* cygthread.cc (cygthread::terminate_thread): Only try to free

thread stack on systems not freeing it by themselves.
	* wincap.h (wincaps::terminate_thread_frees_stack): New element.
	* wincap.cc: Implement above element throughout.

winsup/cygwin/ChangeLog

@@ -1,3 +1,10 @@
+2013-03-29  Corinna Vinschen  <corinna@vinschen.de>
+
+	* cygthread.cc (cygthread::terminate_thread): Only try to free
+	thread stack on systems not freeing it by themselves.
+	* wincap.h (wincaps::terminate_thread_frees_stack): New element.
+	* wincap.cc: Implement above element throughout.
+
 2013-03-29  Christopher Faylor  <me.cygwin2013@cgf.cx>
 
 	* pinfo.h (pinfo::status_exit): Rename from former static function in

winsup/cygwin/cygthread.cc

@@ -1,7 +1,7 @@
 /* cygthread.cc
 
    Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2008, 2009,
-   2010, 2011, 2012 Red Hat, Inc.
+   2010, 2011, 2012, 2013 Red Hat, Inc.
 
 This software is a copyrighted work licensed under the terms of the
 Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
@@ -313,6 +313,8 @@ cygthread::terminate_thread ()
   if (ev && !(terminated = !IsEventSignalled (ev)))
     ResetEvent (ev);
 
+  if (!wincap.terminate_thread_frees_stack ())
+    {
       MEMORY_BASIC_INFORMATION m;
       memset (&m, 0, sizeof (m));
       VirtualQuery (stack_ptr, &m, sizeof m);
@@ -322,6 +324,7 @@ cygthread::terminate_thread ()
       else if (!VirtualFree (m.AllocationBase, 0, MEM_RELEASE))
 	debug_printf ("VirtualFree of allocation base %p<%p> failed, %E",
 		       stack_ptr, m.AllocationBase);
+    }
 
   if (is_freerange)
     free (this);

winsup/cygwin/wincap.cc

@@ -2,7 +2,7 @@
 		capability class to the appropriate values.
 
    Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,
-   2012 Red Hat, Inc.
+   2012, 2013 Red Hat, Inc.
 
 This file is part of Cygwin.
 
@@ -56,6 +56,7 @@ wincaps wincap_2000 __attribute__((section (".cygwin_dll_common"), shared)) = {
   wow64_has_secondary_stack:false,
   has_program_compatibility_assistant:false,
   kernel_is_always_casesensitive:true,
+  terminate_thread_frees_stack:false,
 };
 
 wincaps wincap_2000sp4 __attribute__((section (".cygwin_dll_common"), shared)) = {
@@ -91,6 +92,7 @@ wincaps wincap_2000sp4 __attribute__((section (".cygwin_dll_common"), shared)) =
   wow64_has_secondary_stack:false,
   has_program_compatibility_assistant:false,
   kernel_is_always_casesensitive:true,
+  terminate_thread_frees_stack:false,
 };
 
 wincaps wincap_xp __attribute__((section (".cygwin_dll_common"), shared)) = {
@@ -126,6 +128,7 @@ wincaps wincap_xp __attribute__((section (".cygwin_dll_common"), shared)) = {
   wow64_has_secondary_stack:false,
   has_program_compatibility_assistant:false,
   kernel_is_always_casesensitive:false,
+  terminate_thread_frees_stack:false,
 };
 
 wincaps wincap_xpsp1 __attribute__((section (".cygwin_dll_common"), shared)) = {
@@ -161,6 +164,7 @@ wincaps wincap_xpsp1 __attribute__((section (".cygwin_dll_common"), shared)) = {
   wow64_has_secondary_stack:false,
   has_program_compatibility_assistant:false,
   kernel_is_always_casesensitive:false,
+  terminate_thread_frees_stack:false,
 };
 
 wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
@@ -196,6 +200,7 @@ wincaps wincap_xpsp2 __attribute__((section (".cygwin_dll_common"), shared)) = {
   wow64_has_secondary_stack:false,
   has_program_compatibility_assistant:false,
   kernel_is_always_casesensitive:false,
+  terminate_thread_frees_stack:false,
 };
 
 wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
@@ -231,6 +236,7 @@ wincaps wincap_2003 __attribute__((section (".cygwin_dll_common"), shared)) = {
   wow64_has_secondary_stack:true,
   has_program_compatibility_assistant:false,
   kernel_is_always_casesensitive:false,
+  terminate_thread_frees_stack:false,
 };
 
 wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
@@ -266,6 +272,7 @@ wincaps wincap_vista __attribute__((section (".cygwin_dll_common"), shared)) = {
   wow64_has_secondary_stack:false,
   has_program_compatibility_assistant:true,
   kernel_is_always_casesensitive:false,
+  terminate_thread_frees_stack:true,
 };
 
 wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
@@ -301,6 +308,7 @@ wincaps wincap_7 __attribute__((section (".cygwin_dll_common"), shared)) = {
   wow64_has_secondary_stack:false,
   has_program_compatibility_assistant:true,
   kernel_is_always_casesensitive:false,
+  terminate_thread_frees_stack:true,
 };
 
 wincaps wincap_8 __attribute__((section (".cygwin_dll_common"), shared)) = {
@@ -336,6 +344,7 @@ wincaps wincap_8 __attribute__((section (".cygwin_dll_common"), shared)) = {
   wow64_has_secondary_stack:false,
   has_program_compatibility_assistant:true,
   kernel_is_always_casesensitive:false,
+  terminate_thread_frees_stack:true,
 };
 
 wincapc wincap __attribute__((section (".cygwin_dll_common"), shared));

winsup/cygwin/wincap.h

@@ -1,7 +1,7 @@
 /* wincap.h: Header for OS capability class.
 
    Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,
-   2012 Red Hat, Inc.
+   2012, 2013 Red Hat, Inc.
 
 This file is part of Cygwin.
 
@@ -46,6 +46,7 @@ struct wincaps
   unsigned wow64_has_secondary_stack			: 1;
   unsigned has_program_compatibility_assistant		: 1;
   unsigned kernel_is_always_casesensitive		: 1;
+  unsigned terminate_thread_frees_stack			: 1;
 };
 
 class wincapc
@@ -100,6 +101,7 @@ public:
   bool	IMPLEMENT (wow64_has_secondary_stack)
   bool	IMPLEMENT (has_program_compatibility_assistant)
   bool	IMPLEMENT (kernel_is_always_casesensitive)
+  bool	IMPLEMENT (terminate_thread_frees_stack)
 
 #undef IMPLEMENT
 };