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GeezerVison is showing github.com — cpython/Python/sysmodule.c at 3.7 · python/cpython Expand file tree/ Copy pathsysmodule.cMore file actions 2858 lines (2516 loc) · 82.9 KB / Copy pathsysmodule.cFile metadata and controls2858 lines (2516 loc) · 82.9 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 /* System module */ /* Various bits of information used by the interpreter are collected in module 'sys'. Function member: - exit(sts): raise SystemExit Data members: - stdin, stdout, stderr: standard file objects - modules: the table of modules (dictionary) - path: module search path (list of strings) - argv: script arguments (list of strings) - ps1, ps2: optional primary and secondary prompts (strings) */ #include "Python.h" #include "internal/pycore_long.h" // _PY_LONG_MAX_STR_DIGITS_THRESHOLD #include "internal/pystate.h" #include "code.h" #include "frameobject.h" #include "pythread.h" #include "osdefs.h" #include <locale.h> #ifdef MS_WINDOWS #define WIN32_LEAN_AND_MEAN #include <windows.h> #endif /* MS_WINDOWS */ #ifdef MS_COREDLL extern void *PyWin_DLLhModule; /* A string loaded from the DLL at startup: */ extern const char *PyWin_DLLVersionString; #endif /*[clinic input] module sys [clinic start generated code]*/ /*[clinic end generated code: output=da39a3ee5e6b4b0d input=3726b388feee8cea]*/ #include "clinic/sysmodule.c.h" _Py_IDENTIFIER(_); _Py_IDENTIFIER(__sizeof__); _Py_IDENTIFIER(_xoptions); _Py_IDENTIFIER(buffer); _Py_IDENTIFIER(builtins); _Py_IDENTIFIER(encoding); _Py_IDENTIFIER(path); _Py_IDENTIFIER(stdout); _Py_IDENTIFIER(stderr); _Py_IDENTIFIER(warnoptions); _Py_IDENTIFIER(write); PyObject * _PySys_GetObjectId(_Py_Identifier *key) { PyThreadState *tstate = PyThreadState_GET(); PyObject *sd = tstate->interp->sysdict; if (sd == NULL) return NULL; return _PyDict_GetItemId(sd, key); } PyObject * PySys_GetObject(const char *name) { PyThreadState *tstate = PyThreadState_GET(); PyObject *sd = tstate->interp->sysdict; if (sd == NULL) return NULL; return PyDict_GetItemString(sd, name); } int _PySys_SetObjectId(_Py_Identifier *key, PyObject *v) { PyThreadState *tstate = PyThreadState_GET(); PyObject *sd = tstate->interp->sysdict; if (v == NULL) { if (_PyDict_GetItemId(sd, key) == NULL) return 0; else return _PyDict_DelItemId(sd, key); } else return _PyDict_SetItemId(sd, key, v); } int PySys_SetObject(const char *name, PyObject *v) { PyThreadState *tstate = PyThreadState_GET(); PyObject *sd = tstate->interp->sysdict; if (v == NULL) { if (PyDict_GetItemString(sd, name) == NULL) return 0; else return PyDict_DelItemString(sd, name); } else return PyDict_SetItemString(sd, name, v); } static PyObject * sys_breakpointhook(PyObject *self, PyObject *const *args, Py_ssize_t nargs, PyObject *keywords) { assert(!PyErr_Occurred()); char *envar = Py_GETENV("PYTHONBREAKPOINT"); if (envar == NULL || strlen(envar) == 0) { envar = "pdb.set_trace"; } else if (!strcmp(envar, "0")) { /* The breakpoint is explicitly no-op'd. */ Py_RETURN_NONE; } /* According to POSIX the string returned by getenv() might be invalidated * or the string content might be overwritten by a subsequent call to * getenv(). Since importing a module can performs the getenv() calls, * we need to save a copy of envar. */ envar = _PyMem_RawStrdup(envar); if (envar == NULL) { PyErr_NoMemory(); return NULL; } const char *last_dot = strrchr(envar, '.'); const char *attrname = NULL; PyObject *modulepath = NULL; if (last_dot == NULL) { /* The breakpoint is a built-in, e.g. PYTHONBREAKPOINT=int */ modulepath = PyUnicode_FromString("builtins"); attrname = envar; } else if (last_dot != envar) { /* Split on the last dot; */ modulepath = PyUnicode_FromStringAndSize(envar, last_dot - envar); attrname = last_dot + 1; } else { goto warn; } if (modulepath == NULL) { PyMem_RawFree(envar); return NULL; } PyObject *fromlist = Py_BuildValue("(s)", attrname); if (fromlist == NULL) { Py_DECREF(modulepath); PyMem_RawFree(envar); return NULL; } PyObject *module = PyImport_ImportModuleLevelObject( modulepath, NULL, NULL, fromlist, 0); Py_DECREF(modulepath); Py_DECREF(fromlist); if (module == NULL) { if (PyErr_ExceptionMatches(PyExc_ImportError)) { goto warn; } PyMem_RawFree(envar); return NULL; } PyObject *hook = PyObject_GetAttrString(module, attrname); Py_DECREF(module); if (hook == NULL) { if (PyErr_ExceptionMatches(PyExc_AttributeError)) { goto warn; } PyMem_RawFree(envar); return NULL; } PyMem_RawFree(envar); PyObject *retval = _PyObject_FastCallKeywords(hook, args, nargs, keywords); Py_DECREF(hook); return retval; warn: /* If any of the imports went wrong, then warn and ignore. */ PyErr_Clear(); int status = PyErr_WarnFormat( PyExc_RuntimeWarning, 0, "Ignoring unimportable $PYTHONBREAKPOINT: \"%s\"", envar); PyMem_RawFree(envar); if (status < 0) { /* Printing the warning raised an exception. */ return NULL; } /* The warning was (probably) issued. */ Py_RETURN_NONE; } PyDoc_STRVAR(breakpointhook_doc, "breakpointhook(*args, **kws)\n" "\n" "This hook function is called by built-in breakpoint().\n" ); /* Write repr(o) to sys.stdout using sys.stdout.encoding and 'backslashreplace' error handler. If sys.stdout has a buffer attribute, use sys.stdout.buffer.write(encoded), otherwise redecode the string and use sys.stdout.write(redecoded). Helper function for sys_displayhook(). */ static int sys_displayhook_unencodable(PyObject *outf, PyObject *o) { PyObject *stdout_encoding = NULL; PyObject *encoded, *escaped_str, *repr_str, *buffer, *result; const char *stdout_encoding_str; int ret; stdout_encoding = _PyObject_GetAttrId(outf, &PyId_encoding); if (stdout_encoding == NULL) goto error; stdout_encoding_str = PyUnicode_AsUTF8(stdout_encoding); if (stdout_encoding_str == NULL) goto error; repr_str = PyObject_Repr(o); if (repr_str == NULL) goto error; encoded = PyUnicode_AsEncodedString(repr_str, stdout_encoding_str, "backslashreplace"); Py_DECREF(repr_str); if (encoded == NULL) goto error; buffer = _PyObject_GetAttrId(outf, &PyId_buffer); if (buffer) { result = _PyObject_CallMethodIdObjArgs(buffer, &PyId_write, encoded, NULL); Py_DECREF(buffer); Py_DECREF(encoded); if (result == NULL) goto error; Py_DECREF(result); } else { PyErr_Clear(); escaped_str = PyUnicode_FromEncodedObject(encoded, stdout_encoding_str, "strict"); Py_DECREF(encoded); if (PyFile_WriteObject(escaped_str, outf, Py_PRINT_RAW) != 0) { Py_DECREF(escaped_str); goto error; } Py_DECREF(escaped_str); } ret = 0; goto finally; error: ret = -1; finally: Py_XDECREF(stdout_encoding); return ret; } static PyObject * sys_displayhook(PyObject *self, PyObject *o) { PyObject *outf; PyObject *builtins; static PyObject *newline = NULL; int err; builtins = _PyImport_GetModuleId(&PyId_builtins); if (builtins == NULL) { if (!PyErr_Occurred()) { PyErr_SetString(PyExc_RuntimeError, "lost builtins module"); } return NULL; } Py_DECREF(builtins); /* Print value except if None */ /* After printing, also assign to '_' */ /* Before, set '_' to None to avoid recursion */ if (o == Py_None) { Py_RETURN_NONE; } if (_PyObject_SetAttrId(builtins, &PyId__, Py_None) != 0) return NULL; outf = _PySys_GetObjectId(&PyId_stdout); if (outf == NULL || outf == Py_None) { PyErr_SetString(PyExc_RuntimeError, "lost sys.stdout"); return NULL; } if (PyFile_WriteObject(o, outf, 0) != 0) { if (PyErr_ExceptionMatches(PyExc_UnicodeEncodeError)) { /* repr(o) is not encodable to sys.stdout.encoding with * sys.stdout.errors error handler (which is probably 'strict') */ PyErr_Clear(); err = sys_displayhook_unencodable(outf, o); if (err) return NULL; } else { return NULL; } } if (newline == NULL) { newline = PyUnicode_FromString("\n"); if (newline == NULL) return NULL; } if (PyFile_WriteObject(newline, outf, Py_PRINT_RAW) != 0) return NULL; if (_PyObject_SetAttrId(builtins, &PyId__, o) != 0) return NULL; Py_RETURN_NONE; } PyDoc_STRVAR(displayhook_doc, "displayhook(object) -> None\n" "\n" "Print an object to sys.stdout and also save it in builtins._\n" ); static PyObject * sys_excepthook(PyObject* self, PyObject* args) { PyObject *exc, *value, *tb; if (!PyArg_UnpackTuple(args, "excepthook", 3, 3, &exc, &value, &tb)) return NULL; PyErr_Display(exc, value, tb); Py_RETURN_NONE; } PyDoc_STRVAR(excepthook_doc, "excepthook(exctype, value, traceback) -> None\n" "\n" "Handle an exception by displaying it with a traceback on sys.stderr.\n" ); static PyObject * sys_exc_info(PyObject *self, PyObject *noargs) { _PyErr_StackItem *err_info = _PyErr_GetTopmostException(PyThreadState_GET()); return Py_BuildValue( "(OOO)", err_info->exc_type != NULL ? err_info->exc_type : Py_None, err_info->exc_value != NULL ? err_info->exc_value : Py_None, err_info->exc_traceback != NULL ? err_info->exc_traceback : Py_None); } PyDoc_STRVAR(exc_info_doc, "exc_info() -> (type, value, traceback)\n\ \n\ Return information about the most recent exception caught by an except\n\ clause in the current stack frame or in an older stack frame." ); static PyObject * sys_exit(PyObject *self, PyObject *args) { PyObject *exit_code = 0; if (!PyArg_UnpackTuple(args, "exit", 0, 1, &exit_code)) return NULL; /* Raise SystemExit so callers may catch it or clean up. */ PyErr_SetObject(PyExc_SystemExit, exit_code); return NULL; } PyDoc_STRVAR(exit_doc, "exit([status])\n\ \n\ Exit the interpreter by raising SystemExit(status).\n\ If the status is omitted or None, it defaults to zero (i.e., success).\n\ If the status is an integer, it will be used as the system exit status.\n\ If it is another kind of object, it will be printed and the system\n\ exit status will be one (i.e., failure)." ); static PyObject * sys_getdefaultencoding(PyObject *self) { return PyUnicode_FromString(PyUnicode_GetDefaultEncoding()); } PyDoc_STRVAR(getdefaultencoding_doc, "getdefaultencoding() -> string\n\ \n\ Return the current default string encoding used by the Unicode \n\ implementation." ); static PyObject * sys_getfilesystemencoding(PyObject *self) { if (Py_FileSystemDefaultEncoding) return PyUnicode_FromString(Py_FileSystemDefaultEncoding); PyErr_SetString(PyExc_RuntimeError, "filesystem encoding is not initialized"); return NULL; } PyDoc_STRVAR(getfilesystemencoding_doc, "getfilesystemencoding() -> string\n\ \n\ Return the encoding used to convert Unicode filenames in\n\ operating system filenames." ); static PyObject * sys_getfilesystemencodeerrors(PyObject *self) { if (Py_FileSystemDefaultEncodeErrors) return PyUnicode_FromString(Py_FileSystemDefaultEncodeErrors); PyErr_SetString(PyExc_RuntimeError, "filesystem encoding is not initialized"); return NULL; } PyDoc_STRVAR(getfilesystemencodeerrors_doc, "getfilesystemencodeerrors() -> string\n\ \n\ Return the error mode used to convert Unicode filenames in\n\ operating system filenames." ); static PyObject * sys_intern(PyObject *self, PyObject *args) { PyObject *s; if (!PyArg_ParseTuple(args, "U:intern", &s)) return NULL; if (PyUnicode_CheckExact(s)) { Py_INCREF(s); PyUnicode_InternInPlace(&s); return s; } else { PyErr_Format(PyExc_TypeError, "can't intern %.400s", s->ob_type->tp_name); return NULL; } } PyDoc_STRVAR(intern_doc, "intern(string) -> string\n\ \n\ ``Intern'' the given string. This enters the string in the (global)\n\ table of interned strings whose purpose is to speed up dictionary lookups.\n\ Return the string itself or the previously interned string object with the\n\ same value."); /* * Cached interned string objects used for calling the profile and * trace functions. Initialized by trace_init(). */ static PyObject *whatstrings[8] = {NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL}; static int trace_init(void) { static const char * const whatnames[8] = { "call", "exception", "line", "return", "c_call", "c_exception", "c_return", "opcode" }; PyObject *name; int i; for (i = 0; i < 8; ++i) { if (whatstrings[i] == NULL) { name = PyUnicode_InternFromString(whatnames[i]); if (name == NULL) return -1; whatstrings[i] = name; } } return 0; } static PyObject * call_trampoline(PyObject* callback, PyFrameObject *frame, int what, PyObject *arg) { PyObject *result; PyObject *stack[3]; if (PyFrame_FastToLocalsWithError(frame) < 0) { return NULL; } stack[0] = (PyObject *)frame; stack[1] = whatstrings[what]; stack[2] = (arg != NULL) ? arg : Py_None; /* call the Python-level function */ result = _PyObject_FastCall(callback, stack, 3); PyFrame_LocalsToFast(frame, 1); if (result == NULL) { PyTraceBack_Here(frame); } return result; } static int profile_trampoline(PyObject *self, PyFrameObject *frame, int what, PyObject *arg) { PyObject *result; if (arg == NULL) arg = Py_None; result = call_trampoline(self, frame, what, arg); if (result == NULL) { PyEval_SetProfile(NULL, NULL); return -1; } Py_DECREF(result); return 0; } static int trace_trampoline(PyObject *self, PyFrameObject *frame, int what, PyObject *arg) { PyObject *callback; PyObject *result; if (what == PyTrace_CALL) callback = self; else callback = frame->f_trace; if (callback == NULL) return 0; result = call_trampoline(callback, frame, what, arg); if (result == NULL) { PyEval_SetTrace(NULL, NULL); Py_CLEAR(frame->f_trace); return -1; } if (result != Py_None) { Py_XSETREF(frame->f_trace, result); } else { Py_DECREF(result); } return 0; } static PyObject * sys_settrace(PyObject *self, PyObject *args) { if (trace_init() == -1) return NULL; if (args == Py_None) PyEval_SetTrace(NULL, NULL); else PyEval_SetTrace(trace_trampoline, args); Py_RETURN_NONE; } PyDoc_STRVAR(settrace_doc, "settrace(function)\n\ \n\ Set the global debug tracing function. It will be called on each\n\ function call. See the debugger chapter in the library manual." ); static PyObject * sys_gettrace(PyObject *self, PyObject *args) { PyThreadState *tstate = PyThreadState_GET(); PyObject *temp = tstate->c_traceobj; if (temp == NULL) temp = Py_None; Py_INCREF(temp); return temp; } PyDoc_STRVAR(gettrace_doc, "gettrace()\n\ \n\ Return the global debug tracing function set with sys.settrace.\n\ See the debugger chapter in the library manual." ); static PyObject * sys_setprofile(PyObject *self, PyObject *args) { if (trace_init() == -1) return NULL; if (args == Py_None) PyEval_SetProfile(NULL, NULL); else PyEval_SetProfile(profile_trampoline, args); Py_RETURN_NONE; } PyDoc_STRVAR(setprofile_doc, "setprofile(function)\n\ \n\ Set the profiling function. It will be called on each function call\n\ and return. See the profiler chapter in the library manual." ); static PyObject * sys_getprofile(PyObject *self, PyObject *args) { PyThreadState *tstate = PyThreadState_GET(); PyObject *temp = tstate->c_profileobj; if (temp == NULL) temp = Py_None; Py_INCREF(temp); return temp; } PyDoc_STRVAR(getprofile_doc, "getprofile()\n\ \n\ Return the profiling function set with sys.setprofile.\n\ See the profiler chapter in the library manual." ); static PyObject * sys_setcheckinterval(PyObject *self, PyObject *args) { if (PyErr_WarnEx(PyExc_DeprecationWarning, "sys.getcheckinterval() and sys.setcheckinterval() " "are deprecated. Use sys.setswitchinterval() " "instead.", 1) < 0) return NULL; PyInterpreterState *interp = PyThreadState_GET()->interp; if (!PyArg_ParseTuple(args, "i:setcheckinterval", &interp->check_interval)) return NULL; Py_RETURN_NONE; } PyDoc_STRVAR(setcheckinterval_doc, "setcheckinterval(n)\n\ \n\ Tell the Python interpreter to check for asynchronous events every\n\ n instructions. This also affects how often thread switches occur." ); static PyObject * sys_getcheckinterval(PyObject *self, PyObject *args) { if (PyErr_WarnEx(PyExc_DeprecationWarning, "sys.getcheckinterval() and sys.setcheckinterval() " "are deprecated. Use sys.getswitchinterval() " "instead.", 1) < 0) return NULL; PyInterpreterState *interp = PyThreadState_GET()->interp; return PyLong_FromLong(interp->check_interval); } PyDoc_STRVAR(getcheckinterval_doc, "getcheckinterval() -> current check interval; see setcheckinterval()." ); static PyObject * sys_setswitchinterval(PyObject *self, PyObject *args) { double d; if (!PyArg_ParseTuple(args, "d:setswitchinterval", &d)) return NULL; if (d <= 0.0) { PyErr_SetString(PyExc_ValueError, "switch interval must be strictly positive"); return NULL; } _PyEval_SetSwitchInterval((unsigned long) (1e6 * d)); Py_RETURN_NONE; } PyDoc_STRVAR(setswitchinterval_doc, "setswitchinterval(n)\n\ \n\ Set the ideal thread switching delay inside the Python interpreter\n\ The actual frequency of switching threads can be lower if the\n\ interpreter executes long sequences of uninterruptible code\n\ (this is implementation-specific and workload-dependent).\n\ \n\ The parameter must represent the desired switching delay in seconds\n\ A typical value is 0.005 (5 milliseconds)." ); static PyObject * sys_getswitchinterval(PyObject *self, PyObject *args) { return PyFloat_FromDouble(1e-6 * _PyEval_GetSwitchInterval()); } PyDoc_STRVAR(getswitchinterval_doc, "getswitchinterval() -> current thread switch interval; see setswitchinterval()." ); static PyObject * sys_setrecursionlimit(PyObject *self, PyObject *args) { int new_limit, mark; PyThreadState *tstate; if (!PyArg_ParseTuple(args, "i:setrecursionlimit", &new_limit)) return NULL; if (new_limit < 1) { PyErr_SetString(PyExc_ValueError, "recursion limit must be greater or equal than 1"); return NULL; } /* Issue #25274: When the recursion depth hits the recursion limit in _Py_CheckRecursiveCall(), the overflowed flag of the thread state is set to 1 and a RecursionError is raised. The overflowed flag is reset to 0 when the recursion depth goes below the low-water mark: see Py_LeaveRecursiveCall(). Reject too low new limit if the current recursion depth is higher than the new low-water mark. Otherwise it may not be possible anymore to reset the overflowed flag to 0. */ mark = _Py_RecursionLimitLowerWaterMark(new_limit); tstate = PyThreadState_GET(); if (tstate->recursion_depth >= mark) { PyErr_Format(PyExc_RecursionError, "cannot set the recursion limit to %i at " "the recursion depth %i: the limit is too low", new_limit, tstate->recursion_depth); return NULL; } Py_SetRecursionLimit(new_limit); Py_RETURN_NONE; } /*[clinic input] sys.set_coroutine_origin_tracking_depth depth: int Enable or disable origin tracking for coroutine objects in this thread. Coroutine objects will track 'depth' frames of traceback information about where they came from, available in their cr_origin attribute. Set depth of 0 to disable. [clinic start generated code]*/ static PyObject * sys_set_coroutine_origin_tracking_depth_impl(PyObject *module, int depth) /*[clinic end generated code: output=0a2123c1cc6759c5 input=9083112cccc1bdcb]*/ { if (depth < 0) { PyErr_SetString(PyExc_ValueError, "depth must be >= 0"); return NULL; } _PyEval_SetCoroutineOriginTrackingDepth(depth); Py_RETURN_NONE; } /*[clinic input] sys.get_coroutine_origin_tracking_depth -> int Check status of origin tracking for coroutine objects in this thread. [clinic start generated code]*/ static int sys_get_coroutine_origin_tracking_depth_impl(PyObject *module) /*[clinic end generated code: output=3699f7be95a3afb8 input=335266a71205b61a]*/ { return _PyEval_GetCoroutineOriginTrackingDepth(); } static PyObject * sys_set_coroutine_wrapper(PyObject *self, PyObject *wrapper) { if (PyErr_WarnEx(PyExc_DeprecationWarning, "set_coroutine_wrapper is deprecated", 1) < 0) { return NULL; } if (wrapper != Py_None) { if (!PyCallable_Check(wrapper)) { PyErr_Format(PyExc_TypeError, "callable expected, got %.50s", Py_TYPE(wrapper)->tp_name); return NULL; } _PyEval_SetCoroutineWrapper(wrapper); } else { _PyEval_SetCoroutineWrapper(NULL); } Py_RETURN_NONE; } PyDoc_STRVAR(set_coroutine_wrapper_doc, "set_coroutine_wrapper(wrapper)\n\ \n\ Set a wrapper for coroutine objects." ); static PyObject * sys_get_coroutine_wrapper(PyObject *self, PyObject *args) { if (PyErr_WarnEx(PyExc_DeprecationWarning, "get_coroutine_wrapper is deprecated", 1) < 0) { return NULL; } PyObject *wrapper = _PyEval_GetCoroutineWrapper(); if (wrapper == NULL) { wrapper = Py_None; } Py_INCREF(wrapper); return wrapper; } PyDoc_STRVAR(get_coroutine_wrapper_doc, "get_coroutine_wrapper()\n\ \n\ Return the wrapper for coroutine objects set by sys.set_coroutine_wrapper." ); static PyTypeObject AsyncGenHooksType; PyDoc_STRVAR(asyncgen_hooks_doc, "asyncgen_hooks\n\ \n\ A named tuple providing information about asynchronous\n\ generators hooks. The attributes are read only."); static PyStructSequence_Field asyncgen_hooks_fields[] = { {"firstiter", "Hook to intercept first iteration"}, {"finalizer", "Hook to intercept finalization"}, {0} }; static PyStructSequence_Desc asyncgen_hooks_desc = { "asyncgen_hooks", /* name */ asyncgen_hooks_doc, /* doc */ asyncgen_hooks_fields , /* fields */ 2 }; static PyObject * sys_set_asyncgen_hooks(PyObject *self, PyObject *args, PyObject *kw) { static char *keywords[] = {"firstiter", "finalizer", NULL}; PyObject *firstiter = NULL; PyObject *finalizer = NULL; if (!PyArg_ParseTupleAndKeywords( args, kw, "|OO", keywords, &firstiter, &finalizer)) { return NULL; } if (finalizer && finalizer != Py_None) { if (!PyCallable_Check(finalizer)) { PyErr_Format(PyExc_TypeError, "callable finalizer expected, got %.50s", Py_TYPE(finalizer)->tp_name); return NULL; } _PyEval_SetAsyncGenFinalizer(finalizer); } else if (finalizer == Py_None) { _PyEval_SetAsyncGenFinalizer(NULL); } if (firstiter && firstiter != Py_None) { if (!PyCallable_Check(firstiter)) { PyErr_Format(PyExc_TypeError, "callable firstiter expected, got %.50s", Py_TYPE(firstiter)->tp_name); return NULL; } _PyEval_SetAsyncGenFirstiter(firstiter); } else if (firstiter == Py_None) { _PyEval_SetAsyncGenFirstiter(NULL); } Py_RETURN_NONE; } PyDoc_STRVAR(set_asyncgen_hooks_doc, "set_asyncgen_hooks(*, firstiter=None, finalizer=None)\n\ \n\ Set a finalizer for async generators objects." ); static PyObject * sys_get_asyncgen_hooks(PyObject *self, PyObject *args) { PyObject *res; PyObject *firstiter = _PyEval_GetAsyncGenFirstiter(); PyObject *finalizer = _PyEval_GetAsyncGenFinalizer(); res = PyStructSequence_New(&AsyncGenHooksType); if (res == NULL) { return NULL; } if (firstiter == NULL) { firstiter = Py_None; } if (finalizer == NULL) { finalizer = Py_None; } Py_INCREF(firstiter); PyStructSequence_SET_ITEM(res, 0, firstiter); Py_INCREF(finalizer); PyStructSequence_SET_ITEM(res, 1, finalizer); return res; } PyDoc_STRVAR(get_asyncgen_hooks_doc, "get_asyncgen_hooks()\n\ \n\ Return a namedtuple of installed asynchronous generators hooks \ (firstiter, finalizer)." ); static PyTypeObject Hash_InfoType; PyDoc_STRVAR(hash_info_doc, "hash_info\n\ \n\ A named tuple providing parameters used for computing\n\ hashes. The attributes are read only."); static PyStructSequence_Field hash_info_fields[] = { {"width", "width of the type used for hashing, in bits"}, {"modulus", "prime number giving the modulus on which the hash " "function is based"}, {"inf", "value to be used for hash of a positive infinity"}, {"nan", "value to be used for hash of a nan"}, {"imag", "multiplier used for the imaginary part of a complex number"}, {"algorithm", "name of the algorithm for hashing of str, bytes and " "memoryviews"}, {"hash_bits", "internal output size of hash algorithm"}, {"seed_bits", "seed size of hash algorithm"}, {"cutoff", "small string optimization cutoff"}, {NULL, NULL} }; static PyStructSequence_Desc hash_info_desc = { "sys.hash_info", hash_info_doc, hash_info_fields, 9, }; static PyObject * get_hash_info(void) { PyObject *hash_info; int field = 0; PyHash_FuncDef *hashfunc; hash_info = PyStructSequence_New(&Hash_InfoType); if (hash_info == NULL) return NULL; hashfunc = PyHash_GetFuncDef(); PyStructSequence_SET_ITEM(hash_info, field++, PyLong_FromLong(8*sizeof(Py_hash_t))); PyStructSequence_SET_ITEM(hash_info, field++, PyLong_FromSsize_t(_PyHASH_MODULUS)); PyStructSequence_SET_ITEM(hash_info, field++, PyLong_FromLong(_PyHASH_INF)); PyStructSequence_SET_ITEM(hash_info, field++, PyLong_FromLong(_PyHASH_NAN)); PyStructSequence_SET_ITEM(hash_info, field++, PyLong_FromLong(_PyHASH_IMAG)); PyStructSequence_SET_ITEM(hash_info, field++, PyUnicode_FromString(hashfunc->name)); PyStructSequence_SET_ITEM(hash_info, field++, PyLong_FromLong(hashfunc->hash_bits)); PyStructSequence_SET_ITEM(hash_info, field++, PyLong_FromLong(hashfunc->seed_bits)); PyStructSequence_SET_ITEM(hash_info, field++, PyLong_FromLong(Py_HASH_CUTOFF)); if (PyErr_Occurred()) { |
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