Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/asm/sparc/SPARCArgument.java @ 210:05712c37c828
6676016: ParallelOldGC leaks memory
Summary: ensure that GCTask threads release resource and handle memory
Reviewed-by: jmasa, chrisphi
author | jcoomes |
---|---|
date | Wed, 18 Jun 2008 18:36:47 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2000-2001 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ package sun.jvm.hotspot.asm.sparc; import sun.jvm.hotspot.asm.*; import sun.jvm.hotspot.utilities.*; /** SPARCArgument is an abstraction used to represent an outgoing actual argument or an incoming formal parameter, whether it resides in memory or in a register, in a manner consistent with the SPARC Application Binary Interface, or ABI. This is often referred to as the native or C calling convention. */ public class SPARCArgument { private int number; private boolean isIn; // FIXME: add 64-bit stuff here (support for FP registers) /** Only 6 registers may contain integer parameters */ public static final int NUM_REGISTER_PARAMETERS = 6; public SPARCArgument(int number, boolean isIn) { this.number = number; this.isIn = isIn; } int getNumber() { return number; } boolean getIsIn() { return isIn; } boolean getIsOut() { return !getIsIn(); } public SPARCArgument getSuccessor() { return new SPARCArgument(getNumber() + 1, getIsIn()); } public SPARCArgument asIn() { return new SPARCArgument(getNumber(), true); } public SPARCArgument asOut() { return new SPARCArgument(getNumber(), false); } /** Locating register-based arguments */ public boolean isRegister() { return number < NUM_REGISTER_PARAMETERS; } public SPARCRegister asRegister() { if (Assert.ASSERTS_ENABLED) { Assert.that(isRegister(), "must be a register argument"); } return new SPARCRegister(getIsIn() ? SPARCRegisterType.IN : SPARCRegisterType.OUT, getNumber()); } // locating memory-based arguments (FIXME: elided for now, will // necessitate creating new SPARCAddress class) // public SPARCAddress asAddress() { // if (Assert.ASSERTS_ENABLED) { // Assert.that(!isRegister(), "must be a memory argument"); // } // return addressInFrame(); // } // // /** When applied to a register-based argument, give the corresponding address // into the 6-word area "into which callee may store register arguments" // (This is a different place than the corresponding register-save area location.) */ // public SPARCAddress addressInFrame() const { // return SPARCAddress( is_in() ? Address::extra_in_argument // : Address::extra_out_argument, // _number ); // } }