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nnorwitz · nnorwitz · commit f5c7c2eeca4c · 2008-04-05T04:47:45.000Z
svn+ssh://pythondev@svn.python.org/python/trunk ........ r62127 | trent.nelson | 2008-04-03 08:39:17 -0700 (Thu, 03 Apr 2008) | 1 line Remove the building of Berkeley DB step; _bsddb44.vcproj takes care of this for us now. ........ r62136 | amaury.forgeotdarc | 2008-04-03 16:07:55 -0700 (Thu, 03 Apr 2008) | 9 lines #1733757: the interpreter would hang on shutdown, if the function set by sys.settrace calls threading.currentThread. The correction somewhat improves the code, but it was close. Many thanks to the "with" construct, which turns python code into C calls. I wonder if it is not better to sys.settrace(None) just after running the __main__ module and before finalization. ........ r62141 | jeffrey.yasskin | 2008-04-03 21:51:19 -0700 (Thu, 03 Apr 2008) | 5 lines Doh! os.read() raises an OSError, not an IOError when it's interrupted. And fix some flakiness in test_itimer_prof, which could detect that the timer had reached 0 before the signal arrived announcing that fact. ........ r62142 | fred.drake | 2008-04-03 22:41:30 -0700 (Thu, 03 Apr 2008) | 4 lines - Issue #2385: distutils.core.run_script() makes __file__ available, so the controlled environment will more closely mirror the typical script environment. This supports setup.py scripts that refer to data files. ........ r62147 | fred.drake | 2008-04-04 04:31:14 -0700 (Fri, 04 Apr 2008) | 6 lines my previous change did what I said it should not: it changed the current directory to the directory in which the setup.py script lived (which made __file__ wrong) fixed, with test that the script is run in the current directory of the caller ........ r62148 | fred.drake | 2008-04-04 04:38:51 -0700 (Fri, 04 Apr 2008) | 2 lines stupid, stupid, stupid! ........ r62150 | jeffrey.yasskin | 2008-04-04 09:48:19 -0700 (Fri, 04 Apr 2008) | 2 lines Oops again. EINTR is in errno, not signal. ........ r62158 | andrew.kuchling | 2008-04-04 19:42:20 -0700 (Fri, 04 Apr 2008) | 1 line Minor edits ........ r62159 | andrew.kuchling | 2008-04-04 19:47:07 -0700 (Fri, 04 Apr 2008) | 1 line Markup fix; explain what interval timers do; typo fix ........ r62160 | andrew.kuchling | 2008-04-04 20:38:39 -0700 (Fri, 04 Apr 2008) | 1 line Various edits ........ r62161 | neal.norwitz | 2008-04-04 21:26:31 -0700 (Fri, 04 Apr 2008) | 9 lines Prevent test_sqlite from hanging on older versions of sqlite. The problem is that when trying to do the second insert, sqlite seems to sleep for a very long time. Here is the output from strace: read(6, "SQLite format 3\0\4\0\1\1\0@ \0\0\0\1\0\0\0\0"..., 1024) = 1024 nanosleep({4294, 966296000}, <unfinished ...> I don't know which version this was fixed in, but 3.2.1 definitely fails. ........
diff --git a/Doc/library/signal.rst b/Doc/library/signal.rst
@@ -82,7 +82,7 @@ The variables defined in the :mod:`signal` module are:
 
 .. data:: ITIMER_REAL    
 
-   Decrements interval timer in real time, and delivers SIGALRM upon expiration.
+   Decrements interval timer in real time, and delivers :const:`SIGALRM` upon expiration.
 
 
 .. data:: ITIMER_VIRTUAL 
@@ -143,12 +143,18 @@ The :mod:`signal` module defines the following functions:
 
 .. function:: setitimer(which, seconds[, interval])
 
-   Sets given itimer (one of :const:`signal.ITIMER_REAL`, 
-   :const:`signal.ITIMER_VIRTUAL` or :const:`signal.ITIMER_PROF`) especified
+   Sets given interval timer (one of :const:`signal.ITIMER_REAL`, 
+   :const:`signal.ITIMER_VIRTUAL` or :const:`signal.ITIMER_PROF`) specified
    by *which* to fire after *seconds* (float is accepted, different from 
    :func:`alarm`) and after that every *interval* seconds. The interval
    timer specified by *which* can be cleared by setting seconds to zero.
 
+   When an interval timer fires, a signal is sent to the process.
+   The signal sent is dependent on the timer being used; 
+   :const:`signal.ITIMER_REAL` will deliver :const:`SIGALRM`, 
+   :const:`signal.ITIMER_VIRTUAL` sends :const:`SIGVTALRM`,
+   and :const:`signal.ITIMER_PROF` will deliver :const:`SIGPROF`.
+
    The old values are returned as a tuple: (delay, interval).
 
    Attempting to pass an invalid interval timer will cause a 
@@ -159,7 +165,7 @@ The :mod:`signal` module defines the following functions:
 
 .. function:: getitimer(which)
 
-   Returns current value of a given itimer especified by *which*.
+   Returns current value of a given interval timer specified by *which*.
 
    .. versionadded:: 2.6
 
diff --git a/Doc/whatsnew/2.6.rst b/Doc/whatsnew/2.6.rst
@@ -133,8 +133,11 @@ The infrastructure committee of the Python Software Foundation
 therefore posted a call for issue trackers, asking volunteers to set
 up different products and import some of the bugs and patches from
 SourceForge.  Four different trackers were examined: Atlassian's `Jira
-<XXX>`__, `Launchpad <http://www.launchpad.net>`__, ` `Roundup
-<XXX>`__, and Trac <XXX>`__.  The committee eventually settled on Jira
+<http://www.atlassian.com/software/jira/>`__, 
+`Launchpad <http://www.launchpad.net>`__, 
+`Roundup <http://roundup.sourceforge.net/>`__, and 
+Trac <http://trac.edgewall.org/>`__.  
+The committee eventually settled on Jira
 and Roundup as the two candidates.  Jira is a commercial product that
 offers a no-cost hosted instance to free-software projects; Roundup 
 is an open-source project that requires volunteers
@@ -146,19 +149,18 @@ host multiple trackers, and this server now also hosts issue trackers
 for Jython and for the Python web site.  It will surely find 
 other uses in the future.
 
-Hosting is kindly provided by `Upfront <XXX>`__ of XXX.  Martin von
-Loewis put a lot of effort into importing existing bugs and patches
-from SourceForge; his scripts for this import are at XXX.
+Hosting is kindly provided by `Upfront Systems <http://www.upfrontsystems.co.za/>`__ of Stellenbosch, South Africa.  Martin von Loewis put a
+lot of effort into importing existing bugs and patches from
+SourceForge; his scripts for this import operation are at 
+http://svn.python.org/view/tracker/importer/.
 
 .. seealso::
 
-  XXX Roundup web site.
+  http://bugs.python.org: The Python bug tracker.
 
-  bugs.python.org
+  http://bugs.jython.org: The Jython bug tracker.
 
-  bugs.jython.org
-
-  Python web site bug tracker
+  http://roundup.sourceforge.net/: Roundup downloads and documentation.
 
 
 New Documentation Format: ReStructured Text
@@ -728,6 +730,21 @@ and it also supports the ``b''`` notation.
 
 .. ======================================================================
 
+.. _pep-3116:
+
+PEP 3116: New I/O Library
+=====================================================
+
+XXX write this.
+
+.. seealso::
+
+   :pep:`3116` - New I/O
+      PEP written by Daniel Stutzbach, Mike Verdone, and Guido van Rossum.
+      XXX code written by who?
+
+.. ======================================================================
+
 .. _pep-3118:
 
 PEP 3118: Revised Buffer Protocol
@@ -895,8 +912,9 @@ one, :func:`math.trunc`, that's been backported to Python 2.6.
    :pep:`3141` - A Type Hierarchy for Numbers
       PEP written by Jeffrey Yasskin.
 
-  XXX link: Discusses Scheme's numeric tower.
+   `Scheme's numerical tower <http://www.gnu.org/software/guile/manual/html_node/Numerical-Tower.html#Numerical-Tower>`__, from the Guile manual.
 
+   `Scheme's number datatypes <http://schemers.org/Documents/Standards/R5RS/HTML/r5rs-Z-H-9.html#%_sec_6.2>`__ from the R5RS Scheme specification.
   
 
 The :mod:`fractions` Module
@@ -1229,7 +1247,7 @@ complete list of changes, or look through the CVS logs for all the details.
 * The :mod:`datetime` module's :meth:`strftime` methods now support a
   ``%f`` format code that expands to the number of microseconds in the
   object, zero-padded on
-  the left to six places.  (Contributed by XXX.)
+  the left to six places.  (Contributed by Skip Montanaro.)
 
   .. Patch 1158
 
@@ -1527,7 +1545,8 @@ complete list of changes, or look through the CVS logs for all the details.
   numbers following a triangular distribution.   The returned values
   are between *low* and *high*, not including *high* itself, and 
   with *mode* as the mode, the most frequently occurring value 
-  in the distribution.  (Contributed by Raymond Hettinger. XXX check)
+  in the distribution.  (Contributed by Wladmir van der Laan and
+  Raymond Hettinger.)
 
   .. Patch 1681432
 
@@ -1544,7 +1563,7 @@ complete list of changes, or look through the CVS logs for all the details.
   have a read-only :attr:`queue` attribute that returns the 
   contents of the scheduler's queue, represented as a list of
   named tuples with the fields ``(time, priority, action, argument)``.
-  (Contributed by Raymond Hettinger XXX check.)
+  (Contributed by Raymond Hettinger.)
 
   .. Patch 1861
 
@@ -1554,7 +1573,7 @@ complete list of changes, or look through the CVS logs for all the details.
   objects; ``pollobj.modify(fd, eventmask)`` takes a file descriptor
   or file object and an event mask, 
   
-  (Contributed by XXX.)
+  (Contributed by Christian Heimes.)
 
   .. Patch 1657
 
@@ -1571,7 +1590,7 @@ complete list of changes, or look through the CVS logs for all the details.
   :cfunc:`PySignal_SetWakeupFd`, for setting the descriptor.
 
   Event loops will use this by opening a pipe to create two descriptors,
-  one for reading and one for writing.  The writeable descriptor
+  one for reading and one for writing.  The writable descriptor
   will be passed to :func:`set_wakeup_fd`, and the readable descriptor
   will be added to the list of descriptors monitored by the event loop via
   :cfunc:`select` or :cfunc:`poll`.
@@ -1586,6 +1605,16 @@ complete list of changes, or look through the CVS logs for all the details.
   and allows changing whether signals can interrupt system calls or not.
   (Contributed by Ralf Schmitt.)
 
+  The :func:`setitimer` and :func:`getitimer` functions have also been
+  added on systems that support these system calls.  :func:`setitimer`
+  allows setting interval timers that will cause a signal to be
+  delivered to the process after a specified time, measured in
+  wall-clock time, consumed process time, or combined process+system
+  time.  (Contributed by Guilherme Polo.)
+
+  .. Patch 2240
+
+
 * The :mod:`smtplib` module now supports SMTP over SSL thanks to the
   addition of the :class:`SMTP_SSL` class. This class supports an
   interface identical to the existing :class:`SMTP` class.   Both 
diff --git a/Lib/distutils/core.py b/Lib/distutils/core.py
@@ -207,7 +207,7 @@ def run_setup (script_name, script_args=None, stop_after="run"):
     _setup_stop_after = stop_after
 
     save_argv = sys.argv
-    g = {}
+    g = {'__file__': script_name}
     l = {}
     try:
         try:
diff --git a/Lib/distutils/tests/test_core.py b/Lib/distutils/tests/test_core.py
@@ -0,0 +1,81 @@
+"""Tests for distutils.core."""
+
+import io
+import distutils.core
+import os
+import shutil
+import sys
+import test.test_support
+import unittest
+
+
+# setup script that uses __file__
+setup_using___file__ = """\
+
+__file__
+
+from distutils.core import setup
+setup()
+"""
+
+setup_prints_cwd = """\
+
+import os
+print(os.getcwd())
+
+from distutils.core import setup
+setup()
+"""
+
+
+class CoreTestCase(unittest.TestCase):
+
+    def setUp(self):
+        self.old_stdout = sys.stdout
+        self.cleanup_testfn()
+
+    def tearDown(self):
+        sys.stdout = self.old_stdout
+        self.cleanup_testfn()
+
+    def cleanup_testfn(self):
+        path = test.test_support.TESTFN
+        if os.path.isfile(path):
+            os.remove(path)
+        elif os.path.isdir(path):
+            shutil.rmtree(path)
+
+    def write_setup(self, text, path=test.test_support.TESTFN):
+        open(path, "w").write(text)
+        return path
+
+    def test_run_setup_provides_file(self):
+        # Make sure the script can use __file__; if that's missing, the test
+        # setup.py script will raise NameError.
+        distutils.core.run_setup(
+            self.write_setup(setup_using___file__))
+
+    def test_run_setup_uses_current_dir(self):
+        # This tests that the setup script is run with the current directory
+        # as it's own current directory; this was temporarily broken by a
+        # previous patch when TESTFN did not use the current directory.
+        sys.stdout = io.StringIO()
+        cwd = os.getcwd()
+
+        # Create a directory and write the setup.py file there:
+        os.mkdir(test.test_support.TESTFN)
+        setup_py = os.path.join(test.test_support.TESTFN, "setup.py")
+        distutils.core.run_setup(
+            self.write_setup(setup_prints_cwd, path=setup_py))
+
+        output = sys.stdout.getvalue()
+        if output.endswith("\n"):
+            output = output[:-1]
+        self.assertEqual(cwd, output)
+
+
+def test_suite():
+    return unittest.makeSuite(CoreTestCase)
+
+if __name__ == "__main__":
+    unittest.main(defaultTest="test_suite")
diff --git a/Lib/sqlite3/test/transactions.py b/Lib/sqlite3/test/transactions.py
@@ -112,6 +112,10 @@ def CheckToggleAutoCommit(self):
         self.failUnlessEqual(len(res), 1)
 
     def CheckRaiseTimeout(self):
+        if sqlite.sqlite_version_info < (3, 2, 2):
+            # This will fail (hang) on earlier versions of sqlite.
+            # Determine exact version it was fixed. 3.2.1 hangs.
+            return
         self.cur1.execute("create table test(i)")
         self.cur1.execute("insert into test(i) values (5)")
         try:
@@ -127,6 +131,10 @@ def CheckLocking(self):
         This tests the improved concurrency with pysqlite 2.3.4. You needed
         to roll back con2 before you could commit con1.
         """
+        if sqlite.sqlite_version_info < (3, 2, 2):
+            # This will fail (hang) on earlier versions of sqlite.
+            # Determine exact version it was fixed. 3.2.1 hangs.
+            return
         self.cur1.execute("create table test(i)")
         self.cur1.execute("insert into test(i) values (5)")
         try:
diff --git a/Lib/test/test_signal.py b/Lib/test/test_signal.py
@@ -31,8 +31,8 @@ def exit_subprocess():
 def ignoring_eintr(__func, *args, **kwargs):
     try:
         return __func(*args, **kwargs)
-    except IOError as e:
-        if e.errno != signal.EINTR:
+    except EnvironmentError as e:
+        if e.errno != errno.EINTR:
             raise
         return None
 
@@ -363,12 +363,15 @@ def test_itimer_virtual(self):
     def test_itimer_prof(self):
         self.itimer = signal.ITIMER_PROF
         signal.signal(signal.SIGPROF, self.sig_prof)
-        signal.setitimer(self.itimer, 0.2)
+        signal.setitimer(self.itimer, 0.2, 0.2)
 
         for i in range(100000000):
             if signal.getitimer(self.itimer) == (0.0, 0.0):
                 break # sig_prof handler stopped this itimer
 
+        # profiling itimer should be (0.0, 0.0) now
+        self.assertEquals(signal.getitimer(self.itimer), (0.0, 0.0))
+        # and the handler should have been called
         self.assertEqual(self.hndl_called, True)
 
 def test_main():
diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py
@@ -237,6 +237,35 @@ def waitingThread():
             """])
         self.assertEqual(rc, 42)
 
+    def test_finalize_with_trace(self):
+        # Issue1733757
+        # Avoid a deadlock when sys.settrace steps into threading._shutdown
+        import subprocess
+        rc = subprocess.call([sys.executable, "-c", """if 1:
+            import sys, threading
+
+            # A deadlock-killer, to prevent the
+            # testsuite to hang forever
+            def killer():
+                import os, time
+                time.sleep(2)
+                print('program blocked; aborting')
+                os._exit(2)
+            t = threading.Thread(target=killer)
+            t.setDaemon(True)
+            t.start()
+
+            # This is the trace function
+            def func(frame, event, arg):
+                threading.currentThread()
+                return func
+
+            sys.settrace(func)
+            """])
+        self.failIf(rc == 2, "interpreted was blocked")
+        self.failUnless(rc == 0, "Unexpected error")
+
+
     def test_enumerate_after_join(self):
         # Try hard to trigger #1703448: a thread is still returned in
         # threading.enumerate() after it has been join()ed.
diff --git a/Lib/threading.py b/Lib/threading.py
@@ -577,15 +577,16 @@ def _delete(self):
         # since it isn't if dummy_threading is *not* being used then don't
         # hide the exception.
 
-        _active_limbo_lock.acquire()
         try:
-            try:
+            with _active_limbo_lock:
                 del _active[_get_ident()]
-            except KeyError:
-                if 'dummy_threading' not in _sys.modules:
-                    raise
-        finally:
-            _active_limbo_lock.release()
+                # There must not be any python code between the previous line
+                # and after the lock is released.  Otherwise a tracing function
+                # could try to acquire the lock again in the same thread, (in
+                # currentThread()), and would block.
+        except KeyError:
+            if 'dummy_threading' not in _sys.modules:
+                raise
 
     def join(self, timeout=None):
         if not self._initialized:
diff --git a/Tools/buildbot/buildmsi.bat b/Tools/buildbot/buildmsi.bat
@@ -3,9 +3,6 @@
 cmd /c Tools\buildbot\external.bat
 @rem build release versions of things
 call "%VS90COMNTOOLS%vsvars32.bat"
-if not exist ..\db-4.4.20\build_win32\release\libdb44s.lib (
-  vcbuild db-4.4.20\build_win32\Berkeley_DB.sln /build Release /project db_static
-)
 
 @rem build Python
 vcbuild /useenv PCbuild\pcbuild.sln "Release|Win32"
