mirror of
https://github.com/python/cpython.git
synced 2024-12-14 04:17:19 +08:00
7b3f0fa68e
sys.stdout and sys.stderr are now using "\r\n" newline on Windows, as Python 2.
2723 lines
73 KiB
C
2723 lines
73 KiB
C
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/* Python interpreter top-level routines, including init/exit */
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#include "Python.h"
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#include "Python-ast.h"
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#undef Yield /* undefine macro conflicting with winbase.h */
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#include "grammar.h"
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#include "node.h"
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#include "token.h"
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#include "parsetok.h"
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#include "errcode.h"
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#include "code.h"
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#include "symtable.h"
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#include "ast.h"
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#include "marshal.h"
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#include "osdefs.h"
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#ifdef HAVE_SIGNAL_H
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#include <signal.h>
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#endif
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#ifdef MS_WINDOWS
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#include "malloc.h" /* for alloca */
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#endif
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#ifdef HAVE_LANGINFO_H
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#include <locale.h>
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#include <langinfo.h>
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#endif
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#ifdef MS_WINDOWS
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#undef BYTE
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#include "windows.h"
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#define PATH_MAX MAXPATHLEN
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#endif
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#ifndef Py_REF_DEBUG
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#define PRINT_TOTAL_REFS()
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#else /* Py_REF_DEBUG */
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#define PRINT_TOTAL_REFS() fprintf(stderr, \
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"[%" PY_FORMAT_SIZE_T "d refs]\n", \
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_Py_GetRefTotal())
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern wchar_t *Py_GetPath(void);
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extern grammar _PyParser_Grammar; /* From graminit.c */
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/* Forward */
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static void initmain(PyInterpreterState *interp);
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static int initfsencoding(PyInterpreterState *interp);
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static void initsite(void);
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static int initstdio(void);
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static void flush_io(void);
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static PyObject *run_mod(mod_ty, const char *, PyObject *, PyObject *,
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PyCompilerFlags *, PyArena *);
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static PyObject *run_pyc_file(FILE *, const char *, PyObject *, PyObject *,
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PyCompilerFlags *);
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static void err_input(perrdetail *);
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static void err_free(perrdetail *);
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static void initsigs(void);
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static void call_py_exitfuncs(void);
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static void wait_for_thread_shutdown(void);
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static void call_ll_exitfuncs(void);
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extern int _PyUnicode_Init(void);
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extern void _PyUnicode_Fini(void);
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extern int _PyLong_Init(void);
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extern void PyLong_Fini(void);
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extern int _PyFaulthandler_Init(void);
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extern void _PyFaulthandler_Fini(void);
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#ifdef WITH_THREAD
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extern void _PyGILState_Init(PyInterpreterState *, PyThreadState *);
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extern void _PyGILState_Fini(void);
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#endif /* WITH_THREAD */
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int Py_DebugFlag; /* Needed by parser.c */
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int Py_VerboseFlag; /* Needed by import.c */
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int Py_QuietFlag; /* Needed by sysmodule.c */
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int Py_InteractiveFlag; /* Needed by Py_FdIsInteractive() below */
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int Py_InspectFlag; /* Needed to determine whether to exit at SystemExit */
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int Py_NoSiteFlag; /* Suppress 'import site' */
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int Py_BytesWarningFlag; /* Warn on str(bytes) and str(buffer) */
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int Py_DontWriteBytecodeFlag; /* Suppress writing bytecode files (*.py[co]) */
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int Py_UseClassExceptionsFlag = 1; /* Needed by bltinmodule.c: deprecated */
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int Py_FrozenFlag; /* Needed by getpath.c */
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int Py_IgnoreEnvironmentFlag; /* e.g. PYTHONPATH, PYTHONHOME */
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int Py_NoUserSiteDirectory = 0; /* for -s and site.py */
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int Py_UnbufferedStdioFlag = 0; /* Unbuffered binary std{in,out,err} */
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int Py_HashRandomizationFlag = 0; /* for -R and PYTHONHASHSEED */
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PyThreadState *_Py_Finalizing = NULL;
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/* PyModule_GetWarningsModule is no longer necessary as of 2.6
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since _warnings is builtin. This API should not be used. */
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PyObject *
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PyModule_GetWarningsModule(void)
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{
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return PyImport_ImportModule("warnings");
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}
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static int initialized = 0;
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/* API to access the initialized flag -- useful for esoteric use */
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int
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Py_IsInitialized(void)
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{
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return initialized;
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}
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/* Global initializations. Can be undone by Py_Finalize(). Don't
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call this twice without an intervening Py_Finalize() call. When
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initializations fail, a fatal error is issued and the function does
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not return. On return, the first thread and interpreter state have
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been created.
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Locking: you must hold the interpreter lock while calling this.
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(If the lock has not yet been initialized, that's equivalent to
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having the lock, but you cannot use multiple threads.)
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*/
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static int
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add_flag(int flag, const char *envs)
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{
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int env = atoi(envs);
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if (flag < env)
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flag = env;
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if (flag < 1)
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flag = 1;
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return flag;
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}
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static char*
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get_codec_name(const char *encoding)
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{
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char *name_utf8, *name_str;
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PyObject *codec, *name = NULL;
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_Py_IDENTIFIER(name);
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codec = _PyCodec_Lookup(encoding);
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if (!codec)
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goto error;
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name = _PyObject_GetAttrId(codec, &PyId_name);
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Py_CLEAR(codec);
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if (!name)
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goto error;
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name_utf8 = _PyUnicode_AsString(name);
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if (name_utf8 == NULL)
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goto error;
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name_str = strdup(name_utf8);
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Py_DECREF(name);
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if (name_str == NULL) {
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PyErr_NoMemory();
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return NULL;
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}
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return name_str;
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error:
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Py_XDECREF(codec);
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Py_XDECREF(name);
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return NULL;
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}
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static char*
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get_locale_encoding(void)
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{
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#ifdef MS_WINDOWS
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char codepage[100];
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PyOS_snprintf(codepage, sizeof(codepage), "cp%d", GetACP());
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return get_codec_name(codepage);
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#elif defined(HAVE_LANGINFO_H) && defined(CODESET)
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char* codeset = nl_langinfo(CODESET);
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if (!codeset || codeset[0] == '\0') {
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PyErr_SetString(PyExc_ValueError, "CODESET is not set or empty");
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return NULL;
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}
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return get_codec_name(codeset);
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#else
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PyErr_SetNone(PyExc_NotImplementedError);
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return NULL;
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#endif
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}
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static void
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import_init(PyInterpreterState *interp, PyObject *sysmod)
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{
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PyObject *importlib;
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PyObject *impmod;
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PyObject *sys_modules;
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PyObject *value;
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/* Import _importlib through its frozen version, _frozen_importlib. */
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if (PyImport_ImportFrozenModule("_frozen_importlib") <= 0) {
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Py_FatalError("Py_Initialize: can't import _frozen_importlib");
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}
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else if (Py_VerboseFlag) {
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PySys_FormatStderr("import _frozen_importlib # frozen\n");
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}
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importlib = PyImport_AddModule("_frozen_importlib");
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if (importlib == NULL) {
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Py_FatalError("Py_Initialize: couldn't get _frozen_importlib from "
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"sys.modules");
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}
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interp->importlib = importlib;
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Py_INCREF(interp->importlib);
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/* Install _importlib as __import__ */
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impmod = PyInit_imp();
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if (impmod == NULL) {
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Py_FatalError("Py_Initialize: can't import imp");
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}
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else if (Py_VerboseFlag) {
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PySys_FormatStderr("import imp # builtin\n");
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}
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sys_modules = PyImport_GetModuleDict();
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if (Py_VerboseFlag) {
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PySys_FormatStderr("import sys # builtin\n");
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}
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if (PyDict_SetItemString(sys_modules, "_imp", impmod) < 0) {
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Py_FatalError("Py_Initialize: can't save _imp to sys.modules");
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}
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value = PyObject_CallMethod(importlib, "_install", "OO", sysmod, impmod);
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if (value == NULL) {
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PyErr_Print();
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Py_FatalError("Py_Initialize: importlib install failed");
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}
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Py_DECREF(value);
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Py_DECREF(impmod);
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_PyImportZip_Init();
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}
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void
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_Py_InitializeEx_Private(int install_sigs, int install_importlib)
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{
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PyInterpreterState *interp;
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PyThreadState *tstate;
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PyObject *bimod, *sysmod, *pstderr;
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char *p;
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extern void _Py_ReadyTypes(void);
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if (initialized)
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return;
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initialized = 1;
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_Py_Finalizing = NULL;
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#if defined(HAVE_LANGINFO_H) && defined(HAVE_SETLOCALE)
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/* Set up the LC_CTYPE locale, so we can obtain
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the locale's charset without having to switch
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locales. */
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setlocale(LC_CTYPE, "");
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#endif
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if ((p = Py_GETENV("PYTHONDEBUG")) && *p != '\0')
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Py_DebugFlag = add_flag(Py_DebugFlag, p);
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if ((p = Py_GETENV("PYTHONVERBOSE")) && *p != '\0')
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Py_VerboseFlag = add_flag(Py_VerboseFlag, p);
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if ((p = Py_GETENV("PYTHONOPTIMIZE")) && *p != '\0')
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Py_OptimizeFlag = add_flag(Py_OptimizeFlag, p);
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if ((p = Py_GETENV("PYTHONDONTWRITEBYTECODE")) && *p != '\0')
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Py_DontWriteBytecodeFlag = add_flag(Py_DontWriteBytecodeFlag, p);
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/* The variable is only tested for existence here; _PyRandom_Init will
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check its value further. */
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if ((p = Py_GETENV("PYTHONHASHSEED")) && *p != '\0')
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Py_HashRandomizationFlag = add_flag(Py_HashRandomizationFlag, p);
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_PyRandom_Init();
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interp = PyInterpreterState_New();
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if (interp == NULL)
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Py_FatalError("Py_Initialize: can't make first interpreter");
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tstate = PyThreadState_New(interp);
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if (tstate == NULL)
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Py_FatalError("Py_Initialize: can't make first thread");
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(void) PyThreadState_Swap(tstate);
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#ifdef WITH_THREAD
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/* We can't call _PyEval_FiniThreads() in Py_Finalize because
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destroying the GIL might fail when it is being referenced from
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another running thread (see issue #9901).
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Instead we destroy the previously created GIL here, which ensures
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that we can call Py_Initialize / Py_Finalize multiple times. */
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_PyEval_FiniThreads();
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/* Auto-thread-state API */
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_PyGILState_Init(interp, tstate);
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#endif /* WITH_THREAD */
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_Py_ReadyTypes();
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if (!_PyFrame_Init())
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Py_FatalError("Py_Initialize: can't init frames");
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if (!_PyLong_Init())
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Py_FatalError("Py_Initialize: can't init longs");
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if (!PyByteArray_Init())
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Py_FatalError("Py_Initialize: can't init bytearray");
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_PyFloat_Init();
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interp->modules = PyDict_New();
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if (interp->modules == NULL)
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Py_FatalError("Py_Initialize: can't make modules dictionary");
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/* Init Unicode implementation; relies on the codec registry */
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if (_PyUnicode_Init() < 0)
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Py_FatalError("Py_Initialize: can't initialize unicode");
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bimod = _PyBuiltin_Init();
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if (bimod == NULL)
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Py_FatalError("Py_Initialize: can't initialize builtins modules");
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_PyImport_FixupBuiltin(bimod, "builtins");
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interp->builtins = PyModule_GetDict(bimod);
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if (interp->builtins == NULL)
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Py_FatalError("Py_Initialize: can't initialize builtins dict");
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Py_INCREF(interp->builtins);
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/* initialize builtin exceptions */
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_PyExc_Init(bimod);
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sysmod = _PySys_Init();
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if (sysmod == NULL)
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Py_FatalError("Py_Initialize: can't initialize sys");
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interp->sysdict = PyModule_GetDict(sysmod);
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if (interp->sysdict == NULL)
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Py_FatalError("Py_Initialize: can't initialize sys dict");
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Py_INCREF(interp->sysdict);
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_PyImport_FixupBuiltin(sysmod, "sys");
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PySys_SetPath(Py_GetPath());
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PyDict_SetItemString(interp->sysdict, "modules",
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interp->modules);
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/* Set up a preliminary stderr printer until we have enough
|
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infrastructure for the io module in place. */
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pstderr = PyFile_NewStdPrinter(fileno(stderr));
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if (pstderr == NULL)
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Py_FatalError("Py_Initialize: can't set preliminary stderr");
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PySys_SetObject("stderr", pstderr);
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PySys_SetObject("__stderr__", pstderr);
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Py_DECREF(pstderr);
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_PyImport_Init();
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_PyImportHooks_Init();
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/* Initialize _warnings. */
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_PyWarnings_Init();
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if (!install_importlib)
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return;
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import_init(interp, sysmod);
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|
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/* initialize the faulthandler module */
|
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if (_PyFaulthandler_Init())
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Py_FatalError("Py_Initialize: can't initialize faulthandler");
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_PyTime_Init();
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if (initfsencoding(interp) < 0)
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Py_FatalError("Py_Initialize: unable to load the file system codec");
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if (install_sigs)
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initsigs(); /* Signal handling stuff, including initintr() */
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initmain(interp); /* Module __main__ */
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if (initstdio() < 0)
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Py_FatalError(
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"Py_Initialize: can't initialize sys standard streams");
|
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|
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/* Initialize warnings. */
|
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if (PySys_HasWarnOptions()) {
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PyObject *warnings_module = PyImport_ImportModule("warnings");
|
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if (warnings_module == NULL) {
|
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fprintf(stderr, "'import warnings' failed; traceback:\n");
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PyErr_Print();
|
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}
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Py_XDECREF(warnings_module);
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}
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if (!Py_NoSiteFlag)
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initsite(); /* Module site */
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}
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void
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Py_InitializeEx(int install_sigs)
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{
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_Py_InitializeEx_Private(install_sigs, 1);
|
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}
|
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|
|
void
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Py_Initialize(void)
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{
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Py_InitializeEx(1);
|
|
}
|
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|
|
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#ifdef COUNT_ALLOCS
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extern void dump_counts(FILE*);
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|
#endif
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|
/* Flush stdout and stderr */
|
|
|
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static int
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file_is_closed(PyObject *fobj)
|
|
{
|
|
int r;
|
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PyObject *tmp = PyObject_GetAttrString(fobj, "closed");
|
|
if (tmp == NULL) {
|
|
PyErr_Clear();
|
|
return 0;
|
|
}
|
|
r = PyObject_IsTrue(tmp);
|
|
Py_DECREF(tmp);
|
|
if (r < 0)
|
|
PyErr_Clear();
|
|
return r > 0;
|
|
}
|
|
|
|
static void
|
|
flush_std_files(void)
|
|
{
|
|
PyObject *fout = PySys_GetObject("stdout");
|
|
PyObject *ferr = PySys_GetObject("stderr");
|
|
PyObject *tmp;
|
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_Py_IDENTIFIER(flush);
|
|
|
|
if (fout != NULL && fout != Py_None && !file_is_closed(fout)) {
|
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tmp = _PyObject_CallMethodId(fout, &PyId_flush, "");
|
|
if (tmp == NULL)
|
|
PyErr_WriteUnraisable(fout);
|
|
else
|
|
Py_DECREF(tmp);
|
|
}
|
|
|
|
if (ferr != NULL && ferr != Py_None && !file_is_closed(ferr)) {
|
|
tmp = _PyObject_CallMethodId(ferr, &PyId_flush, "");
|
|
if (tmp == NULL)
|
|
PyErr_Clear();
|
|
else
|
|
Py_DECREF(tmp);
|
|
}
|
|
}
|
|
|
|
/* Undo the effect of Py_Initialize().
|
|
|
|
Beware: if multiple interpreter and/or thread states exist, these
|
|
are not wiped out; only the current thread and interpreter state
|
|
are deleted. But since everything else is deleted, those other
|
|
interpreter and thread states should no longer be used.
|
|
|
|
(XXX We should do better, e.g. wipe out all interpreters and
|
|
threads.)
|
|
|
|
Locking: as above.
|
|
|
|
*/
|
|
|
|
void
|
|
Py_Finalize(void)
|
|
{
|
|
PyInterpreterState *interp;
|
|
PyThreadState *tstate;
|
|
|
|
if (!initialized)
|
|
return;
|
|
|
|
wait_for_thread_shutdown();
|
|
|
|
/* The interpreter is still entirely intact at this point, and the
|
|
* exit funcs may be relying on that. In particular, if some thread
|
|
* or exit func is still waiting to do an import, the import machinery
|
|
* expects Py_IsInitialized() to return true. So don't say the
|
|
* interpreter is uninitialized until after the exit funcs have run.
|
|
* Note that Threading.py uses an exit func to do a join on all the
|
|
* threads created thru it, so this also protects pending imports in
|
|
* the threads created via Threading.
|
|
*/
|
|
call_py_exitfuncs();
|
|
|
|
/* Get current thread state and interpreter pointer */
|
|
tstate = PyThreadState_GET();
|
|
interp = tstate->interp;
|
|
|
|
/* Remaining threads (e.g. daemon threads) will automatically exit
|
|
after taking the GIL (in PyEval_RestoreThread()). */
|
|
_Py_Finalizing = tstate;
|
|
initialized = 0;
|
|
|
|
/* Flush stdout+stderr */
|
|
flush_std_files();
|
|
|
|
/* Disable signal handling */
|
|
PyOS_FiniInterrupts();
|
|
|
|
/* Clear type lookup cache */
|
|
PyType_ClearCache();
|
|
|
|
/* Collect garbage. This may call finalizers; it's nice to call these
|
|
* before all modules are destroyed.
|
|
* XXX If a __del__ or weakref callback is triggered here, and tries to
|
|
* XXX import a module, bad things can happen, because Python no
|
|
* XXX longer believes it's initialized.
|
|
* XXX Fatal Python error: Interpreter not initialized (version mismatch?)
|
|
* XXX is easy to provoke that way. I've also seen, e.g.,
|
|
* XXX Exception exceptions.ImportError: 'No module named sha'
|
|
* XXX in <function callback at 0x008F5718> ignored
|
|
* XXX but I'm unclear on exactly how that one happens. In any case,
|
|
* XXX I haven't seen a real-life report of either of these.
|
|
*/
|
|
PyGC_Collect();
|
|
#ifdef COUNT_ALLOCS
|
|
/* With COUNT_ALLOCS, it helps to run GC multiple times:
|
|
each collection might release some types from the type
|
|
list, so they become garbage. */
|
|
while (PyGC_Collect() > 0)
|
|
/* nothing */;
|
|
#endif
|
|
/* We run this while most interpreter state is still alive, so that
|
|
debug information can be printed out */
|
|
_PyGC_Fini();
|
|
|
|
/* Destroy all modules */
|
|
PyImport_Cleanup();
|
|
|
|
/* Flush stdout+stderr (again, in case more was printed) */
|
|
flush_std_files();
|
|
|
|
/* Collect final garbage. This disposes of cycles created by
|
|
* class definitions, for example.
|
|
* XXX This is disabled because it caused too many problems. If
|
|
* XXX a __del__ or weakref callback triggers here, Python code has
|
|
* XXX a hard time running, because even the sys module has been
|
|
* XXX cleared out (sys.stdout is gone, sys.excepthook is gone, etc).
|
|
* XXX One symptom is a sequence of information-free messages
|
|
* XXX coming from threads (if a __del__ or callback is invoked,
|
|
* XXX other threads can execute too, and any exception they encounter
|
|
* XXX triggers a comedy of errors as subsystem after subsystem
|
|
* XXX fails to find what it *expects* to find in sys to help report
|
|
* XXX the exception and consequent unexpected failures). I've also
|
|
* XXX seen segfaults then, after adding print statements to the
|
|
* XXX Python code getting called.
|
|
*/
|
|
#if 0
|
|
PyGC_Collect();
|
|
#endif
|
|
|
|
/* Destroy the database used by _PyImport_{Fixup,Find}Extension */
|
|
_PyImport_Fini();
|
|
|
|
/* unload faulthandler module */
|
|
_PyFaulthandler_Fini();
|
|
|
|
/* Debugging stuff */
|
|
#ifdef COUNT_ALLOCS
|
|
dump_counts(stdout);
|
|
#endif
|
|
|
|
PRINT_TOTAL_REFS();
|
|
|
|
#ifdef Py_TRACE_REFS
|
|
/* Display all objects still alive -- this can invoke arbitrary
|
|
* __repr__ overrides, so requires a mostly-intact interpreter.
|
|
* Alas, a lot of stuff may still be alive now that will be cleaned
|
|
* up later.
|
|
*/
|
|
if (Py_GETENV("PYTHONDUMPREFS"))
|
|
_Py_PrintReferences(stderr);
|
|
#endif /* Py_TRACE_REFS */
|
|
|
|
/* Clear interpreter state */
|
|
PyInterpreterState_Clear(interp);
|
|
|
|
/* Now we decref the exception classes. After this point nothing
|
|
can raise an exception. That's okay, because each Fini() method
|
|
below has been checked to make sure no exceptions are ever
|
|
raised.
|
|
*/
|
|
|
|
_PyExc_Fini();
|
|
|
|
/* Cleanup auto-thread-state */
|
|
#ifdef WITH_THREAD
|
|
_PyGILState_Fini();
|
|
#endif /* WITH_THREAD */
|
|
|
|
/* Delete current thread */
|
|
PyThreadState_Swap(NULL);
|
|
PyInterpreterState_Delete(interp);
|
|
|
|
/* Sundry finalizers */
|
|
PyMethod_Fini();
|
|
PyFrame_Fini();
|
|
PyCFunction_Fini();
|
|
PyTuple_Fini();
|
|
PyList_Fini();
|
|
PySet_Fini();
|
|
PyBytes_Fini();
|
|
PyByteArray_Fini();
|
|
PyLong_Fini();
|
|
PyFloat_Fini();
|
|
PyDict_Fini();
|
|
PySlice_Fini();
|
|
|
|
/* Cleanup Unicode implementation */
|
|
_PyUnicode_Fini();
|
|
|
|
/* reset file system default encoding */
|
|
if (!Py_HasFileSystemDefaultEncoding && Py_FileSystemDefaultEncoding) {
|
|
free((char*)Py_FileSystemDefaultEncoding);
|
|
Py_FileSystemDefaultEncoding = NULL;
|
|
}
|
|
|
|
/* XXX Still allocated:
|
|
- various static ad-hoc pointers to interned strings
|
|
- int and float free list blocks
|
|
- whatever various modules and libraries allocate
|
|
*/
|
|
|
|
PyGrammar_RemoveAccelerators(&_PyParser_Grammar);
|
|
|
|
#ifdef Py_TRACE_REFS
|
|
/* Display addresses (& refcnts) of all objects still alive.
|
|
* An address can be used to find the repr of the object, printed
|
|
* above by _Py_PrintReferences.
|
|
*/
|
|
if (Py_GETENV("PYTHONDUMPREFS"))
|
|
_Py_PrintReferenceAddresses(stderr);
|
|
#endif /* Py_TRACE_REFS */
|
|
#ifdef PYMALLOC_DEBUG
|
|
if (Py_GETENV("PYTHONMALLOCSTATS"))
|
|
_PyObject_DebugMallocStats(stderr);
|
|
#endif
|
|
|
|
call_ll_exitfuncs();
|
|
}
|
|
|
|
/* Create and initialize a new interpreter and thread, and return the
|
|
new thread. This requires that Py_Initialize() has been called
|
|
first.
|
|
|
|
Unsuccessful initialization yields a NULL pointer. Note that *no*
|
|
exception information is available even in this case -- the
|
|
exception information is held in the thread, and there is no
|
|
thread.
|
|
|
|
Locking: as above.
|
|
|
|
*/
|
|
|
|
PyThreadState *
|
|
Py_NewInterpreter(void)
|
|
{
|
|
PyInterpreterState *interp;
|
|
PyThreadState *tstate, *save_tstate;
|
|
PyObject *bimod, *sysmod;
|
|
|
|
if (!initialized)
|
|
Py_FatalError("Py_NewInterpreter: call Py_Initialize first");
|
|
|
|
interp = PyInterpreterState_New();
|
|
if (interp == NULL)
|
|
return NULL;
|
|
|
|
tstate = PyThreadState_New(interp);
|
|
if (tstate == NULL) {
|
|
PyInterpreterState_Delete(interp);
|
|
return NULL;
|
|
}
|
|
|
|
save_tstate = PyThreadState_Swap(tstate);
|
|
|
|
/* XXX The following is lax in error checking */
|
|
|
|
interp->modules = PyDict_New();
|
|
|
|
bimod = _PyImport_FindBuiltin("builtins");
|
|
if (bimod != NULL) {
|
|
interp->builtins = PyModule_GetDict(bimod);
|
|
if (interp->builtins == NULL)
|
|
goto handle_error;
|
|
Py_INCREF(interp->builtins);
|
|
}
|
|
|
|
/* initialize builtin exceptions */
|
|
_PyExc_Init(bimod);
|
|
|
|
sysmod = _PyImport_FindBuiltin("sys");
|
|
if (bimod != NULL && sysmod != NULL) {
|
|
PyObject *pstderr;
|
|
|
|
interp->sysdict = PyModule_GetDict(sysmod);
|
|
if (interp->sysdict == NULL)
|
|
goto handle_error;
|
|
Py_INCREF(interp->sysdict);
|
|
PySys_SetPath(Py_GetPath());
|
|
PyDict_SetItemString(interp->sysdict, "modules",
|
|
interp->modules);
|
|
/* Set up a preliminary stderr printer until we have enough
|
|
infrastructure for the io module in place. */
|
|
pstderr = PyFile_NewStdPrinter(fileno(stderr));
|
|
if (pstderr == NULL)
|
|
Py_FatalError("Py_Initialize: can't set preliminary stderr");
|
|
PySys_SetObject("stderr", pstderr);
|
|
PySys_SetObject("__stderr__", pstderr);
|
|
Py_DECREF(pstderr);
|
|
|
|
_PyImportHooks_Init();
|
|
|
|
import_init(interp, sysmod);
|
|
|
|
if (initfsencoding(interp) < 0)
|
|
goto handle_error;
|
|
|
|
if (initstdio() < 0)
|
|
Py_FatalError(
|
|
"Py_Initialize: can't initialize sys standard streams");
|
|
initmain(interp);
|
|
if (!Py_NoSiteFlag)
|
|
initsite();
|
|
}
|
|
|
|
if (!PyErr_Occurred())
|
|
return tstate;
|
|
|
|
handle_error:
|
|
/* Oops, it didn't work. Undo it all. */
|
|
|
|
PyErr_PrintEx(0);
|
|
PyThreadState_Clear(tstate);
|
|
PyThreadState_Swap(save_tstate);
|
|
PyThreadState_Delete(tstate);
|
|
PyInterpreterState_Delete(interp);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Delete an interpreter and its last thread. This requires that the
|
|
given thread state is current, that the thread has no remaining
|
|
frames, and that it is its interpreter's only remaining thread.
|
|
It is a fatal error to violate these constraints.
|
|
|
|
(Py_Finalize() doesn't have these constraints -- it zaps
|
|
everything, regardless.)
|
|
|
|
Locking: as above.
|
|
|
|
*/
|
|
|
|
void
|
|
Py_EndInterpreter(PyThreadState *tstate)
|
|
{
|
|
PyInterpreterState *interp = tstate->interp;
|
|
|
|
if (tstate != PyThreadState_GET())
|
|
Py_FatalError("Py_EndInterpreter: thread is not current");
|
|
if (tstate->frame != NULL)
|
|
Py_FatalError("Py_EndInterpreter: thread still has a frame");
|
|
if (tstate != interp->tstate_head || tstate->next != NULL)
|
|
Py_FatalError("Py_EndInterpreter: not the last thread");
|
|
|
|
PyImport_Cleanup();
|
|
PyInterpreterState_Clear(interp);
|
|
PyThreadState_Swap(NULL);
|
|
PyInterpreterState_Delete(interp);
|
|
}
|
|
|
|
#ifdef MS_WINDOWS
|
|
static wchar_t *progname = L"python";
|
|
#else
|
|
static wchar_t *progname = L"python3";
|
|
#endif
|
|
|
|
void
|
|
Py_SetProgramName(wchar_t *pn)
|
|
{
|
|
if (pn && *pn)
|
|
progname = pn;
|
|
}
|
|
|
|
wchar_t *
|
|
Py_GetProgramName(void)
|
|
{
|
|
return progname;
|
|
}
|
|
|
|
static wchar_t *default_home = NULL;
|
|
static wchar_t env_home[PATH_MAX+1];
|
|
|
|
void
|
|
Py_SetPythonHome(wchar_t *home)
|
|
{
|
|
default_home = home;
|
|
}
|
|
|
|
wchar_t *
|
|
Py_GetPythonHome(void)
|
|
{
|
|
wchar_t *home = default_home;
|
|
if (home == NULL && !Py_IgnoreEnvironmentFlag) {
|
|
char* chome = Py_GETENV("PYTHONHOME");
|
|
if (chome) {
|
|
size_t r = mbstowcs(env_home, chome, PATH_MAX+1);
|
|
if (r != (size_t)-1 && r <= PATH_MAX)
|
|
home = env_home;
|
|
}
|
|
|
|
}
|
|
return home;
|
|
}
|
|
|
|
/* Create __main__ module */
|
|
|
|
static void
|
|
initmain(PyInterpreterState *interp)
|
|
{
|
|
PyObject *m, *d;
|
|
m = PyImport_AddModule("__main__");
|
|
if (m == NULL)
|
|
Py_FatalError("can't create __main__ module");
|
|
d = PyModule_GetDict(m);
|
|
if (PyDict_GetItemString(d, "__builtins__") == NULL) {
|
|
PyObject *bimod = PyImport_ImportModule("builtins");
|
|
if (bimod == NULL) {
|
|
Py_FatalError("Failed to retrieve builtins module");
|
|
}
|
|
if (PyDict_SetItemString(d, "__builtins__", bimod) < 0) {
|
|
Py_FatalError("Failed to initialize __main__.__builtins__");
|
|
}
|
|
Py_DECREF(bimod);
|
|
}
|
|
/* Main is a little special - imp.is_builtin("__main__") will return
|
|
* False, but BuiltinImporter is still the most appropriate initial
|
|
* setting for its __loader__ attribute. A more suitable value will
|
|
* be set if __main__ gets further initialized later in the startup
|
|
* process.
|
|
*/
|
|
if (PyDict_GetItemString(d, "__loader__") == NULL) {
|
|
PyObject *loader = PyObject_GetAttrString(interp->importlib,
|
|
"BuiltinImporter");
|
|
if (loader == NULL) {
|
|
Py_FatalError("Failed to retrieve BuiltinImporter");
|
|
}
|
|
if (PyDict_SetItemString(d, "__loader__", loader) < 0) {
|
|
Py_FatalError("Failed to initialize __main__.__loader__");
|
|
}
|
|
Py_DECREF(loader);
|
|
}
|
|
}
|
|
|
|
static int
|
|
initfsencoding(PyInterpreterState *interp)
|
|
{
|
|
PyObject *codec;
|
|
|
|
if (Py_FileSystemDefaultEncoding == NULL)
|
|
{
|
|
Py_FileSystemDefaultEncoding = get_locale_encoding();
|
|
if (Py_FileSystemDefaultEncoding == NULL)
|
|
Py_FatalError("Py_Initialize: Unable to get the locale encoding");
|
|
|
|
Py_HasFileSystemDefaultEncoding = 0;
|
|
interp->fscodec_initialized = 1;
|
|
return 0;
|
|
}
|
|
|
|
/* the encoding is mbcs, utf-8 or ascii */
|
|
codec = _PyCodec_Lookup(Py_FileSystemDefaultEncoding);
|
|
if (!codec) {
|
|
/* Such error can only occurs in critical situations: no more
|
|
* memory, import a module of the standard library failed,
|
|
* etc. */
|
|
return -1;
|
|
}
|
|
Py_DECREF(codec);
|
|
interp->fscodec_initialized = 1;
|
|
return 0;
|
|
}
|
|
|
|
/* Import the site module (not into __main__ though) */
|
|
|
|
static void
|
|
initsite(void)
|
|
{
|
|
PyObject *m;
|
|
m = PyImport_ImportModule("site");
|
|
if (m == NULL) {
|
|
PyErr_Print();
|
|
Py_Finalize();
|
|
exit(1);
|
|
}
|
|
else {
|
|
Py_DECREF(m);
|
|
}
|
|
}
|
|
|
|
static PyObject*
|
|
create_stdio(PyObject* io,
|
|
int fd, int write_mode, char* name,
|
|
char* encoding, char* errors)
|
|
{
|
|
PyObject *buf = NULL, *stream = NULL, *text = NULL, *raw = NULL, *res;
|
|
const char* mode;
|
|
const char* newline;
|
|
PyObject *line_buffering;
|
|
int buffering, isatty;
|
|
_Py_IDENTIFIER(open);
|
|
_Py_IDENTIFIER(isatty);
|
|
_Py_IDENTIFIER(TextIOWrapper);
|
|
_Py_IDENTIFIER(name);
|
|
_Py_IDENTIFIER(mode);
|
|
|
|
/* stdin is always opened in buffered mode, first because it shouldn't
|
|
make a difference in common use cases, second because TextIOWrapper
|
|
depends on the presence of a read1() method which only exists on
|
|
buffered streams.
|
|
*/
|
|
if (Py_UnbufferedStdioFlag && write_mode)
|
|
buffering = 0;
|
|
else
|
|
buffering = -1;
|
|
if (write_mode)
|
|
mode = "wb";
|
|
else
|
|
mode = "rb";
|
|
buf = _PyObject_CallMethodId(io, &PyId_open, "isiOOOi",
|
|
fd, mode, buffering,
|
|
Py_None, Py_None, Py_None, 0);
|
|
if (buf == NULL)
|
|
goto error;
|
|
|
|
if (buffering) {
|
|
_Py_IDENTIFIER(raw);
|
|
raw = _PyObject_GetAttrId(buf, &PyId_raw);
|
|
if (raw == NULL)
|
|
goto error;
|
|
}
|
|
else {
|
|
raw = buf;
|
|
Py_INCREF(raw);
|
|
}
|
|
|
|
text = PyUnicode_FromString(name);
|
|
if (text == NULL || _PyObject_SetAttrId(raw, &PyId_name, text) < 0)
|
|
goto error;
|
|
res = _PyObject_CallMethodId(raw, &PyId_isatty, "");
|
|
if (res == NULL)
|
|
goto error;
|
|
isatty = PyObject_IsTrue(res);
|
|
Py_DECREF(res);
|
|
if (isatty == -1)
|
|
goto error;
|
|
if (isatty || Py_UnbufferedStdioFlag)
|
|
line_buffering = Py_True;
|
|
else
|
|
line_buffering = Py_False;
|
|
|
|
Py_CLEAR(raw);
|
|
Py_CLEAR(text);
|
|
|
|
#ifdef MS_WINDOWS
|
|
/* sys.stdin: enable universal newline mode, translate "\r\n" and "\r"
|
|
newlines to "\n".
|
|
sys.stdout and sys.stderr: translate "\n" to "\r\n". */
|
|
newline = NULL;
|
|
#else
|
|
/* sys.stdin: split lines at "\n".
|
|
sys.stdout and sys.stderr: don't translate newlines (use "\n"). */
|
|
newline = "\n";
|
|
#endif
|
|
|
|
stream = _PyObject_CallMethodId(io, &PyId_TextIOWrapper, "OsssO",
|
|
buf, encoding, errors,
|
|
newline, line_buffering);
|
|
Py_CLEAR(buf);
|
|
if (stream == NULL)
|
|
goto error;
|
|
|
|
if (write_mode)
|
|
mode = "w";
|
|
else
|
|
mode = "r";
|
|
text = PyUnicode_FromString(mode);
|
|
if (!text || _PyObject_SetAttrId(stream, &PyId_mode, text) < 0)
|
|
goto error;
|
|
Py_CLEAR(text);
|
|
return stream;
|
|
|
|
error:
|
|
Py_XDECREF(buf);
|
|
Py_XDECREF(stream);
|
|
Py_XDECREF(text);
|
|
Py_XDECREF(raw);
|
|
return NULL;
|
|
}
|
|
|
|
static int
|
|
is_valid_fd(int fd)
|
|
{
|
|
int dummy_fd;
|
|
if (fd < 0 || !_PyVerify_fd(fd))
|
|
return 0;
|
|
dummy_fd = dup(fd);
|
|
if (dummy_fd < 0)
|
|
return 0;
|
|
close(dummy_fd);
|
|
return 1;
|
|
}
|
|
|
|
/* Initialize sys.stdin, stdout, stderr and builtins.open */
|
|
static int
|
|
initstdio(void)
|
|
{
|
|
PyObject *iomod = NULL, *wrapper;
|
|
PyObject *bimod = NULL;
|
|
PyObject *m;
|
|
PyObject *std = NULL;
|
|
int status = 0, fd;
|
|
PyObject * encoding_attr;
|
|
char *encoding = NULL, *errors;
|
|
|
|
/* Hack to avoid a nasty recursion issue when Python is invoked
|
|
in verbose mode: pre-import the Latin-1 and UTF-8 codecs */
|
|
if ((m = PyImport_ImportModule("encodings.utf_8")) == NULL) {
|
|
goto error;
|
|
}
|
|
Py_DECREF(m);
|
|
|
|
if (!(m = PyImport_ImportModule("encodings.latin_1"))) {
|
|
goto error;
|
|
}
|
|
Py_DECREF(m);
|
|
|
|
if (!(bimod = PyImport_ImportModule("builtins"))) {
|
|
goto error;
|
|
}
|
|
|
|
if (!(iomod = PyImport_ImportModule("io"))) {
|
|
goto error;
|
|
}
|
|
if (!(wrapper = PyObject_GetAttrString(iomod, "OpenWrapper"))) {
|
|
goto error;
|
|
}
|
|
|
|
/* Set builtins.open */
|
|
if (PyObject_SetAttrString(bimod, "open", wrapper) == -1) {
|
|
Py_DECREF(wrapper);
|
|
goto error;
|
|
}
|
|
Py_DECREF(wrapper);
|
|
|
|
encoding = Py_GETENV("PYTHONIOENCODING");
|
|
errors = NULL;
|
|
if (encoding) {
|
|
encoding = strdup(encoding);
|
|
errors = strchr(encoding, ':');
|
|
if (errors) {
|
|
*errors = '\0';
|
|
errors++;
|
|
}
|
|
}
|
|
|
|
/* Set sys.stdin */
|
|
fd = fileno(stdin);
|
|
/* Under some conditions stdin, stdout and stderr may not be connected
|
|
* and fileno() may point to an invalid file descriptor. For example
|
|
* GUI apps don't have valid standard streams by default.
|
|
*/
|
|
if (!is_valid_fd(fd)) {
|
|
std = Py_None;
|
|
Py_INCREF(std);
|
|
}
|
|
else {
|
|
std = create_stdio(iomod, fd, 0, "<stdin>", encoding, errors);
|
|
if (std == NULL)
|
|
goto error;
|
|
} /* if (fd < 0) */
|
|
PySys_SetObject("__stdin__", std);
|
|
PySys_SetObject("stdin", std);
|
|
Py_DECREF(std);
|
|
|
|
/* Set sys.stdout */
|
|
fd = fileno(stdout);
|
|
if (!is_valid_fd(fd)) {
|
|
std = Py_None;
|
|
Py_INCREF(std);
|
|
}
|
|
else {
|
|
std = create_stdio(iomod, fd, 1, "<stdout>", encoding, errors);
|
|
if (std == NULL)
|
|
goto error;
|
|
} /* if (fd < 0) */
|
|
PySys_SetObject("__stdout__", std);
|
|
PySys_SetObject("stdout", std);
|
|
Py_DECREF(std);
|
|
|
|
#if 1 /* Disable this if you have trouble debugging bootstrap stuff */
|
|
/* Set sys.stderr, replaces the preliminary stderr */
|
|
fd = fileno(stderr);
|
|
if (!is_valid_fd(fd)) {
|
|
std = Py_None;
|
|
Py_INCREF(std);
|
|
}
|
|
else {
|
|
std = create_stdio(iomod, fd, 1, "<stderr>", encoding, "backslashreplace");
|
|
if (std == NULL)
|
|
goto error;
|
|
} /* if (fd < 0) */
|
|
|
|
/* Same as hack above, pre-import stderr's codec to avoid recursion
|
|
when import.c tries to write to stderr in verbose mode. */
|
|
encoding_attr = PyObject_GetAttrString(std, "encoding");
|
|
if (encoding_attr != NULL) {
|
|
const char * encoding;
|
|
encoding = _PyUnicode_AsString(encoding_attr);
|
|
if (encoding != NULL) {
|
|
PyObject *codec_info = _PyCodec_Lookup(encoding);
|
|
Py_XDECREF(codec_info);
|
|
}
|
|
Py_DECREF(encoding_attr);
|
|
}
|
|
PyErr_Clear(); /* Not a fatal error if codec isn't available */
|
|
|
|
PySys_SetObject("__stderr__", std);
|
|
PySys_SetObject("stderr", std);
|
|
Py_DECREF(std);
|
|
#endif
|
|
|
|
if (0) {
|
|
error:
|
|
status = -1;
|
|
}
|
|
|
|
if (encoding)
|
|
free(encoding);
|
|
Py_XDECREF(bimod);
|
|
Py_XDECREF(iomod);
|
|
return status;
|
|
}
|
|
|
|
/* Parse input from a file and execute it */
|
|
|
|
int
|
|
PyRun_AnyFileExFlags(FILE *fp, const char *filename, int closeit,
|
|
PyCompilerFlags *flags)
|
|
{
|
|
if (filename == NULL)
|
|
filename = "???";
|
|
if (Py_FdIsInteractive(fp, filename)) {
|
|
int err = PyRun_InteractiveLoopFlags(fp, filename, flags);
|
|
if (closeit)
|
|
fclose(fp);
|
|
return err;
|
|
}
|
|
else
|
|
return PyRun_SimpleFileExFlags(fp, filename, closeit, flags);
|
|
}
|
|
|
|
int
|
|
PyRun_InteractiveLoopFlags(FILE *fp, const char *filename, PyCompilerFlags *flags)
|
|
{
|
|
PyObject *v;
|
|
int ret;
|
|
PyCompilerFlags local_flags;
|
|
|
|
if (flags == NULL) {
|
|
flags = &local_flags;
|
|
local_flags.cf_flags = 0;
|
|
}
|
|
v = PySys_GetObject("ps1");
|
|
if (v == NULL) {
|
|
PySys_SetObject("ps1", v = PyUnicode_FromString(">>> "));
|
|
Py_XDECREF(v);
|
|
}
|
|
v = PySys_GetObject("ps2");
|
|
if (v == NULL) {
|
|
PySys_SetObject("ps2", v = PyUnicode_FromString("... "));
|
|
Py_XDECREF(v);
|
|
}
|
|
for (;;) {
|
|
ret = PyRun_InteractiveOneFlags(fp, filename, flags);
|
|
PRINT_TOTAL_REFS();
|
|
if (ret == E_EOF)
|
|
return 0;
|
|
/*
|
|
if (ret == E_NOMEM)
|
|
return -1;
|
|
*/
|
|
}
|
|
}
|
|
|
|
/* compute parser flags based on compiler flags */
|
|
static int PARSER_FLAGS(PyCompilerFlags *flags)
|
|
{
|
|
int parser_flags = 0;
|
|
if (!flags)
|
|
return 0;
|
|
if (flags->cf_flags & PyCF_DONT_IMPLY_DEDENT)
|
|
parser_flags |= PyPARSE_DONT_IMPLY_DEDENT;
|
|
if (flags->cf_flags & PyCF_IGNORE_COOKIE)
|
|
parser_flags |= PyPARSE_IGNORE_COOKIE;
|
|
if (flags->cf_flags & CO_FUTURE_BARRY_AS_BDFL)
|
|
parser_flags |= PyPARSE_BARRY_AS_BDFL;
|
|
return parser_flags;
|
|
}
|
|
|
|
#if 0
|
|
/* Keep an example of flags with future keyword support. */
|
|
#define PARSER_FLAGS(flags) \
|
|
((flags) ? ((((flags)->cf_flags & PyCF_DONT_IMPLY_DEDENT) ? \
|
|
PyPARSE_DONT_IMPLY_DEDENT : 0) \
|
|
| ((flags)->cf_flags & CO_FUTURE_WITH_STATEMENT ? \
|
|
PyPARSE_WITH_IS_KEYWORD : 0)) : 0)
|
|
#endif
|
|
|
|
int
|
|
PyRun_InteractiveOneFlags(FILE *fp, const char *filename, PyCompilerFlags *flags)
|
|
{
|
|
PyObject *m, *d, *v, *w, *oenc = NULL;
|
|
mod_ty mod;
|
|
PyArena *arena;
|
|
char *ps1 = "", *ps2 = "", *enc = NULL;
|
|
int errcode = 0;
|
|
_Py_IDENTIFIER(encoding);
|
|
|
|
if (fp == stdin) {
|
|
/* Fetch encoding from sys.stdin */
|
|
v = PySys_GetObject("stdin");
|
|
if (v == NULL || v == Py_None)
|
|
return -1;
|
|
oenc = _PyObject_GetAttrId(v, &PyId_encoding);
|
|
if (!oenc)
|
|
return -1;
|
|
enc = _PyUnicode_AsString(oenc);
|
|
if (enc == NULL)
|
|
return -1;
|
|
}
|
|
v = PySys_GetObject("ps1");
|
|
if (v != NULL) {
|
|
v = PyObject_Str(v);
|
|
if (v == NULL)
|
|
PyErr_Clear();
|
|
else if (PyUnicode_Check(v)) {
|
|
ps1 = _PyUnicode_AsString(v);
|
|
if (ps1 == NULL) {
|
|
PyErr_Clear();
|
|
ps1 = "";
|
|
}
|
|
}
|
|
}
|
|
w = PySys_GetObject("ps2");
|
|
if (w != NULL) {
|
|
w = PyObject_Str(w);
|
|
if (w == NULL)
|
|
PyErr_Clear();
|
|
else if (PyUnicode_Check(w)) {
|
|
ps2 = _PyUnicode_AsString(w);
|
|
if (ps2 == NULL) {
|
|
PyErr_Clear();
|
|
ps2 = "";
|
|
}
|
|
}
|
|
}
|
|
arena = PyArena_New();
|
|
if (arena == NULL) {
|
|
Py_XDECREF(v);
|
|
Py_XDECREF(w);
|
|
Py_XDECREF(oenc);
|
|
return -1;
|
|
}
|
|
mod = PyParser_ASTFromFile(fp, filename, enc,
|
|
Py_single_input, ps1, ps2,
|
|
flags, &errcode, arena);
|
|
Py_XDECREF(v);
|
|
Py_XDECREF(w);
|
|
Py_XDECREF(oenc);
|
|
if (mod == NULL) {
|
|
PyArena_Free(arena);
|
|
if (errcode == E_EOF) {
|
|
PyErr_Clear();
|
|
return E_EOF;
|
|
}
|
|
PyErr_Print();
|
|
return -1;
|
|
}
|
|
m = PyImport_AddModule("__main__");
|
|
if (m == NULL) {
|
|
PyArena_Free(arena);
|
|
return -1;
|
|
}
|
|
d = PyModule_GetDict(m);
|
|
v = run_mod(mod, filename, d, d, flags, arena);
|
|
PyArena_Free(arena);
|
|
flush_io();
|
|
if (v == NULL) {
|
|
PyErr_Print();
|
|
return -1;
|
|
}
|
|
Py_DECREF(v);
|
|
return 0;
|
|
}
|
|
|
|
/* Check whether a file maybe a pyc file: Look at the extension,
|
|
the file type, and, if we may close it, at the first few bytes. */
|
|
|
|
static int
|
|
maybe_pyc_file(FILE *fp, const char* filename, const char* ext, int closeit)
|
|
{
|
|
if (strcmp(ext, ".pyc") == 0 || strcmp(ext, ".pyo") == 0)
|
|
return 1;
|
|
|
|
/* Only look into the file if we are allowed to close it, since
|
|
it then should also be seekable. */
|
|
if (closeit) {
|
|
/* Read only two bytes of the magic. If the file was opened in
|
|
text mode, the bytes 3 and 4 of the magic (\r\n) might not
|
|
be read as they are on disk. */
|
|
unsigned int halfmagic = PyImport_GetMagicNumber() & 0xFFFF;
|
|
unsigned char buf[2];
|
|
/* Mess: In case of -x, the stream is NOT at its start now,
|
|
and ungetc() was used to push back the first newline,
|
|
which makes the current stream position formally undefined,
|
|
and a x-platform nightmare.
|
|
Unfortunately, we have no direct way to know whether -x
|
|
was specified. So we use a terrible hack: if the current
|
|
stream position is not 0, we assume -x was specified, and
|
|
give up. Bug 132850 on SourceForge spells out the
|
|
hopelessness of trying anything else (fseek and ftell
|
|
don't work predictably x-platform for text-mode files).
|
|
*/
|
|
int ispyc = 0;
|
|
if (ftell(fp) == 0) {
|
|
if (fread(buf, 1, 2, fp) == 2 &&
|
|
((unsigned int)buf[1]<<8 | buf[0]) == halfmagic)
|
|
ispyc = 1;
|
|
rewind(fp);
|
|
}
|
|
return ispyc;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
static set_main_loader(PyObject *d, const char *filename, const char *loader_name)
|
|
{
|
|
PyInterpreterState *interp;
|
|
PyThreadState *tstate;
|
|
PyObject *loader_type, *loader;
|
|
int result = 0;
|
|
/* Get current thread state and interpreter pointer */
|
|
tstate = PyThreadState_GET();
|
|
interp = tstate->interp;
|
|
loader_type = PyObject_GetAttrString(interp->importlib, loader_name);
|
|
if (loader_type == NULL) {
|
|
return -1;
|
|
}
|
|
loader = PyObject_CallFunction(loader_type, "ss", "__main__", filename);
|
|
Py_DECREF(loader_type);
|
|
if (loader == NULL) {
|
|
return -1;
|
|
}
|
|
if (PyDict_SetItemString(d, "__loader__", loader) < 0) {
|
|
result = -1;
|
|
}
|
|
Py_DECREF(loader);
|
|
return result;
|
|
}
|
|
|
|
int
|
|
PyRun_SimpleFileExFlags(FILE *fp, const char *filename, int closeit,
|
|
PyCompilerFlags *flags)
|
|
{
|
|
PyObject *m, *d, *v;
|
|
const char *ext;
|
|
int set_file_name = 0, ret;
|
|
size_t len;
|
|
|
|
m = PyImport_AddModule("__main__");
|
|
if (m == NULL)
|
|
return -1;
|
|
d = PyModule_GetDict(m);
|
|
if (PyDict_GetItemString(d, "__file__") == NULL) {
|
|
PyObject *f;
|
|
f = PyUnicode_DecodeFSDefault(filename);
|
|
if (f == NULL)
|
|
return -1;
|
|
if (PyDict_SetItemString(d, "__file__", f) < 0) {
|
|
Py_DECREF(f);
|
|
return -1;
|
|
}
|
|
if (PyDict_SetItemString(d, "__cached__", Py_None) < 0) {
|
|
Py_DECREF(f);
|
|
return -1;
|
|
}
|
|
set_file_name = 1;
|
|
Py_DECREF(f);
|
|
}
|
|
len = strlen(filename);
|
|
ext = filename + len - (len > 4 ? 4 : 0);
|
|
if (maybe_pyc_file(fp, filename, ext, closeit)) {
|
|
/* Try to run a pyc file. First, re-open in binary */
|
|
if (closeit)
|
|
fclose(fp);
|
|
if ((fp = fopen(filename, "rb")) == NULL) {
|
|
fprintf(stderr, "python: Can't reopen .pyc file\n");
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
/* Turn on optimization if a .pyo file is given */
|
|
if (strcmp(ext, ".pyo") == 0)
|
|
Py_OptimizeFlag = 1;
|
|
|
|
if (set_main_loader(d, filename, "SourcelessFileLoader") < 0) {
|
|
fprintf(stderr, "python: failed to set __main__.__loader__\n");
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
v = run_pyc_file(fp, filename, d, d, flags);
|
|
} else {
|
|
/* When running from stdin, leave __main__.__loader__ alone */
|
|
if (strcmp(filename, "<stdin>") != 0 &&
|
|
set_main_loader(d, filename, "SourceFileLoader") < 0) {
|
|
fprintf(stderr, "python: failed to set __main__.__loader__\n");
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
v = PyRun_FileExFlags(fp, filename, Py_file_input, d, d,
|
|
closeit, flags);
|
|
}
|
|
flush_io();
|
|
if (v == NULL) {
|
|
PyErr_Print();
|
|
ret = -1;
|
|
goto done;
|
|
}
|
|
Py_DECREF(v);
|
|
ret = 0;
|
|
done:
|
|
if (set_file_name && PyDict_DelItemString(d, "__file__"))
|
|
PyErr_Clear();
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
PyRun_SimpleStringFlags(const char *command, PyCompilerFlags *flags)
|
|
{
|
|
PyObject *m, *d, *v;
|
|
m = PyImport_AddModule("__main__");
|
|
if (m == NULL)
|
|
return -1;
|
|
d = PyModule_GetDict(m);
|
|
v = PyRun_StringFlags(command, Py_file_input, d, d, flags);
|
|
if (v == NULL) {
|
|
PyErr_Print();
|
|
return -1;
|
|
}
|
|
Py_DECREF(v);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
parse_syntax_error(PyObject *err, PyObject **message, const char **filename,
|
|
int *lineno, int *offset, const char **text)
|
|
{
|
|
long hold;
|
|
PyObject *v;
|
|
_Py_IDENTIFIER(msg);
|
|
_Py_IDENTIFIER(filename);
|
|
_Py_IDENTIFIER(lineno);
|
|
_Py_IDENTIFIER(offset);
|
|
_Py_IDENTIFIER(text);
|
|
|
|
*message = NULL;
|
|
|
|
/* new style errors. `err' is an instance */
|
|
*message = _PyObject_GetAttrId(err, &PyId_msg);
|
|
if (!*message)
|
|
goto finally;
|
|
|
|
v = _PyObject_GetAttrId(err, &PyId_filename);
|
|
if (!v)
|
|
goto finally;
|
|
if (v == Py_None) {
|
|
Py_DECREF(v);
|
|
*filename = NULL;
|
|
}
|
|
else {
|
|
*filename = _PyUnicode_AsString(v);
|
|
Py_DECREF(v);
|
|
if (!*filename)
|
|
goto finally;
|
|
}
|
|
|
|
v = _PyObject_GetAttrId(err, &PyId_lineno);
|
|
if (!v)
|
|
goto finally;
|
|
hold = PyLong_AsLong(v);
|
|
Py_DECREF(v);
|
|
if (hold < 0 && PyErr_Occurred())
|
|
goto finally;
|
|
*lineno = (int)hold;
|
|
|
|
v = _PyObject_GetAttrId(err, &PyId_offset);
|
|
if (!v)
|
|
goto finally;
|
|
if (v == Py_None) {
|
|
*offset = -1;
|
|
Py_DECREF(v);
|
|
} else {
|
|
hold = PyLong_AsLong(v);
|
|
Py_DECREF(v);
|
|
if (hold < 0 && PyErr_Occurred())
|
|
goto finally;
|
|
*offset = (int)hold;
|
|
}
|
|
|
|
v = _PyObject_GetAttrId(err, &PyId_text);
|
|
if (!v)
|
|
goto finally;
|
|
if (v == Py_None) {
|
|
Py_DECREF(v);
|
|
*text = NULL;
|
|
}
|
|
else {
|
|
*text = _PyUnicode_AsString(v);
|
|
Py_DECREF(v);
|
|
if (!*text)
|
|
goto finally;
|
|
}
|
|
return 1;
|
|
|
|
finally:
|
|
Py_XDECREF(*message);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
PyErr_Print(void)
|
|
{
|
|
PyErr_PrintEx(1);
|
|
}
|
|
|
|
static void
|
|
print_error_text(PyObject *f, int offset, const char *text)
|
|
{
|
|
char *nl;
|
|
if (offset >= 0) {
|
|
if (offset > 0 && offset == strlen(text) && text[offset - 1] == '\n')
|
|
offset--;
|
|
for (;;) {
|
|
nl = strchr(text, '\n');
|
|
if (nl == NULL || nl-text >= offset)
|
|
break;
|
|
offset -= (int)(nl+1-text);
|
|
text = nl+1;
|
|
}
|
|
while (*text == ' ' || *text == '\t') {
|
|
text++;
|
|
offset--;
|
|
}
|
|
}
|
|
PyFile_WriteString(" ", f);
|
|
PyFile_WriteString(text, f);
|
|
if (*text == '\0' || text[strlen(text)-1] != '\n')
|
|
PyFile_WriteString("\n", f);
|
|
if (offset == -1)
|
|
return;
|
|
PyFile_WriteString(" ", f);
|
|
while (--offset > 0)
|
|
PyFile_WriteString(" ", f);
|
|
PyFile_WriteString("^\n", f);
|
|
}
|
|
|
|
static void
|
|
handle_system_exit(void)
|
|
{
|
|
PyObject *exception, *value, *tb;
|
|
int exitcode = 0;
|
|
|
|
if (Py_InspectFlag)
|
|
/* Don't exit if -i flag was given. This flag is set to 0
|
|
* when entering interactive mode for inspecting. */
|
|
return;
|
|
|
|
PyErr_Fetch(&exception, &value, &tb);
|
|
fflush(stdout);
|
|
if (value == NULL || value == Py_None)
|
|
goto done;
|
|
if (PyExceptionInstance_Check(value)) {
|
|
/* The error code should be in the `code' attribute. */
|
|
_Py_IDENTIFIER(code);
|
|
PyObject *code = _PyObject_GetAttrId(value, &PyId_code);
|
|
if (code) {
|
|
Py_DECREF(value);
|
|
value = code;
|
|
if (value == Py_None)
|
|
goto done;
|
|
}
|
|
/* If we failed to dig out the 'code' attribute,
|
|
just let the else clause below print the error. */
|
|
}
|
|
if (PyLong_Check(value))
|
|
exitcode = (int)PyLong_AsLong(value);
|
|
else {
|
|
PyObject *sys_stderr = PySys_GetObject("stderr");
|
|
if (sys_stderr != NULL && sys_stderr != Py_None) {
|
|
PyFile_WriteObject(value, sys_stderr, Py_PRINT_RAW);
|
|
} else {
|
|
PyObject_Print(value, stderr, Py_PRINT_RAW);
|
|
fflush(stderr);
|
|
}
|
|
PySys_WriteStderr("\n");
|
|
exitcode = 1;
|
|
}
|
|
done:
|
|
/* Restore and clear the exception info, in order to properly decref
|
|
* the exception, value, and traceback. If we just exit instead,
|
|
* these leak, which confuses PYTHONDUMPREFS output, and may prevent
|
|
* some finalizers from running.
|
|
*/
|
|
PyErr_Restore(exception, value, tb);
|
|
PyErr_Clear();
|
|
Py_Exit(exitcode);
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
void
|
|
PyErr_PrintEx(int set_sys_last_vars)
|
|
{
|
|
PyObject *exception, *v, *tb, *hook;
|
|
|
|
if (PyErr_ExceptionMatches(PyExc_SystemExit)) {
|
|
handle_system_exit();
|
|
}
|
|
PyErr_Fetch(&exception, &v, &tb);
|
|
if (exception == NULL)
|
|
return;
|
|
PyErr_NormalizeException(&exception, &v, &tb);
|
|
if (tb == NULL) {
|
|
tb = Py_None;
|
|
Py_INCREF(tb);
|
|
}
|
|
PyException_SetTraceback(v, tb);
|
|
if (exception == NULL)
|
|
return;
|
|
/* Now we know v != NULL too */
|
|
if (set_sys_last_vars) {
|
|
PySys_SetObject("last_type", exception);
|
|
PySys_SetObject("last_value", v);
|
|
PySys_SetObject("last_traceback", tb);
|
|
}
|
|
hook = PySys_GetObject("excepthook");
|
|
if (hook) {
|
|
PyObject *args = PyTuple_Pack(3, exception, v, tb);
|
|
PyObject *result = PyEval_CallObject(hook, args);
|
|
if (result == NULL) {
|
|
PyObject *exception2, *v2, *tb2;
|
|
if (PyErr_ExceptionMatches(PyExc_SystemExit)) {
|
|
handle_system_exit();
|
|
}
|
|
PyErr_Fetch(&exception2, &v2, &tb2);
|
|
PyErr_NormalizeException(&exception2, &v2, &tb2);
|
|
/* It should not be possible for exception2 or v2
|
|
to be NULL. However PyErr_Display() can't
|
|
tolerate NULLs, so just be safe. */
|
|
if (exception2 == NULL) {
|
|
exception2 = Py_None;
|
|
Py_INCREF(exception2);
|
|
}
|
|
if (v2 == NULL) {
|
|
v2 = Py_None;
|
|
Py_INCREF(v2);
|
|
}
|
|
fflush(stdout);
|
|
PySys_WriteStderr("Error in sys.excepthook:\n");
|
|
PyErr_Display(exception2, v2, tb2);
|
|
PySys_WriteStderr("\nOriginal exception was:\n");
|
|
PyErr_Display(exception, v, tb);
|
|
Py_DECREF(exception2);
|
|
Py_DECREF(v2);
|
|
Py_XDECREF(tb2);
|
|
}
|
|
Py_XDECREF(result);
|
|
Py_XDECREF(args);
|
|
} else {
|
|
PySys_WriteStderr("sys.excepthook is missing\n");
|
|
PyErr_Display(exception, v, tb);
|
|
}
|
|
Py_XDECREF(exception);
|
|
Py_XDECREF(v);
|
|
Py_XDECREF(tb);
|
|
}
|
|
|
|
static void
|
|
print_exception(PyObject *f, PyObject *value)
|
|
{
|
|
int err = 0;
|
|
PyObject *type, *tb;
|
|
_Py_IDENTIFIER(print_file_and_line);
|
|
|
|
if (!PyExceptionInstance_Check(value)) {
|
|
PyFile_WriteString("TypeError: print_exception(): Exception expected for value, ", f);
|
|
PyFile_WriteString(Py_TYPE(value)->tp_name, f);
|
|
PyFile_WriteString(" found\n", f);
|
|
return;
|
|
}
|
|
|
|
Py_INCREF(value);
|
|
fflush(stdout);
|
|
type = (PyObject *) Py_TYPE(value);
|
|
tb = PyException_GetTraceback(value);
|
|
if (tb && tb != Py_None)
|
|
err = PyTraceBack_Print(tb, f);
|
|
if (err == 0 &&
|
|
_PyObject_HasAttrId(value, &PyId_print_file_and_line))
|
|
{
|
|
PyObject *message;
|
|
const char *filename, *text;
|
|
int lineno, offset;
|
|
if (!parse_syntax_error(value, &message, &filename,
|
|
&lineno, &offset, &text))
|
|
PyErr_Clear();
|
|
else {
|
|
char buf[10];
|
|
PyFile_WriteString(" File \"", f);
|
|
if (filename == NULL)
|
|
PyFile_WriteString("<string>", f);
|
|
else
|
|
PyFile_WriteString(filename, f);
|
|
PyFile_WriteString("\", line ", f);
|
|
PyOS_snprintf(buf, sizeof(buf), "%d", lineno);
|
|
PyFile_WriteString(buf, f);
|
|
PyFile_WriteString("\n", f);
|
|
if (text != NULL)
|
|
print_error_text(f, offset, text);
|
|
Py_DECREF(value);
|
|
value = message;
|
|
/* Can't be bothered to check all those
|
|
PyFile_WriteString() calls */
|
|
if (PyErr_Occurred())
|
|
err = -1;
|
|
}
|
|
}
|
|
if (err) {
|
|
/* Don't do anything else */
|
|
}
|
|
else {
|
|
PyObject* moduleName;
|
|
char* className;
|
|
_Py_IDENTIFIER(__module__);
|
|
assert(PyExceptionClass_Check(type));
|
|
className = PyExceptionClass_Name(type);
|
|
if (className != NULL) {
|
|
char *dot = strrchr(className, '.');
|
|
if (dot != NULL)
|
|
className = dot+1;
|
|
}
|
|
|
|
moduleName = _PyObject_GetAttrId(type, &PyId___module__);
|
|
if (moduleName == NULL || !PyUnicode_Check(moduleName))
|
|
{
|
|
Py_XDECREF(moduleName);
|
|
err = PyFile_WriteString("<unknown>", f);
|
|
}
|
|
else {
|
|
char* modstr = _PyUnicode_AsString(moduleName);
|
|
if (modstr && strcmp(modstr, "builtins"))
|
|
{
|
|
err = PyFile_WriteString(modstr, f);
|
|
err += PyFile_WriteString(".", f);
|
|
}
|
|
Py_DECREF(moduleName);
|
|
}
|
|
if (err == 0) {
|
|
if (className == NULL)
|
|
err = PyFile_WriteString("<unknown>", f);
|
|
else
|
|
err = PyFile_WriteString(className, f);
|
|
}
|
|
}
|
|
if (err == 0 && (value != Py_None)) {
|
|
PyObject *s = PyObject_Str(value);
|
|
/* only print colon if the str() of the
|
|
object is not the empty string
|
|
*/
|
|
if (s == NULL)
|
|
err = -1;
|
|
else if (!PyUnicode_Check(s) ||
|
|
PyUnicode_GetLength(s) != 0)
|
|
err = PyFile_WriteString(": ", f);
|
|
if (err == 0)
|
|
err = PyFile_WriteObject(s, f, Py_PRINT_RAW);
|
|
Py_XDECREF(s);
|
|
}
|
|
/* try to write a newline in any case */
|
|
err += PyFile_WriteString("\n", f);
|
|
Py_XDECREF(tb);
|
|
Py_DECREF(value);
|
|
/* If an error happened here, don't show it.
|
|
XXX This is wrong, but too many callers rely on this behavior. */
|
|
if (err != 0)
|
|
PyErr_Clear();
|
|
}
|
|
|
|
static const char *cause_message =
|
|
"\nThe above exception was the direct cause "
|
|
"of the following exception:\n\n";
|
|
|
|
static const char *context_message =
|
|
"\nDuring handling of the above exception, "
|
|
"another exception occurred:\n\n";
|
|
|
|
static void
|
|
print_exception_recursive(PyObject *f, PyObject *value, PyObject *seen)
|
|
{
|
|
int err = 0, res;
|
|
PyObject *cause, *context;
|
|
|
|
if (seen != NULL) {
|
|
/* Exception chaining */
|
|
if (PySet_Add(seen, value) == -1)
|
|
PyErr_Clear();
|
|
else if (PyExceptionInstance_Check(value)) {
|
|
cause = PyException_GetCause(value);
|
|
context = PyException_GetContext(value);
|
|
if (cause) {
|
|
res = PySet_Contains(seen, cause);
|
|
if (res == -1)
|
|
PyErr_Clear();
|
|
if (res == 0) {
|
|
print_exception_recursive(
|
|
f, cause, seen);
|
|
err |= PyFile_WriteString(
|
|
cause_message, f);
|
|
}
|
|
}
|
|
else if (context &&
|
|
!((PyBaseExceptionObject *)value)->suppress_context) {
|
|
res = PySet_Contains(seen, context);
|
|
if (res == -1)
|
|
PyErr_Clear();
|
|
if (res == 0) {
|
|
print_exception_recursive(
|
|
f, context, seen);
|
|
err |= PyFile_WriteString(
|
|
context_message, f);
|
|
}
|
|
}
|
|
Py_XDECREF(context);
|
|
Py_XDECREF(cause);
|
|
}
|
|
}
|
|
print_exception(f, value);
|
|
if (err != 0)
|
|
PyErr_Clear();
|
|
}
|
|
|
|
void
|
|
PyErr_Display(PyObject *exception, PyObject *value, PyObject *tb)
|
|
{
|
|
PyObject *seen;
|
|
PyObject *f = PySys_GetObject("stderr");
|
|
if (f == Py_None) {
|
|
/* pass */
|
|
}
|
|
else if (f == NULL) {
|
|
_PyObject_Dump(value);
|
|
fprintf(stderr, "lost sys.stderr\n");
|
|
}
|
|
else {
|
|
/* We choose to ignore seen being possibly NULL, and report
|
|
at least the main exception (it could be a MemoryError).
|
|
*/
|
|
seen = PySet_New(NULL);
|
|
if (seen == NULL)
|
|
PyErr_Clear();
|
|
print_exception_recursive(f, value, seen);
|
|
Py_XDECREF(seen);
|
|
}
|
|
}
|
|
|
|
PyObject *
|
|
PyRun_StringFlags(const char *str, int start, PyObject *globals,
|
|
PyObject *locals, PyCompilerFlags *flags)
|
|
{
|
|
PyObject *ret = NULL;
|
|
mod_ty mod;
|
|
PyArena *arena = PyArena_New();
|
|
if (arena == NULL)
|
|
return NULL;
|
|
|
|
mod = PyParser_ASTFromString(str, "<string>", start, flags, arena);
|
|
if (mod != NULL)
|
|
ret = run_mod(mod, "<string>", globals, locals, flags, arena);
|
|
PyArena_Free(arena);
|
|
return ret;
|
|
}
|
|
|
|
PyObject *
|
|
PyRun_FileExFlags(FILE *fp, const char *filename, int start, PyObject *globals,
|
|
PyObject *locals, int closeit, PyCompilerFlags *flags)
|
|
{
|
|
PyObject *ret;
|
|
mod_ty mod;
|
|
PyArena *arena = PyArena_New();
|
|
if (arena == NULL)
|
|
return NULL;
|
|
|
|
mod = PyParser_ASTFromFile(fp, filename, NULL, start, 0, 0,
|
|
flags, NULL, arena);
|
|
if (closeit)
|
|
fclose(fp);
|
|
if (mod == NULL) {
|
|
PyArena_Free(arena);
|
|
return NULL;
|
|
}
|
|
ret = run_mod(mod, filename, globals, locals, flags, arena);
|
|
PyArena_Free(arena);
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
flush_io(void)
|
|
{
|
|
PyObject *f, *r;
|
|
PyObject *type, *value, *traceback;
|
|
_Py_IDENTIFIER(flush);
|
|
|
|
/* Save the current exception */
|
|
PyErr_Fetch(&type, &value, &traceback);
|
|
|
|
f = PySys_GetObject("stderr");
|
|
if (f != NULL) {
|
|
r = _PyObject_CallMethodId(f, &PyId_flush, "");
|
|
if (r)
|
|
Py_DECREF(r);
|
|
else
|
|
PyErr_Clear();
|
|
}
|
|
f = PySys_GetObject("stdout");
|
|
if (f != NULL) {
|
|
r = _PyObject_CallMethodId(f, &PyId_flush, "");
|
|
if (r)
|
|
Py_DECREF(r);
|
|
else
|
|
PyErr_Clear();
|
|
}
|
|
|
|
PyErr_Restore(type, value, traceback);
|
|
}
|
|
|
|
static PyObject *
|
|
run_mod(mod_ty mod, const char *filename, PyObject *globals, PyObject *locals,
|
|
PyCompilerFlags *flags, PyArena *arena)
|
|
{
|
|
PyCodeObject *co;
|
|
PyObject *v;
|
|
co = PyAST_Compile(mod, filename, flags, arena);
|
|
if (co == NULL)
|
|
return NULL;
|
|
v = PyEval_EvalCode((PyObject*)co, globals, locals);
|
|
Py_DECREF(co);
|
|
return v;
|
|
}
|
|
|
|
static PyObject *
|
|
run_pyc_file(FILE *fp, const char *filename, PyObject *globals,
|
|
PyObject *locals, PyCompilerFlags *flags)
|
|
{
|
|
PyCodeObject *co;
|
|
PyObject *v;
|
|
long magic;
|
|
long PyImport_GetMagicNumber(void);
|
|
|
|
magic = PyMarshal_ReadLongFromFile(fp);
|
|
if (magic != PyImport_GetMagicNumber()) {
|
|
PyErr_SetString(PyExc_RuntimeError,
|
|
"Bad magic number in .pyc file");
|
|
return NULL;
|
|
}
|
|
/* Skip mtime and size */
|
|
(void) PyMarshal_ReadLongFromFile(fp);
|
|
(void) PyMarshal_ReadLongFromFile(fp);
|
|
v = PyMarshal_ReadLastObjectFromFile(fp);
|
|
fclose(fp);
|
|
if (v == NULL || !PyCode_Check(v)) {
|
|
Py_XDECREF(v);
|
|
PyErr_SetString(PyExc_RuntimeError,
|
|
"Bad code object in .pyc file");
|
|
return NULL;
|
|
}
|
|
co = (PyCodeObject *)v;
|
|
v = PyEval_EvalCode((PyObject*)co, globals, locals);
|
|
if (v && flags)
|
|
flags->cf_flags |= (co->co_flags & PyCF_MASK);
|
|
Py_DECREF(co);
|
|
return v;
|
|
}
|
|
|
|
PyObject *
|
|
Py_CompileStringExFlags(const char *str, const char *filename, int start,
|
|
PyCompilerFlags *flags, int optimize)
|
|
{
|
|
PyCodeObject *co;
|
|
mod_ty mod;
|
|
PyArena *arena = PyArena_New();
|
|
if (arena == NULL)
|
|
return NULL;
|
|
|
|
mod = PyParser_ASTFromString(str, filename, start, flags, arena);
|
|
if (mod == NULL) {
|
|
PyArena_Free(arena);
|
|
return NULL;
|
|
}
|
|
if (flags && (flags->cf_flags & PyCF_ONLY_AST)) {
|
|
PyObject *result = PyAST_mod2obj(mod);
|
|
PyArena_Free(arena);
|
|
return result;
|
|
}
|
|
co = PyAST_CompileEx(mod, filename, flags, optimize, arena);
|
|
PyArena_Free(arena);
|
|
return (PyObject *)co;
|
|
}
|
|
|
|
/* For use in Py_LIMITED_API */
|
|
#undef Py_CompileString
|
|
PyObject *
|
|
PyCompileString(const char *str, const char *filename, int start)
|
|
{
|
|
return Py_CompileStringFlags(str, filename, start, NULL);
|
|
}
|
|
|
|
struct symtable *
|
|
Py_SymtableString(const char *str, const char *filename, int start)
|
|
{
|
|
struct symtable *st;
|
|
mod_ty mod;
|
|
PyCompilerFlags flags;
|
|
PyArena *arena = PyArena_New();
|
|
if (arena == NULL)
|
|
return NULL;
|
|
|
|
flags.cf_flags = 0;
|
|
mod = PyParser_ASTFromString(str, filename, start, &flags, arena);
|
|
if (mod == NULL) {
|
|
PyArena_Free(arena);
|
|
return NULL;
|
|
}
|
|
st = PySymtable_Build(mod, filename, 0);
|
|
PyArena_Free(arena);
|
|
return st;
|
|
}
|
|
|
|
/* Preferred access to parser is through AST. */
|
|
mod_ty
|
|
PyParser_ASTFromString(const char *s, const char *filename, int start,
|
|
PyCompilerFlags *flags, PyArena *arena)
|
|
{
|
|
mod_ty mod;
|
|
PyCompilerFlags localflags;
|
|
perrdetail err;
|
|
int iflags = PARSER_FLAGS(flags);
|
|
|
|
node *n = PyParser_ParseStringFlagsFilenameEx(s, filename,
|
|
&_PyParser_Grammar, start, &err,
|
|
&iflags);
|
|
if (flags == NULL) {
|
|
localflags.cf_flags = 0;
|
|
flags = &localflags;
|
|
}
|
|
if (n) {
|
|
flags->cf_flags |= iflags & PyCF_MASK;
|
|
mod = PyAST_FromNode(n, flags, filename, arena);
|
|
PyNode_Free(n);
|
|
}
|
|
else {
|
|
err_input(&err);
|
|
mod = NULL;
|
|
}
|
|
err_free(&err);
|
|
return mod;
|
|
}
|
|
|
|
mod_ty
|
|
PyParser_ASTFromFile(FILE *fp, const char *filename, const char* enc,
|
|
int start, char *ps1,
|
|
char *ps2, PyCompilerFlags *flags, int *errcode,
|
|
PyArena *arena)
|
|
{
|
|
mod_ty mod;
|
|
PyCompilerFlags localflags;
|
|
perrdetail err;
|
|
int iflags = PARSER_FLAGS(flags);
|
|
|
|
node *n = PyParser_ParseFileFlagsEx(fp, filename, enc,
|
|
&_PyParser_Grammar,
|
|
start, ps1, ps2, &err, &iflags);
|
|
if (flags == NULL) {
|
|
localflags.cf_flags = 0;
|
|
flags = &localflags;
|
|
}
|
|
if (n) {
|
|
flags->cf_flags |= iflags & PyCF_MASK;
|
|
mod = PyAST_FromNode(n, flags, filename, arena);
|
|
PyNode_Free(n);
|
|
}
|
|
else {
|
|
err_input(&err);
|
|
if (errcode)
|
|
*errcode = err.error;
|
|
mod = NULL;
|
|
}
|
|
err_free(&err);
|
|
return mod;
|
|
}
|
|
|
|
/* Simplified interface to parsefile -- return node or set exception */
|
|
|
|
node *
|
|
PyParser_SimpleParseFileFlags(FILE *fp, const char *filename, int start, int flags)
|
|
{
|
|
perrdetail err;
|
|
node *n = PyParser_ParseFileFlags(fp, filename, NULL,
|
|
&_PyParser_Grammar,
|
|
start, NULL, NULL, &err, flags);
|
|
if (n == NULL)
|
|
err_input(&err);
|
|
err_free(&err);
|
|
|
|
return n;
|
|
}
|
|
|
|
/* Simplified interface to parsestring -- return node or set exception */
|
|
|
|
node *
|
|
PyParser_SimpleParseStringFlags(const char *str, int start, int flags)
|
|
{
|
|
perrdetail err;
|
|
node *n = PyParser_ParseStringFlags(str, &_PyParser_Grammar,
|
|
start, &err, flags);
|
|
if (n == NULL)
|
|
err_input(&err);
|
|
err_free(&err);
|
|
return n;
|
|
}
|
|
|
|
node *
|
|
PyParser_SimpleParseStringFlagsFilename(const char *str, const char *filename,
|
|
int start, int flags)
|
|
{
|
|
perrdetail err;
|
|
node *n = PyParser_ParseStringFlagsFilename(str, filename,
|
|
&_PyParser_Grammar, start, &err, flags);
|
|
if (n == NULL)
|
|
err_input(&err);
|
|
err_free(&err);
|
|
return n;
|
|
}
|
|
|
|
node *
|
|
PyParser_SimpleParseStringFilename(const char *str, const char *filename, int start)
|
|
{
|
|
return PyParser_SimpleParseStringFlagsFilename(str, filename, start, 0);
|
|
}
|
|
|
|
/* May want to move a more generalized form of this to parsetok.c or
|
|
even parser modules. */
|
|
|
|
void
|
|
PyParser_ClearError(perrdetail *err)
|
|
{
|
|
err_free(err);
|
|
}
|
|
|
|
void
|
|
PyParser_SetError(perrdetail *err)
|
|
{
|
|
err_input(err);
|
|
}
|
|
|
|
static void
|
|
err_free(perrdetail *err)
|
|
{
|
|
Py_CLEAR(err->filename);
|
|
}
|
|
|
|
/* Set the error appropriate to the given input error code (see errcode.h) */
|
|
|
|
static void
|
|
err_input(perrdetail *err)
|
|
{
|
|
PyObject *v, *w, *errtype, *errtext;
|
|
PyObject *msg_obj = NULL;
|
|
char *msg = NULL;
|
|
|
|
errtype = PyExc_SyntaxError;
|
|
switch (err->error) {
|
|
case E_ERROR:
|
|
return;
|
|
case E_SYNTAX:
|
|
errtype = PyExc_IndentationError;
|
|
if (err->expected == INDENT)
|
|
msg = "expected an indented block";
|
|
else if (err->token == INDENT)
|
|
msg = "unexpected indent";
|
|
else if (err->token == DEDENT)
|
|
msg = "unexpected unindent";
|
|
else {
|
|
errtype = PyExc_SyntaxError;
|
|
msg = "invalid syntax";
|
|
}
|
|
break;
|
|
case E_TOKEN:
|
|
msg = "invalid token";
|
|
break;
|
|
case E_EOFS:
|
|
msg = "EOF while scanning triple-quoted string literal";
|
|
break;
|
|
case E_EOLS:
|
|
msg = "EOL while scanning string literal";
|
|
break;
|
|
case E_INTR:
|
|
if (!PyErr_Occurred())
|
|
PyErr_SetNone(PyExc_KeyboardInterrupt);
|
|
goto cleanup;
|
|
case E_NOMEM:
|
|
PyErr_NoMemory();
|
|
goto cleanup;
|
|
case E_EOF:
|
|
msg = "unexpected EOF while parsing";
|
|
break;
|
|
case E_TABSPACE:
|
|
errtype = PyExc_TabError;
|
|
msg = "inconsistent use of tabs and spaces in indentation";
|
|
break;
|
|
case E_OVERFLOW:
|
|
msg = "expression too long";
|
|
break;
|
|
case E_DEDENT:
|
|
errtype = PyExc_IndentationError;
|
|
msg = "unindent does not match any outer indentation level";
|
|
break;
|
|
case E_TOODEEP:
|
|
errtype = PyExc_IndentationError;
|
|
msg = "too many levels of indentation";
|
|
break;
|
|
case E_DECODE: {
|
|
PyObject *type, *value, *tb;
|
|
PyErr_Fetch(&type, &value, &tb);
|
|
msg = "unknown decode error";
|
|
if (value != NULL)
|
|
msg_obj = PyObject_Str(value);
|
|
Py_XDECREF(type);
|
|
Py_XDECREF(value);
|
|
Py_XDECREF(tb);
|
|
break;
|
|
}
|
|
case E_LINECONT:
|
|
msg = "unexpected character after line continuation character";
|
|
break;
|
|
|
|
case E_IDENTIFIER:
|
|
msg = "invalid character in identifier";
|
|
break;
|
|
case E_BADSINGLE:
|
|
msg = "multiple statements found while compiling a single statement";
|
|
break;
|
|
default:
|
|
fprintf(stderr, "error=%d\n", err->error);
|
|
msg = "unknown parsing error";
|
|
break;
|
|
}
|
|
/* err->text may not be UTF-8 in case of decoding errors.
|
|
Explicitly convert to an object. */
|
|
if (!err->text) {
|
|
errtext = Py_None;
|
|
Py_INCREF(Py_None);
|
|
} else {
|
|
errtext = PyUnicode_DecodeUTF8(err->text, strlen(err->text),
|
|
"replace");
|
|
}
|
|
v = Py_BuildValue("(OiiN)", err->filename,
|
|
err->lineno, err->offset, errtext);
|
|
if (v != NULL) {
|
|
if (msg_obj)
|
|
w = Py_BuildValue("(OO)", msg_obj, v);
|
|
else
|
|
w = Py_BuildValue("(sO)", msg, v);
|
|
} else
|
|
w = NULL;
|
|
Py_XDECREF(v);
|
|
PyErr_SetObject(errtype, w);
|
|
Py_XDECREF(w);
|
|
cleanup:
|
|
Py_XDECREF(msg_obj);
|
|
if (err->text != NULL) {
|
|
PyObject_FREE(err->text);
|
|
err->text = NULL;
|
|
}
|
|
}
|
|
|
|
/* Print fatal error message and abort */
|
|
|
|
void
|
|
Py_FatalError(const char *msg)
|
|
{
|
|
const int fd = fileno(stderr);
|
|
PyThreadState *tstate;
|
|
|
|
fprintf(stderr, "Fatal Python error: %s\n", msg);
|
|
fflush(stderr); /* it helps in Windows debug build */
|
|
if (PyErr_Occurred()) {
|
|
PyErr_PrintEx(0);
|
|
}
|
|
else {
|
|
tstate = _Py_atomic_load_relaxed(&_PyThreadState_Current);
|
|
if (tstate != NULL) {
|
|
fputc('\n', stderr);
|
|
fflush(stderr);
|
|
_Py_DumpTracebackThreads(fd, tstate->interp, tstate);
|
|
}
|
|
_PyFaulthandler_Fini();
|
|
}
|
|
|
|
#ifdef MS_WINDOWS
|
|
{
|
|
size_t len = strlen(msg);
|
|
WCHAR* buffer;
|
|
size_t i;
|
|
|
|
/* Convert the message to wchar_t. This uses a simple one-to-one
|
|
conversion, assuming that the this error message actually uses ASCII
|
|
only. If this ceases to be true, we will have to convert. */
|
|
buffer = alloca( (len+1) * (sizeof *buffer));
|
|
for( i=0; i<=len; ++i)
|
|
buffer[i] = msg[i];
|
|
OutputDebugStringW(L"Fatal Python error: ");
|
|
OutputDebugStringW(buffer);
|
|
OutputDebugStringW(L"\n");
|
|
}
|
|
#ifdef _DEBUG
|
|
DebugBreak();
|
|
#endif
|
|
#endif /* MS_WINDOWS */
|
|
abort();
|
|
}
|
|
|
|
/* Clean up and exit */
|
|
|
|
#ifdef WITH_THREAD
|
|
#include "pythread.h"
|
|
#endif
|
|
|
|
static void (*pyexitfunc)(void) = NULL;
|
|
/* For the atexit module. */
|
|
void _Py_PyAtExit(void (*func)(void))
|
|
{
|
|
pyexitfunc = func;
|
|
}
|
|
|
|
static void
|
|
call_py_exitfuncs(void)
|
|
{
|
|
if (pyexitfunc == NULL)
|
|
return;
|
|
|
|
(*pyexitfunc)();
|
|
PyErr_Clear();
|
|
}
|
|
|
|
/* Wait until threading._shutdown completes, provided
|
|
the threading module was imported in the first place.
|
|
The shutdown routine will wait until all non-daemon
|
|
"threading" threads have completed. */
|
|
static void
|
|
wait_for_thread_shutdown(void)
|
|
{
|
|
#ifdef WITH_THREAD
|
|
_Py_IDENTIFIER(_shutdown);
|
|
PyObject *result;
|
|
PyThreadState *tstate = PyThreadState_GET();
|
|
PyObject *threading = PyMapping_GetItemString(tstate->interp->modules,
|
|
"threading");
|
|
if (threading == NULL) {
|
|
/* threading not imported */
|
|
PyErr_Clear();
|
|
return;
|
|
}
|
|
result = _PyObject_CallMethodId(threading, &PyId__shutdown, "");
|
|
if (result == NULL) {
|
|
PyErr_WriteUnraisable(threading);
|
|
}
|
|
else {
|
|
Py_DECREF(result);
|
|
}
|
|
Py_DECREF(threading);
|
|
#endif
|
|
}
|
|
|
|
#define NEXITFUNCS 32
|
|
static void (*exitfuncs[NEXITFUNCS])(void);
|
|
static int nexitfuncs = 0;
|
|
|
|
int Py_AtExit(void (*func)(void))
|
|
{
|
|
if (nexitfuncs >= NEXITFUNCS)
|
|
return -1;
|
|
exitfuncs[nexitfuncs++] = func;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
call_ll_exitfuncs(void)
|
|
{
|
|
while (nexitfuncs > 0)
|
|
(*exitfuncs[--nexitfuncs])();
|
|
|
|
fflush(stdout);
|
|
fflush(stderr);
|
|
}
|
|
|
|
void
|
|
Py_Exit(int sts)
|
|
{
|
|
Py_Finalize();
|
|
|
|
exit(sts);
|
|
}
|
|
|
|
static void
|
|
initsigs(void)
|
|
{
|
|
#ifdef SIGPIPE
|
|
PyOS_setsig(SIGPIPE, SIG_IGN);
|
|
#endif
|
|
#ifdef SIGXFZ
|
|
PyOS_setsig(SIGXFZ, SIG_IGN);
|
|
#endif
|
|
#ifdef SIGXFSZ
|
|
PyOS_setsig(SIGXFSZ, SIG_IGN);
|
|
#endif
|
|
PyOS_InitInterrupts(); /* May imply initsignal() */
|
|
}
|
|
|
|
|
|
/* Restore signals that the interpreter has called SIG_IGN on to SIG_DFL.
|
|
*
|
|
* All of the code in this function must only use async-signal-safe functions,
|
|
* listed at `man 7 signal` or
|
|
* http://www.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_04.html.
|
|
*/
|
|
void
|
|
_Py_RestoreSignals(void)
|
|
{
|
|
#ifdef SIGPIPE
|
|
PyOS_setsig(SIGPIPE, SIG_DFL);
|
|
#endif
|
|
#ifdef SIGXFZ
|
|
PyOS_setsig(SIGXFZ, SIG_DFL);
|
|
#endif
|
|
#ifdef SIGXFSZ
|
|
PyOS_setsig(SIGXFSZ, SIG_DFL);
|
|
#endif
|
|
}
|
|
|
|
|
|
/*
|
|
* The file descriptor fd is considered ``interactive'' if either
|
|
* a) isatty(fd) is TRUE, or
|
|
* b) the -i flag was given, and the filename associated with
|
|
* the descriptor is NULL or "<stdin>" or "???".
|
|
*/
|
|
int
|
|
Py_FdIsInteractive(FILE *fp, const char *filename)
|
|
{
|
|
if (isatty((int)fileno(fp)))
|
|
return 1;
|
|
if (!Py_InteractiveFlag)
|
|
return 0;
|
|
return (filename == NULL) ||
|
|
(strcmp(filename, "<stdin>") == 0) ||
|
|
(strcmp(filename, "???") == 0);
|
|
}
|
|
|
|
|
|
#if defined(USE_STACKCHECK)
|
|
#if defined(WIN32) && defined(_MSC_VER)
|
|
|
|
/* Stack checking for Microsoft C */
|
|
|
|
#include <malloc.h>
|
|
#include <excpt.h>
|
|
|
|
/*
|
|
* Return non-zero when we run out of memory on the stack; zero otherwise.
|
|
*/
|
|
int
|
|
PyOS_CheckStack(void)
|
|
{
|
|
__try {
|
|
/* alloca throws a stack overflow exception if there's
|
|
not enough space left on the stack */
|
|
alloca(PYOS_STACK_MARGIN * sizeof(void*));
|
|
return 0;
|
|
} __except (GetExceptionCode() == STATUS_STACK_OVERFLOW ?
|
|
EXCEPTION_EXECUTE_HANDLER :
|
|
EXCEPTION_CONTINUE_SEARCH) {
|
|
int errcode = _resetstkoflw();
|
|
if (errcode == 0)
|
|
{
|
|
Py_FatalError("Could not reset the stack!");
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
#endif /* WIN32 && _MSC_VER */
|
|
|
|
/* Alternate implementations can be added here... */
|
|
|
|
#endif /* USE_STACKCHECK */
|
|
|
|
|
|
/* Wrappers around sigaction() or signal(). */
|
|
|
|
PyOS_sighandler_t
|
|
PyOS_getsig(int sig)
|
|
{
|
|
#ifdef HAVE_SIGACTION
|
|
struct sigaction context;
|
|
if (sigaction(sig, NULL, &context) == -1)
|
|
return SIG_ERR;
|
|
return context.sa_handler;
|
|
#else
|
|
PyOS_sighandler_t handler;
|
|
/* Special signal handling for the secure CRT in Visual Studio 2005 */
|
|
#if defined(_MSC_VER) && _MSC_VER >= 1400
|
|
switch (sig) {
|
|
/* Only these signals are valid */
|
|
case SIGINT:
|
|
case SIGILL:
|
|
case SIGFPE:
|
|
case SIGSEGV:
|
|
case SIGTERM:
|
|
case SIGBREAK:
|
|
case SIGABRT:
|
|
break;
|
|
/* Don't call signal() with other values or it will assert */
|
|
default:
|
|
return SIG_ERR;
|
|
}
|
|
#endif /* _MSC_VER && _MSC_VER >= 1400 */
|
|
handler = signal(sig, SIG_IGN);
|
|
if (handler != SIG_ERR)
|
|
signal(sig, handler);
|
|
return handler;
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* All of the code in this function must only use async-signal-safe functions,
|
|
* listed at `man 7 signal` or
|
|
* http://www.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_04.html.
|
|
*/
|
|
PyOS_sighandler_t
|
|
PyOS_setsig(int sig, PyOS_sighandler_t handler)
|
|
{
|
|
#ifdef HAVE_SIGACTION
|
|
/* Some code in Modules/signalmodule.c depends on sigaction() being
|
|
* used here if HAVE_SIGACTION is defined. Fix that if this code
|
|
* changes to invalidate that assumption.
|
|
*/
|
|
struct sigaction context, ocontext;
|
|
context.sa_handler = handler;
|
|
sigemptyset(&context.sa_mask);
|
|
context.sa_flags = 0;
|
|
if (sigaction(sig, &context, &ocontext) == -1)
|
|
return SIG_ERR;
|
|
return ocontext.sa_handler;
|
|
#else
|
|
PyOS_sighandler_t oldhandler;
|
|
oldhandler = signal(sig, handler);
|
|
#ifdef HAVE_SIGINTERRUPT
|
|
siginterrupt(sig, 1);
|
|
#endif
|
|
return oldhandler;
|
|
#endif
|
|
}
|
|
|
|
/* Deprecated C API functions still provided for binary compatiblity */
|
|
|
|
#undef PyParser_SimpleParseFile
|
|
PyAPI_FUNC(node *)
|
|
PyParser_SimpleParseFile(FILE *fp, const char *filename, int start)
|
|
{
|
|
return PyParser_SimpleParseFileFlags(fp, filename, start, 0);
|
|
}
|
|
|
|
#undef PyParser_SimpleParseString
|
|
PyAPI_FUNC(node *)
|
|
PyParser_SimpleParseString(const char *str, int start)
|
|
{
|
|
return PyParser_SimpleParseStringFlags(str, start, 0);
|
|
}
|
|
|
|
#undef PyRun_AnyFile
|
|
PyAPI_FUNC(int)
|
|
PyRun_AnyFile(FILE *fp, const char *name)
|
|
{
|
|
return PyRun_AnyFileExFlags(fp, name, 0, NULL);
|
|
}
|
|
|
|
#undef PyRun_AnyFileEx
|
|
PyAPI_FUNC(int)
|
|
PyRun_AnyFileEx(FILE *fp, const char *name, int closeit)
|
|
{
|
|
return PyRun_AnyFileExFlags(fp, name, closeit, NULL);
|
|
}
|
|
|
|
#undef PyRun_AnyFileFlags
|
|
PyAPI_FUNC(int)
|
|
PyRun_AnyFileFlags(FILE *fp, const char *name, PyCompilerFlags *flags)
|
|
{
|
|
return PyRun_AnyFileExFlags(fp, name, 0, flags);
|
|
}
|
|
|
|
#undef PyRun_File
|
|
PyAPI_FUNC(PyObject *)
|
|
PyRun_File(FILE *fp, const char *p, int s, PyObject *g, PyObject *l)
|
|
{
|
|
return PyRun_FileExFlags(fp, p, s, g, l, 0, NULL);
|
|
}
|
|
|
|
#undef PyRun_FileEx
|
|
PyAPI_FUNC(PyObject *)
|
|
PyRun_FileEx(FILE *fp, const char *p, int s, PyObject *g, PyObject *l, int c)
|
|
{
|
|
return PyRun_FileExFlags(fp, p, s, g, l, c, NULL);
|
|
}
|
|
|
|
#undef PyRun_FileFlags
|
|
PyAPI_FUNC(PyObject *)
|
|
PyRun_FileFlags(FILE *fp, const char *p, int s, PyObject *g, PyObject *l,
|
|
PyCompilerFlags *flags)
|
|
{
|
|
return PyRun_FileExFlags(fp, p, s, g, l, 0, flags);
|
|
}
|
|
|
|
#undef PyRun_SimpleFile
|
|
PyAPI_FUNC(int)
|
|
PyRun_SimpleFile(FILE *f, const char *p)
|
|
{
|
|
return PyRun_SimpleFileExFlags(f, p, 0, NULL);
|
|
}
|
|
|
|
#undef PyRun_SimpleFileEx
|
|
PyAPI_FUNC(int)
|
|
PyRun_SimpleFileEx(FILE *f, const char *p, int c)
|
|
{
|
|
return PyRun_SimpleFileExFlags(f, p, c, NULL);
|
|
}
|
|
|
|
|
|
#undef PyRun_String
|
|
PyAPI_FUNC(PyObject *)
|
|
PyRun_String(const char *str, int s, PyObject *g, PyObject *l)
|
|
{
|
|
return PyRun_StringFlags(str, s, g, l, NULL);
|
|
}
|
|
|
|
#undef PyRun_SimpleString
|
|
PyAPI_FUNC(int)
|
|
PyRun_SimpleString(const char *s)
|
|
{
|
|
return PyRun_SimpleStringFlags(s, NULL);
|
|
}
|
|
|
|
#undef Py_CompileString
|
|
PyAPI_FUNC(PyObject *)
|
|
Py_CompileString(const char *str, const char *p, int s)
|
|
{
|
|
return Py_CompileStringExFlags(str, p, s, NULL, -1);
|
|
}
|
|
|
|
#undef Py_CompileStringFlags
|
|
PyAPI_FUNC(PyObject *)
|
|
Py_CompileStringFlags(const char *str, const char *p, int s,
|
|
PyCompilerFlags *flags)
|
|
{
|
|
return Py_CompileStringExFlags(str, p, s, flags, -1);
|
|
}
|
|
|
|
#undef PyRun_InteractiveOne
|
|
PyAPI_FUNC(int)
|
|
PyRun_InteractiveOne(FILE *f, const char *p)
|
|
{
|
|
return PyRun_InteractiveOneFlags(f, p, NULL);
|
|
}
|
|
|
|
#undef PyRun_InteractiveLoop
|
|
PyAPI_FUNC(int)
|
|
PyRun_InteractiveLoop(FILE *f, const char *p)
|
|
{
|
|
return PyRun_InteractiveLoopFlags(f, p, NULL);
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|