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Merged revisions 76432,76558 via svnmerge from

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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.
........
This commit is contained in:
Mark Dickinson 2009-11-28 12:48:43 +00:00
parent a4962cb694
commit a614f042a2
6 changed files with 128 additions and 5 deletions
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5
Modules/_multiprocessing/multiprocessing.c
View file

@ -263,7 +263,8 @@ PyInit__multiprocessing(void)
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 @@ PyInit__multiprocessing(void)
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

2
Modules/_multiprocessing/multiprocessing.h
View file

@ -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

86
configure vendored
View file

@ -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 @@ fi
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; }

34
configure.in
View file

@ -3290,6 +3290,40 @@ AC_CHECK_DECLS([isinf, isnan, isfinite], [], [], [[#include <math.h>]])
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,

3
pyconfig.h.in
View file

@ -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

3
setup.py
View file

@ -1183,7 +1183,8 @@ class db_found(Exception): pass
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'):