Commit Graph

68 Commits

Author SHA1 Message Date
Victor Stinner bfd316e750 Add _PyThreadState_UncheckedGet()
Issue #26154: Add a new private _PyThreadState_UncheckedGet() function which
gets the current thread state, but don't call Py_FatalError() if it is NULL.

Python 3.5.1 removed the _PyThreadState_Current symbol from the Python C API to
no more expose complex and private atomic types. Atomic types depends on the
compiler or can even depend on compiler options. The new function
_PyThreadState_UncheckedGet() allows to get the variable value without having
to care of the exact implementation of atomic types.

Changes:

* Replace direct usage of the _PyThreadState_Current variable with a call to
  _PyThreadState_UncheckedGet().
* In pystate.c, replace direct usage of the _PyThreadState_Current variable
  with the PyThreadState_GET() macro for readability.
* Document also PyThreadState_Get() in pystate.h
2016-01-20 11:12:38 +01:00
Serhiy Storchaka 5a57ade58e Issue #20440: Massive replacing unsafe attribute setting code with special
macro Py_SETREF.
2015-12-24 10:35:59 +02:00
Serhiy Storchaka ac5569b1fa Issue #24115: Update uses of PyObject_IsTrue(), PyObject_Not(),
PyObject_IsInstance(), PyObject_RichCompareBool() and _PyDict_Contains()
to check for and handle errors correctly.
2015-05-30 17:48:19 +03:00
Serhiy Storchaka fa494fd883 Issue #24115: Update uses of PyObject_IsTrue(), PyObject_Not(),
PyObject_IsInstance(), PyObject_RichCompareBool() and _PyDict_Contains()
to check for and handle errors correctly.
2015-05-30 17:45:22 +03:00
Victor Stinner c7489a5595 Issue #23836: Fix the faulthandler module to handle reentrant calls
to its signal handlers.

Use also _Py_write_noraise() instead of write() to retry write() if it is
interrupted by a signal (fail with EINTR).

faulthandler.dump_traceback() also calls PyErr_CheckSignals() to call the
Python signal handler if a signal was received.
2015-04-01 18:48:58 +02:00
Victor Stinner d1f3a002c3 Merge 3.4 (faulthandler ICC) 2015-03-23 21:21:00 +01:00
Victor Stinner 19276f184f Issue #23654: Fix faulthandler._stack_overflow() for the Intel C Compiler (ICC)
Issue #23654: Turn off ICC's tail call optimization for the stack_overflow
generator. ICC turns the recursive tail call into a loop.

Patch written by Matt Frank.
2015-03-23 21:20:27 +01:00
Victor Stinner 95bb714ff7 Issue #23566: enable(), register(), dump_traceback() and dump_traceback_later()
functions of faulthandler now accept file descriptors. Patch by Wei Wu.
2015-03-12 15:32:03 +01:00
Serhiy Storchaka 53fa8b2a4b Fixed few compiler warnings. 2015-02-16 09:40:12 +02:00
Victor Stinner 385efb4d99 Merge 3.4 (faulthandler) 2015-02-11 14:23:46 +01:00
Victor Stinner 7a5567a92c Issue #23433: Fix faulthandler._stack_overflow()
Fix undefined behaviour: don't compare pointers. Use Py_uintptr_t type instead
of void*. It fixes test_faulthandler on Fedora 22 which now uses GCC 5.
2015-02-11 14:23:35 +01:00
Victor Stinner 6b8e0ed562 (Merge 3.4) faulthandler: test_gil_released() now uses _sigsegv() instead of
_read_null(), because _read_null() cannot be used on AIX. On AIX, reading from
NULL is allowed: the first page of memory is a mapped read-only on AIX.

_read_null() and _sigabrt() don't accept parameters.
2014-09-30 13:55:30 +02:00
Victor Stinner 5083828d65 faulthandler: test_gil_released() now uses _sigsegv() instead of _read_null(),
because _read_null() cannot be used on AIX. On AIX, reading from NULL is
allowed: the first page of memory is a mapped read-only on AIX.
2014-09-30 13:54:14 +02:00
Victor Stinner 9db521c4a8 faulthandler: _sigsegv() and _sigabrt() don't accept parameters 2014-09-30 13:49:09 +02:00
Victor Stinner 7a39912dda faulthandler: suppress crash reporter directly in test functions written to
crash.
2014-09-30 13:40:12 +02:00
Victor Stinner 56e8c29a4e Issue #22018: Add _testcapi.raise_signal()
- Use _testcapi.raise_signal() in test_signal
- close also os.pipe() file descriptors in some test_signal tests where they
  were not closed properly
- Remove faulthandler._sigill() and faulthandler._sigbus(): reuse
  _testcapi.raise_signal() in test_faulthandler
2014-07-21 12:30:22 +02:00
Victor Stinner e2d66903e8 Issue #21497: faulthandler functions now raise a better error if sys.stderr is
None: RuntimeError("sys.stderr is None") instead of AttributeError("'NoneType'
object has no attribute 'fileno'").
2014-05-14 17:15:50 +02:00
R David Murray 3c2a178af2 Merge: #19970: Fix some comment typos. 2013-12-13 20:53:26 -05:00
R David Murray fc06999e0b #19970: Fix some comment typos.
Report and patch by Vajrasky Kok.
2013-12-13 20:52:19 -05:00
Victor Stinner bd303c165b Issue #19512, #19515: remove shared identifiers, move identifiers where they
are used.

Move also _Py_IDENTIFIER() defintions to the top in modified files to remove
identifiers duplicated in the same file.
2013-11-07 23:07:29 +01:00
Victor Stinner 090543736f Issue #19512: add some common identifiers to only create common strings once,
instead of creating temporary Unicode string objects

Add also more identifiers in pythonrun.c to avoid temporary Unicode string
objets for the interactive interpreter.
2013-11-06 22:41:44 +01:00
Victor Stinner 8898350076 Close #18957: The PYTHONFAULTHANDLER environment variable now only enables the
faulthandler module if the variable is non-empty. Same behaviour than other
variables like PYTHONDONTWRITEBYTECODE.
2013-09-08 11:36:23 +02:00
Victor Stinner 49fc8ece81 Issue #18203: Add _PyMem_RawStrdup() and _PyMem_Strdup()
Replace strdup() with _PyMem_RawStrdup() or _PyMem_Strdup(), depending if the
GIL is held or not.
2013-07-07 23:30:24 +02:00
Victor Stinner 0857ab4c77 (Merge 3.3) Issue #18343: faulthandler.register() now keeps the previous signal
handler when the function is called twice, so faulthandler.unregister()
restores correctly the original signal handler.
2013-07-02 00:17:14 +02:00
Victor Stinner 8d3795474e Issue #18343: faulthandler.register() now keeps the previous signal handler
when the function is called twice, so faulthandler.unregister() restores
correctly the original signal handler.
2013-07-02 00:14:56 +02:00
Victor Stinner 56cb12542d Issue #9566: Explicit downcast to fix compiler warnings on Win64 2012-10-31 00:33:57 +01:00
Jesus Cea 14c81aba50 #16135: Removal of OS/2 support (Modules/*) 2012-10-05 02:11:36 +02:00
Georg Brandl deb92b5b1b Closes #15969: rename new API to have consistent names in the faulthandler module. 2012-09-22 08:58:55 +02:00
Victor Stinner 3cc635dabb faulthandler: fix the handler of user signals
Restore the errno before calling the previous signal handler, and not after.
2012-08-09 02:43:41 +02:00
Victor Stinner 98a387b65f Fix the user signal handler of faulthandler
Don't exit the tstate is NULL to restore the errno and chain the signal handler
if needed.
2012-08-01 19:36:36 +02:00
Charles-François Natali 55bce63ea0 Issue #14154: Reimplement the bigmem test memory watchdog as a subprocess. 2012-03-24 10:06:23 +01:00
Victor Stinner a2477208c8 Issue #13874: read_null() of faulthandler uses volatile to avoid optimisation
Clang 3.0 removes "y = *x;" instruction if the optimisation level is 3.
2012-01-30 00:07:43 +01:00
Victor Stinner 1134b0dbbd Fix _PyFaulthandler_Fini() so it can be called before _PyFaulthandler_Init() 2012-01-10 22:44:11 +01:00
Martin v. Löwis bd928fef42 Rename _Py_identifier to _Py_IDENTIFIER. 2011-10-14 10:20:37 +02:00
Martin v. Löwis afe55bba33 Add API for static strings, primarily good for identifiers.
Thanks to Konrad Schöbel and Jasper Schulz for helping with the mass-editing.
2011-10-09 10:38:36 +02:00
Antoine Pitrou b244d075fb Fix compilation error under Windows 2011-10-04 13:00:02 +02:00
Antoine Pitrou 75e78b6c77 Use the faulthandler module's infrastructure to write a GIL-less
memory watchdog for timely stats collection.
2011-10-04 11:51:23 +02:00
Victor Stinner 639418812f Use the new Py_ARRAY_LENGTH macro 2011-09-29 00:42:28 +02:00
Victor Stinner 425fcd3045 Issue #12929: faulthandler now uses char* for arithmetic on pointers
instead of void*
2011-09-07 16:18:56 +02:00
Victor Stinner a9a9dab042 Issue #12550: Add chain optional argument to faulthandler.register()
Call the previous signal handler if chain is True.
2011-07-13 23:39:53 +02:00
Victor Stinner 0aafa4f1e2 faulthandler: add missing include, pthread.h, for FreeBSD 6 2011-06-29 23:28:02 +02:00
Victor Stinner 25095b2be6 Remove useless assignments
Warnings found by the the Clang Static Analyzer.
2011-05-26 13:47:08 +02:00
Victor Stinner 9b49304790 Close #12153: faulthandler, mark stack_overflow() as static 2011-05-23 12:29:10 +02:00
Victor Stinner 410dd7d357 Issue #12058: Minor edits to comments in faulthandler
Patch written by Éric Araujo.
2011-05-11 20:56:08 +02:00
Victor Stinner 00bc6ccb78 faulthandler: improve_sigabrt() on Visual Studio
Use _set_abort_behavior() + abort() instead of raise(SIGABRT) which may write
an error message and/or open a popup asking to report the fault.
2011-05-10 01:30:03 +02:00
Victor Stinner e0c9a7533c faulthandler: make quiet a gcc 4.6 warning (z was unused) 2011-05-09 14:44:26 +02:00
Victor Stinner 7bba62fd68 faulthandler: dump all threads by default
* Set the default value of all_threads arguments to True
 * Py_FatalError() dumps all threads, instead of only the current thread

Dump only the current thread is not reliable. In some cases, Python is unable
to retrieve the state of the current thread and so is unable to dump the
traceback. faulthandler keeps a reference to the interpreter and so is always
able to dump the traceback of all threads.
2011-05-07 12:43:00 +02:00
Victor Stinner c925617b54 faulthandler: save/restore errno in the two signal handlers 2011-05-07 12:20:11 +02:00
Victor Stinner cf2a807831 faulthandler: don't use sigprocmask()
It has an undefined behaviour with threads, only use pthread_sigmask() if
it is available (and not broken).
2011-04-19 23:30:57 +02:00
Victor Stinner a4de6d885f Improve faulthandler.enable(all_threads=True)
faulthandler.enable(all_threads=True) dumps the tracebacks even if it is not
possible to get the state of the current thread

Create also the get_thread_state() subfunction to factorize the code.
2011-04-09 00:47:23 +02:00