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f5198b09e1
In a few places we switch to another interpreter without knowing if it has a thread state associated with the current thread. For the main interpreter there wasn't much of a problem, but for subinterpreters we were *mostly* okay re-using the tstate created with the interpreter (located via PyInterpreterState_ThreadHead()). There was a good chance that tstate wasn't actually in use by another thread. However, there are no guarantees of that. Furthermore, re-using an already used tstate is currently fragile. To address this, now we create a new thread state in each of those places and use it. One consequence of this change is that PyInterpreterState_ThreadHead() may not return NULL (though that won't happen for the main interpreter).
254 lines
9.2 KiB
C
254 lines
9.2 KiB
C
#ifndef Py_INTERNAL_RUNTIME_INIT_H
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#define Py_INTERNAL_RUNTIME_INIT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef Py_BUILD_CORE
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# error "this header requires Py_BUILD_CORE define"
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#endif
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#include "pycore_ceval_state.h" // _PyEval_RUNTIME_PERF_INIT
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#include "pycore_faulthandler.h" // _faulthandler_runtime_state_INIT
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#include "pycore_floatobject.h" // _py_float_format_unknown
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#include "pycore_object.h" // _PyObject_HEAD_INIT
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#include "pycore_obmalloc_init.h" // _obmalloc_global_state_INIT
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#include "pycore_parser.h" // _parser_runtime_state_INIT
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#include "pycore_pyhash.h" // pyhash_state_INIT
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#include "pycore_pymem_init.h" // _pymem_allocators_standard_INIT
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#include "pycore_runtime_init_generated.h" // _Py_bytes_characters_INIT
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#include "pycore_signal.h" // _signals_RUNTIME_INIT
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#include "pycore_tracemalloc.h" // _tracemalloc_runtime_state_INIT
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extern PyTypeObject _PyExc_MemoryError;
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/* The static initializers defined here should only be used
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in the runtime init code (in pystate.c and pylifecycle.c). */
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#define _PyRuntimeState_INIT(runtime) \
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{ \
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.debug_offsets = { \
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.cookie = "xdebugpy", \
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.version = PY_VERSION_HEX, \
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.runtime_state = { \
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.finalizing = offsetof(_PyRuntimeState, _finalizing), \
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.interpreters_head = offsetof(_PyRuntimeState, interpreters.head), \
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}, \
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.interpreter_state = { \
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.next = offsetof(PyInterpreterState, next), \
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.threads_head = offsetof(PyInterpreterState, threads.head), \
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.gc = offsetof(PyInterpreterState, gc), \
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.imports_modules = offsetof(PyInterpreterState, imports.modules), \
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.sysdict = offsetof(PyInterpreterState, sysdict), \
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.builtins = offsetof(PyInterpreterState, builtins), \
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.ceval_gil = offsetof(PyInterpreterState, ceval.gil), \
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.gil_runtime_state_locked = offsetof(PyInterpreterState, _gil.locked), \
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.gil_runtime_state_holder = offsetof(PyInterpreterState, _gil.last_holder), \
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}, \
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.thread_state = { \
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.prev = offsetof(PyThreadState, prev), \
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.next = offsetof(PyThreadState, next), \
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.interp = offsetof(PyThreadState, interp), \
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.current_frame = offsetof(PyThreadState, current_frame), \
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.thread_id = offsetof(PyThreadState, thread_id), \
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.native_thread_id = offsetof(PyThreadState, native_thread_id), \
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}, \
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.interpreter_frame = { \
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.previous = offsetof(_PyInterpreterFrame, previous), \
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.executable = offsetof(_PyInterpreterFrame, f_executable), \
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.prev_instr = offsetof(_PyInterpreterFrame, prev_instr), \
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.localsplus = offsetof(_PyInterpreterFrame, localsplus), \
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.owner = offsetof(_PyInterpreterFrame, owner), \
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}, \
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.code_object = { \
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.filename = offsetof(PyCodeObject, co_filename), \
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.name = offsetof(PyCodeObject, co_name), \
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.linetable = offsetof(PyCodeObject, co_linetable), \
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.firstlineno = offsetof(PyCodeObject, co_firstlineno), \
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.argcount = offsetof(PyCodeObject, co_argcount), \
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.localsplusnames = offsetof(PyCodeObject, co_localsplusnames), \
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.localspluskinds = offsetof(PyCodeObject, co_localspluskinds), \
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.co_code_adaptive = offsetof(PyCodeObject, co_code_adaptive), \
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}, \
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.pyobject = { \
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.ob_type = offsetof(PyObject, ob_type), \
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}, \
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.type_object = { \
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.tp_name = offsetof(PyTypeObject, tp_name), \
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}, \
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.tuple_object = { \
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.ob_item = offsetof(PyTupleObject, ob_item), \
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}, \
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}, \
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.allocators = { \
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.standard = _pymem_allocators_standard_INIT(runtime), \
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.debug = _pymem_allocators_debug_INIT, \
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.obj_arena = _pymem_allocators_obj_arena_INIT, \
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}, \
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.obmalloc = _obmalloc_global_state_INIT, \
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.pyhash_state = pyhash_state_INIT, \
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.signals = _signals_RUNTIME_INIT, \
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.interpreters = { \
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/* This prevents interpreters from getting created \
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until _PyInterpreterState_Enable() is called. */ \
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.next_id = -1, \
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}, \
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/* A TSS key must be initialized with Py_tss_NEEDS_INIT \
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in accordance with the specification. */ \
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.autoTSSkey = Py_tss_NEEDS_INIT, \
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.parser = _parser_runtime_state_INIT, \
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.ceval = { \
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.perf = _PyEval_RUNTIME_PERF_INIT, \
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}, \
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.gilstate = { \
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.check_enabled = 1, \
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}, \
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.fileutils = { \
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.force_ascii = -1, \
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}, \
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.faulthandler = _faulthandler_runtime_state_INIT, \
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.tracemalloc = _tracemalloc_runtime_state_INIT, \
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.float_state = { \
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.float_format = _py_float_format_unknown, \
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.double_format = _py_float_format_unknown, \
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}, \
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.types = { \
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.next_version_tag = 1, \
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}, \
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.static_objects = { \
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.singletons = { \
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.small_ints = _Py_small_ints_INIT, \
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.bytes_empty = _PyBytes_SIMPLE_INIT(0, 0), \
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.bytes_characters = _Py_bytes_characters_INIT, \
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.strings = { \
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.literals = _Py_str_literals_INIT, \
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.identifiers = _Py_str_identifiers_INIT, \
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.ascii = _Py_str_ascii_INIT, \
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.latin1 = _Py_str_latin1_INIT, \
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}, \
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.tuple_empty = { \
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.ob_base = _PyVarObject_HEAD_INIT(&PyTuple_Type, 0) \
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}, \
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.hamt_bitmap_node_empty = { \
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.ob_base = _PyVarObject_HEAD_INIT(&_PyHamt_BitmapNode_Type, 0) \
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}, \
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.context_token_missing = { \
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.ob_base = _PyObject_HEAD_INIT(&_PyContextTokenMissing_Type) \
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}, \
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}, \
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}, \
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._main_interpreter = _PyInterpreterState_INIT(runtime._main_interpreter), \
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}
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#define _PyInterpreterState_INIT(INTERP) \
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{ \
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.id_refcount = -1, \
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.imports = IMPORTS_INIT, \
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.obmalloc = _obmalloc_state_INIT(INTERP.obmalloc), \
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.ceval = { \
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.recursion_limit = Py_DEFAULT_RECURSION_LIMIT, \
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}, \
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.gc = { \
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.enabled = 1, \
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.generations = { \
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/* .head is set in _PyGC_InitState(). */ \
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{ .threshold = 700, }, \
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{ .threshold = 10, }, \
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{ .threshold = 10, }, \
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}, \
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}, \
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.object_state = _py_object_state_INIT(INTERP), \
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.dtoa = _dtoa_state_INIT(&(INTERP)), \
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.dict_state = _dict_state_INIT, \
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.func_state = { \
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.next_version = 1, \
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}, \
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.types = { \
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.next_version_tag = _Py_TYPE_BASE_VERSION_TAG, \
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}, \
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.static_objects = { \
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.singletons = { \
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._not_used = 1, \
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.hamt_empty = { \
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.ob_base = _PyObject_HEAD_INIT(&_PyHamt_Type) \
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.h_root = (PyHamtNode*)&_Py_SINGLETON(hamt_bitmap_node_empty), \
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}, \
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.last_resort_memory_error = { \
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_PyObject_HEAD_INIT(&_PyExc_MemoryError) \
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}, \
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}, \
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}, \
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._initial_thread = _PyThreadState_INIT, \
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}
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#define _PyThreadState_INIT \
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{ \
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._whence = _PyThreadState_WHENCE_NOTSET, \
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.py_recursion_limit = Py_DEFAULT_RECURSION_LIMIT, \
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.context_ver = 1, \
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}
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#ifdef Py_TRACE_REFS
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# define _py_object_state_INIT(INTERP) \
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{ \
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.refchain = NULL, \
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}
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#else
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# define _py_object_state_INIT(INTERP) \
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{ 0 }
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#endif
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// global objects
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#define _PyBytes_SIMPLE_INIT(CH, LEN) \
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{ \
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_PyVarObject_HEAD_INIT(&PyBytes_Type, (LEN)) \
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.ob_shash = -1, \
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.ob_sval = { (CH) }, \
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}
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#define _PyBytes_CHAR_INIT(CH) \
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{ \
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_PyBytes_SIMPLE_INIT((CH), 1) \
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}
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#define _PyUnicode_ASCII_BASE_INIT(LITERAL, ASCII) \
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{ \
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.ob_base = _PyObject_HEAD_INIT(&PyUnicode_Type) \
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.length = sizeof(LITERAL) - 1, \
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.hash = -1, \
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.state = { \
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.kind = 1, \
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.compact = 1, \
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.ascii = (ASCII), \
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.statically_allocated = 1, \
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}, \
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}
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#define _PyASCIIObject_INIT(LITERAL) \
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{ \
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._ascii = _PyUnicode_ASCII_BASE_INIT((LITERAL), 1), \
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._data = (LITERAL) \
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}
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#define INIT_STR(NAME, LITERAL) \
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._py_ ## NAME = _PyASCIIObject_INIT(LITERAL)
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#define INIT_ID(NAME) \
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._py_ ## NAME = _PyASCIIObject_INIT(#NAME)
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#define _PyUnicode_LATIN1_INIT(LITERAL, UTF8) \
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{ \
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._latin1 = { \
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._base = _PyUnicode_ASCII_BASE_INIT((LITERAL), 0), \
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.utf8 = (UTF8), \
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.utf8_length = sizeof(UTF8) - 1, \
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}, \
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._data = (LITERAL), \
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}
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#include "pycore_runtime_init_generated.h"
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_INTERNAL_RUNTIME_INIT_H */
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