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Issue #12209: Minor edits to faulthandler doc. Patch written by Éric Araujo.

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This commit is contained in:
Victor Stinner 2014-03-25 12:33:56 +01:00
parent 4908910ab7
commit 215ad66405
1 changed files with 17 additions and 11 deletions
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28
Doc/library/faulthandler.rst
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@ -11,7 +11,7 @@ after a timeout, or on a user signal. Call :func:`faulthandler.enable` to
install fault handlers for the :const:`SIGSEGV`, :const:`SIGFPE`,
:const:`SIGABRT`, :const:`SIGBUS`, and :const:`SIGILL` signals. You can also
enable them at startup by setting the :envvar:`PYTHONFAULTHANDLER` environment
variable or by using :option:`-X` ``faulthandler`` command line option.
variable or by using the :option:`-X` ``faulthandler`` command line option.
The fault handler is compatible with system fault handlers like Apport or the
Windows fault handler. The module uses an alternative stack for signal handlers
@ -39,8 +39,8 @@ The module is implemented in C, so tracebacks can be dumped on a crash or when
Python is deadlocked.
Dump the traceback
------------------
Dumping the traceback
---------------------
.. function:: dump_traceback(file=sys.stderr, all_threads=True)
@ -69,8 +69,8 @@ Fault handler state
Check if the fault handler is enabled.
Dump the tracebacks after a timeout
-----------------------------------
Dumping the tracebacks after a timeout
--------------------------------------
.. function:: dump_traceback_later(timeout, repeat=False, file=sys.stderr, exit=False)
@ -90,8 +90,8 @@ Dump the tracebacks after a timeout
Cancel the last call to :func:`dump_traceback_later`.
Dump the traceback on a user signal
-----------------------------------
Dumping the traceback on a user signal
--------------------------------------
.. function:: register(signum, file=sys.stderr, all_threads=True, chain=False)
@ -110,8 +110,8 @@ Dump the traceback on a user signal
Not available on Windows.
File descriptor issue
---------------------
Issue with file descriptors
---------------------------
:func:`enable`, :func:`dump_traceback_later` and :func:`register` keep the
file descriptor of their *file* argument. If the file is closed and its file
@ -123,9 +123,15 @@ these functions again each time that the file is replaced.
Example
-------
Example of a segmentation fault on Linux: ::
.. highlight:: sh
$ python -q -X faulthandler
Example of a segmentation fault on Linux with and without enabling the fault
handler::
$ python3 -c "import ctypes; ctypes.string_at(0)"
Segmentation fault
$ python3 -q -X faulthandler
>>> import ctypes
>>> ctypes.string_at(0)
Fatal Python error: Segmentation fault