diff options
author | Ori Bernstein <ori@eigenstate.org> | 2021-06-14 00:00:37 +0000 |
---|---|---|
committer | Ori Bernstein <ori@eigenstate.org> | 2021-06-14 00:00:37 +0000 |
commit | a73a964e51247ed169d322c725a3a18859f109a3 (patch) | |
tree | 3f752d117274d444bda44e85609aeac1acf313f3 /sys/src/cmd/python/Python/sysmodule.c | |
parent | e64efe273fcb921a61bf27d33b230c4e64fcd425 (diff) |
python, hg: tow outside the environment.
they've served us well, and can ride off into the sunset.
Diffstat (limited to 'sys/src/cmd/python/Python/sysmodule.c')
-rw-r--r-- | sys/src/cmd/python/Python/sysmodule.c | 1468 |
1 files changed, 0 insertions, 1468 deletions
diff --git a/sys/src/cmd/python/Python/sysmodule.c b/sys/src/cmd/python/Python/sysmodule.c deleted file mode 100644 index f2c42b962..000000000 --- a/sys/src/cmd/python/Python/sysmodule.c +++ /dev/null @@ -1,1468 +0,0 @@ - -/* 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 "code.h" -#include "frameobject.h" -#include "eval.h" - -#include "osdefs.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 - -#ifdef __VMS -#include <unixlib.h> -#endif - -#ifdef MS_WINDOWS -#include <windows.h> -#endif - -#ifdef HAVE_LANGINFO_H -#include <locale.h> -#include <langinfo.h> -#endif - -PyObject * -PySys_GetObject(char *name) -{ - PyThreadState *tstate = PyThreadState_GET(); - PyObject *sd = tstate->interp->sysdict; - if (sd == NULL) - return NULL; - return PyDict_GetItemString(sd, name); -} - -FILE * -PySys_GetFile(char *name, FILE *def) -{ - FILE *fp = NULL; - PyObject *v = PySys_GetObject(name); - if (v != NULL && PyFile_Check(v)) - fp = PyFile_AsFile(v); - if (fp == NULL) - fp = def; - return fp; -} - -int -PySys_SetObject(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_displayhook(PyObject *self, PyObject *o) -{ - PyObject *outf; - PyInterpreterState *interp = PyThreadState_GET()->interp; - PyObject *modules = interp->modules; - PyObject *builtins = PyDict_GetItemString(modules, "__builtin__"); - - if (builtins == NULL) { - PyErr_SetString(PyExc_RuntimeError, "lost __builtin__"); - return NULL; - } - - /* Print value except if None */ - /* After printing, also assign to '_' */ - /* Before, set '_' to None to avoid recursion */ - if (o == Py_None) { - Py_INCREF(Py_None); - return Py_None; - } - if (PyObject_SetAttrString(builtins, "_", Py_None) != 0) - return NULL; - if (Py_FlushLine() != 0) - return NULL; - outf = PySys_GetObject("stdout"); - if (outf == NULL) { - PyErr_SetString(PyExc_RuntimeError, "lost sys.stdout"); - return NULL; - } - if (PyFile_WriteObject(o, outf, 0) != 0) - return NULL; - PyFile_SoftSpace(outf, 1); - if (Py_FlushLine() != 0) - return NULL; - if (PyObject_SetAttrString(builtins, "_", o) != 0) - return NULL; - Py_INCREF(Py_None); - return Py_None; -} - -PyDoc_STRVAR(displayhook_doc, -"displayhook(object) -> None\n" -"\n" -"Print an object to sys.stdout and also save it in __builtin__.\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_INCREF(Py_None); - return Py_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) -{ - PyThreadState *tstate; - tstate = PyThreadState_GET(); - return Py_BuildValue( - "(OOO)", - tstate->exc_type != NULL ? tstate->exc_type : Py_None, - tstate->exc_value != NULL ? tstate->exc_value : Py_None, - tstate->exc_traceback != NULL ? - tstate->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_exc_clear(PyObject *self, PyObject *noargs) -{ - PyThreadState *tstate = PyThreadState_GET(); - PyObject *tmp_type, *tmp_value, *tmp_tb; - tmp_type = tstate->exc_type; - tmp_value = tstate->exc_value; - tmp_tb = tstate->exc_traceback; - tstate->exc_type = NULL; - tstate->exc_value = NULL; - tstate->exc_traceback = NULL; - Py_XDECREF(tmp_type); - Py_XDECREF(tmp_value); - Py_XDECREF(tmp_tb); - /* For b/w compatibility */ - PySys_SetObject("exc_type", Py_None); - PySys_SetObject("exc_value", Py_None); - PySys_SetObject("exc_traceback", Py_None); - Py_INCREF(Py_None); - return Py_None; -} - -PyDoc_STRVAR(exc_clear_doc, -"exc_clear() -> None\n\ -\n\ -Clear global information on the current exception. Subsequent calls to\n\ -exc_info() will return (None,None,None) until another exception is raised\n\ -in the current thread or the execution stack returns to a frame where\n\ -another exception is being handled." -); - -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 numeric, 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)." -); - -#ifdef Py_USING_UNICODE - -static PyObject * -sys_getdefaultencoding(PyObject *self) -{ - return PyString_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_setdefaultencoding(PyObject *self, PyObject *args) -{ - char *encoding; - if (!PyArg_ParseTuple(args, "s:setdefaultencoding", &encoding)) - return NULL; - if (PyUnicode_SetDefaultEncoding(encoding)) - return NULL; - Py_INCREF(Py_None); - return Py_None; -} - -PyDoc_STRVAR(setdefaultencoding_doc, -"setdefaultencoding(encoding)\n\ -\n\ -Set the current default string encoding used by the Unicode implementation." -); - -static PyObject * -sys_getfilesystemencoding(PyObject *self) -{ - if (Py_FileSystemDefaultEncoding) - return PyString_FromString(Py_FileSystemDefaultEncoding); - Py_INCREF(Py_None); - return Py_None; -} - -PyDoc_STRVAR(getfilesystemencoding_doc, -"getfilesystemencoding() -> string\n\ -\n\ -Return the encoding used to convert Unicode filenames in\n\ -operating system filenames." -); - -#endif - -/* - * Cached interned string objects used for calling the profile and - * trace functions. Initialized by trace_init(). - */ -static PyObject *whatstrings[7] = {NULL, NULL, NULL, NULL, NULL, NULL, NULL}; - -static int -trace_init(void) -{ - static char *whatnames[7] = {"call", "exception", "line", "return", - "c_call", "c_exception", "c_return"}; - PyObject *name; - int i; - for (i = 0; i < 7; ++i) { - if (whatstrings[i] == NULL) { - name = PyString_InternFromString(whatnames[i]); - if (name == NULL) - return -1; - whatstrings[i] = name; - } - } - return 0; -} - - -static PyObject * -call_trampoline(PyThreadState *tstate, PyObject* callback, - PyFrameObject *frame, int what, PyObject *arg) -{ - PyObject *args = PyTuple_New(3); - PyObject *whatstr; - PyObject *result; - - if (args == NULL) - return NULL; - Py_INCREF(frame); - whatstr = whatstrings[what]; - Py_INCREF(whatstr); - if (arg == NULL) - arg = Py_None; - Py_INCREF(arg); - PyTuple_SET_ITEM(args, 0, (PyObject *)frame); - PyTuple_SET_ITEM(args, 1, whatstr); - PyTuple_SET_ITEM(args, 2, arg); - - /* call the Python-level function */ - PyFrame_FastToLocals(frame); - result = PyEval_CallObject(callback, args); - PyFrame_LocalsToFast(frame, 1); - if (result == NULL) - PyTraceBack_Here(frame); - - /* cleanup */ - Py_DECREF(args); - return result; -} - -static int -profile_trampoline(PyObject *self, PyFrameObject *frame, - int what, PyObject *arg) -{ - PyThreadState *tstate = frame->f_tstate; - PyObject *result; - - if (arg == NULL) - arg = Py_None; - result = call_trampoline(tstate, 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) -{ - PyThreadState *tstate = frame->f_tstate; - PyObject *callback; - PyObject *result; - - if (what == PyTrace_CALL) - callback = self; - else - callback = frame->f_trace; - if (callback == NULL) - return 0; - result = call_trampoline(tstate, callback, frame, what, arg); - if (result == NULL) { - PyEval_SetTrace(NULL, NULL); - Py_XDECREF(frame->f_trace); - frame->f_trace = NULL; - return -1; - } - if (result != Py_None) { - PyObject *temp = frame->f_trace; - frame->f_trace = NULL; - Py_XDECREF(temp); - 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_INCREF(Py_None); - return Py_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_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_INCREF(Py_None); - return Py_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_setcheckinterval(PyObject *self, PyObject *args) -{ - if (!PyArg_ParseTuple(args, "i:setcheckinterval", &_Py_CheckInterval)) - return NULL; - Py_INCREF(Py_None); - return Py_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) -{ - return PyInt_FromLong(_Py_CheckInterval); -} - -PyDoc_STRVAR(getcheckinterval_doc, -"getcheckinterval() -> current check interval; see setcheckinterval()." -); - -#ifdef WITH_TSC -static PyObject * -sys_settscdump(PyObject *self, PyObject *args) -{ - int bool; - PyThreadState *tstate = PyThreadState_Get(); - - if (!PyArg_ParseTuple(args, "i:settscdump", &bool)) - return NULL; - if (bool) - tstate->interp->tscdump = 1; - else - tstate->interp->tscdump = 0; - Py_INCREF(Py_None); - return Py_None; - -} - -PyDoc_STRVAR(settscdump_doc, -"settscdump(bool)\n\ -\n\ -If true, tell the Python interpreter to dump VM measurements to\n\ -stderr. If false, turn off dump. The measurements are based on the\n\ -processor's time-stamp counter." -); -#endif /* TSC */ - -static PyObject * -sys_setrecursionlimit(PyObject *self, PyObject *args) -{ - int new_limit; - if (!PyArg_ParseTuple(args, "i:setrecursionlimit", &new_limit)) - return NULL; - if (new_limit <= 0) { - PyErr_SetString(PyExc_ValueError, - "recursion limit must be positive"); - return NULL; - } - Py_SetRecursionLimit(new_limit); - Py_INCREF(Py_None); - return Py_None; -} - -PyDoc_STRVAR(setrecursionlimit_doc, -"setrecursionlimit(n)\n\ -\n\ -Set the maximum depth of the Python interpreter stack to n. This\n\ -limit prevents infinite recursion from causing an overflow of the C\n\ -stack and crashing Python. The highest possible limit is platform-\n\ -dependent." -); - -static PyObject * -sys_getrecursionlimit(PyObject *self) -{ - return PyInt_FromLong(Py_GetRecursionLimit()); -} - -PyDoc_STRVAR(getrecursionlimit_doc, -"getrecursionlimit()\n\ -\n\ -Return the current value of the recursion limit, the maximum depth\n\ -of the Python interpreter stack. This limit prevents infinite\n\ -recursion from causing an overflow of the C stack and crashing Python." -); - -#ifdef MS_WINDOWS -PyDoc_STRVAR(getwindowsversion_doc, -"getwindowsversion()\n\ -\n\ -Return information about the running version of Windows.\n\ -The result is a tuple of (major, minor, build, platform, text)\n\ -All elements are numbers, except text which is a string.\n\ -Platform may be 0 for win32s, 1 for Windows 9x/ME, 2 for Windows NT/2000/XP\n\ -" -); - -static PyObject * -sys_getwindowsversion(PyObject *self) -{ - OSVERSIONINFO ver; - ver.dwOSVersionInfoSize = sizeof(ver); - if (!GetVersionEx(&ver)) - return PyErr_SetFromWindowsErr(0); - return Py_BuildValue("HHHHs", - ver.dwMajorVersion, - ver.dwMinorVersion, - ver.dwBuildNumber, - ver.dwPlatformId, - ver.szCSDVersion); -} - -#endif /* MS_WINDOWS */ - -#ifdef HAVE_DLOPEN -static PyObject * -sys_setdlopenflags(PyObject *self, PyObject *args) -{ - int new_val; - PyThreadState *tstate = PyThreadState_GET(); - if (!PyArg_ParseTuple(args, "i:setdlopenflags", &new_val)) - return NULL; - if (!tstate) - return NULL; - tstate->interp->dlopenflags = new_val; - Py_INCREF(Py_None); - return Py_None; -} - -PyDoc_STRVAR(setdlopenflags_doc, -"setdlopenflags(n) -> None\n\ -\n\ -Set the flags that will be used for dlopen() calls. Among other\n\ -things, this will enable a lazy resolving of symbols when importing\n\ -a module, if called as sys.setdlopenflags(0)\n\ -To share symbols across extension modules, call as\n\ -sys.setdlopenflags(dl.RTLD_NOW|dl.RTLD_GLOBAL)" -); - -static PyObject * -sys_getdlopenflags(PyObject *self, PyObject *args) -{ - PyThreadState *tstate = PyThreadState_GET(); - if (!tstate) - return NULL; - return PyInt_FromLong(tstate->interp->dlopenflags); -} - -PyDoc_STRVAR(getdlopenflags_doc, -"getdlopenflags() -> int\n\ -\n\ -Return the current value of the flags that are used for dlopen()\n\ -calls. The flag constants are defined in the dl module." -); -#endif - -#ifdef USE_MALLOPT -/* Link with -lmalloc (or -lmpc) on an SGI */ -#include <malloc.h> - -static PyObject * -sys_mdebug(PyObject *self, PyObject *args) -{ - int flag; - if (!PyArg_ParseTuple(args, "i:mdebug", &flag)) - return NULL; - mallopt(M_DEBUG, flag); - Py_INCREF(Py_None); - return Py_None; -} -#endif /* USE_MALLOPT */ - -static PyObject * -sys_getrefcount(PyObject *self, PyObject *arg) -{ - return PyInt_FromSsize_t(arg->ob_refcnt); -} - -#ifdef Py_REF_DEBUG -static PyObject * -sys_gettotalrefcount(PyObject *self) -{ - return PyInt_FromSsize_t(_Py_GetRefTotal()); -} -#endif /* Py_REF_DEBUG */ - -PyDoc_STRVAR(getrefcount_doc, -"getrefcount(object) -> integer\n\ -\n\ -Return the reference count of object. The count returned is generally\n\ -one higher than you might expect, because it includes the (temporary)\n\ -reference as an argument to getrefcount()." -); - -#ifdef COUNT_ALLOCS -static PyObject * -sys_getcounts(PyObject *self) -{ - extern PyObject *get_counts(void); - - return get_counts(); -} -#endif - -PyDoc_STRVAR(getframe_doc, -"_getframe([depth]) -> frameobject\n\ -\n\ -Return a frame object from the call stack. If optional integer depth is\n\ -given, return the frame object that many calls below the top of the stack.\n\ -If that is deeper than the call stack, ValueError is raised. The default\n\ -for depth is zero, returning the frame at the top of the call stack.\n\ -\n\ -This function should be used for internal and specialized\n\ -purposes only." -); - -static PyObject * -sys_getframe(PyObject *self, PyObject *args) -{ - PyFrameObject *f = PyThreadState_GET()->frame; - int depth = -1; - - if (!PyArg_ParseTuple(args, "|i:_getframe", &depth)) - return NULL; - - while (depth > 0 && f != NULL) { - f = f->f_back; - --depth; - } - if (f == NULL) { - PyErr_SetString(PyExc_ValueError, - "call stack is not deep enough"); - return NULL; - } - Py_INCREF(f); - return (PyObject*)f; -} - -PyDoc_STRVAR(current_frames_doc, -"_current_frames() -> dictionary\n\ -\n\ -Return a dictionary mapping each current thread T's thread id to T's\n\ -current stack frame.\n\ -\n\ -This function should be used for specialized purposes only." -); - -static PyObject * -sys_current_frames(PyObject *self, PyObject *noargs) -{ - return _PyThread_CurrentFrames(); -} - -PyDoc_STRVAR(call_tracing_doc, -"call_tracing(func, args) -> object\n\ -\n\ -Call func(*args), while tracing is enabled. The tracing state is\n\ -saved, and restored afterwards. This is intended to be called from\n\ -a debugger from a checkpoint, to recursively debug some other code." -); - -static PyObject * -sys_call_tracing(PyObject *self, PyObject *args) -{ - PyObject *func, *funcargs; - if (!PyArg_UnpackTuple(args, "call_tracing", 2, 2, &func, &funcargs)) - return NULL; - return _PyEval_CallTracing(func, funcargs); -} - -PyDoc_STRVAR(callstats_doc, -"callstats() -> tuple of integers\n\ -\n\ -Return a tuple of function call statistics, if CALL_PROFILE was defined\n\ -when Python was built. Otherwise, return None.\n\ -\n\ -When enabled, this function returns detailed, implementation-specific\n\ -details about the number of function calls executed. The return value is\n\ -a 11-tuple where the entries in the tuple are counts of:\n\ -0. all function calls\n\ -1. calls to PyFunction_Type objects\n\ -2. PyFunction calls that do not create an argument tuple\n\ -3. PyFunction calls that do not create an argument tuple\n\ - and bypass PyEval_EvalCodeEx()\n\ -4. PyMethod calls\n\ -5. PyMethod calls on bound methods\n\ -6. PyType calls\n\ -7. PyCFunction calls\n\ -8. generator calls\n\ -9. All other calls\n\ -10. Number of stack pops performed by call_function()" -); - -#ifdef __cplusplus -extern "C" { -#endif - -#ifdef Py_TRACE_REFS -/* Defined in objects.c because it uses static globals if that file */ -extern PyObject *_Py_GetObjects(PyObject *, PyObject *); -#endif - -#ifdef DYNAMIC_EXECUTION_PROFILE -/* Defined in ceval.c because it uses static globals if that file */ -extern PyObject *_Py_GetDXProfile(PyObject *, PyObject *); -#endif - -#ifdef __cplusplus -} -#endif - -static PyMethodDef sys_methods[] = { - /* Might as well keep this in alphabetic order */ - {"callstats", (PyCFunction)PyEval_GetCallStats, METH_NOARGS, - callstats_doc}, - {"_current_frames", sys_current_frames, METH_NOARGS, - current_frames_doc}, - {"displayhook", sys_displayhook, METH_O, displayhook_doc}, - {"exc_info", sys_exc_info, METH_NOARGS, exc_info_doc}, - {"exc_clear", sys_exc_clear, METH_NOARGS, exc_clear_doc}, - {"excepthook", sys_excepthook, METH_VARARGS, excepthook_doc}, - {"exit", sys_exit, METH_VARARGS, exit_doc}, -#ifdef Py_USING_UNICODE - {"getdefaultencoding", (PyCFunction)sys_getdefaultencoding, - METH_NOARGS, getdefaultencoding_doc}, -#endif -#ifdef HAVE_DLOPEN - {"getdlopenflags", (PyCFunction)sys_getdlopenflags, METH_NOARGS, - getdlopenflags_doc}, -#endif -#ifdef COUNT_ALLOCS - {"getcounts", (PyCFunction)sys_getcounts, METH_NOARGS}, -#endif -#ifdef DYNAMIC_EXECUTION_PROFILE - {"getdxp", _Py_GetDXProfile, METH_VARARGS}, -#endif -#ifdef Py_USING_UNICODE - {"getfilesystemencoding", (PyCFunction)sys_getfilesystemencoding, - METH_NOARGS, getfilesystemencoding_doc}, -#endif -#ifdef Py_TRACE_REFS - {"getobjects", _Py_GetObjects, METH_VARARGS}, -#endif -#ifdef Py_REF_DEBUG - {"gettotalrefcount", (PyCFunction)sys_gettotalrefcount, METH_NOARGS}, -#endif - {"getrefcount", (PyCFunction)sys_getrefcount, METH_O, getrefcount_doc}, - {"getrecursionlimit", (PyCFunction)sys_getrecursionlimit, METH_NOARGS, - getrecursionlimit_doc}, - {"_getframe", sys_getframe, METH_VARARGS, getframe_doc}, -#ifdef MS_WINDOWS - {"getwindowsversion", (PyCFunction)sys_getwindowsversion, METH_NOARGS, - getwindowsversion_doc}, -#endif /* MS_WINDOWS */ -#ifdef USE_MALLOPT - {"mdebug", sys_mdebug, METH_VARARGS}, -#endif -#ifdef Py_USING_UNICODE - {"setdefaultencoding", sys_setdefaultencoding, METH_VARARGS, - setdefaultencoding_doc}, -#endif - {"setcheckinterval", sys_setcheckinterval, METH_VARARGS, - setcheckinterval_doc}, - {"getcheckinterval", sys_getcheckinterval, METH_NOARGS, - getcheckinterval_doc}, -#ifdef HAVE_DLOPEN - {"setdlopenflags", sys_setdlopenflags, METH_VARARGS, - setdlopenflags_doc}, -#endif - {"setprofile", sys_setprofile, METH_O, setprofile_doc}, - {"setrecursionlimit", sys_setrecursionlimit, METH_VARARGS, - setrecursionlimit_doc}, -#ifdef WITH_TSC - {"settscdump", sys_settscdump, METH_VARARGS, settscdump_doc}, -#endif - {"settrace", sys_settrace, METH_O, settrace_doc}, - {"call_tracing", sys_call_tracing, METH_VARARGS, call_tracing_doc}, - {NULL, NULL} /* sentinel */ -}; - -static PyObject * -list_builtin_module_names(void) -{ - PyObject *list = PyList_New(0); - int i; - if (list == NULL) - return NULL; - for (i = 0; PyImport_Inittab[i].name != NULL; i++) { - PyObject *name = PyString_FromString( - PyImport_Inittab[i].name); - if (name == NULL) - break; - PyList_Append(list, name); - Py_DECREF(name); - } - if (PyList_Sort(list) != 0) { - Py_DECREF(list); - list = NULL; - } - if (list) { - PyObject *v = PyList_AsTuple(list); - Py_DECREF(list); - list = v; - } - return list; -} - -static PyObject *warnoptions = NULL; - -void -PySys_ResetWarnOptions(void) -{ - if (warnoptions == NULL || !PyList_Check(warnoptions)) - return; - PyList_SetSlice(warnoptions, 0, PyList_GET_SIZE(warnoptions), NULL); -} - -void -PySys_AddWarnOption(char *s) -{ - PyObject *str; - - if (warnoptions == NULL || !PyList_Check(warnoptions)) { - Py_XDECREF(warnoptions); - warnoptions = PyList_New(0); - if (warnoptions == NULL) - return; - } - str = PyString_FromString(s); - if (str != NULL) { - PyList_Append(warnoptions, str); - Py_DECREF(str); - } -} - -/* XXX This doc string is too long to be a single string literal in VC++ 5.0. - Two literals concatenated works just fine. If you have a K&R compiler - or other abomination that however *does* understand longer strings, - get rid of the !!! comment in the middle and the quotes that surround it. */ -PyDoc_VAR(sys_doc) = -PyDoc_STR( -"This module provides access to some objects used or maintained by the\n\ -interpreter and to functions that interact strongly with the interpreter.\n\ -\n\ -Dynamic objects:\n\ -\n\ -argv -- command line arguments; argv[0] is the script pathname if known\n\ -path -- module search path; path[0] is the script directory, else ''\n\ -modules -- dictionary of loaded modules\n\ -\n\ -displayhook -- called to show results in an interactive session\n\ -excepthook -- called to handle any uncaught exception other than SystemExit\n\ - To customize printing in an interactive session or to install a custom\n\ - top-level exception handler, assign other functions to replace these.\n\ -\n\ -exitfunc -- if sys.exitfunc exists, this routine is called when Python exits\n\ - Assigning to sys.exitfunc is deprecated; use the atexit module instead.\n\ -\n\ -stdin -- standard input file object; used by raw_input() and input()\n\ -stdout -- standard output file object; used by the print statement\n\ -stderr -- standard error object; used for error messages\n\ - By assigning other file objects (or objects that behave like files)\n\ - to these, it is possible to redirect all of the interpreter's I/O.\n\ -\n\ -last_type -- type of last uncaught exception\n\ -last_value -- value of last uncaught exception\n\ -last_traceback -- traceback of last uncaught exception\n\ - These three are only available in an interactive session after a\n\ - traceback has been printed.\n\ -\n\ -exc_type -- type of exception currently being handled\n\ -exc_value -- value of exception currently being handled\n\ -exc_traceback -- traceback of exception currently being handled\n\ - The function exc_info() should be used instead of these three,\n\ - because it is thread-safe.\n\ -" -) -/* concatenating string here */ -PyDoc_STR( -"\n\ -Static objects:\n\ -\n\ -maxint -- the largest supported integer (the smallest is -maxint-1)\n\ -maxunicode -- the largest supported character\n\ -builtin_module_names -- tuple of module names built into this interpreter\n\ -version -- the version of this interpreter as a string\n\ -version_info -- version information as a tuple\n\ -hexversion -- version information encoded as a single integer\n\ -copyright -- copyright notice pertaining to this interpreter\n\ -platform -- platform identifier\n\ -executable -- pathname of this Python interpreter\n\ -prefix -- prefix used to find the Python library\n\ -exec_prefix -- prefix used to find the machine-specific Python library\n\ -" -) -#ifdef MS_WINDOWS -/* concatenating string here */ -PyDoc_STR( -"dllhandle -- [Windows only] integer handle of the Python DLL\n\ -winver -- [Windows only] version number of the Python DLL\n\ -" -) -#endif /* MS_WINDOWS */ -PyDoc_STR( -"__stdin__ -- the original stdin; don't touch!\n\ -__stdout__ -- the original stdout; don't touch!\n\ -__stderr__ -- the original stderr; don't touch!\n\ -__displayhook__ -- the original displayhook; don't touch!\n\ -__excepthook__ -- the original excepthook; don't touch!\n\ -\n\ -Functions:\n\ -\n\ -displayhook() -- print an object to the screen, and save it in __builtin__._\n\ -excepthook() -- print an exception and its traceback to sys.stderr\n\ -exc_info() -- return thread-safe information about the current exception\n\ -exc_clear() -- clear the exception state for the current thread\n\ -exit() -- exit the interpreter by raising SystemExit\n\ -getdlopenflags() -- returns flags to be used for dlopen() calls\n\ -getrefcount() -- return the reference count for an object (plus one :-)\n\ -getrecursionlimit() -- return the max recursion depth for the interpreter\n\ -setcheckinterval() -- control how often the interpreter checks for events\n\ -setdlopenflags() -- set the flags to be used for dlopen() calls\n\ -setprofile() -- set the global profiling function\n\ -setrecursionlimit() -- set the max recursion depth for the interpreter\n\ -settrace() -- set the global debug tracing function\n\ -" -) -/* end of sys_doc */ ; - -static int -_check_and_flush (FILE *stream) -{ - int prev_fail = ferror (stream); - return fflush (stream) || prev_fail ? EOF : 0; -} - -/* Subversion branch and revision management */ -static const char _patchlevel_revision[] = PY_PATCHLEVEL_REVISION; -static const char headurl[] = "$HeadURL: svn+ssh://pythondev@svn.python.org/python/tags/r251/Python/sysmodule.c $"; -static int svn_initialized; -static char patchlevel_revision[50]; /* Just the number */ -static char branch[50]; -static char shortbranch[50]; -static const char *svn_revision; - -static void -svnversion_init(void) -{ - const char *python, *br_start, *br_end, *br_end2, *svnversion; - Py_ssize_t len; - int istag; - - if (svn_initialized) - return; - - python = strstr(headurl, "/python/"); - if (!python) - Py_FatalError("subversion keywords missing"); - - br_start = python + 8; - br_end = strchr(br_start, '/'); - assert(br_end); - - /* Works even for trunk, - as we are in trunk/Python/sysmodule.c */ - br_end2 = strchr(br_end+1, '/'); - - istag = strncmp(br_start, "tags", 4) == 0; - if (strncmp(br_start, "trunk", 5) == 0) { - strcpy(branch, "trunk"); - strcpy(shortbranch, "trunk"); - - } - else if (istag || strncmp(br_start, "branches", 8) == 0) { - len = br_end2 - br_start; - strncpy(branch, br_start, len); - branch[len] = '\0'; - - len = br_end2 - (br_end + 1); - strncpy(shortbranch, br_end + 1, len); - shortbranch[len] = '\0'; - } - else { - Py_FatalError("bad HeadURL"); - return; - } - - - svnversion = _Py_svnversion(); - if (strcmp(svnversion, "exported") != 0) - svn_revision = svnversion; - else if (istag) { - len = strlen(_patchlevel_revision); - strncpy(patchlevel_revision, _patchlevel_revision + 11, - len - 13); - patchlevel_revision[len - 13] = '\0'; - svn_revision = patchlevel_revision; - } - else - svn_revision = ""; - - svn_initialized = 1; -} - -/* Return svnversion output if available. - Else return Revision of patchlevel.h if on branch. - Else return empty string */ -const char* -Py_SubversionRevision() -{ - svnversion_init(); - return svn_revision; -} - -const char* -Py_SubversionShortBranch() -{ - svnversion_init(); - return shortbranch; -} - -PyObject * -_PySys_Init(void) -{ - PyObject *m, *v, *sysdict; - PyObject *sysin, *sysout, *syserr; - char *s; -#ifdef MS_WINDOWS - char buf[128]; -#endif - - m = Py_InitModule3("sys", sys_methods, sys_doc); - if (m == NULL) - return NULL; - sysdict = PyModule_GetDict(m); - - { - /* XXX: does this work on Win/Win64? (see posix_fstat) */ - struct stat sb; - if (fstat(fileno(stdin), &sb) == 0 && - S_ISDIR(sb.st_mode)) { - /* There's nothing more we can do. */ - /* Py_FatalError() will core dump, so just exit. */ - PySys_WriteStderr("Python error: <stdin> is a directory, cannot continue\n"); - exit(EXIT_FAILURE); - } - } - - /* Closing the standard FILE* if sys.std* goes aways causes problems - * for embedded Python usages. Closing them when somebody explicitly - * invokes .close() might be possible, but the FAQ promises they get - * never closed. However, we still need to get write errors when - * writing fails (e.g. because stdout is redirected), so we flush the - * streams and check for errors before the file objects are deleted. - * On OS X, fflush()ing stdin causes an error, so we exempt stdin - * from that procedure. - */ - sysin = PyFile_FromFile(stdin, "<stdin>", "r", NULL); - sysout = PyFile_FromFile(stdout, "<stdout>", "w", _check_and_flush); - syserr = PyFile_FromFile(stderr, "<stderr>", "w", _check_and_flush); - if (PyErr_Occurred()) - return NULL; -#ifdef MS_WINDOWS - if(isatty(_fileno(stdin)) && PyFile_Check(sysin)) { - sprintf(buf, "cp%d", GetConsoleCP()); - if (!PyFile_SetEncoding(sysin, buf)) - return NULL; - } - if(isatty(_fileno(stdout)) && PyFile_Check(sysout)) { - sprintf(buf, "cp%d", GetConsoleOutputCP()); - if (!PyFile_SetEncoding(sysout, buf)) - return NULL; - } - if(isatty(_fileno(stderr)) && PyFile_Check(syserr)) { - sprintf(buf, "cp%d", GetConsoleOutputCP()); - if (!PyFile_SetEncoding(syserr, buf)) - return NULL; - } -#endif - - PyDict_SetItemString(sysdict, "stdin", sysin); - PyDict_SetItemString(sysdict, "stdout", sysout); - PyDict_SetItemString(sysdict, "stderr", syserr); - /* Make backup copies for cleanup */ - PyDict_SetItemString(sysdict, "__stdin__", sysin); - PyDict_SetItemString(sysdict, "__stdout__", sysout); - PyDict_SetItemString(sysdict, "__stderr__", syserr); - PyDict_SetItemString(sysdict, "__displayhook__", - PyDict_GetItemString(sysdict, "displayhook")); - PyDict_SetItemString(sysdict, "__excepthook__", - PyDict_GetItemString(sysdict, "excepthook")); - Py_XDECREF(sysin); - Py_XDECREF(sysout); - Py_XDECREF(syserr); - PyDict_SetItemString(sysdict, "version", - v = PyString_FromString(Py_GetVersion())); - Py_XDECREF(v); - PyDict_SetItemString(sysdict, "hexversion", - v = PyInt_FromLong(PY_VERSION_HEX)); - Py_XDECREF(v); - svnversion_init(); - v = Py_BuildValue("(ssz)", "CPython", branch, svn_revision); - PyDict_SetItemString(sysdict, "subversion", v); - Py_XDECREF(v); - /* - * These release level checks are mutually exclusive and cover - * the field, so don't get too fancy with the pre-processor! - */ -#if PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_ALPHA - s = "alpha"; -#elif PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_BETA - s = "beta"; -#elif PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_GAMMA - s = "candidate"; -#elif PY_RELEASE_LEVEL == PY_RELEASE_LEVEL_FINAL - s = "final"; -#endif - -#define SET_SYS_FROM_STRING(key, value) \ - v = value; \ - if (v != NULL) \ - PyDict_SetItemString(sysdict, key, v); \ - Py_XDECREF(v) - - SET_SYS_FROM_STRING("version_info", - Py_BuildValue("iiisi", PY_MAJOR_VERSION, - PY_MINOR_VERSION, - PY_MICRO_VERSION, s, - PY_RELEASE_SERIAL)); - SET_SYS_FROM_STRING("api_version", - PyInt_FromLong(PYTHON_API_VERSION)); - SET_SYS_FROM_STRING("copyright", - PyString_FromString(Py_GetCopyright())); - SET_SYS_FROM_STRING("platform", - PyString_FromString(Py_GetPlatform())); - SET_SYS_FROM_STRING("executable", - PyString_FromString(Py_GetProgramFullPath())); - SET_SYS_FROM_STRING("prefix", - PyString_FromString(Py_GetPrefix())); - SET_SYS_FROM_STRING("exec_prefix", - PyString_FromString(Py_GetExecPrefix())); - SET_SYS_FROM_STRING("maxint", - PyInt_FromLong(PyInt_GetMax())); -#ifdef Py_USING_UNICODE - SET_SYS_FROM_STRING("maxunicode", - PyInt_FromLong(PyUnicode_GetMax())); -#endif - SET_SYS_FROM_STRING("builtin_module_names", - list_builtin_module_names()); - { - /* Assumes that longs are at least 2 bytes long. - Should be safe! */ - unsigned long number = 1; - char *value; - - s = (char *) &number; - if (s[0] == 0) - value = "big"; - else - value = "little"; - SET_SYS_FROM_STRING("byteorder", - PyString_FromString(value)); - } -#ifdef MS_COREDLL - SET_SYS_FROM_STRING("dllhandle", - PyLong_FromVoidPtr(PyWin_DLLhModule)); - SET_SYS_FROM_STRING("winver", - PyString_FromString(PyWin_DLLVersionString)); -#endif -#undef SET_SYS_FROM_STRING - if (warnoptions == NULL) { - warnoptions = PyList_New(0); - } - else { - Py_INCREF(warnoptions); - } - if (warnoptions != NULL) { - PyDict_SetItemString(sysdict, "warnoptions", warnoptions); - } - - if (PyErr_Occurred()) - return NULL; - return m; -} - -static PyObject * -makepathobject(char *path, int delim) -{ - int i, n; - char *p; - PyObject *v, *w; - - n = 1; - p = path; - while ((p = strchr(p, delim)) != NULL) { - n++; - p++; - } - v = PyList_New(n); - if (v == NULL) - return NULL; - for (i = 0; ; i++) { - p = strchr(path, delim); - if (p == NULL) - p = strchr(path, '\0'); /* End of string */ - w = PyString_FromStringAndSize(path, (Py_ssize_t) (p - path)); - if (w == NULL) { - Py_DECREF(v); - return NULL; - } - PyList_SetItem(v, i, w); - if (*p == '\0') - break; - path = p+1; - } - return v; -} - -void -PySys_SetPath(char *path) -{ - PyObject *v; - if ((v = makepathobject(path, DELIM)) == NULL) - Py_FatalError("can't create sys.path"); - if (PySys_SetObject("path", v) != 0) - Py_FatalError("can't assign sys.path"); - Py_DECREF(v); -} - -static PyObject * -makeargvobject(int argc, char **argv) -{ - PyObject *av; - if (argc <= 0 || argv == NULL) { - /* Ensure at least one (empty) argument is seen */ - static char *empty_argv[1] = {""}; - argv = empty_argv; - argc = 1; - } - av = PyList_New(argc); - if (av != NULL) { - int i; - for (i = 0; i < argc; i++) { -#ifdef __VMS - PyObject *v; - - /* argv[0] is the script pathname if known */ - if (i == 0) { - char* fn = decc$translate_vms(argv[0]); - if ((fn == (char *)0) || fn == (char *)-1) - v = PyString_FromString(argv[0]); - else - v = PyString_FromString( - decc$translate_vms(argv[0])); - } else - v = PyString_FromString(argv[i]); -#else - PyObject *v = PyString_FromString(argv[i]); -#endif - if (v == NULL) { - Py_DECREF(av); - av = NULL; - break; - } - PyList_SetItem(av, i, v); - } - } - return av; -} - -void -PySys_SetArgv(int argc, char **argv) -{ -#if defined(HAVE_REALPATH) - char fullpath[MAXPATHLEN]; -#elif defined(MS_WINDOWS) - char fullpath[MAX_PATH]; -#endif - PyObject *av = makeargvobject(argc, argv); - PyObject *path = PySys_GetObject("path"); - if (av == NULL) - Py_FatalError("no mem for sys.argv"); - if (PySys_SetObject("argv", av) != 0) - Py_FatalError("can't assign sys.argv"); - if (path != NULL) { - char *argv0 = argv[0]; - char *p = NULL; - Py_ssize_t n = 0; - PyObject *a; -#ifdef HAVE_READLINK - char link[MAXPATHLEN+1]; - char argv0copy[2*MAXPATHLEN+1]; - int nr = 0; - if (argc > 0 && argv0 != NULL && strcmp(argv0, "-c") != 0) - nr = readlink(argv0, link, MAXPATHLEN); - if (nr > 0) { - /* It's a symlink */ - link[nr] = '\0'; - if (link[0] == SEP) - argv0 = link; /* Link to absolute path */ - else if (strchr(link, SEP) == NULL) - ; /* Link without path */ - else { - /* Must join(dirname(argv0), link) */ - char *q = strrchr(argv0, SEP); - if (q == NULL) - argv0 = link; /* argv0 without path */ - else { - /* Must make a copy */ - strcpy(argv0copy, argv0); - q = strrchr(argv0copy, SEP); - strcpy(q+1, link); - argv0 = argv0copy; - } - } - } -#endif /* HAVE_READLINK */ -#if SEP == '\\' /* Special case for MS filename syntax */ - if (argc > 0 && argv0 != NULL && strcmp(argv0, "-c") != 0) { - char *q; -#ifdef MS_WINDOWS - char *ptemp; - if (GetFullPathName(argv0, - sizeof(fullpath), - fullpath, - &ptemp)) { - argv0 = fullpath; - } -#endif - p = strrchr(argv0, SEP); - /* Test for alternate separator */ - q = strrchr(p ? p : argv0, '/'); - if (q != NULL) - p = q; - if (p != NULL) { - n = p + 1 - argv0; - if (n > 1 && p[-1] != ':') - n--; /* Drop trailing separator */ - } - } -#else /* All other filename syntaxes */ - if (argc > 0 && argv0 != NULL && strcmp(argv0, "-c") != 0) { -#if defined(HAVE_REALPATH) - if (realpath(argv0, fullpath)) { - argv0 = fullpath; - } -#endif - p = strrchr(argv0, SEP); - } - if (p != NULL) { -#ifndef RISCOS - n = p + 1 - argv0; -#else /* don't include trailing separator */ - n = p - argv0; -#endif /* RISCOS */ -#if SEP == '/' /* Special case for Unix filename syntax */ - if (n > 1) - n--; /* Drop trailing separator */ -#endif /* Unix */ - } -#endif /* All others */ - a = PyString_FromStringAndSize(argv0, n); - if (a == NULL) - Py_FatalError("no mem for sys.path insertion"); - if (PyList_Insert(path, 0, a) < 0) - Py_FatalError("sys.path.insert(0) failed"); - Py_DECREF(a); - } - Py_DECREF(av); -} - - -/* APIs to write to sys.stdout or sys.stderr using a printf-like interface. - Adapted from code submitted by Just van Rossum. - - PySys_WriteStdout(format, ...) - PySys_WriteStderr(format, ...) - - The first function writes to sys.stdout; the second to sys.stderr. When - there is a problem, they write to the real (C level) stdout or stderr; - no exceptions are raised. - - Both take a printf-style format string as their first argument followed - by a variable length argument list determined by the format string. - - *** WARNING *** - - The format should limit the total size of the formatted output string to - 1000 bytes. In particular, this means that no unrestricted "%s" formats - should occur; these should be limited using "%.<N>s where <N> is a - decimal number calculated so that <N> plus the maximum size of other - formatted text does not exceed 1000 bytes. Also watch out for "%f", - which can print hundreds of digits for very large numbers. - - */ - -static void -mywrite(char *name, FILE *fp, const char *format, va_list va) -{ - PyObject *file; - PyObject *error_type, *error_value, *error_traceback; - - PyErr_Fetch(&error_type, &error_value, &error_traceback); - file = PySys_GetObject(name); - if (file == NULL || PyFile_AsFile(file) == fp) - vfprintf(fp, format, va); - else { - char buffer[1001]; - const int written = PyOS_vsnprintf(buffer, sizeof(buffer), - format, va); - if (PyFile_WriteString(buffer, file) != 0) { - PyErr_Clear(); - fputs(buffer, fp); - } - if (written < 0 || (size_t)written >= sizeof(buffer)) { - const char *truncated = "... truncated"; - if (PyFile_WriteString(truncated, file) != 0) { - PyErr_Clear(); - fputs(truncated, fp); - } - } - } - PyErr_Restore(error_type, error_value, error_traceback); -} - -void -PySys_WriteStdout(const char *format, ...) -{ - va_list va; - - va_start(va, format); - mywrite("stdout", stdout, format, va); - va_end(va); -} - -void -PySys_WriteStderr(const char *format, ...) -{ - va_list va; - - va_start(va, format); - mywrite("stderr", stderr, format, va); - va_end(va); -} |