From 821ab8636fb88a18ceca173ea27e6772848af23f Mon Sep 17 00:00:00 2001
From: Alexandre Julliard <julliard@winehq.org>
Date: Wed, 12 Nov 2003 22:44:56 +0000
Subject: [PATCH] Added configure check for pthread_getattr_np.

---
 configure           | 88 +++++++++++++++++++++++++++++++++++++++++++++
 configure.ac        |  6 ++++
 include/config.h.in |  3 ++
 loader/pthread.c    |  8 +++++
 4 files changed, 105 insertions(+)

diff --git a/configure b/configure
index e2fcaaf883..2032548b0b 100755
--- a/configure
+++ b/configure
@@ -9871,6 +9871,94 @@ _ACEOF
 fi
 
 
+ac_save_LIBS="$LIBS"
+LIBS="$LIBS $LIBPTHREAD"
+
+for ac_func in pthread_getattr_np
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+#line $LINENO "configure"
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+         { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+LIBS="$ac_save_LIBS"
+
 
 
 
diff --git a/configure.ac b/configure.ac
index 5d37e8e450..3be5d362dd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -535,6 +535,12 @@ dnl **** Check for pthread_rwlock_t ****
 AC_CHECK_TYPES([pthread_rwlock_t, pthread_rwlockattr_t],,,[#define _GNU_SOURCE
 #include <pthread.h>])
 
+dnl **** Check for pthread_getattr_np ****
+ac_save_LIBS="$LIBS"
+LIBS="$LIBS $LIBPTHREAD"
+AC_CHECK_FUNCS(pthread_getattr_np)
+LIBS="$ac_save_LIBS"
+
 dnl **** Check for Open Sound System ****
 AC_CHECK_HEADERS(sys/soundcard.h machine/soundcard.h soundcard.h, break)
 
diff --git a/include/config.h.in b/include/config.h.in
index b2e24c4ba4..343466c50f 100644
--- a/include/config.h.in
+++ b/include/config.h.in
@@ -410,6 +410,9 @@
 /* Define to 1 if you have the <process.h> header file. */
 #undef HAVE_PROCESS_H
 
+/* Define to 1 if you have the `pthread_getattr_np' function. */
+#undef HAVE_PTHREAD_GETATTR_NP
+
 /* Define to 1 if you have the <pthread.h> header file. */
 #undef HAVE_PTHREAD_H
 
diff --git a/loader/pthread.c b/loader/pthread.c
index 94cc089a0f..835786d2c5 100644
--- a/loader/pthread.c
+++ b/loader/pthread.c
@@ -79,9 +79,17 @@ void wine_pthread_init_thread( struct wine_pthread_thread_info *info )
     /* retrieve the stack info (except for main thread) */
     if (funcs.ptr_set_thread_data)
     {
+#ifdef HAVE_PTHREAD_GETATTR_NP
         pthread_attr_t attr;
         pthread_getattr_np( pthread_self(), &attr );
         pthread_attr_getstack( &attr, &info->stack_base, &info->stack_size );
+#else
+        /* assume that the stack allocation is page aligned */
+        char dummy;
+        size_t page_mask = getpagesize() - 1;
+        char *stack_top = (char *)((unsigned long)(&dummy + page_mask) & ~page_mask);
+        info->stack_base = stack_top - info->stack_size;
+#endif
     }
 
     /* set pid and tid */