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traceback.h 3.6 KB

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  1. #ifndef Py_TRACEBACK_H
  2. #define Py_TRACEBACK_H
  3. #ifdef __cplusplus
  4. extern "C" {
  5. #endif
  6. #include "pystate.h"
  7. struct _frame;
  8. /* Traceback interface */
  9. #ifndef Py_LIMITED_API
  10. typedef struct _traceback {
  11. PyObject_HEAD
  12. struct _traceback *tb_next;
  13. struct _frame *tb_frame;
  14. int tb_lasti;
  15. int tb_lineno;
  16. } PyTracebackObject;
  17. #endif
  18. PyAPI_FUNC(int) PyTraceBack_Here(struct _frame *);
  19. PyAPI_FUNC(int) PyTraceBack_Print(PyObject *, PyObject *);
  20. #ifndef Py_LIMITED_API
  21. PyAPI_FUNC(int) _Py_DisplaySourceLine(PyObject *, PyObject *, int, int);
  22. PyAPI_FUNC(void) _PyTraceback_Add(const char *, const char *, int);
  23. #endif
  24. /* Reveal traceback type so we can typecheck traceback objects */
  25. PyAPI_DATA(PyTypeObject) PyTraceBack_Type;
  26. #define PyTraceBack_Check(v) (Py_TYPE(v) == &PyTraceBack_Type)
  27. #ifndef Py_LIMITED_API
  28. /* Write the Python traceback into the file 'fd'. For example:
  29. Traceback (most recent call first):
  30. File "xxx", line xxx in <xxx>
  31. File "xxx", line xxx in <xxx>
  32. ...
  33. File "xxx", line xxx in <xxx>
  34. This function is written for debug purpose only, to dump the traceback in
  35. the worst case: after a segmentation fault, at fatal error, etc. That's why,
  36. it is very limited. Strings are truncated to 100 characters and encoded to
  37. ASCII with backslashreplace. It doesn't write the source code, only the
  38. function name, filename and line number of each frame. Write only the first
  39. 100 frames: if the traceback is truncated, write the line " ...".
  40. This function is signal safe. */
  41. PyAPI_FUNC(void) _Py_DumpTraceback(
  42. int fd,
  43. PyThreadState *tstate);
  44. /* Write the traceback of all threads into the file 'fd'. current_thread can be
  45. NULL.
  46. Return NULL on success, or an error message on error.
  47. This function is written for debug purpose only. It calls
  48. _Py_DumpTraceback() for each thread, and so has the same limitations. It
  49. only write the traceback of the first 100 threads: write "..." if there are
  50. more threads.
  51. If current_tstate is NULL, the function tries to get the Python thread state
  52. of the current thread. It is not an error if the function is unable to get
  53. the current Python thread state.
  54. If interp is NULL, the function tries to get the interpreter state from
  55. the current Python thread state, or from
  56. _PyGILState_GetInterpreterStateUnsafe() in last resort.
  57. It is better to pass NULL to interp and current_tstate, the function tries
  58. different options to retrieve these informations.
  59. This function is signal safe. */
  60. PyAPI_FUNC(const char*) _Py_DumpTracebackThreads(
  61. int fd,
  62. PyInterpreterState *interp,
  63. PyThreadState *current_tstate);
  64. #endif /* !Py_LIMITED_API */
  65. #ifndef Py_LIMITED_API
  66. /* Write a Unicode object into the file descriptor fd. Encode the string to
  67. ASCII using the backslashreplace error handler.
  68. Do nothing if text is not a Unicode object. The function accepts Unicode
  69. string which is not ready (PyUnicode_WCHAR_KIND).
  70. This function is signal safe. */
  71. PyAPI_FUNC(void) _Py_DumpASCII(int fd, PyObject *text);
  72. /* Format an integer as decimal into the file descriptor fd.
  73. This function is signal safe. */
  74. PyAPI_FUNC(void) _Py_DumpDecimal(
  75. int fd,
  76. unsigned long value);
  77. /* Format an integer as hexadecimal into the file descriptor fd with at least
  78. width digits.
  79. The maximum width is sizeof(unsigned long)*2 digits.
  80. This function is signal safe. */
  81. PyAPI_FUNC(void) _Py_DumpHexadecimal(
  82. int fd,
  83. unsigned long value,
  84. Py_ssize_t width);
  85. #endif /* !Py_LIMITED_API */
  86. #ifdef __cplusplus
  87. }
  88. #endif
  89. #endif /* !Py_TRACEBACK_H */
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