| /* |
| * This file is part of the Jikes RVM project (http://jikesrvm.org). |
| * |
| * This file is licensed to You under the Eclipse Public License (EPL); |
| * You may not use this file except in compliance with the License. You |
| * may obtain a copy of the License at |
| * |
| * http://www.opensource.org/licenses/eclipse-1.0.php |
| * |
| * See the COPYRIGHT.txt file distributed with this work for information |
| * regarding copyright ownership. |
| */ |
| package org.mmtk.plan.nogc; |
| |
| import org.mmtk.plan.*; |
| import org.mmtk.policy.ImmortalSpace; |
| import org.mmtk.utility.heap.VMRequest; |
| import org.mmtk.vm.VM; |
| |
| import org.vmmagic.pragma.*; |
| |
| |
| /** |
| * This class implements the global state of a a simple allocator |
| * without a collector. |
| */ |
| @Uninterruptible |
| public class NoGC extends Plan { |
| |
| /***************************************************************************** |
| * Class variables |
| */ |
| public static final ImmortalSpace noGCSpace = new ImmortalSpace("default", DEFAULT_POLL_FREQUENCY, VMRequest.create()); |
| public static final int NOGC = noGCSpace.getDescriptor(); |
| |
| |
| /***************************************************************************** |
| * Instance variables |
| */ |
| public final Trace trace = new Trace(metaDataSpace); |
| |
| |
| /***************************************************************************** |
| * Collection |
| */ |
| |
| /** |
| * Perform a (global) collection phase. |
| * |
| * @param phaseId Collection phase |
| */ |
| @Inline |
| @Override |
| public final void collectionPhase(short phaseId) { |
| if (VM.VERIFY_ASSERTIONS) VM.assertions._assert(false); |
| /* |
| if (phaseId == PREPARE) { |
| } |
| if (phaseId == CLOSURE) { |
| } |
| if (phaseId == RELEASE) { |
| } |
| super.collectionPhase(phaseId); |
| */ |
| } |
| |
| /***************************************************************************** |
| * Accounting |
| */ |
| |
| /** |
| * Return the number of pages reserved for use given the pending |
| * allocation. The superclass accounts for its spaces, we just |
| * augment this with the default space's contribution. |
| * |
| * @return The number of pages reserved given the pending |
| * allocation, excluding space reserved for copying. |
| */ |
| @Override |
| public int getPagesUsed() { |
| return (noGCSpace.reservedPages() + super.getPagesUsed()); |
| } |
| |
| |
| /***************************************************************************** |
| * Miscellaneous |
| */ |
| |
| /** |
| * Register specialized methods. |
| */ |
| @Interruptible |
| @Override |
| protected void registerSpecializedMethods() { |
| super.registerSpecializedMethods(); |
| } |
| } |