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* bpo-45020: Revert "Drop the frozen .h files from the repo." (gh-28380)Eric Snow2021-09-1611-0/+14405
| | | | | gh-28375 broke one of the buildbots. Until I figure out why, I'm rolling the change back. https://bugs.python.org/issue45020
* bpo-45020: Drop the frozen .h files from the repo. (gh-28375)Eric Snow2021-09-1612-14425/+0
| | | | | The main advantage is that the files will no longer show up in diffs and PRs. That means, for a PR, the number of files / lines changed will more clearly reflect the actual change. https://bugs.python.org/issue45020
* bpo-45019: Clean up the frozen __hello__ module. (gh-28374)Eric Snow2021-09-154-21/+32
| | | | | Here's one more small cleanup that should have been in PR gh-28319. We eliminate stdout side-effects from importing the frozen __hello__ module, and update tests accordingly. We also move the module's source file into Lib/ from Toos/freeze/flag.py. https://bugs.python.org/issue45019
* bpo-45020: Freeze some of the modules imported during startup. (gh-28335)Eric Snow2021-09-1510-0/+6787
| | | | | | | Doing this provides significant performance gains for runtime startup (~15% with all the imported modules frozen). We don't yet freeze all the imported modules because there are a few hiccups in the build systems we need to sort out first. (See bpo-45186 and bpo-45188.) Note that in PR GH-28320 we added a command-line flag (-X frozen_modules=[on|off]) that allows users to opt out of (or into) using frozen modules. The default is still "off" but we will change it to "on" as soon as we can do it in a way that does not cause contributors pain. https://bugs.python.org/issue45020
* bpo-45203: Cleanup stats gathering code for LOAD_METHOD (GH-28352)Mark Shannon2021-09-151-41/+39
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* bpo-21302: Add _PyTime_AsNanoseconds() (GH-28350)Victor Stinner2021-09-151-123/+188
| | | | | | | | | | | | | | | | | Refactor pytime.c: * Add pytime_from_nanoseconds() and pytime_as_nanoseconds(), and use explicitly these functions * Add two empty lines between functions * PEP 7: add braces { ... } * C99: declare variables where they are set * Rename private functions to lowercase * Rename error_time_t_overflow() to pytime_time_t_overflow() * Rename win_perf_counter_frequency() to py_win_perf_counter_frequency() * py_get_monotonic_clock(): add an assertion to detect overflow when mach_absolute_time() unsigned uint64_t is casted to _PyTime_t (signed int64_t). _testcapi: use _PyTime_FromNanoseconds().
* bpo-45020: Add -X frozen_modules=[on|off] to explicitly control use of ↵Eric Snow2021-09-144-13/+174
| | | | | | | frozen modules. (gh-28320) Currently we freeze several modules into the runtime. For each of these modules it is essential to bootstrapping the runtime that they be frozen. Any other stdlib module that we later freeze into the runtime is not essential. We can just as well import from the .py file. This PR lets users explicitly choose which should be used, with the new "-X frozen_modules=[on|off]" CLI flag. The default is "off" for now. https://bugs.python.org/issue45020
* bpo-45152: Add HAS_CONST macro and get_const_value() function and use… ↵Irit Katriel2021-09-141-7/+39
| | | | (#28262)
* bpo-45019: Do some cleanup related to frozen modules. (gh-28319)Eric Snow2021-09-135-2/+80
| | | | | There are a few things I missed in gh-27980. This is a follow-up that will make subsequent PRs cleaner. It includes fixes to tests and tools that reference the frozen modules. https://bugs.python.org/issue45019
* bpo-43413: Fix handling keyword arguments in subclasses of some buitin ↵Serhiy Storchaka2021-09-121-2/+4
| | | | | | | | classes (GH-26456) * Constructors of subclasses of some buitin classes (e.g. tuple, list, frozenset) no longer accept arbitrary keyword arguments. * Subclass of set can now define a __new__() method with additional keyword parameters without overriding also __init__().
* bpo-44219: Release the GIL during isatty syscalls (GH-28250)Vincent Michel2021-09-091-2/+14
| | | | | | Release the GIL while performing isatty() system calls on arbitrary file descriptors. In particular, this affects os.isatty(), os.device_encoding() and io.TextIOWrapper. By extension, io.open() in text mode is also affected.
* bpo-44959: Add fallback to extension modules with '.sl' suffix on HP-UX ↵Florin Spătar2021-09-081-1/+1
| | | | (GH-27857)
* bpo-45123: PyAiter_Check and PyObject_GetAiter fix & rename. (GH-28194)Yury Selivanov2021-09-071-1/+1
| | | | | | | | Fix PyAiter_Check to only check for the `__anext__` presense (not for `__aiter__`). Rename `PyAiter_Check()` to `PyAIter_Check()`, `PyObject_GetAiter()` -> `PyObject_GetAIter()`. Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
* bpo-41031: Match C and Python code formatting of unprintable exceptions and ↵Irit Katriel2021-09-052-2/+6
| | | | exceptions in the __main__ module. (GH-28139)
* bpo-45094: Add Py_NO_INLINE macro (GH-28140)Victor Stinner2021-09-031-1/+1
| | | | | * Rename _Py_NO_INLINE macro to Py_NO_INLINE: make it public and document it. * Sort macros in the C API documentation.
* bpo-34602: Quadruple stack size on macOS when compiling with UBSAN (GH-27309)Łukasz Langa2021-09-031-7/+6
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* bpo-45083: Include the exception class qualname when formatting an exception ↵Irit Katriel2021-09-032-35/+35
| | | | | (GH-28119) Co-authored-by: Erlend Egeberg Aasland <erlend.aasland@innova.no>
* bpo-45056: Remove trailing unused constants from co_consts (GH-28109)Inada Naoki2021-09-024-6318/+6348
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* bpo-45085: Remove the binhex module (GH-28117)Victor Stinner2021-09-021-1/+0
| | | | | | | | | | The binhex module, deprecated in Python 3.9, is now removed. The following binascii functions, deprecated in Python 3.9, are now also removed: * a2b_hqx(), b2a_hqx(); * rlecode_hqx(), rledecode_hqx(). The binascii.crc_hqx() function remains available.
* bpo-45039: Consistently use ADDOP_LOAD_CONST in compiler rather than ↵Irit Katriel2021-08-311-2/+4
| | | | ADDOP_O(c, LOAD_CONST,...) (GH-28015)
* bpo-37596: Clean up the set/frozenset marshalling code (GH-28068)Brandt Bucher2021-08-311-8/+11
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* bpo-45061: Enhance faulthandler traceback wit no Python frame (GH-28090)Victor Stinner2021-08-311-1/+1
| | | | | | | | Fix indentation of <no Python frame> message in a faulthandler traceback or a Fatal Python error traceback. Example: Current thread 0x00007f03896fb740 (most recent call first): Garbage-collecting <no Python frame>
* bpo-45019: Add a tool to generate list of modules to include for frozen ↵Eric Snow2021-08-305-29/+57
| | | | | | | modules (gh-27980) Frozen modules must be added to several files in order to work properly. Before this change this had to be done manually. Here we add a tool to generate the relevant lines in those files instead. This helps us avoid mistakes and omissions. https://bugs.python.org/issue45019
* bpo-45045: Optimize mapping patterns of structural pattern matching (GH-28043)Dong-hee Na2021-08-301-6/+17
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* Refine specialization stats (GH-27992)Mark Shannon2021-08-271-17/+89
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* bpo-44945: Specialize BINARY_ADD (GH-27967)Mark Shannon2021-08-273-46/+195
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* bpo-45000: Raise SyntaxError when try to delete __debug__ (GH-27947)Dong-hee Na2021-08-251-0/+4
| | | Automerge-Triggered-By: GH:pablogsal
* bpo-44990: Change layout of evaluation frames. "Layout B" (GH-27933)Mark Shannon2021-08-253-66/+62
| | | Places the locals between the specials and stack. This is the more "natural" layout for a C struct, makes the code simpler and gives a slight speedup (~1%)
* Format the Python-tokenize module and fix exit path (GH-27935)Pablo Galindo Salgado2021-08-251-47/+46
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* bpo-37596: Make `set` and `frozenset` marshalling deterministic (GH-27926)Brandt Bucher2021-08-251-0/+32
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* Add tests for the C tokenizer and expose it as a private module (GH-27924)Pablo Galindo Salgado2021-08-243-0/+237
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* bpo-44895: Introduce PYTHONDUMPREFSFILE variable for refcount dumping (GH-27767)Dong-hee Na2021-08-172-0/+29
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* bpo-44889: Specialize LOAD_METHOD with PEP 659 adaptive interpreter (GH-27722)Ken Jin2021-08-173-37/+319
| | | | | | | | Adds four new instructions: * LOAD_METHOD_ADAPTIVE * LOAD_METHOD_CACHED * LOAD_METHOD_MODULE * LOAD_METHOD_CLASS
* bpo-44900: Add five superinstructions. (GH-27741)Mark Shannon2021-08-163-19/+115
| | | | | | | | * LOAD_FAST LOAD_FAST * STORE_FAST LOAD_FAST * LOAD_FAST LOAD_CONST * LOAD_CONST LOAD_FAST * STORE_FAST STORE_FAST
* bpo-43392: Optimize repeated calls to `__import__()` (GH-24735)Germán Méndez Bravo2021-08-121-512/+519
| | | | | | | | | | | | | | | | | | | | | Implements a two steps check in `importlib._bootstrap._find_and_load()` to avoid locking when the module has been already imported and it's ready. --- Using `importlib.__import__()`, after this, does show a big difference: Before: ``` $ ./python -c 'import timeit; print(timeit.timeit("__import__(\"timeit\")", setup="from importlib import __import__"))' 15.92248619502061 ``` After: ``` $ ./python -c 'import timeit; print(timeit.timeit("__import__(\"timeit\")", setup="from importlib import __import__"))' 1.206068897008663 ``` ---
* bpo-44885: Correct the ast locations of f-strings with format specs and ↵Pablo Galindo Salgado2021-08-123-42/+42
| | | | repeated expressions (GH-27729)
* bpo-44890: collect specialization stats if Py_DEBUG (GH-27731)Irit Katriel2021-08-122-7/+7
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* bpo-44878: Remove loop from interpreter. All dispatching is done by gotos. ↵Mark Shannon2021-08-121-14/+17
| | | | (GH-27727)
* Update test__opcode and _Py_GetSpecializationStats with recent ↵Irit Katriel2021-08-111-0/+1
| | | | specialization stat changes (GH-27728)
* bpo-44878: Remove the switch from the main interpreter loop when using ↵Mark Shannon2021-08-111-177/+206
| | | | | | | | computed gotos. (GH-27726) * Refactor dispatch logic to make flow of control clearer. Moves lltrace and dxprofile instrumentation into DISPATCH macro. * Remove switch in interpreter loop when using computed gotos. There is no need for two nearly-duplicate dispatch tables.
* bpo-44878: _PyEval_EvalFrameDefault readability improvements (GH-27725)Mark Shannon2021-08-111-51/+49
| | | | | * Move a few variable declarations to point of definition. * Factor out tracing of function entry into helper function.
* Add missing DISPATCH() (GH-27715)Mark Shannon2021-08-111-0/+2
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* Classify specialization failures. Provides more useful stats, with lower ↵Mark Shannon2021-08-101-96/+83
| | | | overhead. (GH-27701)
* Fix stats for STORE_ATTR specialization. (GH-27708)Mark Shannon2021-08-101-0/+2
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* bpo-25782: avoid hang in PyErr_SetObject when current exception has a cycle ↵Irit Katriel2021-08-101-1/+15
| | | | | in its context chain (GH-27626) Co-authored-by: Dennis Sweeney 36520290+sweeneyde@users.noreply.github.com
* bpo-44854: Remove trailing whitespaces (GH-27689)Serhiy Storchaka2021-08-091-2/+2
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* Remove unused variable. (GH-27677)Mark Shannon2021-08-091-3/+0
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* bpo-44826: Specialize STORE_ATTR (GH-27590)Mark Shannon2021-08-093-78/+311
| | | | | | | * Generalize cache names for LOAD_ATTR to allow store and delete specializations. * Factor out specialization of attribute dictionary access. * Specialize STORE_ATTR.
* bpo-44840: Compiler: Move duplication of exit blocks with no line numbers to ↵Mark Shannon2021-08-094-6645/+6638
| | | | after CFG optimization. (GH-27656)
* bpo-44856: Possible reference leak in error paths of update_bases() and ↵Pablo Galindo Salgado2021-08-071-22/+13
| | | | __build_class__ (GH-27647)
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