mirror of
https://github.com/python/cpython.git
synced 2024-12-25 01:34:48 +08:00
731e189014
See PEP 539 for details. Highlights of changes: - Add Thread Specific Storage (TSS) API - Document the Thread Local Storage (TLS) API as deprecated - Update code that used TLS API to use TSS API
809 lines
22 KiB
C
809 lines
22 KiB
C
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/* Traceback implementation */
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#include "Python.h"
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#include "internal/pystate.h"
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#include "code.h"
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#include "frameobject.h"
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#include "structmember.h"
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#include "osdefs.h"
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#define OFF(x) offsetof(PyTracebackObject, x)
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#define PUTS(fd, str) _Py_write_noraise(fd, str, (int)strlen(str))
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#define MAX_STRING_LENGTH 500
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#define MAX_FRAME_DEPTH 100
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#define MAX_NTHREADS 100
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/* Function from Parser/tokenizer.c */
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extern char * PyTokenizer_FindEncodingFilename(int, PyObject *);
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_Py_IDENTIFIER(TextIOWrapper);
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_Py_IDENTIFIER(close);
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_Py_IDENTIFIER(open);
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_Py_IDENTIFIER(path);
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static PyObject *
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tb_dir(PyTracebackObject *self)
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{
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return Py_BuildValue("[ssss]", "tb_frame", "tb_next",
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"tb_lasti", "tb_lineno");
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}
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static PyMethodDef tb_methods[] = {
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{"__dir__", (PyCFunction)tb_dir, METH_NOARGS},
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{NULL, NULL, 0, NULL},
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};
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static PyMemberDef tb_memberlist[] = {
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{"tb_next", T_OBJECT, OFF(tb_next), READONLY},
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{"tb_frame", T_OBJECT, OFF(tb_frame), READONLY},
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{"tb_lasti", T_INT, OFF(tb_lasti), READONLY},
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{"tb_lineno", T_INT, OFF(tb_lineno), READONLY},
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{NULL} /* Sentinel */
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};
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static void
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tb_dealloc(PyTracebackObject *tb)
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{
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PyObject_GC_UnTrack(tb);
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Py_TRASHCAN_SAFE_BEGIN(tb)
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Py_XDECREF(tb->tb_next);
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Py_XDECREF(tb->tb_frame);
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PyObject_GC_Del(tb);
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Py_TRASHCAN_SAFE_END(tb)
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}
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static int
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tb_traverse(PyTracebackObject *tb, visitproc visit, void *arg)
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{
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Py_VISIT(tb->tb_next);
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Py_VISIT(tb->tb_frame);
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return 0;
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}
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static void
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tb_clear(PyTracebackObject *tb)
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{
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Py_CLEAR(tb->tb_next);
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Py_CLEAR(tb->tb_frame);
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}
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PyTypeObject PyTraceBack_Type = {
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PyVarObject_HEAD_INIT(&PyType_Type, 0)
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"traceback",
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sizeof(PyTracebackObject),
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0,
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(destructor)tb_dealloc, /*tp_dealloc*/
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0, /*tp_print*/
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0, /*tp_getattr*/
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0, /*tp_setattr*/
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0, /*tp_reserved*/
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0, /*tp_repr*/
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0, /*tp_as_number*/
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0, /*tp_as_sequence*/
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0, /*tp_as_mapping*/
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0, /* tp_hash */
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0, /* tp_call */
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0, /* tp_str */
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PyObject_GenericGetAttr, /* tp_getattro */
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0, /* tp_setattro */
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0, /* tp_as_buffer */
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Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */
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0, /* tp_doc */
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(traverseproc)tb_traverse, /* tp_traverse */
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(inquiry)tb_clear, /* tp_clear */
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0, /* tp_richcompare */
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0, /* tp_weaklistoffset */
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0, /* tp_iter */
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0, /* tp_iternext */
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tb_methods, /* tp_methods */
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tb_memberlist, /* tp_members */
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0, /* tp_getset */
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0, /* tp_base */
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0, /* tp_dict */
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};
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static PyTracebackObject *
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newtracebackobject(PyTracebackObject *next, PyFrameObject *frame)
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{
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PyTracebackObject *tb;
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if ((next != NULL && !PyTraceBack_Check(next)) ||
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frame == NULL || !PyFrame_Check(frame)) {
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PyErr_BadInternalCall();
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return NULL;
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}
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tb = PyObject_GC_New(PyTracebackObject, &PyTraceBack_Type);
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if (tb != NULL) {
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Py_XINCREF(next);
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tb->tb_next = next;
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Py_XINCREF(frame);
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tb->tb_frame = frame;
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tb->tb_lasti = frame->f_lasti;
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tb->tb_lineno = PyFrame_GetLineNumber(frame);
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PyObject_GC_Track(tb);
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}
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return tb;
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}
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int
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PyTraceBack_Here(PyFrameObject *frame)
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{
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PyObject *exc, *val, *tb, *newtb;
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PyErr_Fetch(&exc, &val, &tb);
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newtb = (PyObject *)newtracebackobject((PyTracebackObject *)tb, frame);
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if (newtb == NULL) {
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_PyErr_ChainExceptions(exc, val, tb);
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return -1;
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}
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PyErr_Restore(exc, val, newtb);
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Py_XDECREF(tb);
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return 0;
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}
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/* Insert a frame into the traceback for (funcname, filename, lineno). */
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void _PyTraceback_Add(const char *funcname, const char *filename, int lineno)
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{
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PyObject *globals;
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PyCodeObject *code;
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PyFrameObject *frame;
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PyObject *exc, *val, *tb;
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/* Save and clear the current exception. Python functions must not be
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called with an exception set. Calling Python functions happens when
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the codec of the filesystem encoding is implemented in pure Python. */
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PyErr_Fetch(&exc, &val, &tb);
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globals = PyDict_New();
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if (!globals)
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goto error;
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code = PyCode_NewEmpty(filename, funcname, lineno);
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if (!code) {
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Py_DECREF(globals);
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goto error;
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}
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frame = PyFrame_New(PyThreadState_Get(), code, globals, NULL);
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Py_DECREF(globals);
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Py_DECREF(code);
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if (!frame)
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goto error;
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frame->f_lineno = lineno;
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PyErr_Restore(exc, val, tb);
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PyTraceBack_Here(frame);
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Py_DECREF(frame);
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return;
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error:
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_PyErr_ChainExceptions(exc, val, tb);
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}
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static PyObject *
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_Py_FindSourceFile(PyObject *filename, char* namebuf, size_t namelen, PyObject *io)
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{
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Py_ssize_t i;
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PyObject *binary;
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PyObject *v;
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Py_ssize_t npath;
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size_t taillen;
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PyObject *syspath;
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PyObject *path;
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const char* tail;
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PyObject *filebytes;
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const char* filepath;
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Py_ssize_t len;
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PyObject* result;
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filebytes = PyUnicode_EncodeFSDefault(filename);
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if (filebytes == NULL) {
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PyErr_Clear();
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return NULL;
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}
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filepath = PyBytes_AS_STRING(filebytes);
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/* Search tail of filename in sys.path before giving up */
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tail = strrchr(filepath, SEP);
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if (tail == NULL)
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tail = filepath;
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else
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tail++;
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taillen = strlen(tail);
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syspath = _PySys_GetObjectId(&PyId_path);
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if (syspath == NULL || !PyList_Check(syspath))
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goto error;
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npath = PyList_Size(syspath);
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for (i = 0; i < npath; i++) {
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v = PyList_GetItem(syspath, i);
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if (v == NULL) {
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PyErr_Clear();
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break;
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}
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if (!PyUnicode_Check(v))
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continue;
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path = PyUnicode_EncodeFSDefault(v);
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if (path == NULL) {
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PyErr_Clear();
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continue;
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}
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len = PyBytes_GET_SIZE(path);
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if (len + 1 + (Py_ssize_t)taillen >= (Py_ssize_t)namelen - 1) {
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Py_DECREF(path);
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continue; /* Too long */
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}
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strcpy(namebuf, PyBytes_AS_STRING(path));
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Py_DECREF(path);
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if (strlen(namebuf) != (size_t)len)
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continue; /* v contains '\0' */
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if (len > 0 && namebuf[len-1] != SEP)
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namebuf[len++] = SEP;
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strcpy(namebuf+len, tail);
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binary = _PyObject_CallMethodId(io, &PyId_open, "ss", namebuf, "rb");
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if (binary != NULL) {
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result = binary;
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goto finally;
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}
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PyErr_Clear();
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}
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goto error;
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error:
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result = NULL;
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finally:
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Py_DECREF(filebytes);
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return result;
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}
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int
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_Py_DisplaySourceLine(PyObject *f, PyObject *filename, int lineno, int indent)
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{
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int err = 0;
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int fd;
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int i;
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char *found_encoding;
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char *encoding;
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PyObject *io;
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PyObject *binary;
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PyObject *fob = NULL;
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PyObject *lineobj = NULL;
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PyObject *res;
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char buf[MAXPATHLEN+1];
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int kind;
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void *data;
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/* open the file */
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if (filename == NULL)
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return 0;
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io = PyImport_ImportModuleNoBlock("io");
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if (io == NULL)
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return -1;
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binary = _PyObject_CallMethodId(io, &PyId_open, "Os", filename, "rb");
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if (binary == NULL) {
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PyErr_Clear();
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binary = _Py_FindSourceFile(filename, buf, sizeof(buf), io);
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if (binary == NULL) {
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Py_DECREF(io);
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return -1;
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}
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}
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/* use the right encoding to decode the file as unicode */
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fd = PyObject_AsFileDescriptor(binary);
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if (fd < 0) {
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Py_DECREF(io);
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Py_DECREF(binary);
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return 0;
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}
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found_encoding = PyTokenizer_FindEncodingFilename(fd, filename);
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if (found_encoding == NULL)
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PyErr_Clear();
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encoding = (found_encoding != NULL) ? found_encoding : "utf-8";
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/* Reset position */
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if (lseek(fd, 0, SEEK_SET) == (off_t)-1) {
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Py_DECREF(io);
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Py_DECREF(binary);
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PyMem_FREE(found_encoding);
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return 0;
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}
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fob = _PyObject_CallMethodId(io, &PyId_TextIOWrapper, "Os", binary, encoding);
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Py_DECREF(io);
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PyMem_FREE(found_encoding);
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if (fob == NULL) {
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PyErr_Clear();
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res = _PyObject_CallMethodId(binary, &PyId_close, NULL);
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Py_DECREF(binary);
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if (res)
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Py_DECREF(res);
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else
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PyErr_Clear();
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return 0;
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}
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Py_DECREF(binary);
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/* get the line number lineno */
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for (i = 0; i < lineno; i++) {
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Py_XDECREF(lineobj);
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lineobj = PyFile_GetLine(fob, -1);
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if (!lineobj) {
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PyErr_Clear();
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err = -1;
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break;
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}
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}
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res = _PyObject_CallMethodId(fob, &PyId_close, NULL);
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if (res)
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Py_DECREF(res);
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else
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PyErr_Clear();
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Py_DECREF(fob);
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if (!lineobj || !PyUnicode_Check(lineobj)) {
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Py_XDECREF(lineobj);
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return err;
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}
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/* remove the indentation of the line */
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kind = PyUnicode_KIND(lineobj);
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data = PyUnicode_DATA(lineobj);
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for (i=0; i < PyUnicode_GET_LENGTH(lineobj); i++) {
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Py_UCS4 ch = PyUnicode_READ(kind, data, i);
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if (ch != ' ' && ch != '\t' && ch != '\014')
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break;
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}
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if (i) {
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PyObject *truncated;
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truncated = PyUnicode_Substring(lineobj, i, PyUnicode_GET_LENGTH(lineobj));
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if (truncated) {
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Py_DECREF(lineobj);
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lineobj = truncated;
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} else {
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PyErr_Clear();
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}
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}
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/* Write some spaces before the line */
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strcpy(buf, " ");
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assert (strlen(buf) == 10);
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while (indent > 0) {
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if (indent < 10)
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buf[indent] = '\0';
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err = PyFile_WriteString(buf, f);
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if (err != 0)
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break;
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indent -= 10;
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}
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/* finally display the line */
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if (err == 0)
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err = PyFile_WriteObject(lineobj, f, Py_PRINT_RAW);
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Py_DECREF(lineobj);
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if (err == 0)
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err = PyFile_WriteString("\n", f);
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return err;
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}
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static int
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tb_displayline(PyObject *f, PyObject *filename, int lineno, PyObject *name)
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{
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int err;
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PyObject *line;
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if (filename == NULL || name == NULL)
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return -1;
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line = PyUnicode_FromFormat(" File \"%U\", line %d, in %U\n",
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filename, lineno, name);
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if (line == NULL)
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return -1;
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err = PyFile_WriteObject(line, f, Py_PRINT_RAW);
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Py_DECREF(line);
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if (err != 0)
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return err;
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/* ignore errors since we can't report them, can we? */
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if (_Py_DisplaySourceLine(f, filename, lineno, 4))
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PyErr_Clear();
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return err;
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}
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static int
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tb_printinternal(PyTracebackObject *tb, PyObject *f, long limit)
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{
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int err = 0;
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long depth = 0;
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PyObject *last_file = NULL;
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int last_line = -1;
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PyObject *last_name = NULL;
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long cnt = 0;
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PyObject *line;
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PyTracebackObject *tb1 = tb;
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while (tb1 != NULL) {
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depth++;
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tb1 = tb1->tb_next;
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}
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while (tb != NULL && err == 0) {
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if (depth <= limit) {
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if (last_file != NULL &&
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tb->tb_frame->f_code->co_filename == last_file &&
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last_line != -1 && tb->tb_lineno == last_line &&
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last_name != NULL &&
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tb->tb_frame->f_code->co_name == last_name) {
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cnt++;
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} else {
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if (cnt > 3) {
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line = PyUnicode_FromFormat(
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" [Previous line repeated %d more times]\n", cnt-3);
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err = PyFile_WriteObject(line, f, Py_PRINT_RAW);
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Py_DECREF(line);
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}
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last_file = tb->tb_frame->f_code->co_filename;
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last_line = tb->tb_lineno;
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last_name = tb->tb_frame->f_code->co_name;
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cnt = 0;
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}
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if (cnt < 3)
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err = tb_displayline(f,
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tb->tb_frame->f_code->co_filename,
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tb->tb_lineno,
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tb->tb_frame->f_code->co_name);
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}
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depth--;
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tb = tb->tb_next;
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if (err == 0)
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err = PyErr_CheckSignals();
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}
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if (cnt > 3) {
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line = PyUnicode_FromFormat(
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" [Previous line repeated %d more times]\n", cnt-3);
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err = PyFile_WriteObject(line, f, Py_PRINT_RAW);
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Py_DECREF(line);
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}
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return err;
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}
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#define PyTraceBack_LIMIT 1000
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int
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PyTraceBack_Print(PyObject *v, PyObject *f)
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{
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int err;
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PyObject *limitv;
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long limit = PyTraceBack_LIMIT;
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if (v == NULL)
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return 0;
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if (!PyTraceBack_Check(v)) {
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PyErr_BadInternalCall();
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return -1;
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}
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limitv = PySys_GetObject("tracebacklimit");
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if (limitv) {
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PyObject *exc_type, *exc_value, *exc_tb;
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PyErr_Fetch(&exc_type, &exc_value, &exc_tb);
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limit = PyLong_AsLong(limitv);
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if (limit == -1 && PyErr_Occurred()) {
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if (PyErr_ExceptionMatches(PyExc_OverflowError)) {
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limit = PyTraceBack_LIMIT;
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}
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else {
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Py_XDECREF(exc_type);
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Py_XDECREF(exc_value);
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Py_XDECREF(exc_tb);
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return 0;
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}
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}
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else if (limit <= 0) {
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limit = PyTraceBack_LIMIT;
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}
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PyErr_Restore(exc_type, exc_value, exc_tb);
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}
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err = PyFile_WriteString("Traceback (most recent call last):\n", f);
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if (!err)
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err = tb_printinternal((PyTracebackObject *)v, f, limit);
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return err;
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}
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/* Reverse a string. For example, "abcd" becomes "dcba".
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This function is signal safe. */
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|
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void
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_Py_DumpDecimal(int fd, unsigned long value)
|
|
{
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/* maximum number of characters required for output of %lld or %p.
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We need at most ceil(log10(256)*SIZEOF_LONG_LONG) digits,
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|
plus 1 for the null byte. 53/22 is an upper bound for log10(256). */
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|
char buffer[1 + (sizeof(unsigned long)*53-1) / 22 + 1];
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char *ptr, *end;
|
|
|
|
end = &buffer[Py_ARRAY_LENGTH(buffer) - 1];
|
|
ptr = end;
|
|
*ptr = '\0';
|
|
do {
|
|
--ptr;
|
|
assert(ptr >= buffer);
|
|
*ptr = '0' + (value % 10);
|
|
value /= 10;
|
|
} while (value);
|
|
|
|
_Py_write_noraise(fd, ptr, end - ptr);
|
|
}
|
|
|
|
/* Format an integer in range [0; 0xffffffff] to hexadecimal of 'width' digits,
|
|
and write it into the file fd.
|
|
|
|
This function is signal safe. */
|
|
|
|
void
|
|
_Py_DumpHexadecimal(int fd, unsigned long value, Py_ssize_t width)
|
|
{
|
|
char buffer[sizeof(unsigned long) * 2 + 1], *ptr, *end;
|
|
const Py_ssize_t size = Py_ARRAY_LENGTH(buffer) - 1;
|
|
|
|
if (width > size)
|
|
width = size;
|
|
/* it's ok if width is negative */
|
|
|
|
end = &buffer[size];
|
|
ptr = end;
|
|
*ptr = '\0';
|
|
do {
|
|
--ptr;
|
|
assert(ptr >= buffer);
|
|
*ptr = Py_hexdigits[value & 15];
|
|
value >>= 4;
|
|
} while ((end - ptr) < width || value);
|
|
|
|
_Py_write_noraise(fd, ptr, end - ptr);
|
|
}
|
|
|
|
void
|
|
_Py_DumpASCII(int fd, PyObject *text)
|
|
{
|
|
PyASCIIObject *ascii = (PyASCIIObject *)text;
|
|
Py_ssize_t i, size;
|
|
int truncated;
|
|
int kind;
|
|
void *data = NULL;
|
|
wchar_t *wstr = NULL;
|
|
Py_UCS4 ch;
|
|
|
|
if (!PyUnicode_Check(text))
|
|
return;
|
|
|
|
size = ascii->length;
|
|
kind = ascii->state.kind;
|
|
if (kind == PyUnicode_WCHAR_KIND) {
|
|
wstr = ((PyASCIIObject *)text)->wstr;
|
|
if (wstr == NULL)
|
|
return;
|
|
size = ((PyCompactUnicodeObject *)text)->wstr_length;
|
|
}
|
|
else if (ascii->state.compact) {
|
|
if (ascii->state.ascii)
|
|
data = ((PyASCIIObject*)text) + 1;
|
|
else
|
|
data = ((PyCompactUnicodeObject*)text) + 1;
|
|
}
|
|
else {
|
|
data = ((PyUnicodeObject *)text)->data.any;
|
|
if (data == NULL)
|
|
return;
|
|
}
|
|
|
|
if (MAX_STRING_LENGTH < size) {
|
|
size = MAX_STRING_LENGTH;
|
|
truncated = 1;
|
|
}
|
|
else {
|
|
truncated = 0;
|
|
}
|
|
|
|
for (i=0; i < size; i++) {
|
|
if (kind != PyUnicode_WCHAR_KIND)
|
|
ch = PyUnicode_READ(kind, data, i);
|
|
else
|
|
ch = wstr[i];
|
|
if (' ' <= ch && ch <= 126) {
|
|
/* printable ASCII character */
|
|
char c = (char)ch;
|
|
_Py_write_noraise(fd, &c, 1);
|
|
}
|
|
else if (ch <= 0xff) {
|
|
PUTS(fd, "\\x");
|
|
_Py_DumpHexadecimal(fd, ch, 2);
|
|
}
|
|
else if (ch <= 0xffff) {
|
|
PUTS(fd, "\\u");
|
|
_Py_DumpHexadecimal(fd, ch, 4);
|
|
}
|
|
else {
|
|
PUTS(fd, "\\U");
|
|
_Py_DumpHexadecimal(fd, ch, 8);
|
|
}
|
|
}
|
|
if (truncated) {
|
|
PUTS(fd, "...");
|
|
}
|
|
}
|
|
|
|
/* Write a frame into the file fd: "File "xxx", line xxx in xxx".
|
|
|
|
This function is signal safe. */
|
|
|
|
static void
|
|
dump_frame(int fd, PyFrameObject *frame)
|
|
{
|
|
PyCodeObject *code;
|
|
int lineno;
|
|
|
|
code = frame->f_code;
|
|
PUTS(fd, " File ");
|
|
if (code != NULL && code->co_filename != NULL
|
|
&& PyUnicode_Check(code->co_filename))
|
|
{
|
|
PUTS(fd, "\"");
|
|
_Py_DumpASCII(fd, code->co_filename);
|
|
PUTS(fd, "\"");
|
|
} else {
|
|
PUTS(fd, "???");
|
|
}
|
|
|
|
/* PyFrame_GetLineNumber() was introduced in Python 2.7.0 and 3.2.0 */
|
|
lineno = PyCode_Addr2Line(code, frame->f_lasti);
|
|
PUTS(fd, ", line ");
|
|
if (lineno >= 0) {
|
|
_Py_DumpDecimal(fd, (unsigned long)lineno);
|
|
}
|
|
else {
|
|
PUTS(fd, "???");
|
|
}
|
|
PUTS(fd, " in ");
|
|
|
|
if (code != NULL && code->co_name != NULL
|
|
&& PyUnicode_Check(code->co_name)) {
|
|
_Py_DumpASCII(fd, code->co_name);
|
|
}
|
|
else {
|
|
PUTS(fd, "???");
|
|
}
|
|
|
|
PUTS(fd, "\n");
|
|
}
|
|
|
|
static void
|
|
dump_traceback(int fd, PyThreadState *tstate, int write_header)
|
|
{
|
|
PyFrameObject *frame;
|
|
unsigned int depth;
|
|
|
|
if (write_header)
|
|
PUTS(fd, "Stack (most recent call first):\n");
|
|
|
|
frame = _PyThreadState_GetFrame(tstate);
|
|
if (frame == NULL)
|
|
return;
|
|
|
|
depth = 0;
|
|
while (frame != NULL) {
|
|
if (MAX_FRAME_DEPTH <= depth) {
|
|
PUTS(fd, " ...\n");
|
|
break;
|
|
}
|
|
if (!PyFrame_Check(frame))
|
|
break;
|
|
dump_frame(fd, frame);
|
|
frame = frame->f_back;
|
|
depth++;
|
|
}
|
|
}
|
|
|
|
/* Dump the traceback of a Python thread into fd. Use write() to write the
|
|
traceback and retry if write() is interrupted by a signal (failed with
|
|
EINTR), but don't call the Python signal handler.
|
|
|
|
The caller is responsible to call PyErr_CheckSignals() to call Python signal
|
|
handlers if signals were received. */
|
|
void
|
|
_Py_DumpTraceback(int fd, PyThreadState *tstate)
|
|
{
|
|
dump_traceback(fd, tstate, 1);
|
|
}
|
|
|
|
/* Write the thread identifier into the file 'fd': "Current thread 0xHHHH:\" if
|
|
is_current is true, "Thread 0xHHHH:\n" otherwise.
|
|
|
|
This function is signal safe. */
|
|
|
|
static void
|
|
write_thread_id(int fd, PyThreadState *tstate, int is_current)
|
|
{
|
|
if (is_current)
|
|
PUTS(fd, "Current thread 0x");
|
|
else
|
|
PUTS(fd, "Thread 0x");
|
|
_Py_DumpHexadecimal(fd,
|
|
tstate->thread_id,
|
|
sizeof(unsigned long) * 2);
|
|
PUTS(fd, " (most recent call first):\n");
|
|
}
|
|
|
|
/* Dump the traceback of all Python threads into fd. Use write() to write the
|
|
traceback and retry if write() is interrupted by a signal (failed with
|
|
EINTR), but don't call the Python signal handler.
|
|
|
|
The caller is responsible to call PyErr_CheckSignals() to call Python signal
|
|
handlers if signals were received. */
|
|
const char*
|
|
_Py_DumpTracebackThreads(int fd, PyInterpreterState *interp,
|
|
PyThreadState *current_tstate)
|
|
{
|
|
PyThreadState *tstate;
|
|
unsigned int nthreads;
|
|
|
|
if (current_tstate == NULL) {
|
|
/* _Py_DumpTracebackThreads() is called from signal handlers by
|
|
faulthandler.
|
|
|
|
SIGSEGV, SIGFPE, SIGABRT, SIGBUS and SIGILL are synchronous signals
|
|
and are thus delivered to the thread that caused the fault. Get the
|
|
Python thread state of the current thread.
|
|
|
|
PyThreadState_Get() doesn't give the state of the thread that caused
|
|
the fault if the thread released the GIL, and so this function
|
|
cannot be used. Read the thread specific storage (TSS) instead: call
|
|
PyGILState_GetThisThreadState(). */
|
|
current_tstate = PyGILState_GetThisThreadState();
|
|
}
|
|
|
|
if (interp == NULL) {
|
|
if (current_tstate == NULL) {
|
|
interp = _PyGILState_GetInterpreterStateUnsafe();
|
|
if (interp == NULL) {
|
|
/* We need the interpreter state to get Python threads */
|
|
return "unable to get the interpreter state";
|
|
}
|
|
}
|
|
else {
|
|
interp = current_tstate->interp;
|
|
}
|
|
}
|
|
assert(interp != NULL);
|
|
|
|
/* Get the current interpreter from the current thread */
|
|
tstate = PyInterpreterState_ThreadHead(interp);
|
|
if (tstate == NULL)
|
|
return "unable to get the thread head state";
|
|
|
|
/* Dump the traceback of each thread */
|
|
tstate = PyInterpreterState_ThreadHead(interp);
|
|
nthreads = 0;
|
|
_Py_BEGIN_SUPPRESS_IPH
|
|
do
|
|
{
|
|
if (nthreads != 0)
|
|
PUTS(fd, "\n");
|
|
if (nthreads >= MAX_NTHREADS) {
|
|
PUTS(fd, "...\n");
|
|
break;
|
|
}
|
|
write_thread_id(fd, tstate, tstate == current_tstate);
|
|
dump_traceback(fd, tstate, 0);
|
|
tstate = PyThreadState_Next(tstate);
|
|
nthreads++;
|
|
} while (tstate != NULL);
|
|
_Py_END_SUPPRESS_IPH
|
|
|
|
return NULL;
|
|
}
|
|
|