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* [3.11] bpo-40514: Drop EXPERIMENTAL_ISOLATED_SUBINTERPRETERS (gh-93185) ↵Eric Snow2022-05-281-2/+0
| | | | | | | | | | | | | (GH-93306) (cherry picked from commit caa279d6fd5f151e57f891cd4f6ba51b532501c6) This was added for bpo-40514 (gh-84694) to test out a per-interpreter GIL. However, it has since proven unnecessary to keep the experiment in the repo. (It can be done as a branch in a fork like normal.) So here we are removing: * the configure option * the macro * the code enabled by the macro Automerge-Triggered-By: GH:ericsnowcurrently
* bpo-45459: Use type names in the internal C API (GH-31669)Victor Stinner2022-03-031-1/+1
| | | Replace "struct xxx" with "xxx" types in the internal C API.
* bpo-46370: Move the static initializer for _PyRuntime to its own header ↵Eric Snow2022-01-131-15/+0
| | | | | file. (gh-30587) https://bugs.python.org/issue46370
* bpo-45953: Statically allocate the main interpreter (and initial thread ↵Eric Snow2022-01-121-10/+38
| | | | | | | | | state). (gh-29883) Previously, the main interpreter was allocated on the heap during runtime initialization. Here we instead embed it into _PyRuntimeState, which means it is statically allocated as part of the _PyRuntime global. The same goes for the initial thread state (of each interpreter, including the main one). Consequently there are fewer allocations during runtime/interpreter init, fewer possible failures, and better memory locality. FYI, this also helps efforts to consolidate globals, which in turns helps work on subinterpreter isolation. https://bugs.python.org/issue45953
* bpo-45953: Statically initialize the small ints. (gh-30092)Eric Snow2021-12-141-9/+10
| | | | | | | The array of small PyLong objects has been statically declared. Here I also statically initialize them. Consequently they are no longer initialized dynamically during runtime init. I've also moved them under a new sub-struct in _PyRuntimeState, in preparation for static allocation and initialization of other global objects. https://bugs.python.org/issue45953
* bpo-46008: Make runtime-global object/type lifecycle functions and state ↵Eric Snow2021-12-091-21/+3
| | | | | | | | | | | | consistent. (gh-29998) This change is strictly renames and moving code around. It helps in the following ways: * ensures type-related init functions focus strictly on one of the three aspects (state, objects, types) * passes in PyInterpreterState * to all those functions, simplifying work on moving types/objects/state to the interpreter * consistent naming conventions help make what's going on more clear * keeping API related to a type in the corresponding header file makes it more obvious where to look for it https://bugs.python.org/issue46008
* bpo-46008: Move Py*State init into distinct functions. (gh-29977)Eric Snow2021-12-081-1/+16
| | | | | Previously, basic initialization of PyInterprterState happened in PyInterpreterState_New() (along with allocation and adding the new interpreter to the runtime state). This prevented us from initializing interpreter states that were allocated separately (e.g. statically or in a free list). We've addressed that here by factoring out a separate function just for initialization. We've done the same for PyThreadState. _PyRuntimeState was sorted out when we added it since _PyRuntime is statically allocated. However, here we update the existing init code to line up with the functions for PyInterpreterState and PyThreadState. https://bugs.python.org/issue46008
* bpo-45691: Make array of small ints static to fix use-after-free error. ↵Mark Shannon2021-11-031-0/+15
| | | | (GH-29366)
* bpo-42882: _PyRuntimeState_Init() leaves unicode next_index unchanged (GH-24193)Victor Stinner2021-01-121-0/+4
| | | | | | | | Fix the _PyUnicode_FromId() function (_Py_IDENTIFIER(var) API) when Py_Initialize() / Py_Finalize() is called multiple times: preserve _PyRuntime.unicode_ids.next_index value. Use _PyRuntimeState_INIT macro instead memset(0) to reset _PyRuntimeState members to zero.
* bpo-39465: Fix _PyUnicode_FromId() for subinterpreters (GH-20058)Victor Stinner2020-12-251-0/+7
| | | | | | | | | | | | | | | | | Make _PyUnicode_FromId() function compatible with subinterpreters. Each interpreter now has an array of identifier objects (interned strings decoded from UTF-8). * Add PyInterpreterState.unicode.identifiers: array of identifiers objects. * Add _PyRuntimeState.unicode_ids used to allocate unique indexes to _Py_Identifier. * Rewrite the _Py_Identifier structure. Microbenchmark on _PyUnicode_FromId(&PyId_a) with _Py_IDENTIFIER(a): [ref] 2.42 ns +- 0.00 ns -> [atomic] 3.39 ns +- 0.00 ns: 1.40x slower This change adds 1 ns per _PyUnicode_FromId() call in average.
* PyOS_AfterFork_Child() uses PyStatus (GH-20596)Victor Stinner2020-06-021-1/+1
| | | | | | | | PyOS_AfterFork_Child() helper functions now return a PyStatus: PyOS_AfterFork_Child() is now responsible to handle errors. * Move _PySignal_AfterFork() to the internal C API * Add #ifdef HAVE_FORK on _PyGILState_Reinit(), _PySignal_AfterFork() and _PyInterpreterState_DeleteExceptMain().
* bpo-40513: Per-interpreter GIL (GH-19943)Victor Stinner2020-05-051-0/+2
| | | | | | | | In the experimental isolated subinterpreters build mode, the GIL is now per-interpreter. Move gil from _PyRuntimeState.ceval to PyInterpreterState.ceval. new_interpreter() always get the config from the main interpreter.
* Revert "bpo-40513: Per-interpreter signals pending (GH-19924)" (GH-19932)Victor Stinner2020-05-051-0/+5
| | | This reverts commit 4e01946cafca0cf49f796c3118e0d65237bcad69.
* bpo-40513: Per-interpreter recursion_limit (GH-19929)Victor Stinner2020-05-051-1/+0
| | | | | | | | | | | Move recursion_limit member from _PyRuntimeState.ceval to PyInterpreterState.ceval. * Py_SetRecursionLimit() now only sets _Py_CheckRecursionLimit of ceval.c if the current Python thread is part of the main interpreter. * Inline _Py_MakeEndRecCheck() into _Py_LeaveRecursiveCall(). * Convert _Py_RecursionLimitLowerWaterMark() macro into a static inline function.
* bpo-40513: Per-interpreter gil_drop_request (GH-19927)Victor Stinner2020-05-051-2/+0
| | | | Move gil_drop_request member from _PyRuntimeState.ceval to PyInterpreterState.ceval.
* bpo-40513: Per-interpreter signals pending (GH-19924)Victor Stinner2020-05-051-2/+0
| | | | Move signals_pending from _PyRuntime.ceval to PyInterpreterState.ceval.
* bpo-40232: Update PyOS_AfterFork_Child() to use _PyThread_at_fork_reinit() ↵Dong-hee Na2020-04-141-1/+2
| | | | (GH-19450)
* bpo-40268: Add pycore_runtime.h header file (GH-19493)Victor Stinner2020-04-131-0/+143
Move PyRuntimeState from pycore_pystate.h to pycore_runtime.h. Remove _PyGILState_check_enabled macro: access directly _PyRuntime.gilstate.check_enabled.
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