1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/os/windows/vm/interfaceSupport_windows.hpp Wed Apr 27 01:25:04 2016 +0800
1.3 @@ -0,0 +1,46 @@
1.4 +/*
1.5 + * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +#ifndef OS_WINDOWS_VM_INTERFACESUPPORT_WINDOWS_HPP
1.29 +#define OS_WINDOWS_VM_INTERFACESUPPORT_WINDOWS_HPP
1.30 +
1.31 +// Contains inlined functions for class InterfaceSupport
1.32 +
1.33 +static inline void serialize_memory(JavaThread *thread) {
1.34 + // due to chained nature of SEH handlers we have to be sure
1.35 + // that our handler is always last handler before an attempt to write
1.36 + // into serialization page - it can fault if we access this page
1.37 + // right in the middle of protect/unprotect sequence by remote
1.38 + // membar logic.
1.39 + // __try/__except are very lightweight operations (only several
1.40 + // instructions not affecting control flow directly on x86)
1.41 + // so we can use it here, on very time critical path
1.42 + __try {
1.43 + os::write_memory_serialize_page(thread);
1.44 + } __except (os::win32::
1.45 + serialize_fault_filter((_EXCEPTION_POINTERS*)_exception_info()))
1.46 + {}
1.47 +}
1.48 +
1.49 +#endif // OS_WINDOWS_VM_INTERFACESUPPORT_WINDOWS_HPP
