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Sam Gross c012c8ab7b
gh-115103: Delay reuse of mimalloc pages that store PyObjects (#115435) 
This implements the delayed reuse of mimalloc pages that contain Python
objects in the free-threaded build.

Allocations of the same size class are grouped in data structures called
pages. These are different from operating system pages. For thread-safety, we
want to ensure that memory used to store PyObjects remains valid as long as
there may be concurrent lock-free readers; we want to delay using it for
other size classes, in other heaps, or returning it to the operating system.

When a mimalloc page becomes empty, instead of immediately freeing it, we tag
it with a QSBR goal and insert it into a per-thread state linked list of
pages to be freed. When mimalloc needs a fresh page, we process the queue and
free any still empty pages that are now deemed safe to be freed. Pages
waiting to be freed are still available for allocations of the same size
class and allocating from a page prevent it from being freed. There is
additional logic to handle abandoned pages when threads exit.
2024-03-06 09:42:11 -05:00
..
clinic GH-114695: Add sys._clear_internal_caches (GH-115152) 2024-02-12 09:04:36 +00:00
deepfreeze gh-97669: Create Tools/build/ directory (#97963) 2022-10-17 12:01:00 +02:00
frozen_modules gh-97669: Create Tools/build/ directory (#97963) 2022-10-17 12:01:00 +02:00
_warnings.c gh-111789: Use PyDict_GetItemRef() in Python/_warnings.c (gh-112080) 2023-11-27 18:58:43 +01:00
adaptive.md GH-98686: Get rid of "adaptive" and "quick" instructions (GH-99182) 2022-11-09 10:50:09 -08:00
asdl.c bpo-43244: Remove ast.h, asdl.h, Python-ast.h headers (GH-24933) 2021-03-23 20:47:40 +01:00
asm_trampoline.S gh-96143: Move the perf trampoline files to the Python directory (#98675) 2022-10-25 23:34:22 +01:00
assemble.c GH-111485: Generate instruction and uop metadata (GH-113287) 2023-12-20 14:27:25 +00:00
ast.c GH-113655: Lower the C recursion limit on various platforms (GH-113944) 2024-01-16 09:32:01 +00:00
ast_opt.c GH-113655: Lower the C recursion limit on various platforms (GH-113944) 2024-01-16 09:32:01 +00:00
ast_unparse.c gh-100227: Move _str_replace_inf to PyInterpreterState (gh-102333) 2023-02-28 14:16:39 -07:00
bltinmodule.c gh-76763: Make chr() always raising ValueError for out-of-range values (GH-114882) 2024-02-10 12:21:35 +02:00
bootstrap_hash.c gh-110014: Fix bootstrap_hash.c: remove debug code (#110161) 2023-09-30 22:21:20 +00:00
brc.c gh-112175: Add eval_breaker to PyThreadState (#115194) 2024-02-20 09:57:48 -05:00
bytecodes.c GH-113710: Tier 2 optimizer: check the function instead of checking globals. (GH-116410) 2024-03-06 13:12:23 +00:00
ceval.c gh-116098: Revert "gh-107674: Improve performance of sys.settrace (GH-114986)" (GH-116178) 2024-03-01 07:46:33 +01:00
ceval_gil.c gh-112175: Add eval_breaker to PyThreadState (#115194) 2024-02-20 09:57:48 -05:00
ceval_macros.h gh-116098: Revert "gh-107674: Improve performance of sys.settrace (GH-114986)" (GH-116178) 2024-03-01 07:46:33 +01:00
codecs.c gh-111972: Make Unicode name C APIcapsule initialization thread-safe (#112249) 2023-11-30 11:12:49 +01:00
compile.c gh-111789: Use PyDict_GetItemRef() in Python/compile.c (GH-112083) 2024-02-23 12:35:27 +01:00
condvar.h gh-104530: Enable native Win32 condition variables by default (GH-104531) 2024-02-02 13:50:51 +00:00
context.c gh-111968: Split _Py_dictkeys_freelist out of _Py_dict_freelist (gh-115505) 2024-02-16 01:01:36 +00:00
critical_section.c gh-111569: Implement Python critical section API (gh-111571) 2023-11-08 15:39:29 -07:00
crossinterp.c gh-76785: Improved Subinterpreters Compatibility with 3.12 (gh-115424) 2024-02-13 14:56:49 -07:00
crossinterp_data_lookup.h gh-76785: Improved Subinterpreters Compatibility with 3.12 (gh-115424) 2024-02-13 14:56:49 -07:00
crossinterp_exceptions.h gh-76785: Improved Subinterpreters Compatibility with 3.12 (gh-115424) 2024-02-13 14:56:49 -07:00
dtoa.c gh-111962: Make dtoa thread-safe in --disable-gil builds. (#112049) 2023-12-07 13:47:55 +00:00
dup2.c gh-108765: Python.h no longer includes <unistd.h> (#108783) 2023-09-02 16:50:18 +02:00
dynamic_annotations.c bpo-32241: Add the const qualifire to declarations of umodifiable strings. (#4748) 2017-12-12 13:55:04 +02:00
dynload_hpux.c gh-88402: Add new sysconfig variables on Windows (GH-110049) 2023-10-04 22:50:29 +00:00
dynload_shlib.c gh-88402: Add new sysconfig variables on Windows (GH-110049) 2023-10-04 22:50:29 +00:00
dynload_stub.c gh-88402: Add new sysconfig variables on Windows (GH-110049) 2023-10-04 22:50:29 +00:00
dynload_win.c gh-88402: Add new sysconfig variables on Windows (GH-110049) 2023-10-04 22:50:29 +00:00
emscripten_signal.c GH-108614: Unbreak emscripten build (GH-109132) 2023-09-08 17:54:45 +01:00
emscripten_trampoline.c gh-106213: Make Emscripten trampolines work with JSPI (GH-106219) 2023-09-15 15:04:21 -07:00
errors.c gh-111375: Use NULL rather than None in the exception stack to indicate that an exception was handled (#113302) 2023-12-21 01:46:41 +00:00
executor_cases.c.h GH-113710: Tier 2 optimizer: check the function instead of checking globals. (GH-116410) 2024-03-06 13:12:23 +00:00
fileutils.c gh-112970: Detect and use closefrom() when available (#112969) 2023-12-12 11:25:27 +01:00
flowgraph.c gh-115796: fix exception table construction in _testinternalcapi.assemble_code_object (#115797) 2024-02-22 12:36:44 +00:00
formatter_unicode.c gh-92536: Remove PyUnicode_READY() calls (#105210) 2023-06-02 01:33:17 +02:00
frame.c Remove unused Py_XDECREF from _PyFrame_ClearExceptCode (GH-106158) 2024-02-01 18:26:22 +02:00
frozen.c gh-106560: Fix redundant declarations in Python/frozen.c (#112612) 2023-12-03 12:18:24 +01:00
frozenmain.c gh-110014: Include explicitly <unistd.h> header (#110155) 2023-09-30 20:06:45 +00:00
future.c gh-106320: Remove more private _PyUnicode C API functions (#106382) 2023-07-03 22:35:46 +00:00
gc.c gh-110850: Use public PyTime functions (#115746) 2024-02-20 23:31:30 +00:00
gc_free_threading.c gh-115103: Update refleak checker to trigger _PyMem_ProcessDelayed (gh-116238) 2024-03-03 06:44:16 +09:00
gc_gil.c gh-111968: Rename freelist related struct names to Eric's suggestion (gh-115329) 2024-02-14 00:32:51 +00:00
generated_cases.c.h GH-115685: Split _TO_BOOL_ALWAYS_TRUE into micro-ops (GH-116352) 2024-03-05 15:23:08 +00:00
getargs.c gh-107944: Improve error message for getargs with bad keyword arguments (#114792) 2024-02-08 01:04:41 -08:00
getcompiler.c closes bpo-43278: remove unnecessary leading '\n' from COMPILER when build with GCC/Clang (GH-24606) 2021-02-25 20:24:21 -08:00
getcopyright.c Update copyright years to 2024. (GH-113608) 2024-01-16 21:54:05 +01:00
getopt.c gh-110079: Remove extern "C" { ...} in C code (#110080) 2023-09-29 10:56:49 +02:00
getplatform.c bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
getversion.c gh-81057: Move Globals in Core Code to _PyRuntimeState (gh-99496) 2022-11-15 09:45:11 -07:00
hamt.c gh-106320: Remove private PyLong C API functions (#108429) 2023-08-24 18:53:50 +02:00
hashtable.c gh-111545: Add Py_HashPointer() function (#112096) 2023-12-06 15:09:22 +01:00
import.c gh-110850: Rename internal PyTime C API functions (#115734) 2024-02-20 22:16:37 +00:00
importdl.c gh-88402: Add new sysconfig variables on Windows (GH-110049) 2023-10-04 22:50:29 +00:00
initconfig.c gh-107954: Add PyConfig_MEMBER_BOOL type to PyConfigSpec (#116359) 2024-03-06 09:29:27 +00:00
instrumentation.c gh-115832: Fix instrumentation version mismatch during interpreter shutdown (#115856) 2024-03-04 11:29:39 -05:00
intrinsics.c gh-107149: make new opcode util functions private rather than public and unstable (#112042) 2023-11-14 00:31:02 +00:00
jit.c GH-116134: JIT aarch64-pc-windows-msvc (GH-116130) 2024-03-04 10:16:56 -08:00
legacy_tracing.c gh-103615: Use local events for opcode tracing (GH-109472) 2023-11-03 16:39:50 +00:00
lock.c gh-114271: Make _thread.ThreadHandle thread-safe in free-threaded builds (GH-115190) 2024-03-01 13:43:12 -08:00
marshal.c gh-113626: Add allow_code parameter in marshal functions (GH-113648) 2024-01-16 18:05:15 +02:00
modsupport.c gh-84489: Properly handle trailing spaces in Py_BuildValue() format strings (GH-21158) 2023-10-11 14:44:06 +03:00
mysnprintf.c Add a warning message about PyOS_snprintf (#95993) 2022-10-07 11:49:53 -07:00
mystrtoul.c gh-108765: Python.h no longer includes <ctype.h> (#108831) 2023-09-03 18:54:27 +02:00
object_stack.c gh-111968: Split _Py_dictkeys_freelist out of _Py_dict_freelist (gh-115505) 2024-02-16 01:01:36 +00:00
opcode_targets.h GH-111485: Generate TARGET table for computed goto dispatch. (GH-113319) 2023-12-20 15:09:12 +00:00
optimizer.c Fix debug output for optimized executor (#116337) 2024-03-05 10:05:29 -08:00
optimizer_analysis.c GH-113710: Tier 2 optimizer: check the function instead of checking globals. (GH-116410) 2024-03-06 13:12:23 +00:00
optimizer_bytecodes.c GH-115687: Most comparisons create Booleans, so propagate that information (GH-116360) 2024-03-06 10:46:42 +00:00
optimizer_cases.c.h GH-113710: Tier 2 optimizer: check the function instead of checking globals. (GH-116410) 2024-03-06 13:12:23 +00:00
optimizer_symbols.c GH-115819: Eliminate Boolean guards when value is known (GH-116355) 2024-03-05 15:06:00 +00:00
parking_lot.c gh-110850: Rename internal PyTime C API functions (#115734) 2024-02-20 22:16:37 +00:00
pathconfig.c gh-110079: Remove extern "C" { ...} in C code (#110080) 2023-09-29 10:56:49 +02:00
perf_trampoline.c gh-113343: Fix error check on mmap(2) (#113342) 2023-12-21 19:28:55 +00:00
preconfig.c gh-106320: Remove private pylifecycle.h functions (#106400) 2023-07-04 09:41:43 +00:00
pyarena.c bpo-43244: Remove the pyarena.h header (GH-25007) 2021-03-24 02:23:01 +01:00
pyctype.c
pyfpe.c bpo-46315: Add ifdef HAVE_ feature checks for WASI compatibility (GH-30507) 2022-01-13 09:46:04 +01:00
pyhash.c gh-111545: Add Py_HashPointer() function (#112096) 2023-12-06 15:09:22 +01:00
pylifecycle.c gh-115168: Add pystats counter for invalidated executors (GH-115169) 2024-02-26 17:51:47 +00:00
pymath.c bpo-45440: Remove pymath.c fallbacks (GH-28977) 2021-10-15 19:45:34 +02:00
pystate.c gh-115103: Delay reuse of mimalloc pages that store PyObjects (#115435) 2024-03-06 09:42:11 -05:00
pystrcmp.c gh-108767: Replace ctype.h functions with pyctype.h functions (#108772) 2023-09-01 18:36:53 +02:00
pystrhex.c gh-108765: pystrhex: Replace stdlib.h abs() with Py_ABS() (#108830) 2023-09-02 23:15:54 +02:00
pystrtod.c gh-108765: Cleanup #include in Python/*.c files (#108977) 2023-09-06 15:56:08 +02:00
Python-ast.c gh-105858: Improve AST node constructors (#105880) 2024-02-27 18:13:03 -08:00
Python-tokenize.c gh-112943: Correctly compute end offsets for multiline tokens in the tokenize module (#112949) 2023-12-11 11:44:22 +00:00
pythonrun.c gh-115914: minor cleanup: simplify filename_obj assignment in PyRun_AnyFileExFlags (gh-115916) 2024-02-25 12:45:38 -08:00
pytime.c gh-110850: Cleanup PyTime API: PyTime_t are nanoseconds (#115753) 2024-02-21 11:46:00 +01:00
qsbr.c gh-115103: Delay reuse of mimalloc pages that store PyObjects (#115435) 2024-03-06 09:42:11 -05:00
README Issue #18093: Factor out the programs that embed the runtime 2014-07-25 21:52:14 +10:00
specialize.c gh-115168: Add pystats counter for invalidated executors (GH-115169) 2024-02-26 17:51:47 +00:00
stdlib_module_names.h gh-110721: Remove unused code from suggestions.c after moving PyErr_Display to use the traceback module (#113712) 2024-01-08 15:10:45 +00:00
structmember.c gh-115011: Improve support of __index__() in setters of members with unsigned integer type (GH-115029) 2024-02-11 12:45:58 +02:00
suggestions.c gh-113845: Fix a compiler warning in Python/suggestions.c (GH-113949) 2024-01-11 20:31:24 +02:00
symtable.c gh-96497: Mangle name before symtable lookup in 'symtable_extend_namedexpr_scope' (GH-96561) 2024-02-17 12:06:31 +00:00
sysmodule.c gh-116326: Handler errors correctly in getwindowsversion in sysmodule (#116339) 2024-03-05 12:31:04 +00:00
thread.c gh-110850: Cleanup PyTime API: PyTime_t are nanoseconds (#115753) 2024-02-21 11:46:00 +01:00
thread_nt.h gh-116012: Preserve GetLastError() across calls to TlsGetValue on Windows (GH-116014) 2024-02-28 13:58:25 +00:00
thread_pthread.h gh-110850: Cleanup PyTime API: PyTime_t are nanoseconds (#115753) 2024-02-21 11:46:00 +01:00
thread_pthread_stubs.h GH-110829: Ensure Thread.join() joins the OS thread (#110848) 2023-11-04 13:59:24 +00:00
tier2_engine.md GH-112354: Initial implementation of warm up on exits and trace-stitching (GH-114142) 2024-02-20 09:39:55 +00:00
traceback.c GH-113655: Lower the C recursion limit on various platforms (GH-113944) 2024-01-16 09:32:01 +00:00
tracemalloc.c gh-108765: Cleanup #include in Python/*.c files (#108977) 2023-09-06 15:56:08 +02:00
vm-state.md High level docs for the VM state (#111621) 2023-11-01 22:55:10 +00:00

README 

Miscellaneous source files for the main Python shared library