Merged revisions 76432,76558 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r76432 | mark.dickinson | 2009-11-20 19:30:22 +0000 (Fri, 20 Nov 2009) | 5 lines
Issue #7272: Add configure test to detect whether sem_open works
properly, and use this to skip test_multiprocessing on platforms
where sem_open raises a signal. This should fix some FreeBSD buildbot
failures for test_multiprocessing.
........
r76558 | mark.dickinson | 2009-11-28 10:44:20 +0000 (Sat, 28 Nov 2009) | 4 lines
Issue #7272, continued: don't re-use existing HAVE_BROKEN_POSIX_SEMAPHORES
to indicate that semaphores aren't available; define a new variable
POSIX_SEMAPHORES_NOT_ENABLED instead.
........
diff --git a/Modules/_multiprocessing/multiprocessing.c b/Modules/_multiprocessing/multiprocessing.c
index afa2599..b09fb25 100644
--- a/Modules/_multiprocessing/multiprocessing.c
+++ b/Modules/_multiprocessing/multiprocessing.c
@@ -263,7 +263,8 @@
Py_INCREF(&ConnectionType);
PyModule_AddObject(module, "Connection", (PyObject*)&ConnectionType);
-#if defined(MS_WINDOWS) || defined(HAVE_SEM_OPEN)
+#if defined(MS_WINDOWS) || \
+ (defined(HAVE_SEM_OPEN) && !defined(POSIX_SEMAPHORES_NOT_ENABLED))
/* Add SemLock type to module */
if (PyType_Ready(&SemLockType) < 0)
return NULL;
@@ -311,7 +312,7 @@
Py_DECREF(temp); Py_DECREF(value); return NULL; } \
Py_DECREF(value)
-#ifdef HAVE_SEM_OPEN
+#if defined(HAVE_SEM_OPEN) && !defined(POSIX_SEMAPHORES_NOT_ENABLED)
ADD_FLAG(HAVE_SEM_OPEN);
#endif
#ifdef HAVE_SEM_TIMEDWAIT
diff --git a/Modules/_multiprocessing/multiprocessing.h b/Modules/_multiprocessing/multiprocessing.h
index 7a79d6e..3dd0199 100644
--- a/Modules/_multiprocessing/multiprocessing.h
+++ b/Modules/_multiprocessing/multiprocessing.h
@@ -27,7 +27,7 @@
# include <sys/socket.h>
# include <sys/uio.h>
# include <arpa/inet.h> /* htonl() and ntohl() */
-# ifdef HAVE_SEM_OPEN
+# if defined(HAVE_SEM_OPEN) && !defined(POSIX_SEMAPHORES_NOT_ENABLED)
# include <semaphore.h>
typedef sem_t *SEM_HANDLE;
# endif
diff --git a/configure b/configure
index 69ad375..a7dfabb 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
#! /bin/sh
-# From configure.in Revision: 76405 .
+# From configure.in Revision: 76552 .
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.61 for python 3.2.
#
@@ -23587,6 +23587,90 @@
LIBS=$LIBS_SAVE
+# For multiprocessing module, check that sem_open
+# actually works. For FreeBSD versions <= 7.2,
+# the kernel module that provides POSIX semaphores
+# isn't loaded by default, so an attempt to call
+# sem_open results in a 'Signal 12' error.
+{ echo "$as_me:$LINENO: checking whether POSIX semaphores are enabled" >&5
+echo $ECHO_N "checking whether POSIX semaphores are enabled... $ECHO_C" >&6; }
+if test "${ac_cv_posix_semaphores_enabled+set}" = set; then
+ echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+ if test "$cross_compiling" = yes; then
+ ac_cv_posix_semaphores_enabled=yes
+else
+ cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <semaphore.h>
+#include <sys/stat.h>
+
+int main(void) {
+ sem_t *a = sem_open("/autoconf", O_CREAT, S_IRUSR|S_IWUSR, 0);
+ if (a == SEM_FAILED) {
+ perror("sem_open");
+ return 1;
+ }
+ sem_close(a);
+ return 0;
+}
+
+_ACEOF
+rm -f conftest$ac_exeext
+if { (ac_try="$ac_link"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+ (eval "$ac_link") 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+ { (case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+ (eval "$ac_try") 2>&5
+ ac_status=$?
+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); }; }; then
+ ac_cv_posix_semaphores_enabled=yes
+else
+ echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+ac_cv_posix_semaphores_enabled=no
+fi
+rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+
+
+
+fi
+
+{ echo "$as_me:$LINENO: result: $ac_cv_posix_semaphores_enabled" >&5
+echo "${ECHO_T}$ac_cv_posix_semaphores_enabled" >&6; }
+if test $ac_cv_posix_semaphores_enabled = no
+then
+
+cat >>confdefs.h <<\_ACEOF
+#define POSIX_SEMAPHORES_NOT_ENABLED 1
+_ACEOF
+
+fi
+
# Multiprocessing check for broken sem_getvalue
{ echo "$as_me:$LINENO: checking for broken sem_getvalue" >&5
echo $ECHO_N "checking for broken sem_getvalue... $ECHO_C" >&6; }
diff --git a/configure.in b/configure.in
index ca9037b..f9840d4 100644
--- a/configure.in
+++ b/configure.in
@@ -3290,6 +3290,40 @@
LIBS=$LIBS_SAVE
+# For multiprocessing module, check that sem_open
+# actually works. For FreeBSD versions <= 7.2,
+# the kernel module that provides POSIX semaphores
+# isn't loaded by default, so an attempt to call
+# sem_open results in a 'Signal 12' error.
+AC_MSG_CHECKING(whether POSIX semaphores are enabled)
+AC_CACHE_VAL(ac_cv_posix_semaphores_enabled,
+AC_TRY_RUN([
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <semaphore.h>
+#include <sys/stat.h>
+
+int main(void) {
+ sem_t *a = sem_open("/autoconf", O_CREAT, S_IRUSR|S_IWUSR, 0);
+ if (a == SEM_FAILED) {
+ perror("sem_open");
+ return 1;
+ }
+ sem_close(a);
+ return 0;
+}
+], ac_cv_posix_semaphores_enabled=yes,
+ ac_cv_posix_semaphores_enabled=no,
+ ac_cv_posix_semaphores_enabled=yes)
+)
+AC_MSG_RESULT($ac_cv_posix_semaphores_enabled)
+if test $ac_cv_posix_semaphores_enabled = no
+then
+ AC_DEFINE(POSIX_SEMAPHORES_NOT_ENABLED, 1,
+ [Define if POSIX semaphores aren't enabled on your system])
+fi
+
# Multiprocessing check for broken sem_getvalue
AC_MSG_CHECKING(for broken sem_getvalue)
AC_CACHE_VAL(ac_cv_broken_sem_getvalue,
diff --git a/pyconfig.h.in b/pyconfig.h.in
index b8404f3..e9c930c 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -916,6 +916,9 @@
/* Define to the version of this package. */
#undef PACKAGE_VERSION
+/* Define if POSIX semaphores aren't enabled on your system */
+#undef POSIX_SEMAPHORES_NOT_ENABLED
+
/* Defined if PTHREAD_SCOPE_SYSTEM supported. */
#undef PTHREAD_SYSTEM_SCHED_SUPPORTED
diff --git a/setup.py b/setup.py
index 03f9faa..43b6a6a 100644
--- a/setup.py
+++ b/setup.py
@@ -1183,7 +1183,8 @@
multiprocessing_srcs = [ '_multiprocessing/multiprocessing.c',
'_multiprocessing/socket_connection.c'
]
- if sysconfig.get_config_var('HAVE_SEM_OPEN'):
+ if (sysconfig.get_config_var('HAVE_SEM_OPEN') and not
+ sysconfig.get_config_var('POSIX_SEMAPHORES_NOT_ENABLED')):
multiprocessing_srcs.append('_multiprocessing/semaphore.c')
if sysconfig.get_config_var('WITH_THREAD'):