From 95c16629d3549e7306d297ed09e26e58b151f720 Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Tue, 27 Dec 2011 15:36:32 -0600
Subject: [PATCH] fix for old kernels which don't have epoll_create1

---
 Modules/selectmodule.c | 12 +++++++++---
 configure              | 29 +++++++++++++++++++++++++++--
 configure.in           |  6 ++++++
 pyconfig.h.in          |  3 +++
 4 files changed, 45 insertions(+), 5 deletions(-)

diff --git a/Modules/selectmodule.c b/Modules/selectmodule.c
index 6e3e6cbf1d5..a8413fede5c 100644
--- a/Modules/selectmodule.c
+++ b/Modules/selectmodule.c
@@ -1087,7 +1087,7 @@ pyepoll_internal_close(pyEpoll_Object *self)
 }
 
 static PyObject *
-newPyEpoll_Object(PyTypeObject *type, int flags, SOCKET fd)
+newPyEpoll_Object(PyTypeObject *type, int sizehint, int flags, SOCKET fd)
 {
     pyEpoll_Object *self;
 
@@ -1098,7 +1098,11 @@ newPyEpoll_Object(PyTypeObject *type, int flags, SOCKET fd)
 
     if (fd == -1) {
         Py_BEGIN_ALLOW_THREADS
+#ifdef HAVE_EPOLL_CREATE1
         self->epfd = epoll_create1(flags);
+#else
+        self->epfd = epoll_create(sizehint);
+#endif
         Py_END_ALLOW_THREADS
     }
     else {
@@ -1127,7 +1131,7 @@ pyepoll_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
         return NULL;
     }
 
-    return newPyEpoll_Object(type, flags, -1);
+    return newPyEpoll_Object(type, sizehint, flags, -1);
 }
 
 
@@ -1185,7 +1189,7 @@ pyepoll_fromfd(PyObject *cls, PyObject *args)
     if (!PyArg_ParseTuple(args, "i:fromfd", &fd))
         return NULL;
 
-    return newPyEpoll_Object((PyTypeObject*)cls, 0, fd);
+    return newPyEpoll_Object((PyTypeObject*)cls, FD_SETSIZE - 1, 0, fd);
 }
 
 PyDoc_STRVAR(pyepoll_fromfd_doc,
@@ -2213,7 +2217,9 @@ PyInit_select(void)
     PyModule_AddIntConstant(m, "EPOLLWRBAND", EPOLLWRBAND);
     PyModule_AddIntConstant(m, "EPOLLMSG", EPOLLMSG);
 
+#ifdef EPOLL_CLOEXEC
     PyModule_AddIntConstant(m, "EPOLL_CLOEXEC", EPOLL_CLOEXEC);
+#endif
 #endif /* HAVE_EPOLL */
 
 #ifdef HAVE_KQUEUE
diff --git a/configure b/configure
index 455e62a87f3..7cd7e918732 100755
--- a/configure
+++ b/configure
@@ -9604,6 +9604,31 @@ else
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
 
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for epoll_create1" >&5
+$as_echo_n "checking for epoll_create1... " >&6; }
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+#include <sys/epoll.h>
+int
+main ()
+{
+void *x=epoll_create1
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+
+$as_echo "#define HAVE_EPOLL_CREATE1 1" >>confdefs.h
+
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for kqueue" >&5
@@ -14564,8 +14589,8 @@ esac
 
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 # Files that config.status was made for.
-config_files="`echo $ac_config_files`"
-config_headers="`echo $ac_config_headers`"
+config_files="$ac_config_files"
+config_headers="$ac_config_headers"
 
 _ACEOF
 
diff --git a/configure.in b/configure.in
index 95fb8c5dddc..b7eccb71361 100644
--- a/configure.in
+++ b/configure.in
@@ -2628,6 +2628,12 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/epoll.h>]], [[void *x=epoll_c
    AC_MSG_RESULT(yes)],
   [AC_MSG_RESULT(no)
 ])
+AC_MSG_CHECKING(for epoll_create1)
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/epoll.h>]], [[void *x=epoll_create1]])],
+  [AC_DEFINE(HAVE_EPOLL_CREATE1, 1, Define if you have the 'epoll_create1' function.)
+   AC_MSG_RESULT(yes)],
+  [AC_MSG_RESULT(no)
+])
 AC_MSG_CHECKING(for kqueue)
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 #include <sys/types.h>
diff --git a/pyconfig.h.in b/pyconfig.h.in
index 6b497217d6c..accc8938b06 100644
--- a/pyconfig.h.in
+++ b/pyconfig.h.in
@@ -196,6 +196,9 @@
 /* Define if you have the 'epoll' functions. */
 #undef HAVE_EPOLL
 
+/* Define if you have the 'epoll_create1' function. */
+#undef HAVE_EPOLL_CREATE1
+
 /* Define to 1 if you have the `erf' function. */
 #undef HAVE_ERF