view agent/src/share/classes/sun/jvm/hotspot/interpreter/BytecodeInvoke.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
date Wed, 26 Feb 2014 15:20:41 -0800
parents da91efe96a93
children
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/*
 * Copyright (c) 2001, 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.interpreter;

import sun.jvm.hotspot.oops.*;
import sun.jvm.hotspot.runtime.*;
import sun.jvm.hotspot.utilities.*;

public class BytecodeInvoke extends BytecodeWithCPIndex {
  BytecodeInvoke(Method method, int bci) {
    super(method, bci);
  }

  public static BytecodeInvoke at(Method method, int bci) {
    BytecodeInvoke b = new BytecodeInvoke(method, bci);
    if (Assert.ASSERTS_ENABLED) {
      b.verify();
    }
    return b;
  }

  /** Like at, but returns null if the BCI is not at an invoke */
  public static BytecodeInvoke atCheck(Method method, int bci) {
    BytecodeInvoke b = new BytecodeInvoke(method, bci);
    return (b.isValid() ? b : null);
  }

  public static BytecodeInvoke at(BytecodeStream bcs) {
    return new BytecodeInvoke(bcs.method(), bcs.bci());
  }

  // returns the name of the invoked method
  public Symbol name() {
    ConstantPool cp = method().getConstants();
    if (isInvokedynamic()) {
      return cp.uncachedGetNameRefAt(indexForFieldOrMethod());
    }
    return cp.getNameRefAt(index());
  }

  // returns the signature of the invoked method
  public Symbol signature() {
    ConstantPool cp = method().getConstants();
    if (isInvokedynamic()) {
      return cp.uncachedGetSignatureRefAt(indexForFieldOrMethod());
    }
    return cp.getSignatureRefAt(index());
  }

  public Method getInvokedMethod() {
    return method().getConstants().getMethodRefAt(index());
  }

  // returns the result type (see BasicType.java) of the invoke
  public int resultType() {
    ResultTypeFinder rts = new ResultTypeFinder(signature());
    rts.iterate();
    return rts.type();
  }

  public int adjustedInvokeCode() {
    return javaCode();
  }

  // "specified" method   (from constant pool)
  // FIXME: elided for now
  // public Method staticTarget();

  // Testers
  public boolean isInvokeinterface() { return adjustedInvokeCode() == Bytecodes._invokeinterface; }
  public boolean isInvokevirtual()   { return adjustedInvokeCode() == Bytecodes._invokevirtual;   }
  public boolean isInvokestatic()    { return adjustedInvokeCode() == Bytecodes._invokestatic;    }
  public boolean isInvokespecial()   { return adjustedInvokeCode() == Bytecodes._invokespecial;   }
  public boolean isInvokedynamic()   { return adjustedInvokeCode() == Bytecodes._invokedynamic; }

  public boolean isValid()           { return isInvokeinterface() ||
                                              isInvokevirtual()   ||
                                              isInvokestatic()    ||
                                              isInvokespecial(); }
  public void verify() {
    if (Assert.ASSERTS_ENABLED) {
      Assert.that(isValid(), "check invoke");
    }
  }

  public String toString() {
    StringBuffer buf = new StringBuffer();
    buf.append(getJavaBytecodeName());
    buf.append(spaces);
    buf.append('#');
    buf.append(Integer.toString(indexForFieldOrMethod()));
    if (isInvokedynamic()) {
       buf.append('(');
      buf.append(Integer.toString(index()));
       buf.append(')');
    }
    buf.append(" [Method ");
    StringBuffer sigBuf = new StringBuffer();
    new SignatureConverter(signature(), sigBuf).iterateReturntype();
    buf.append(sigBuf.toString().replace('/', '.'));
    buf.append(spaces);
    buf.append(name().asString());
    buf.append('(');
    sigBuf = new StringBuffer();
    new SignatureConverter(signature(), sigBuf).iterateParameters();
    buf.append(sigBuf.toString().replace('/', '.'));
    buf.append(')');
    buf.append(']');
    if (code() != javaCode()) {
       buf.append(spaces);
       buf.append('[');
       buf.append(getBytecodeName());
       buf.append(']');
    }
    return buf.toString();
  }
}