Victor Stinner [Wed, 23 Mar 2016 09:39:17 +0000 (10:39 +0100)]
faulthandler: add Windows exception handler
Issue #23848: On Windows, faulthandler.enable() now also installs an exception
handler to dump the traceback of all Python threads on any Windows exception,
not only on UNIX signals (SIGSEGV, SIGFPE, SIGABRT).
Victor Stinner [Wed, 23 Mar 2016 08:52:13 +0000 (09:52 +0100)]
Cleanup hashtable.h
Issue #26588:
* Pass the hash table rather than the key size to hash and compare functions
* _Py_HASHTABLE_READ_KEY() and _Py_HASHTABLE_ENTRY_READ_KEY() macros now expect
the hash table as the first parameter, rather than the key size
* tracemalloc_get_traces_fill(): use _Py_HASHTABLE_ENTRY_READ_DATA() rather
than pointer dereference
* Remove the _Py_HASHTABLE_ENTRY_WRITE_PKEY() macro
* Move "PKEY" and "PDATA" macros inside hashtable.c
Victor Stinner [Wed, 23 Mar 2016 08:38:54 +0000 (09:38 +0100)]
Issue #26588:
* Optimize tracemalloc_add_trace(): modify hashtable entry data (trace) if the
memory block is already tracked, rather than trying to remove the old trace
and then add a new trace.
* Add _Py_HASHTABLE_ENTRY_WRITE_DATA() macro
Victor Stinner [Wed, 23 Mar 2016 01:05:39 +0000 (02:05 +0100)]
Makefile: change default value of TESTTIMEOUT from 1 hour to 15 min
The whole test suite takes 6 minutes on my laptop. It takes less than 30
minutes on most buildbots. The TESTTIMEOUT is the timeout for a single test
file.
Victor Stinner [Tue, 22 Mar 2016 23:54:48 +0000 (00:54 +0100)]
_warnings.warn_explicit(): try to import warnings
Issue #26592: _warnings.warn_explicit() now tries to import the warnings module
(Python implementation) if the source parameter is set to be able to log the
traceback where the source was allocated.
Victor Stinner [Tue, 22 Mar 2016 23:43:54 +0000 (00:43 +0100)]
Implement finalizer for os.scandir() iterator
Issue #26603:
* Implement finalizer for os.scandir() iterator
* Set the source parameter when emitting the ResourceWarning warning
* Close the iterator before emitting the warning
Victor Stinner [Tue, 22 Mar 2016 23:28:08 +0000 (00:28 +0100)]
Add a source parameter to warnings.warn()
Issue #26604:
* Add a new optional source parameter to _warnings.warn() and warnings.warn()
* Modify asyncore, asyncio and _pyio modules to set the source parameter when
logging a ResourceWarning warning
Victor Stinner [Tue, 22 Mar 2016 23:10:24 +0000 (00:10 +0100)]
Fix _tracemalloc start/stop
Issue #26588: Fix _tracemalloc start/stop: don't play with the reentrant flag.
set_reentrant(1) fails with an assertion error if tracemalloc_init() is called
first in a thread A and tracemalloc_start() is called second in a thread B. The
tracemalloc is imported in a thread A. Importing the module calls
tracemalloc_init(). tracemalloc.start() is called in a thread B.
Victor Stinner [Tue, 22 Mar 2016 12:39:05 +0000 (13:39 +0100)]
Add C functions _PyTraceMalloc_Track()
Issue #26530:
* Add C functions _PyTraceMalloc_Track() and _PyTraceMalloc_Untrack() to track
memory blocks using the tracemalloc module.
* Add _PyTraceMalloc_GetTraceback() to get the traceback of an object.
Victor Stinner [Tue, 22 Mar 2016 11:58:23 +0000 (12:58 +0100)]
tracemalloc now supports domains
Issue #26588:
* The _tracemalloc now supports tracing memory allocations of multiple address
spaces (domains).
* Add domain parameter to tracemalloc_add_trace() and
tracemalloc_remove_trace().
* tracemalloc_add_trace() now starts by removing the previous trace, if any.
* _tracemalloc._get_traces() now returns a list of (domain, size,
traceback_frames): the domain is new.
* Add tracemalloc.DomainFilter
* tracemalloc.Filter: add an optional domain parameter to the constructor and a
domain attribute
* Sublte change: use Py_uintptr_t rather than void* in the traces key.
* Add tracemalloc_config.use_domain, currently hardcoded to 1
Victor Stinner [Tue, 22 Mar 2016 11:25:04 +0000 (12:25 +0100)]
Remove _Py_hashtable_delete()
Issue #26588: Remove _Py_hashtable_delete() from hashtable.h since the function
is not used. Keep the C code in hashtable.c as commented code if someone needs
it later.
Victor Stinner [Tue, 22 Mar 2016 11:13:01 +0000 (12:13 +0100)]
Simplify implementation of hashtable.c
Issue #26588: Remove copy_data, free_data and get_data_size callbacks from
hashtable.h. These callbacks are not used in Python and makes the code more
complex.
Remove also the _Py_HASHTABLE_ENTRY_DATA_AS_VOID_P() macro which uses an unsafe
pointer dereference (can cause memory alignment issue). Replace the macro usage
with _Py_HASHTABLE_ENTRY_READ_DATA() which is implemented with the safe
memcpy() function.
Victor Stinner [Mon, 21 Mar 2016 21:00:58 +0000 (22:00 +0100)]
hashtable.h now supports keys of any size
Issue #26588: hashtable.h now supports keys of any size, not only
sizeof(void*). It allows to support key larger than sizeof(void*), but also to
use less memory for key smaller than sizeof(void*).
Victor Stinner [Mon, 21 Mar 2016 16:26:04 +0000 (17:26 +0100)]
Fix test_ssl.test_refcycle()
Issue #26590: support.check_warnings() stores warnins, but ResourceWarning now
comes with a reference to the socket object which indirectly keeps the socket
alive.
Victor Stinner [Mon, 21 Mar 2016 15:36:48 +0000 (16:36 +0100)]
Add socket finalizer
Issue #26590: Implement a safe finalizer for the _socket.socket type. It now
releases the GIL to close the socket. Use PyErr_ResourceWarning() to raise the
ResourceWarning to pass the socket object to the warning logger, to get the
traceback where the socket was created (allocated).
Victor Stinner [Sat, 19 Mar 2016 00:03:51 +0000 (01:03 +0100)]
On ResourceWarning, log traceback where the object was allocated
Issue #26567:
* Add a new function PyErr_ResourceWarning() function to pass the destroyed
object
* Add a source attribute to warnings.WarningMessage
* Add warnings._showwarnmsg() which uses tracemalloc to get the traceback where
source object was allocated.
Victor Stinner [Fri, 18 Mar 2016 23:47:17 +0000 (00:47 +0100)]
Add _showwarnmsg() and _formatwarnmsg() to warnings
Issue #26568: add new _showwarnmsg() and _formatwarnmsg() functions to the
warnings module.
The C function warn_explicit() now calls warnings._showwarnmsg() with a
warnings.WarningMessage as parameter, instead of calling warnings.showwarning()
with multiple parameters.
_showwarnmsg() calls warnings.showwarning() if warnings.showwarning() was
replaced. Same for _formatwarnmsg(): call warnings.formatwarning() if it was
replaced.