src/os/windows/vm/interfaceSupport_windows.hpp

Wed, 27 Apr 2016 01:25:04 +0800

author
aoqi
date
Wed, 27 Apr 2016 01:25:04 +0800
changeset 0
f90c822e73f8
child 6876
710a3c8b516e
permissions
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http://hg.openjdk.java.net/jdk8u/jdk8u/hotspot/
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tag: jdk8u25-b17

aoqi@0 1 /*
aoqi@0 2 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
aoqi@0 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0 4 *
aoqi@0 5 * This code is free software; you can redistribute it and/or modify it
aoqi@0 6 * under the terms of the GNU General Public License version 2 only, as
aoqi@0 7 * published by the Free Software Foundation.
aoqi@0 8 *
aoqi@0 9 * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0 12 * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0 13 * accompanied this code).
aoqi@0 14 *
aoqi@0 15 * You should have received a copy of the GNU General Public License version
aoqi@0 16 * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0 18 *
aoqi@0 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0 20 * or visit www.oracle.com if you need additional information or have any
aoqi@0 21 * questions.
aoqi@0 22 *
aoqi@0 23 */
aoqi@0 24
aoqi@0 25 #ifndef OS_WINDOWS_VM_INTERFACESUPPORT_WINDOWS_HPP
aoqi@0 26 #define OS_WINDOWS_VM_INTERFACESUPPORT_WINDOWS_HPP
aoqi@0 27
aoqi@0 28 // Contains inlined functions for class InterfaceSupport
aoqi@0 29
aoqi@0 30 static inline void serialize_memory(JavaThread *thread) {
aoqi@0 31 // due to chained nature of SEH handlers we have to be sure
aoqi@0 32 // that our handler is always last handler before an attempt to write
aoqi@0 33 // into serialization page - it can fault if we access this page
aoqi@0 34 // right in the middle of protect/unprotect sequence by remote
aoqi@0 35 // membar logic.
aoqi@0 36 // __try/__except are very lightweight operations (only several
aoqi@0 37 // instructions not affecting control flow directly on x86)
aoqi@0 38 // so we can use it here, on very time critical path
aoqi@0 39 __try {
aoqi@0 40 os::write_memory_serialize_page(thread);
aoqi@0 41 } __except (os::win32::
aoqi@0 42 serialize_fault_filter((_EXCEPTION_POINTERS*)_exception_info()))
aoqi@0 43 {}
aoqi@0 44 }
aoqi@0 45
aoqi@0 46 #endif // OS_WINDOWS_VM_INTERFACESUPPORT_WINDOWS_HPP

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