:24: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
typedef void (*XIMProc)();
                       ^
                        void
9 warnings generated.
9 warnings generated.

make: *** [buildbottest] Error 2

bedevere-bot · 2024-03-22T19:40:41Z

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 FreeBSD 3.x has failed when building commit e28477f.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/1223/builds/2551) and take a look at the build logs.
Check if the failure is related to this commit (e28477f) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/1223/builds/2551

Failed tests:

test.test_multiprocessing_spawn.test_processes
test.test_multiprocessing_forkserver.test_processes

Summary of the results of the build (if available):

==

Click to see traceback logs

remote: Enumerating objects: 23, done.        
remote: Counting objects:   4% (1/22)        
remote: Counting objects:   9% (2/22)        
remote: Counting objects:  13% (3/22)        
remote: Counting objects:  18% (4/22)        
remote: Counting objects:  22% (5/22)        
remote: Counting objects:  27% (6/22)        
remote: Counting objects:  31% (7/22)        
remote: Counting objects:  36% (8/22)        
remote: Counting objects:  40% (9/22)        
remote: Counting objects:  45% (10/22)        
remote: Counting objects:  50% (11/22)        
remote: Counting objects:  54% (12/22)        
remote: Counting objects:  59% (13/22)        
remote: Counting objects:  63% (14/22)        
remote: Counting objects:  68% (15/22)        
remote: Counting objects:  72% (16/22)        
remote: Counting objects:  77% (17/22)        
remote: Counting objects:  81% (18/22)        
remote: Counting objects:  86% (19/22)        
remote: Counting objects:  90% (20/22)        
remote: Counting objects:  95% (21/22)        
remote: Counting objects: 100% (22/22)        
remote: Counting objects: 100% (22/22), done.        
remote: Compressing objects:   6% (1/16)        
remote: Compressing objects:  12% (2/16)        
remote: Compressing objects:  18% (3/16)        
remote: Compressing objects:  25% (4/16)        
remote: Compressing objects:  31% (5/16)        
remote: Compressing objects:  37% (6/16)        
remote: Compressing objects:  43% (7/16)        
remote: Compressing objects:  50% (8/16)        
remote: Compressing objects:  56% (9/16)        
remote: Compressing objects:  62% (10/16)        
remote: Compressing objects:  68% (11/16)        
remote: Compressing objects:  75% (12/16)        
remote: Compressing objects:  81% (13/16)        
remote: Compressing objects:  87% (14/16)        
remote: Compressing objects:  93% (15/16)        
remote: Compressing objects: 100% (16/16)        
remote: Compressing objects: 100% (16/16), done.        
remote: Total 23 (delta 7), reused 9 (delta 6), pack-reused 1        
From https://github.com/python/cpython
 * branch                  main       -> FETCH_HEAD
Note: switching to 'e28477f214276db941e715eebc8cdfb96c1207d9'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at e28477f214 GH-117108: Change the size of the GC increment to about 1% of the total heap size. (GH-117120)
Switched to and reset branch 'main'

bedevere-bot · 2024-03-22T19:45:20Z

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 FreeBSD14 3.x has failed when building commit e28477f.

What do you need to do:

Don't panic.
Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
Go to the page of the buildbot that failed (https://buildbot.python.org/all/#builders/1232/builds/1778) and take a look at the build logs.
Check if the failure is related to this commit (e28477f) or if it is a false positive.
If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/all/#builders/1232/builds/1778

Failed tests:

test.test_multiprocessing_spawn.test_processes
test.test_multiprocessing_fork.test_processes
test.test_multiprocessing_forkserver.test_processes

Summary of the results of the build (if available):

==

Click to see traceback logs

remote: Enumerating objects: 23, done.        
remote: Counting objects:   4% (1/22)        
remote: Counting objects:   9% (2/22)        
remote: Counting objects:  13% (3/22)        
remote: Counting objects:  18% (4/22)        
remote: Counting objects:  22% (5/22)        
remote: Counting objects:  27% (6/22)        
remote: Counting objects:  31% (7/22)        
remote: Counting objects:  36% (8/22)        
remote: Counting objects:  40% (9/22)        
remote: Counting objects:  45% (10/22)        
remote: Counting objects:  50% (11/22)        
remote: Counting objects:  54% (12/22)        
remote: Counting objects:  59% (13/22)        
remote: Counting objects:  63% (14/22)        
remote: Counting objects:  68% (15/22)        
remote: Counting objects:  72% (16/22)        
remote: Counting objects:  77% (17/22)        
remote: Counting objects:  81% (18/22)        
remote: Counting objects:  86% (19/22)        
remote: Counting objects:  90% (20/22)        
remote: Counting objects:  95% (21/22)        
remote: Counting objects: 100% (22/22)        
remote: Counting objects: 100% (22/22), done.        
remote: Compressing objects:   6% (1/16)        
remote: Compressing objects:  12% (2/16)        
remote: Compressing objects:  18% (3/16)        
remote: Compressing objects:  25% (4/16)        
remote: Compressing objects:  31% (5/16)        
remote: Compressing objects:  37% (6/16)        
remote: Compressing objects:  43% (7/16)        
remote: Compressing objects:  50% (8/16)        
remote: Compressing objects:  56% (9/16)        
remote: Compressing objects:  62% (10/16)        
remote: Compressing objects:  68% (11/16)        
remote: Compressing objects:  75% (12/16)        
remote: Compressing objects:  81% (13/16)        
remote: Compressing objects:  87% (14/16)        
remote: Compressing objects:  93% (15/16)        
remote: Compressing objects: 100% (16/16)        
remote: Compressing objects: 100% (16/16), done.        
remote: Total 23 (delta 7), reused 9 (delta 6), pack-reused 1        
From https://github.com/python/cpython
 * branch                  main       -> FETCH_HEAD
Note: switching to 'e28477f214276db941e715eebc8cdfb96c1207d9'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by switching back to a branch.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -c with the switch command. Example:

  git switch -c <new-branch-name>

Or undo this operation with:

  git switch -

Turn off this advice by setting config variable advice.detachedHead to false

HEAD is now at e28477f214 GH-117108: Change the size of the GC increment to about 1% of the total heap size. (GH-117120)
Switched to and reset branch 'main'

configure: WARNING: pkg-config is missing. Some dependencies may not be detected correctly.

… 1% of the total heap size. (pythonGH-117120)" Trying to compare perf of head with pre-incremental-GC. This reverts commit e28477f.

encukou · 2024-03-25T12:08:03Z

Since this PR was merged, many buildbots started consistently failing in test_multiprocessing tests. For example: https://buildbot.python.org/all/#/builders/725/builds/7475

I'm not sure this can be fixed quickly. If it can't, we'll need to revert the feature.

markshannon · 2024-03-25T13:19:11Z

#117213 should fix it

…he total heap size. (pythonGH-117120)

vstinner · 2024-03-26T08:14:09Z

Since this PR was merged, many buildbots started consistently failing in test_multiprocessing tests. For example: https://buildbot.python.org/all/#/builders/725/builds/7475

FYI I created PR gh-117252 to track this failure to help triaging buildbot failures.

commit 9dae05ee59eeba0e67af2a46f2a2907c9f8d7e4a Author: Moshe Kaplan <[email protected]> Date: Mon Apr 1 15:53:00 2024 -0400 Docs: specify XML document name in xml.etree.elementtree example (#24223) commit fc2071687b708598264a3403b7f9104667c1092f Author: Matthew Davis <[email protected]> Date: Mon Apr 1 21:49:14 2024 +0200 Docs: add more links to PIPE in subprocess docs (#25416) commit fc8007ee3635db6ab73e132ebff987c910b6d538 Author: Barney Gale <[email protected]> Date: Mon Apr 1 20:37:41 2024 +0100 GH-117337: Deprecate `glob.glob0()` and `glob.glob1()`. (#117371) These undocumented functions are no longer used by `msilib`, so there's no reason to keep them around. commit c741ad3537193c63fe697a8f0316aecd45eeb9ba Author: Justin Turner Arthur <[email protected]> Date: Mon Apr 1 12:07:29 2024 -0500 gh-77714: Provide an async iterator version of as_completed (GH-22491) * as_completed returns object that is both iterator and async iterator * Existing tests adjusted to test both the old and new style * New test to ensure iterator can be resumed * New test to ensure async iterator yields any passed-in Futures as-is Co-authored-by: Serhiy Storchaka <[email protected]> Co-authored-by: Guido van Rossum <[email protected]> commit ddf814db744006e0f42328aa15ace97c9d8ad681 Author: Guido van Rossum <[email protected]> Date: Mon Apr 1 09:13:38 2024 -0700 Silence compiler warnings in gc.c (#117422) commit 179869af922252a0c1cef65fd2923856895e7d1b Author: Petr Viktorin <[email protected]> Date: Mon Apr 1 17:01:22 2024 +0200 gh-94808: Fix refcounting in PyObject_Print tests (GH-117421) commit dd44ab994b7262f0704d64996e0a1bc37b233407 Author: neonene <[email protected]> Date: Mon Apr 1 22:28:14 2024 +0900 gh-117142: ctypes: Unify meta tp slot functions (GH-117143) Integrates the following ctypes meta tp slot functions: * `CDataType_traverse()` into `CType_Type_traverse()`. * `CDataType_clear()` into `CType_Type_clear()`. * `CDataType_dealloc()` into `CType_Type_dealloc()`. * `CDataType_repeat()` into `CType_Type_repeat()`. commit 3de09cadde788065a4f2d45117e789c9353bbd12 Author: Steve (Gadget) Barnes <[email protected]> Date: Mon Apr 1 14:02:07 2024 +0100 gh-91565: Replace bugs.python.org links with Devguide/GitHub ones (GH-91568) Co-authored-by: Hugo van Kemenade <[email protected]> Co-authored-by: Oleg Iarygin <[email protected]> Co-authored-by: Petr Viktorin <[email protected]> Co-authored-by: Ezio Melotti <[email protected]> commit 90c3c68a658db6951b77a5be50088ec2f6adc8eb Author: MonadChains <[email protected]> Date: Mon Apr 1 13:52:25 2024 +0100 gh-94808:Improve coverage of PyObject_Print (GH-98749) commit 348cf6e0078eae156c503e8f61ef5e27ae28e57b Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Date: Mon Apr 1 11:14:37 2024 +0000 Bump mypy from 1.8.0 to 1.9.0 in /Tools (#117418) Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Alex Waygood <[email protected]> commit 9b403fb559bfce93a478937e0ef7e539a9a95283 Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Date: Mon Apr 1 11:05:14 2024 +0000 build(deps-dev): bump types-psutil from 5.9.5.20240205 to 5.9.5.20240316 in /Tools (#117417) Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Alex Waygood <[email protected]> commit 93c7d9d17b571b6a181af7c02830d29819535c35 Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Date: Mon Apr 1 11:38:38 2024 +0100 build(deps-dev): bump types-setuptools from 69.1.0.20240301 to 69.2.0.20240317 in /Tools (#117419) Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> commit 3bb12e407c183946471272f8aee098e54e62a333 Author: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Date: Mon Apr 1 09:54:33 2024 +0000 build(deps): bump actions/add-to-project from 0.6.0 to 1.0.0 (#117415) Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> commit 56e99307c49adcc6df355f8070229371c97d654f Author: Adorilson Bezerra <[email protected]> Date: Sun Mar 31 23:34:54 2024 +0100 Doc: printf-style library/stdtype improvements (#16741) commit 18e12641a61a88f7d08b2114ebe965892c6661c5 Author: Raymond Hettinger <[email protected]> Date: Sun Mar 31 16:09:22 2024 -0500 gh-117387 Remove hash mark from introductory text (#117409) commit a32d6939486d7f90ee57e215077f6116e19de24d Author: Deborah <[email protected]> Date: Sun Mar 31 22:11:48 2024 +0200 gh-102190: Add additional zipfile `pwd=` arg docstrings (gh-102195) This just documents the parameter that already exists. --------- Co-authored-by: Gregory P. Smith <[email protected]> Co-authored-by: Erlend E. Aasland <[email protected]> commit 262445358e21c56d7c68e3ee76c13e469d2ea348 Author: Shantanu <[email protected]> Date: Sun Mar 31 12:02:48 2024 -0700 Link to the Python type system specification (#117400) commit 752e18389ed03087b51b38eac9769ef8dfd167b7 Author: Barney Gale <[email protected]> Date: Sun Mar 31 19:14:48 2024 +0100 GH-114575: Rename `PurePath.pathmod` to `PurePath.parser` (#116513) And rename the private base class from `PathModuleBase` to `ParserBase`. commit bfc57d43d8766120ba0c8f3f6d7b2ac681a81d8a Author: Sam Gross <[email protected]> Date: Fri Mar 29 18:58:08 2024 -0400 gh-117303: Don't detach in `PyThreadState_DeleteCurrent()` (#117304) This fixes a crash in `test_threading.test_reinit_tls_after_fork()` when running with the GIL disabled. We already properly handle the case where the thread state is `_Py_THREAD_ATTACHED` in `tstate_delete_common()` -- we just need to remove an assertion. Keeping the thread attached means that a stop-the-world pause, such as for a `fork()`, won't commence until we remove our thread state from the interpreter's linked list. This prevents a crash when the child process tries to clean up the dead thread states. commit 05e0b67a43c5c1778dc2643c8b7c12864e135999 Author: Erlend E. Aasland <[email protected]> Date: Fri Mar 29 21:23:28 2024 +0100 gh-116664: In _warnings.c, make filters_version access thread-safe (#117374) - assert that the lock is held in already_warned() - protect 'filters_version' increment in warnings_filters_mutated_impl() commit 019143fecbfc26e69800d28d2a9e3392a051780b Author: Jason R. Coombs <[email protected]> Date: Fri Mar 29 16:06:09 2024 -0400 gh-117348: Refactored RawConfigParser._read for similicity and comprehensibility (#117372) * Extract method for _read_inner, reducing complexity and indentation by 1. * Extract method for _raise_all and yield ParseErrors from _read_inner. Reduces complexity by 1 and reduces touch points for handling errors in _read_inner. * Prefer iterators to splat expansion and literal indexing. * Extract method for _strip_comments. Reduces complexity by 7. * Model the file lines in a class to encapsulate the comment status and cleaned value. * Encapsulate the read state as a dataclass * Extract _handle_continuation_line and _handle_rest methods. Reduces complexity by 8. * Reindent * At least for now, collect errors in the ReadState * Check for missing section header separately. * Extract methods for _handle_header and _handle_option. Reduces complexity by 6. * Remove unreachable code. Reduces complexity by 4. * Remove unreachable branch * Handle error condition early. Reduces complexity by 1. * Add blurb * Move _raise_all to ParsingError, as its behavior is most closely related to the exception class and not the reader. * Split _strip* into separate methods. * Refactor _strip_full to compute the strip just once and use 'not any' to determine the factor. * Replace use of 'sys.maxsize' with direct computation of the stripped value. * Extract has_comments as a dynamic property. * Implement clean as a cached property. * Model comment prefixes in the RawConfigParser within a prefixes namespace. * Use a regular expression to search for the first match. Avoids mutating variables and tricky logic and over-computing all of the starts when only the first is relevant. commit 01bd74eadbc4ff839d39762fae6366f50c1e116e Author: Sam Gross <[email protected]> Date: Fri Mar 29 15:33:06 2024 -0400 gh-117300: Use stop the world to make `sys._current_frames` and `sys._current_exceptions` thread-safe. (#117301) This adds a stop the world pause to make the two functions thread-safe when the GIL is disabled in the free-threaded build. Additionally, the main test thread may call `sys._current_exceptions()` as soon as `g_raised.set()` is called. The background thread may not yet reach the `leave_g.wait()` line. commit 94c97423a9c4969f8ddd4a3aa4aacb99c4d5263d Author: Guido van Rossum <[email protected]> Date: Fri Mar 29 11:31:09 2024 -0700 Fix broken format in error for bad input in summarize_stats.py (#117375) When you pass the script a non-existent input file, you get a TypeError instead of the intended ValueError. commit 5d21d884b6ffa45dac50a5f9a07c41356a8478b4 Author: mpage <[email protected]> Date: Fri Mar 29 10:42:02 2024 -0700 gh-111926: Avoid locking in PyType_IsSubtype (#117275) Read the MRO in a thread-unsafe way in `PyType_IsSubtype` to avoid locking. Fixing this is tracked in #117306. The motivation for this change is in support of making weakrefs thread-safe in free-threaded builds: `WeakValueDictionary` uses a special dictionary function, `_PyDict_DelItemIf` to remove dead weakrefs from the dictionary. `_PyDict_DelItemIf` removes a key if a user supplied predicate evaluates to true for the value associated with the key. Crucially for the `WeakValueDictionary` use case, the predicate evaluation + deletion sequence is atomic, provided that the predicate doesn’t suspend. The predicate used by `WeakValueDictionary` includes a subtype check, which we must ensure doesn't suspend in free-threaded builds. commit 19c1dd60c5b53fb0533610ad139ef591294f26e8 Author: Sam Gross <[email protected]> Date: Fri Mar 29 13:35:43 2024 -0400 gh-117323: Make `cell` thread-safe in free-threaded builds (#117330) Use critical sections to lock around accesses to cell contents. The critical sections are no-ops in the default (with GIL) build. commit 397d88db5e9ab2a43de3fdf5f8b973a949edc405 Author: Sam Gross <[email protected]> Date: Fri Mar 29 13:34:04 2024 -0400 gh-117344: Skip flaky tests in free-threaded build (#117355) The tests are not reliable with the GIL disabled. In theory, they can fail with the GIL enabled too, but the failures are much more likely with the GIL disabled. commit f05fb2e65c2dffdfae940f2707765c4994925205 Author: Sam Gross <[email protected]> Date: Fri Mar 29 13:33:04 2024 -0400 gh-112529: Don't untrack tuples or dicts with zero refcount (#117370) The free-threaded GC sometimes sees objects with zero refcount. This can happen due to the delay in merging biased reference counting fields, and, in the future, due to deferred reference counting. We should not untrack these objects or they will never be collected. This fixes the refleaks in the free-threaded build. commit ddf95b5f16031cdbd0d728e55eb06dff002a8678 Author: Erlend E. Aasland <[email protected]> Date: Fri Mar 29 18:26:06 2024 +0100 gh-116664: Fix unused var warnings in _warnings.c in non-free-threaded builds (#117373) The warnings were introduced by commit c1712ef06. commit 0fa571dbcdf19b541276cb00bb929381930467b2 Author: Tian Gao <[email protected]> Date: Fri Mar 29 09:02:01 2024 -0700 Refactor pdb executable targets (#112570) Co-authored-by: Jason R. Coombs <[email protected]> commit 54f7e14500471d1c46fb553adb3ca24cd1fef084 Author: Pedro Lacerda <[email protected]> Date: Fri Mar 29 12:05:00 2024 -0300 gh-66449: configparser: Add support for unnamed sections (#117273) Co-authored-by: Jason R. Coombs <[email protected]> commit d9cfe7e565a6e2dc15747a904736264e31a10be4 Author: Nikita Sobolev <[email protected]> Date: Fri Mar 29 14:14:25 2024 +0300 gh-117166: Ignore empty and temporary dirs in `test_makefile` (#117190) commit 35b6c4a4da201a947b2ceb96ae4c0d83d4d2df4f Author: Victor Stinner <[email protected]> Date: Fri Mar 29 11:25:17 2024 +0100 gh-117347: Fix test_clinic side effects (#117363) Save/restore converters in ClinicWholeFileTest and ClinicExternalTest. commit 7e2fef865899837c47e91ef0180fa59eb03e840b Author: neonene <[email protected]> Date: Fri Mar 29 18:40:48 2024 +0900 gh-117142: ctypes: Migrate global vars to module state (GH-117189) commit 2e9be80c99f635c2f7761e8356b0260922d6e7a6 Author: Gregory P. Smith <[email protected]> Date: Thu Mar 28 17:58:37 2024 -0700 Fix reversed assertRegex checks in test_ssl. (#117351) commit 8eec7ed714e65d616573b7331780b0aa43c6ed6a Author: 傅立业（Chris Fu） <[email protected]> Date: Fri Mar 29 08:19:20 2024 +0800 gh-117110: Fix subclasses of typing.Any with custom constructors (#117111) commit a17f313e3958e825db9a83594c8471a984316536 Author: Christopher Chianelli <[email protected]> Date: Thu Mar 28 18:26:56 2024 -0400 gh-117339: Use NULL instead of None for LOAD_SUPER_ATTR in dis docs (GH-117343) commit 26d328b2ba26374fb8d9ffe8215ecef7c5e3f7a2 Author: Michael Droettboom <[email protected]> Date: Thu Mar 28 18:23:08 2024 -0400 GH-117121: Add pystats to JIT builds (GH-117346) commit 14f1ca7d5363386163839b31ce987423daecc3de Author: Nice Zombies <[email protected]> Date: Thu Mar 28 22:20:08 2024 +0100 gh-117335: Handle non-iterables for `ntpath.commonpath` (GH-117336) commit 18cf239e39e25e6cef50ecbb7f197a82f8920ff5 Author: Brandt Bucher <[email protected]> Date: Thu Mar 28 14:02:34 2024 -0700 Increase the JIT CI timeouts to 75 minutes (GH-117342) commit 29829b58a8328a7c2ccacaa74c1d7d120a5e5ca5 Author: Malcolm Smith <[email protected]> Date: Thu Mar 28 19:59:12 2024 +0000 gh-117294: Report DocTestCase as skipped if all examples in the doctest are skipped (GH-117297) commit efcc96844e7c66fcd6c23ac2d557ca141614ce9a Author: Tian Gao <[email protected]> Date: Thu Mar 28 11:23:29 2024 -0700 gh-69201: Separate stdout and stderr stream in test_pdb (#117308) commit 6702d2bf6edcd5b5415e17837383623b9d76a5b8 Author: Victor Stinner <[email protected]> Date: Thu Mar 28 17:40:58 2024 +0100 gh-114331: Skip decimal test_maxcontext_exact_arith on s390x (#117326) commit c1712ef066321c01bf09cba3f22fc474b5b8dfa7 Author: Erlend E. Aasland <[email protected]> Date: Thu Mar 28 16:05:08 2024 +0100 gh-116664: Make module state Py_SETREF's in _warnings thread-safe (#116959) Mark the swap operations as critical sections. Add an internal Py_BEGIN_CRITICAL_SECTION_MUT API that takes a PyMutex pointer instead of a PyObject pointer. commit 9a388b9a64927c372d85f0eaec3de9b7320a6fb5 Author: Joachim Wuttke <[email protected]> Date: Thu Mar 28 14:43:07 2024 +0100 bpo-43848: explain optional argument mtime in gzip.py. (GH-25410) Co-authored-by: Jelle Zijlstra <[email protected]> commit 8dbfdb2957a7baade3a88661517f163ad694c39f Author: Sam Gross <[email protected]> Date: Thu Mar 28 09:28:39 2024 -0400 gh-110481: Fix biased reference counting queue initialization. (#117271) The biased reference counting queue must be initialized from the bound (active) thread because it uses `_Py_ThreadId()` as the key in a hash table. commit 9a1e55b8c5723206116f7016921be3937ef2f4e5 Author: Chris Markiewicz <[email protected]> Date: Thu Mar 28 06:59:31 2024 -0400 gh-117178: Recover lazy loading of self-referential modules (#117179) commit 4c71d51a4b7989fc8754ba512c40e21666f9db0d Author: Jelle Zijlstra <[email protected]> Date: Thu Mar 28 04:30:31 2024 -0600 gh-117266: Fix crashes on user-created AST subclasses (GH-117276) Fix crashes on user-created AST subclasses commit 8cb7d7ff86a1a2d41195f01ba4f218941dd7308c Author: Gregory P. Smith <[email protected]> Date: Thu Mar 28 03:11:58 2024 -0700 gh-117310: Remove extra DECREF on "no ciphers" error path in `_ssl._SSLContext` constructor (#117309) Remove extra self DECREF on ssl "no ciphers" error path. This doesn't come up in practice because nobody links against a broken OpenSSL library that provides nothing. commit 6c8ac8a32fd6de1960526561c44bc5603fab0f3e Author: Erlend E. Aasland <[email protected]> Date: Thu Mar 28 09:40:37 2024 +0100 gh-116303: Handle disabled test modules in test.support helpers (#116482) Make sure test.support helpers skip iso. failing if test extension modules are disabled. Also log TEST_MODULES in test.pythoninfo. commit 0f27672c5002de96c9f1228b12460d5ce3f1d190 Author: Russell Keith-Magee <[email protected]> Date: Thu Mar 28 16:13:13 2024 +0800 gh-114099: Add documentation for iOS platform (GH-117057) Co-authored-by: Hugo van Kemenade <[email protected]> Co-authored-by: Jacob Coffee <[email protected]> Co-authored-by: Malcolm Smith <[email protected]> Co-authored-by: Ned Deily <[email protected]> commit f006338017cfbf846e8f7391b9ee5f69df8dc620 Author: Russell Keith-Magee <[email protected]> Date: Thu Mar 28 15:59:33 2024 +0800 gh-114099: Additions to standard library to support iOS (GH-117052) Co-authored-by: Hugo van Kemenade <[email protected]> Co-authored-by: Malcolm Smith <[email protected]> Co-authored-by: Ned Deily <[email protected]> commit b44898299a2ed97045c270f6474785da2ff07ced Author: Tim Hatch <[email protected]> Date: Wed Mar 27 23:54:51 2024 -0700 gh-89739: gh-77140: Support zip64 in zipimport (GH-94146) * Reads zip64 files as produced by the zipfile module * Include tests (somewhat slow, however, because of the need to create "large" zips) * About the same amount of strictness reading invalid zip files as zipfile has * Still works on files with prepended data (like pex) There are a lot more test cases at https://github.com/thatch/zipimport64/ that give me confidence that this works for real-world files. Fixes #89739 and #77140. --------- Co-authored-by: Itamar Ostricher <[email protected]> Reviewed-by: Gregory P. Smith <[email protected]> commit 2cedd25c14d3acfdcb5e8ee55132ce3e334ab8fe Author: Illia Volochii <[email protected]> Date: Thu Mar 28 08:46:01 2024 +0200 Revert "gh-116886: Temporarily disable CIfuzz (memory) (GH-117018)" (GH-117289) This reverts commit 1ab0d0b1167d78bf19661a3b5e533a2b68a57604. This reverts #117018. I expect the issue to be fixed based on https://github.com/google/oss-fuzz/pull/11708#issuecomment-2006442396 and https://github.com/actions/runner-images/issues/9491. commit eefff682f09394fe4f18b7d7c6ac4c635caadd02 Author: Malcolm Smith <[email protected]> Date: Wed Mar 27 22:11:44 2024 +0000 gh-108277: Make test_os tolerate 10 ms diff for timerfd on Android emulators (#117223) commit 7aa89bc43e0bcf49eee5a39b5a7ba8f996f20d00 Author: Victor Stinner <[email protected]> Date: Wed Mar 27 23:10:14 2024 +0100 gh-113317: Change how Argument Clinic lists converters (#116853) * Add a new create_parser_namespace() function for PythonParser to pass objects to executed code. * In run_clinic(), list converters using 'converters' and 'return_converters' dictionarties. * test_clinic: add 'object()' return converter. * Use also create_parser_namespace() in eval_ast_expr(). Co-authored-by: Erlend E. Aasland <[email protected]> commit 669ef49c7d42f35da6f7ee280102353b9b37f83e Author: Seth Michael Larson <[email protected]> Date: Wed Mar 27 16:56:14 2024 -0500 gh-99108: Update and check HACL* version information (GH-117295) * Update and check HACL* version information commit 262fb911ab7df8e890ebd0efb0773c3e0b5a757f Author: Irit Katriel <[email protected]> Date: Wed Mar 27 17:38:19 2024 +0000 gh-117288: Allocate fewer label IDs in _PyCfg_ToInstructionSequence (#117290) commit 74c8568d07719529b874897598d8b3bc25ff0434 Author: Malcolm Smith <[email protected]> Date: Wed Mar 27 16:53:27 2024 +0000 gh-71042: Add `platform.android_ver` (#116674) commit ce00de4c8cd39816f992e749c1074487d93abe9d Author: Hugo van Kemenade <[email protected]> Date: Wed Mar 27 16:46:35 2024 +0200 gh-117225: doctest: only print "and X failed" when non-zero, don't pluralise "1 items" (#117228) commit 92397d5ead38dde4154e70d00f24973bcf2a925a Author: Raymond Hettinger <[email protected]> Date: Wed Mar 27 09:04:32 2024 -0500 Add statistics recipe for sampling from an estimated probability density distribution (#117221) commit b3e8c78ed7aa9bbd1084375587b99200c687cec9 Author: Tian Gao <[email protected]> Date: Tue Mar 26 18:20:12 2024 -0700 gh-113548: Allow CLI arguments to `pdb -m` (#113557) commit 48c0b05cf0dd2db275bd4653f84aa36c22bddcd2 Author: Adorilson Bezerra <[email protected]> Date: Tue Mar 26 19:08:08 2024 +0000 Change links on the index page (#117230) commit af1b0e94400d1bf732466d675054df8cf7dfb62d Author: AN Long <[email protected]> Date: Wed Mar 27 02:26:48 2024 +0800 gh-104242: Enable test_is_char_device_true in pathlib test on all platform (GH-116983) commit 79be75735c9d77972112cecc8d7e1af28c176ed0 Author: Irit Katriel <[email protected]> Date: Tue Mar 26 15:18:17 2024 +0000 gh-115775: Compiler adds __static_attributes__ field to classes (#115913) commit 70969d53a77a8a190c40a30419e772bc874a4f62 Author: Antonio <[email protected]> Date: Tue Mar 26 15:10:29 2024 +0100 gh-97901 add missing text/rtf to mimetypes (GH-97902) Co-authored-by: Noam Cohen <[email protected]> commit 4ec347760f98b156c6a2d42ca397af6b0b6ecc50 Author: AN Long <[email protected]> Date: Tue Mar 26 22:09:57 2024 +0800 gh-115538: Use isolate mode when running venv test_multiprocessing_recursion() (#117116) Co-authored-by: Victor Stinner <[email protected]> commit 743f2c68f478279e1e56577fe95a0ed112b9abc5 Author: Hugo van Kemenade <[email protected]> Date: Tue Mar 26 16:09:09 2024 +0200 pre-commit: add `check-case-conflict` and `check-merge-conflict` (#117259) commit 4abca7e1e7e2764faf20c7e677ea5c9ea9dbffe2 Author: Paulo Neves <[email protected]> Date: Tue Mar 26 13:37:50 2024 +0100 gh-98966: Handle stdout=subprocess.STDOUT (GH-98967) Explicitly handle the case where stdout=STDOUT as otherwise the existing error handling gets confused and reports hard to understand errors. Signed-off-by: Paulo Neves <[email protected]> commit 9654daf793b534b44a831c80f43505ab9e380f1f Author: Serhiy Storchaka <[email protected]> Date: Tue Mar 26 13:26:45 2024 +0200 gh-66543: Fix mimetype.guess_type() (GH-117217) Fix parsing of the following corner cases: * URLs with only a host name * URLs containing a fragment * URLs containing a query * filenames with only a UNC sharepoint on Windows Co-authored-by: Dong-hee Na <[email protected]> commit 8bef34f625e21886b1c64544c060e19ee2e229bf Author: Mark Shannon <[email protected]> Date: Tue Mar 26 11:11:42 2024 +0000 GH-117108: Set the "old space bit" to "visited" for all young objects (#117213) Change old space bit of young objects from 0 to gcstate->visited_space. This ensures that any object created *and* collected during cycle GC has the bit set correctly. commit bf82f77957a31c3731b4ec470c406f5708ca9ba3 Author: Mark Shannon <[email protected]> Date: Tue Mar 26 09:35:11 2024 +0000 GH-116422: Tier2 hot/cold splitting (GH-116813) Splits the "cold" path, deopts and exits, from the "hot" path, reducing the size of most jitted instructions, at the cost of slower exits. commit 61599a48f52e951d8813877ee311d2a830ba2cd8 Author: Pablo Galindo Salgado <[email protected]> Date: Tue Mar 26 09:30:46 2024 +0000 bpo-24612: Improve syntax error for 'not' after an operator (GH-28170) Co-authored-by: Lysandros Nikolaou <[email protected]> commit 771902c257372e6c4df1ead4e8c46308561db7a7 Author: Hugo van Kemenade <[email protected]> Date: Tue Mar 26 11:13:32 2024 +0200 gh-83845: Add tests for operator module (#115883) Co-authored-by: Karthikeyan Singaravelan <[email protected]> commit ea9a296fce2f786b4cf43c7924e5de01061f27ca Author: yevgeny hong <[email protected]> Date: Tue Mar 26 16:45:43 2024 +0900 gh-115627: Fix PySSL_SetError handling SSL_ERROR_SYSCALL (GH-115628) Python 3.10 changed from using SSL_write() and SSL_read() to SSL_write_ex() and SSL_read_ex(), but did not update handling of the return value. Change error handling so that the return value is not examined. OSError (not EOF) is now returned when retval is 0. According to *recent* man pages of all functions for which we call PySSL_SetError, (in OpenSSL 3.0 and 1.1.1), their return value should be used to determine whether an error happened (i.e. if PySSL_SetError should be called), but not what kind of error happened (so, PySSL_SetError shouldn't need retval). To get the error, we need to use SSL_get_error. Co-authored-by: Serhiy Storchaka <[email protected]> Co-authored-by: Petr Viktorin <[email protected]> commit d52bdfb19fadd7614a0e5abaf68525fc7300e841 Author: Victor Stinner <[email protected]> Date: Tue Mar 26 08:35:59 2024 +0100 gh-83434: Disable XML in regrtest when -R option is used (#117232) commit 9f74e86c78853c101a23e938f8e32ea838d8f62e Author: Sebastian Pipping <[email protected]> Date: Tue Mar 26 02:48:27 2024 +0100 gh-117187: Fix XML tests for vanilla Expat <2.6.0 (GH-117203) This fixes XML unittest fallout from the https://github.com/python/cpython/issues/115398 security fix. When configured using `--with-system-expat` on systems with older pre 2.6.0 versions of libexpat, our unittests were failing. * sax|etree: Simplify Expat version guard where simplifiable Idea by Matěj Cepl * sax|etree: Fix reparse deferral tests for vanilla Expat <2.6.0 This *does not fix* the case of distros with an older version of libexpat with the 2.6.0 feature backported as a security fix. (Ubuntu is a known example of this with its libexpat1 2.5.0-2ubunutu0.1 package) commit 872e212378ef86392069034afd80bb53896fd93d Author: Jonathan Protzenko <[email protected]> Date: Mon Mar 25 17:35:26 2024 -0700 gh-99108: Refresh HACL*; update modules accordingly; fix namespacing (GH-117237) Pulls in a new update from https://github.com/hacl-star/hacl-star and fixes our C "namespacing" done by `Modules/_hacl/refresh.sh`. commit 8945b7ff55b87d11c747af2dad0e3e4d631e62d6 Author: Eric V. Smith <[email protected]> Date: Mon Mar 25 19:59:14 2024 -0400 gh-109870: Dataclasses: batch up exec calls (gh-110851) Instead of calling `exec()` once for each function added to a dataclass, only call `exec()` once per dataclass. This can lead to speed improvements of up to 20%. commit 7ebad77ad65ab4d5d8d0c333256a882262cec189 Author: Raymond Hettinger <[email protected]> Date: Mon Mar 25 18:49:44 2024 -0500 Sync main docs and docstring for median_grouped(). (gh-117214) commit 0821923aa979a72464c5da8dfa53a719bba5801c Author: Nice Zombies <[email protected]> Date: Mon Mar 25 23:55:11 2024 +0100 gh-117114: Make os.path.isdevdrive available on all platforms (GH-117115) commit c2276176d543a2fc2d57709c2787f99850fbb073 Author: Adorilson Bezerra <[email protected]> Date: Mon Mar 25 22:34:20 2024 +0000 Add information about negative indexes to sequence datamodel doc (#110903) Co-authored by Terry Jan Reedy commit 23e4f80ce2a2bac50acd1785e791316d5b578b8d Author: Mark Shannon <[email protected]> Date: Mon Mar 25 20:43:51 2024 +0000 A few minor tweaks to get stats working and compiling cleanly. (#117219) Fixes a compilation error when configured with `--enable-pystats`, an array size issue, and an unused variable. commit 507896d97dcff2d7999efa264b29d9003c525c49 Author: Victor Stinner <[email protected]> Date: Mon Mar 25 17:32:20 2024 +0100 gh-116936: Add PyType_GetModuleByDef() to the limited C API (#116937) commit 0c1a42cf9c8cd0d4534d5c1d58f118ce7c5c446e Author: Serhiy Storchaka <[email protected]> Date: Mon Mar 25 17:32:11 2024 +0200 gh-87193: Support bytes objects with refcount > 1 in _PyBytes_Resize() (GH-117160) Create a new bytes object and destroy the old one if it has refcount > 1. commit 01e7405da400e8997f8964d06cc414045e144681 Author: Tian Gao <[email protected]> Date: Mon Mar 25 08:18:09 2024 -0700 gh-112948: Make pdb completion similar to repl completion (#112950) commit 9db2a8f914ad59019d448cecc43b6d45f46424a0 Author: Raymond Hettinger <[email protected]> Date: Mon Mar 25 09:26:42 2024 -0500 Minor markup and grammar fixes in the statistics docs (gh-117216) commit eebea7e515462b503632ada74923ec3246599c9c Author: Kirill Podoprigora <[email protected]> Date: Sun Mar 24 20:34:55 2024 +0200 gh-117176: Fix compiler warning in Python/optimizer_bytecodes.c (GH-117199) commit 83485a095363dad6c97b19af2826ca0c34343bfc Author: Totally a booplicate <[email protected]> Date: Sun Mar 24 18:48:40 2024 +0300 gh-112571: Move fish venv activation script into the common folder (GH-117169) pythongh-112571: allow using fish venv activation script on windows The fish shell can be used on windows under cygwin or msys2. This change moves the script to the common folder so the venv module will install it on both posix and nt systems (like the bash script). commit 78a651fd7fbe7a3d1702e40f4cbfa72d87241ef0 Author: Terry Jan Reedy <[email protected]> Date: Sun Mar 24 11:38:34 2024 -0400 gh-117194: Properly format 'base64' header in What's New (#117198) It needs 6, not 3, '-'s. commit f267d5bf2a99fbeb26a720d1c87c1f0557424b14 Author: Kerim Kabirov <[email protected]> Date: Sun Mar 24 14:59:14 2024 +0100 GH-115986 Docs: promote pprint.pp usage as a default (#116614) Co-authored-by: Hugo van Kemenade <[email protected]> commit 39df7732178c8e8f75b12f069a3dbc1715c99995 Author: LilKS <[email protected]> Date: Sun Mar 24 11:01:07 2024 +0100 gh-101760: Improve the imaplib.IMAP4 example (#101764) Co-authored-by: Adam Turner <[email protected]> commit a1e948edba9ec6ba61365429857f7a087c5edf51 Author: Raymond Hettinger <[email protected]> Date: Sun Mar 24 11:35:58 2024 +0200 Add cumulative option for the new statistics.kde() function. (#117033) commit d610d821fd210dce63a1132c274ffdf8acc510bc Author: Irit Katriel <[email protected]> Date: Sat Mar 23 22:32:33 2024 +0000 gh-112383: teach dis how to interpret ENTER_EXECUTOR (#117171) commit 6c83352bfe78a7d567c8d76257df6eb91d5a7245 Author: Ken Jin <[email protected]> Date: Sun Mar 24 06:19:17 2024 +0800 gh-117180: Complete call sequence when trace stack overflow (GH-117184) --------- Co-authored-by: Peter Lazorchak <[email protected]> Co-authored-by: Guido van Rossum <[email protected]> Co-authored-by: Guido van Rossum <[email protected]> commit f11d0d8be8af28e1368c3c7c116218cf65ddf93e Author: Erik Soma <[email protected]> Date: Sat Mar 23 11:39:35 2024 -0400 gh-91227: Ignore ERROR_PORT_UNREACHABLE in proactor recvfrom() (#32011) commit 9967b568edd2e35b0415c14c7242f3ca2c0dc03d Author: Victor Stinner <[email protected]> Date: Sat Mar 23 13:01:20 2024 +0100 gh-117008: Fix functools test_recursive_pickle() (#117009) Use support.infinite_recursion() in test_recursive_pickle() of test_functools to prevent a stack overflow on "ARM64 Windows Non-Debug" buildbot. Lower Py_C_RECURSION_LIMIT to 1,000 frames on Windows ARM64. commit 72eea512b88f8fd68b7258242c37da963ad87360 Author: Barney Gale <[email protected]> Date: Fri Mar 22 19:14:09 2024 +0000 GH-106747: Document another difference between `glob` and `pathlib`. (#116518) Document that `path.glob()` might return *path*, whereas `glob.glob(root_dir=path)` will never return an empty string corresponding to *path*. commit e28477f214276db941e715eebc8cdfb96c1207d9 Author: Mark Shannon <[email protected]> Date: Fri Mar 22 18:43:25 2024 +0000 GH-117108: Change the size of the GC increment to about 1% of the total heap size. (GH-117120) commit e2e0b4b4b92694ba894e02b4a66fd87c166ed10f Author: Serhiy Storchaka <[email protected]> Date: Fri Mar 22 20:19:10 2024 +0200 gh-113024: C API: Add PyObject_GenericHash() function (GH-113025) commit 567ab3bd15398c8c7b791f3e376ae3e3c0bbe079 Author: Serhiy Storchaka <[email protected]> Date: Fri Mar 22 20:08:00 2024 +0200 gh-117084: Fix ZIP file extraction for directory entry names with backslashes on Windows (GH-117129) commit 5a78f6e798d5c2af1dba2df6c9f1f1e5aac02a86 Author: Serhiy Storchaka <[email protected]> Date: Fri Mar 22 20:03:48 2024 +0200 gh-117134: Microoptimize glob() for include_hidden=True (GH-117135) commit 00baaa21de229a6db80ff2b84c2fd6ad1999a24c Author: Vinay Sajip <[email protected]> Date: Fri Mar 22 17:25:51 2024 +0000 [docs] Fix typo in docstring and add example to logging cookbook. (GH-117157) commit 40d75c2b7f5c67e254d0a025e0f2e2c7ada7f69f Author: Jakub Stasiak <[email protected]> Date: Fri Mar 22 17:49:56 2024 +0100 GH-113171: Fix "private" (non-global) IP address ranges (GH-113179) * GH-113171: Fix "private" (really non-global) IP address ranges The _private_networks variables, used by various is_private implementations, were missing some ranges and at the same time had overly strict ranges (where there are more specific ranges considered globally reachable by the IANA registries). This patch updates the ranges with what was missing or otherwise incorrect. I left 100.64.0.0/10 alone, for now, as it's been made special in [1] and I'm not sure if we want to undo that as I don't quite understand the motivation behind it. The _address_exclude_many() call returns 8 networks for IPv4, 121 networks for IPv6. [1] https://github.com/python/cpython/issues/61602 commit 3be9b9d8722696b95555937bb211dc4cda714d56 Author: Steve Dower <[email protected]> Date: Fri Mar 22 15:00:50 2024 +0000 Fix get_packagefamilyname helper function on Windows 32-bit (GH-117153) commit 63d6f2623ef2aa90f51c6a928b96845b9b380d89 Author: NGRsoftlab <[email protected]> Date: Fri Mar 22 14:25:38 2024 +0300 gh-117068: Remove useless code in bytesio.c:resize_buffer() (GH-117069) Co-authored-by: i.khabibulin <[email protected]> commit 42ae924d278c48a719fb0ab86357f3235a9f7ab9 Author: Petr Viktorin <[email protected]> Date: Fri Mar 22 10:42:18 2024 +0100 gh-117127: glob tests: Reopen dir_fd to pick up directory changes (GH-117128) commit 8383915031942f441f435a5ae800790116047b80 Author: Tim Peters <[email protected]> Date: Thu Mar 21 22:27:25 2024 -0500 GH-116939: Rewrite binarysort() (#116940) Rewrote binarysort() for clarity. Also changed the signature to be more coherent (it was mixing sortslice with raw pointers). No change in method or functionality. However, I left some experiments in, disabled for now via `#if` tricks. Since this code was first written, some kinds of comparisons have gotten enormously faster (like for lists of floats), which changes the tradeoffs. For example, plain insertion sort's simpler innermost loop and highly predictable branches leave it very competitive (even beating, by a bit) binary insertion when comparisons are very cheap, despite that it can do many more compares. And it wins big on runs that are already sorted (moving the next one in takes only 1 compare then). So I left code for a plain insertion sort, to make future experimenting easier. Also made the maximum value of minrun a `#define` (``MAX_MINRUN`) to make experimenting with that easier too. And another bit of `#if``-disabled code rewrites binary insertion's innermost loop to remove its unpredictable branch. Surprisingly, this doesn't really seem to help overall. I'm unclear on why not. It certainly adds more instructions, but they're very simple, and it's hard to be believe they cost as much as a branch miss. commit 97ba910e47ad298114800587979ce7beb0a705a3 Author: Guido van Rossum <[email protected]> Date: Thu Mar 21 18:27:48 2024 -0700 gh-108716:: Remove _PyStaticCode_Init/Fini (#117141) More deepfreeze cleanup. commit b3d25df8d38b79310587da54dbd88b06a16d4904 Author: Eric Snow <[email protected]> Date: Thu Mar 21 18:20:20 2024 -0600 gh-105716: Fix _PyInterpreterState_IsRunningMain() For Embedders (gh-117140) When I added _PyInterpreterState_IsRunningMain() and friends last year, I tried to accommodate applications that embed Python but don't call _PyInterpreterState_SetRunningMain() (not that they're expected to). That mostly worked fine until my recent changes in gh-117049, where the subtleties with the fallback code led to failures; the change ended up breaking test_tools.test_freeze, which exercises a basic embedding situation. The simplest fix is to drop the fallback code I originally added to _PyInterpreterState_IsRunningMain() (and later to _PyThreadState_IsRunningMain()). I've kept the fallback in the _xxsubinterpreters module though. I've also updated Py_FrozenMain() to call _PyInterpreterState_SetRunningMain(). commit c4bf58a14f162557038a1535ca22c52b49d81d7b Author: Thomas A Caswell <[email protected]> Date: Thu Mar 21 19:54:50 2024 -0400 gh-116745: Remove all internal usage of @LIBPYTHON@ (#116746) Replace with MODULE_LDFLAGS. commit 3ec57307e70ee6f42410e844d3399bbd598917ba Author: Malcolm Smith <[email protected]> Date: Thu Mar 21 23:52:29 2024 +0000 gh-71052: Add Android build script and instructions (#116426) commit 50f9b0b1e0fb181875751cef951351ed007b6397 Author: Victor Stinner <[email protected]> Date: Thu Mar 21 23:17:09 2024 +0100 gh-117061: Fix test_posix.test_sched_setaffinity() on RHEL9 (#117126) On RHEL9, sched_setaffinity(0, []) does not fail. commit 0907871d43bffb613cbd560224e1a9db13d06c06 Author: Ned Batchelder <[email protected]> Date: Thu Mar 21 15:47:09 2024 -0400 docs: fix over-linking in dataclasses.rst (#117005) commit 570a82d46abfebb9976961113fb0f8bb400ad182 Author: Guido van Rossum <[email protected]> Date: Thu Mar 21 12:37:41 2024 -0700 gh-117045: Add code object to function version cache (#117028) Changes to the function version cache: - In addition to the function object, also store the code object, and allow the latter to be retrieved even if the function has been evicted. - Stop assigning new function versions after a critical attribute (e.g. `__code__`) has been modified; the version is permanently reset to zero in this case. - Changes to `__annotations__` are no longer considered critical. (This fixes gh-109998.) Changes to the Tier 2 optimization machinery: - If we cannot map a function version to a function, but it is still mapped to a code object, we continue projecting the trace. The operand of the `_PUSH_FRAME` and `_POP_FRAME` opcodes can be either NULL, a function object, or a code object with the lowest bit set. This allows us to trace through code that calls an ephemeral function, i.e., a function that may not be alive when we are constructing the executor, e.g. a generator expression or certain nested functions. We will lose globals removal inside such functions, but we can still do other peephole operations (and even possibly [call inlining](https://github.com/python/cpython/pull/116290), if we decide to do it), which only need the code object. As before, if we cannot retrieve the code object from the cache, we stop projecting. commit c85d84166a84a5cb2d724012726bad34229ad24e Author: Will Childs-Klein <[email protected]> Date: Thu Mar 21 14:16:36 2024 -0500 gh-116333: Relax error string text expectations in SSL-related tests (GH-116334) * Relax error string text expectations in SSL-related tests As suggested [here][1], this change relaxes the OpenSSL error string text expectations in a number of tests. This was specifically done in support of more easily building CPython [AWS-LC][2], but because AWS-LC is a fork of [BoringSSL][3], it should increase compatibility with that library as well. In addition to the error string relaxations, we also add some guards around the `tls-unique` channel binding being used with TLSv1.3, as that feature (described in [RFC 6929][4]) is [not defined][5] for TLSv1.3. [1]: https://discuss.python.org/t/support-building-ssl-and-hashlib-modules-against-aws-lc/44505/4 [2]: https://github.com/aws/aws-lc [3]: https://github.com/google/boringssl [4]: https://datatracker.ietf.org/doc/html/rfc5929#section-3 [5]: https://datatracker.ietf.org/doc/html/rfc8446#appendix-C.5 commit 1f72fb5447ef3f8892b4a7a6213522579c618e8e Author: Sam Gross <[email protected]> Date: Thu Mar 21 14:21:02 2024 -0400 gh-116522: Refactor `_PyThreadState_DeleteExcept` (#117131) Split `_PyThreadState_DeleteExcept` into two functions: - `_PyThreadState_RemoveExcept` removes all thread states other than one passed as an argument. It returns the removed thread states as a linked list. - `_PyThreadState_DeleteList` deletes those dead thread states. It may call destructors, so we want to "start the world" before calling `_PyThreadState_DeleteList` to avoid potential deadlocks. commit 50369e6c34d05222e5a0ec9443a9f7b230e83112 Author: Michael Droettboom <[email protected]> Date: Thu Mar 21 13:27:46 2024 -0400 gh-116996: Add pystats about _Py_uop_analyse_and_optimize (GH-116997) commit 617158e07811edfd6fd552a3d84b0beedd8f1d18 Author: Eric Snow <[email protected]> Date: Thu Mar 21 11:15:02 2024 -0600 gh-76785: Drop PyInterpreterID_Type (gh-117101) I added it quite a while ago as a strategy for managing interpreter lifetimes relative to the PEP 554 (now 734) implementation. Relatively recently I refactored that implementation to no longer rely on InterpreterID objects. Thus now I'm removing it. commit abdd1f938f08e536864532b2071f144515ecc88b Author: Victor Stinner <[email protected]> Date: Thu Mar 21 17:45:43 2024 +0100 gh-85283: Build _testconsole extension with limited C API (#117125) commit 8bea6c411d65cd987616b4ecdb86373e4f21f1c6 Author: Victor Stinner <[email protected]> Date: Thu Mar 21 17:07:00 2024 +0100 gh-115754: Add Py_GetConstant() function (#116883) Add Py_GetConstant() and Py_GetConstantBorrowed() functions. In the limited C API version 3.13, getting Py_None, Py_False, Py_True, Py_Ellipsis and Py_NotImplemented singletons is now implemented as function calls at the stable ABI level to hide implementation details. Getting these constants still return borrowed references. Add _testlimitedcapi/object.c and test_capi/test_object.py to test Py_GetConstant() and Py_GetConstantBorrowed() functions. commit 5a76d1be8ef371b75ca65166726923c249b5f615 Author: Eric Snow <[email protected]> Date: Thu Mar 21 10:06:35 2024 -0600 gh-105716: Update interp->threads.main After Fork (gh-117049) I missed this in gh-109921. We also update Py_Exit() to call _PyInterpreterState_SetNotRunningMain(), if necessary. commit bbee57fa8c318cb26d6c8651254927a1972c9738 Author: Eric Snow <[email protected]> Date: Thu Mar 21 09:56:12 2024 -0600 gh-76785: Clean Up Interpreter ID Conversions (gh-117048) Mostly we unify the two different implementations of the conversion code (from PyObject * to int64_t. We also drop the PyArg_ParseTuple()-style converter function, as well as rename and move PyInterpreterID_LookUp(). commit e728303532168efab7694c55c82ea19b18bf8385 Author: Sam Gross <[email protected]> Date: Thu Mar 21 10:01:16 2024 -0400 gh-116522: Stop the world before fork() and during shutdown (#116607) This changes the free-threaded build to perform a stop-the-world pause before deleting other thread states when forking and during shutdown. This fixes some crashes when using multiprocessing and during shutdown when running with `PYTHON_GIL=0`. This also changes `PyOS_BeforeFork` to acquire the runtime lock (i.e., `HEAD_LOCK(&_PyRuntime)`) before forking to ensure that data protected by the runtime lock (and not just the GIL or stop-the-world) is in a consistent state before forking. commit 1f8b24ef69896680d6ba6005e75e1cc79a744f9e Author: Malcolm Smith <[email protected]> Date: Thu Mar 21 13:20:57 2024 +0000 gh-71052: Implement `ctypes.util.find_library` on Android (GH-116379) commit d16c9d1278164f04778861814ebc87ed087511fc Author: Tian Gao <[email protected]> Date: Thu Mar 21 03:30:10 2024 -0700 gh-116987: Support class code objects in inspect.findsource() (GH-117025) commit 6547330f4e896c6748da23704b617e060e6cc68e Author: Adam Turner <[email protected]> Date: Thu Mar 21 03:49:10 2024 +0000 GH-109653: Defer import of ``importlib.metadata._adapters`` (#109829) * adapters * Add comments for deferred imports with links to rationale. * Add blurb --------- Co-authored-by: Jason R. Coombs <[email protected]> commit 667294d5b2ee812ebe0c9c1efd58e2006b61f827 Author: Jason R. Coombs <[email protected]> Date: Wed Mar 20 23:01:24 2024 -0400 gh-117089: Apply changes from importlib_metadata 7.1.0 (#117094) * Apply changes from importlib_metadata 7.1.0 * Include the data sources in the makefile (even though they're not needed) commit f4cc77d494ee0e10ed84ce369f0910c70a2f6d44 Author: Victor Stinner <[email protected]> Date: Thu Mar 21 00:06:24 2024 +0100 gh-116869: Enable -Werror in test_cext for Free Threading (#117106) Check for warnings, but don't enable the compiler flag -Werror=declaration-after-statement. commit 104602a6078564765b7b8f42888f8eaa37b129b1 Author: Victor Stinner <[email protected]> Date: Wed Mar 20 23:52:23 2024 +0100 gh-105927: Limit PyWeakref_GetRef() to limited C API 3.13 (#117091) commit 8ad88984200b2ccddc0a08229dd2f4c14d1a71fc Author: Jason R. Coombs <[email protected]> Date: Wed Mar 20 17:11:00 2024 -0400 gh-117089: Move importlib.metadata tests to their own package (#117092) * Ensure importlib.metadata tests do not leak references in sys.modules. * Move importlib.metadata tests to their own package for easier syncing with importlib_metadata. * Update owners and makefile for new directories. * Add blurb commit 7d446548ef53f6c3de1097c6d44cada6642ddc85 Author: Carol Willing <[email protected]> Date: Wed Mar 20 14:00:59 2024 -0700 Fix sort order for "locale encoding" glossary item (#115794) Co-authored-by: C.A.M. Gerlach <[email protected]> commit 63289b9dfbc7d87e81f1517422ee91b6b6d19531 Author: Mark Shannon <[email protected]> Date: Wed Mar 20 18:24:02 2024 +0000 GH-117066: Tier 2 optimizer: Don't throw away good traces if we can't optimize them perfectly. (GH-117067) commit dcaf33a41d5d220523d71c9b35bc08f5b8405dac Author: Petr Viktorin <[email protected]> Date: Wed Mar 20 17:33:08 2024 +0100 gh-114314: ctypes: remove stgdict and switch to heap types (GH-116458) Before this change, ctypes classes used a custom dict subclass, `StgDict`, as their `tp_dict`. This acts like a regular dict but also includes extra information about the type. This replaces stgdict by `StgInfo`, a C struct on the type, accessed by `PyObject_GetTypeData()` (PEP-697). All usage of `StgDict` (mainly variables named `stgdict`, `dict`, `edict` etc.) is converted to `StgInfo` (named `stginfo`, `info`, `einfo`, etc.). Where the dict is actually used for class attributes (as a regular PyDict), it's now called `attrdict`. This change -- not overriding `tp_dict` -- is made to make me comfortable with the next part of this PR: moving the initialization logic from `tp_new` to `tp_init`. The `StgInfo` is set up in `__init__` of each class, with a guard that prevents calling `__init__` more than once. Note that abstract classes (like `Array` or `Structure`) are created using `PyType_FromMetaclass` and do not have `__init__` called. Previously, this was done in `__new__`, which also wasn't called for abstract classes. Since `__init__` can be called from Python code or skipped, there is a tested guard to ensure `StgInfo` is initialized exactly once before it's used. Co-authored-by: neonene <[email protected]> Co-authored-by: Erlend E. Aasland <[email protected]> commit 44fbab43d8f3f2df07091d237824cf4fa1f6c57c Author: Russell Keith-Magee <[email protected]> Date: Wed Mar 20 23:32:56 2024 +0800 gh-117058: Update GUI and packaging recommendations for macOS. (#117059) commit 9221ef2d8cb7f4cf37592eb650d4c8f972033000 Author: Brett Simmers <[email protected]> Date: Wed Mar 20 08:18:26 2024 -0700 gh-116908: Only write to `_pending_calls.calls_to_do` with atomic operations (#117044) These writes to `pending->calls_to_do` need to be atomic, because other threads can read (atomically) from `calls_to_do` without holding `pending->mutex`. commit fc4599800778f9b130d5e336deadbdeb5bd3e5ee Author: jkriegshauser <[email protected]> Date: Wed Mar 20 07:33:28 2024 -0700 gh-116773: Ensure overlapped objects on Windows are not deallocated too early by asyncio (GH-116774) commit 519b2ae22b54760475bbf62b9558d453c703f9c6 Author: Serhiy Storchaka <[email protected]> Date: Wed Mar 20 15:39:53 2024 +0200 gh-117021: Fix integer overflow in PyLong_AsPid() on non-Windows 64-bit platforms (GH-117064)

…he total heap size. (pythonGH-117120)

… 1% of the total heap size. (pythonGH-117120)" This reverts commit e28477f.

Change the size of the increment to about 1% of the total heap size.

d0672a4

bedevere-app bot added the awaiting core review label Mar 21, 2024

markshannon changed the title ~~GC-117108: Change the size of the GC increment to about 1% of the total heap size.~~ GH-117108: Change the size of the GC increment to about 1% of the total heap size. Mar 21, 2024

bedevere-app bot mentioned this pull request Mar 21, 2024

Major slowdown on large listcomp #117108

Closed

markshannon mentioned this pull request Mar 21, 2024

gh-117122: Fix pystats after incremental GC changes #117123

Closed

mdboom reviewed Mar 21, 2024

View reviewed changes

Fix some compiler warnings

11987ce

markshannon requested a review from pablogsal as a code owner March 22, 2024 08:46

hugovk mentioned this pull request Mar 22, 2024

CI: Print detailed Python version sphinx-doc/sphinx#12176

Merged

mdboom mentioned this pull request Mar 22, 2024

gh-116968: Reimplement Tier 2 counters #117144

Merged

ericsnowcurrently approved these changes Mar 22, 2024

View reviewed changes

bedevere-app bot added awaiting merge and removed awaiting core review labels Mar 22, 2024

Address review comments

ed85624

gpshead reviewed Mar 22, 2024

View reviewed changes

Modules/gcmodule.c Show resolved Hide resolved

Address review comment

18510ee

markshannon merged commit e28477f into python:main Mar 22, 2024
35 checks passed

bedevere-app bot removed the awaiting merge label Mar 22, 2024

picnixz mentioned this pull request Mar 22, 2024

[tests] tests on Python 3.13 are very slow sphinx-doc/sphinx#12174

Closed

mdboom mentioned this pull request Mar 22, 2024

Investigation: Why do some benchmarks have significantly increased memory usage with the new incremental GC? faster-cpython/ideas#668

Open

picnixz mentioned this pull request Mar 23, 2024

[task] benchmark Sphinx on Python 3.13 sphinx-doc/sphinx#12181

Closed

adorilson pushed a commit to adorilson/cpython that referenced this pull request Mar 25, 2024

pythonGH-117108: Change the size of the GC increment to about 1% of t…

47f5202

…he total heap size. (pythonGH-117120)

vstinner mentioned this pull request Mar 26, 2024

multiprocessing test_processes: test_thread_safety() fails with: Assertion failed: gc_list_is_empty(to) || gc_old_space(to_tail) == gc_old_space(from_tail) #117252

Closed

diegorusso pushed a commit to diegorusso/cpython that referenced this pull request Apr 17, 2024

pythonGH-117108: Change the size of the GC increment to about 1% of t…

6e59d30

…he total heap size. (pythonGH-117120)

markshannon deleted the fix-gc-counting branch August 6, 2024 10:18

Yhg1s added a commit to Yhg1s/cpython that referenced this pull request Sep 29, 2024

Revert "pythonGH-117108: Change the size of the GC increment to about…

60a248b

… 1% of the total heap size. (pythonGH-117120)" This reverts commit e28477f.

Yhg1s mentioned this pull request Sep 29, 2024

[3.13] GH-124567: Revert the Incremental GC in 3.13 #124770

Merged

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

GH-117108: Change the size of the GC increment to about 1% of the total heap size. #117120

GH-117108: Change the size of the GC increment to about 1% of the total heap size. #117120

markshannon commented Mar 21, 2024 •

edited by bedevere-app bot

Loading

mdboom commented Mar 21, 2024

mdboom left a comment

tim-one commented Mar 21, 2024

mdboom commented Mar 21, 2024

mdboom commented Mar 22, 2024

markshannon commented Mar 22, 2024

mdboom commented Mar 22, 2024

ericsnowcurrently left a comment

mdboom commented Mar 22, 2024

markshannon commented Mar 22, 2024

mdboom commented Mar 22, 2024 •

edited

Loading

markshannon commented Mar 22, 2024

mdboom commented Mar 22, 2024

bedevere-bot commented Mar 22, 2024

bedevere-bot commented Mar 22, 2024

bedevere-bot commented Mar 22, 2024

bedevere-bot commented Mar 22, 2024

bedevere-bot commented Mar 22, 2024

encukou commented Mar 25, 2024

markshannon commented Mar 25, 2024

vstinner commented Mar 26, 2024

GH-117108: Change the size of the GC increment to about 1% of the total heap size. #117120

GH-117108: Change the size of the GC increment to about 1% of the total heap size. #117120

Conversation

markshannon commented Mar 21, 2024 • edited by bedevere-app bot Loading

mdboom commented Mar 21, 2024

mdboom left a comment

Choose a reason for hiding this comment

tim-one commented Mar 21, 2024

mdboom commented Mar 21, 2024

mdboom commented Mar 22, 2024

markshannon commented Mar 22, 2024

mdboom commented Mar 22, 2024

ericsnowcurrently left a comment

Choose a reason for hiding this comment

mdboom commented Mar 22, 2024

markshannon commented Mar 22, 2024

mdboom commented Mar 22, 2024 • edited Loading

markshannon commented Mar 22, 2024

mdboom commented Mar 22, 2024

bedevere-bot commented Mar 22, 2024

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

bedevere-bot commented Mar 22, 2024

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

bedevere-bot commented Mar 22, 2024

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

bedevere-bot commented Mar 22, 2024

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

bedevere-bot commented Mar 22, 2024

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

encukou commented Mar 25, 2024

markshannon commented Mar 25, 2024

vstinner commented Mar 26, 2024

markshannon commented Mar 21, 2024 •

edited by bedevere-app bot

Loading

mdboom commented Mar 22, 2024 •

edited

Loading