Patch 775605: Cygwin pthread_sigmask() workaround patch
Cygwin's pthread_sigmask() implementation appears to be buggy. This
patch works around this problem by using sigprocmask() instead.
This patch is implemented in a general way so it could be used by other
platforms too. If this approach is deemed too risky, then I can work up
a patch that just hacks Python/thread_pthread.h for Cygwin.
Note that I tested this patch against 2.3c1 under Red Hat Linux 8.0 too.
[snip]
And finally, I need someone to regenerate pyconfig.h.in and configure
with the same versions of the autotools that are normally used by
Python.
Neal kindly regenerated pyconfig.h.in and configure for me.
diff --git a/Python/thread_pthread.h b/Python/thread_pthread.h
index 2e594fe..0f7ad20 100644
--- a/Python/thread_pthread.h
+++ b/Python/thread_pthread.h
@@ -116,7 +116,7 @@
* other UNIX International compliant systems that don't have the full
* pthread implementation.
*/
-#ifdef HAVE_PTHREAD_SIGMASK
+#if defined(HAVE_PTHREAD_SIGMASK) && !defined(HAVE_BROKEN_PTHREAD_SIGMASK)
# define SET_THREAD_SIGMASK pthread_sigmask
#else
# define SET_THREAD_SIGMASK sigprocmask
diff --git a/configure b/configure
index a132a9e..d067edd 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
#! /bin/sh
-# From configure.in Revision: 1.424 .
+# From configure.in Revision: 1.425 .
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.53 for python 2.3.
#
@@ -908,7 +908,7 @@
# Don't blindly perform a `cd "$ac_dir"/$ac_foo && pwd` since $ac_foo can be
# absolute.
ac_abs_builddir=`cd "$ac_dir" && cd $ac_builddir && pwd`
-ac_abs_top_builddir=`cd "$ac_dir" && cd ${ac_top_builddir}. && pwd`
+ac_abs_top_builddir=`cd "$ac_dir" && cd $ac_top_builddir && pwd`
ac_abs_srcdir=`cd "$ac_dir" && cd $ac_srcdir && pwd`
ac_abs_top_srcdir=`cd "$ac_dir" && cd $ac_top_srcdir && pwd`
@@ -11785,7 +11785,15 @@
cat >>confdefs.h <<_ACEOF
#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
_ACEOF
+ case $ac_sys_system in
+ CYGWIN*)
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_BROKEN_PTHREAD_SIGMASK 1
+_ACEOF
+
+ ;;
+ esac
fi
done
@@ -18502,7 +18510,7 @@
# Don't blindly perform a `cd "$ac_dir"/$ac_foo && pwd` since $ac_foo can be
# absolute.
ac_abs_builddir=`cd "$ac_dir" && cd $ac_builddir && pwd`
-ac_abs_top_builddir=`cd "$ac_dir" && cd ${ac_top_builddir}. && pwd`
+ac_abs_top_builddir=`cd "$ac_dir" && cd $ac_top_builddir && pwd`
ac_abs_srcdir=`cd "$ac_dir" && cd $ac_srcdir && pwd`
ac_abs_top_srcdir=`cd "$ac_dir" && cd $ac_top_srcdir && pwd`
diff --git a/configure.in b/configure.in
index 16a1642..a15a023 100644
--- a/configure.in
+++ b/configure.in
@@ -1701,7 +1701,13 @@
if test "$ac_cv_pthread_system_supported" = "yes"; then
AC_DEFINE(PTHREAD_SYSTEM_SCHED_SUPPORTED, 1, [Defined if PTHREAD_SCOPE_SYSTEM supported.])
fi
- AC_CHECK_FUNCS(pthread_sigmask)
+ AC_CHECK_FUNCS(pthread_sigmask,
+ [case $ac_sys_system in
+ CYGWIN*)
+ AC_DEFINE(HAVE_BROKEN_PTHREAD_SIGMASK, 1,
+ [Define if pthread_sigmask() does not work on your system.])
+ ;;
+ esac])
fi
diff --git a/pyconfig.h.in b/pyconfig.h.in
index 0a58278..dacd304 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -47,6 +47,9 @@
/* Define if the Posix semaphores do not work on your system */
#undef HAVE_BROKEN_POSIX_SEMAPHORES
+/* Define if pthread_sigmask() does not work on your system. */
+#undef HAVE_BROKEN_PTHREAD_SIGMASK
+
/* Define to 1 if you have the `chown' function. */
#undef HAVE_CHOWN
@@ -829,9 +832,6 @@
/* Define on NetBSD to activate all library features */
#undef _NETBSD_SOURCE
-/* Define on FreeBSD to activate all library features */
-#undef __BSD_VISIBLE
-
/* Define _OSF_SOURCE to get the makedev macro. */
#undef _OSF_SOURCE
@@ -857,6 +857,9 @@
/* Define to activate Unix95-and-earlier features */
#undef _XOPEN_SOURCE_EXTENDED
+/* Define on FreeBSD to activate all library features */
+#undef __BSD_VISIBLE
+
/* Define to 1 if type `char' is unsigned and you are not using gcc. */
#ifndef __CHAR_UNSIGNED__
# undef __CHAR_UNSIGNED__