Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/debugger/ThreadContext.java @ 17716:cdb71841f4bc
6498581: ThreadInterruptTest3 produces wrong output on Windows
Summary: There is race condition between os::interrupt and os::is_interrupted on Windows. In JVM_Sleep(Thread.sleep), check if thread gets interrupted, it may see interrupted but not really interrupted so cause spurious waking up (early return from sleep). Fix by checking if interrupt event really gets set thus prevent false return. For intrinsic of _isInterrupted, on Windows, go fastpath only on bit not set.
Reviewed-by: acorn, kvn
Contributed-by: david.holmes@oracle.com, yumin.qi@oracle.com
author | minqi |
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date | Wed, 26 Feb 2014 15:20:41 -0800 |
parents | fac3dd92ebaf |
children |
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/* * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ package sun.jvm.hotspot.debugger; import sun.jvm.hotspot.debugger.cdbg.*; /** This is a placeholder interface for a thread's context, containing only integer registers (no floating-point ones). What it contains is platform-dependent. Not all registers are guaranteed to be present in the context or read from the target process in all situations. However, the routines in it are exposed to allow platform-independent iteration. */ public interface ThreadContext { /** Number of integer registers in the context */ public int getNumRegisters(); /** Get the name of the specified register (0..getNumRegisters() - 1) */ public String getRegisterName(int i); /** Get the value of the specified register (0..getNumRegisters() - 1) */ public long getRegister(int index); /** Set the value of the specified register (0..getNumRegisters() - 1) */ public void setRegister(int index, long value); /** Get the value of the specified register (0..getNumRegisters() - 1) as an Address */ public Address getRegisterAsAddress(int index); /** Set the value of the specified register (0..getNumRegisters() - 1) as an Address */ public void setRegisterAsAddress(int index, Address value); public CFrame getTopFrame(Debugger dbg); }