1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate /* 23*7c478bd9Sstevel@tonic-gate * Copyright 2003 Sun Microsystems, Inc. All rights reserved. 24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms. 25*7c478bd9Sstevel@tonic-gate * 26*7c478bd9Sstevel@tonic-gate * ident "%Z%%M% %I% %E% SMI" 27*7c478bd9Sstevel@tonic-gate * 28*7c478bd9Sstevel@tonic-gate */ 29*7c478bd9Sstevel@tonic-gate 30*7c478bd9Sstevel@tonic-gate package com.sun.solaris.service.locality; 31*7c478bd9Sstevel@tonic-gate 32*7c478bd9Sstevel@tonic-gate import java.util.*; 33*7c478bd9Sstevel@tonic-gate 34*7c478bd9Sstevel@tonic-gate import com.sun.solaris.service.pools.*; 35*7c478bd9Sstevel@tonic-gate 36*7c478bd9Sstevel@tonic-gate /** 37*7c478bd9Sstevel@tonic-gate * A representation of the Locality Groups for a single Solaris 38*7c478bd9Sstevel@tonic-gate * instance. 39*7c478bd9Sstevel@tonic-gate */ 40*7c478bd9Sstevel@tonic-gate public class LocalityDomain 41*7c478bd9Sstevel@tonic-gate { 42*7c478bd9Sstevel@tonic-gate /** 43*7c478bd9Sstevel@tonic-gate * Obtain a Locality Group snapshot based on the view 44*7c478bd9Sstevel@tonic-gate * available to the caller. 45*7c478bd9Sstevel@tonic-gate */ 46*7c478bd9Sstevel@tonic-gate public static final int LGRP_VIEW_CALLER = 0; 47*7c478bd9Sstevel@tonic-gate 48*7c478bd9Sstevel@tonic-gate /** 49*7c478bd9Sstevel@tonic-gate * Obtain a Locality Group snapshot based on the view 50*7c478bd9Sstevel@tonic-gate * of the Operating System. 51*7c478bd9Sstevel@tonic-gate */ 52*7c478bd9Sstevel@tonic-gate public static final int LGRP_VIEW_OS = 1; 53*7c478bd9Sstevel@tonic-gate 54*7c478bd9Sstevel@tonic-gate static 55*7c478bd9Sstevel@tonic-gate { 56*7c478bd9Sstevel@tonic-gate System.loadLibrary("jlgrp"); 57*7c478bd9Sstevel@tonic-gate } 58*7c478bd9Sstevel@tonic-gate 59*7c478bd9Sstevel@tonic-gate /** 60*7c478bd9Sstevel@tonic-gate * The view used to create this LocalityDomain. 61*7c478bd9Sstevel@tonic-gate */ 62*7c478bd9Sstevel@tonic-gate private int view; 63*7c478bd9Sstevel@tonic-gate 64*7c478bd9Sstevel@tonic-gate /** 65*7c478bd9Sstevel@tonic-gate * The cookie which represents the snapshot of locality 66*7c478bd9Sstevel@tonic-gate * information held by the lgrp library. 67*7c478bd9Sstevel@tonic-gate */ 68*7c478bd9Sstevel@tonic-gate private long cookie; 69*7c478bd9Sstevel@tonic-gate 70*7c478bd9Sstevel@tonic-gate /** 71*7c478bd9Sstevel@tonic-gate * The root LocalityGroup for the LocalityDomain 72*7c478bd9Sstevel@tonic-gate */ 73*7c478bd9Sstevel@tonic-gate private LocalityGroup root; 74*7c478bd9Sstevel@tonic-gate 75*7c478bd9Sstevel@tonic-gate /** 76*7c478bd9Sstevel@tonic-gate * Cached value of maxLatency. 77*7c478bd9Sstevel@tonic-gate */ 78*7c478bd9Sstevel@tonic-gate private final int maxLatency; 79*7c478bd9Sstevel@tonic-gate 80*7c478bd9Sstevel@tonic-gate /** 81*7c478bd9Sstevel@tonic-gate * String representation of often used property. 82*7c478bd9Sstevel@tonic-gate */ 83*7c478bd9Sstevel@tonic-gate private final static String CPU_SYS_ID = "cpu.sys_id"; 84*7c478bd9Sstevel@tonic-gate 85*7c478bd9Sstevel@tonic-gate /** 86*7c478bd9Sstevel@tonic-gate * Constructor. 87*7c478bd9Sstevel@tonic-gate * 88*7c478bd9Sstevel@tonic-gate * @param view to use when creating the LocalityDomain. 89*7c478bd9Sstevel@tonic-gate * @throws Exception if there is a problem initializing the 90*7c478bd9Sstevel@tonic-gate * lgrp snapshot. 91*7c478bd9Sstevel@tonic-gate */ LocalityDomain(int view)92*7c478bd9Sstevel@tonic-gate public LocalityDomain(int view) throws Exception 93*7c478bd9Sstevel@tonic-gate { 94*7c478bd9Sstevel@tonic-gate this.view = view; 95*7c478bd9Sstevel@tonic-gate cookie = jl_init(view); 96*7c478bd9Sstevel@tonic-gate root = jl_root(); 97*7c478bd9Sstevel@tonic-gate /* 98*7c478bd9Sstevel@tonic-gate * The maxLatency calculation is expensive and is used 99*7c478bd9Sstevel@tonic-gate * every time a locality objective is examined. Since 100*7c478bd9Sstevel@tonic-gate * it will never change over the lifetime of a 101*7c478bd9Sstevel@tonic-gate * LocalityDomain, we calculate it once in the 102*7c478bd9Sstevel@tonic-gate * constructor and cache for future use. 103*7c478bd9Sstevel@tonic-gate */ 104*7c478bd9Sstevel@tonic-gate maxLatency = calcMaxLatency(); 105*7c478bd9Sstevel@tonic-gate } 106*7c478bd9Sstevel@tonic-gate 107*7c478bd9Sstevel@tonic-gate /** 108*7c478bd9Sstevel@tonic-gate * Reclaim the resource allocated by the C proxy. 109*7c478bd9Sstevel@tonic-gate * 110*7c478bd9Sstevel@tonic-gate * @throws Throwable if there is a problem reclaiming the reosurces. 111*7c478bd9Sstevel@tonic-gate */ finalize()112*7c478bd9Sstevel@tonic-gate protected void finalize() throws Throwable 113*7c478bd9Sstevel@tonic-gate { 114*7c478bd9Sstevel@tonic-gate try 115*7c478bd9Sstevel@tonic-gate { 116*7c478bd9Sstevel@tonic-gate close(); 117*7c478bd9Sstevel@tonic-gate } 118*7c478bd9Sstevel@tonic-gate finally 119*7c478bd9Sstevel@tonic-gate { 120*7c478bd9Sstevel@tonic-gate super.finalize(); 121*7c478bd9Sstevel@tonic-gate } 122*7c478bd9Sstevel@tonic-gate } 123*7c478bd9Sstevel@tonic-gate 124*7c478bd9Sstevel@tonic-gate /** 125*7c478bd9Sstevel@tonic-gate * Return the "root" LocalityGroup. 126*7c478bd9Sstevel@tonic-gate */ getRoot()127*7c478bd9Sstevel@tonic-gate public LocalityGroup getRoot() 128*7c478bd9Sstevel@tonic-gate { 129*7c478bd9Sstevel@tonic-gate return (root); 130*7c478bd9Sstevel@tonic-gate } 131*7c478bd9Sstevel@tonic-gate 132*7c478bd9Sstevel@tonic-gate /** 133*7c478bd9Sstevel@tonic-gate * Close this LocalityDomain. Resources are reclaimed in the C 134*7c478bd9Sstevel@tonic-gate * proxy and this LocalityDomain should never be used 135*7c478bd9Sstevel@tonic-gate * again. None of the LocalityGroups which are referenced from 136*7c478bd9Sstevel@tonic-gate * this LocalityDomain should be used after this method is 137*7c478bd9Sstevel@tonic-gate * invoked. NB: jl_fini returns a success indicator which is 138*7c478bd9Sstevel@tonic-gate * ignored as we are closing this domain. 139*7c478bd9Sstevel@tonic-gate */ close()140*7c478bd9Sstevel@tonic-gate public void close() 141*7c478bd9Sstevel@tonic-gate { 142*7c478bd9Sstevel@tonic-gate if (cookie != 0) { 143*7c478bd9Sstevel@tonic-gate jl_fini(); 144*7c478bd9Sstevel@tonic-gate cookie = 0; 145*7c478bd9Sstevel@tonic-gate root = null; 146*7c478bd9Sstevel@tonic-gate } 147*7c478bd9Sstevel@tonic-gate } 148*7c478bd9Sstevel@tonic-gate 149*7c478bd9Sstevel@tonic-gate /** 150*7c478bd9Sstevel@tonic-gate * Return a string representation of this instance. 151*7c478bd9Sstevel@tonic-gate */ toString()152*7c478bd9Sstevel@tonic-gate public String toString() 153*7c478bd9Sstevel@tonic-gate { 154*7c478bd9Sstevel@tonic-gate return (root.toString()); 155*7c478bd9Sstevel@tonic-gate } 156*7c478bd9Sstevel@tonic-gate 157*7c478bd9Sstevel@tonic-gate /** 158*7c478bd9Sstevel@tonic-gate * Return the groups in this domain to which the supplied cpus 159*7c478bd9Sstevel@tonic-gate * belong, excluding the supplied set of groups. 160*7c478bd9Sstevel@tonic-gate * 161*7c478bd9Sstevel@tonic-gate * @param exclude Set of groups to be excluded. 162*7c478bd9Sstevel@tonic-gate * @param cpus List of cpus 163*7c478bd9Sstevel@tonic-gate * 164*7c478bd9Sstevel@tonic-gate * @throws PoolsException if there is an error accessing the 165*7c478bd9Sstevel@tonic-gate * cpu details. 166*7c478bd9Sstevel@tonic-gate */ foreignGroups(Set exclude, List cpus)167*7c478bd9Sstevel@tonic-gate public Set foreignGroups(Set exclude, List cpus) throws PoolsException 168*7c478bd9Sstevel@tonic-gate { 169*7c478bd9Sstevel@tonic-gate Iterator cpuIt = cpus.iterator(); 170*7c478bd9Sstevel@tonic-gate Set result = new HashSet(); 171*7c478bd9Sstevel@tonic-gate while (cpuIt.hasNext()) { 172*7c478bd9Sstevel@tonic-gate Component comp = (Component) cpuIt.next(); 173*7c478bd9Sstevel@tonic-gate int id = (int) comp.getLongProperty(CPU_SYS_ID); 174*7c478bd9Sstevel@tonic-gate LocalityGroup group = getGroup(id); 175*7c478bd9Sstevel@tonic-gate if (group != null && exclude.contains(group) == false) 176*7c478bd9Sstevel@tonic-gate result.add(group); 177*7c478bd9Sstevel@tonic-gate } 178*7c478bd9Sstevel@tonic-gate return (result); 179*7c478bd9Sstevel@tonic-gate } 180*7c478bd9Sstevel@tonic-gate 181*7c478bd9Sstevel@tonic-gate /** 182*7c478bd9Sstevel@tonic-gate * Return the locality group which contains the majority of 183*7c478bd9Sstevel@tonic-gate * the cpus in the supplied list. If more than one group 184*7c478bd9Sstevel@tonic-gate * satisfies this criteria, then the choice of group is 185*7c478bd9Sstevel@tonic-gate * deterministic but unspecified. 186*7c478bd9Sstevel@tonic-gate * 187*7c478bd9Sstevel@tonic-gate * @param cpus List of cpus to be examined. 188*7c478bd9Sstevel@tonic-gate * 189*7c478bd9Sstevel@tonic-gate * @throws PoolsException if there is an error accessing the 190*7c478bd9Sstevel@tonic-gate * cpu details. 191*7c478bd9Sstevel@tonic-gate */ getRepresentativeGroup(List cpus)192*7c478bd9Sstevel@tonic-gate public LocalityGroup getRepresentativeGroup(List cpus) 193*7c478bd9Sstevel@tonic-gate throws PoolsException 194*7c478bd9Sstevel@tonic-gate { 195*7c478bd9Sstevel@tonic-gate Iterator cpuIt = cpus.iterator(); 196*7c478bd9Sstevel@tonic-gate Map grps = new HashMap(); 197*7c478bd9Sstevel@tonic-gate while (cpuIt.hasNext()) { 198*7c478bd9Sstevel@tonic-gate Component comp = (Component) cpuIt.next(); 199*7c478bd9Sstevel@tonic-gate int id = (int) comp.getLongProperty(CPU_SYS_ID); 200*7c478bd9Sstevel@tonic-gate LocalityGroup group = getGroup(id); 201*7c478bd9Sstevel@tonic-gate Integer score = (Integer) grps.get(group); 202*7c478bd9Sstevel@tonic-gate if (score != null) { 203*7c478bd9Sstevel@tonic-gate int iscore = score.intValue() + 1; 204*7c478bd9Sstevel@tonic-gate grps.put(group, new Integer(iscore)); 205*7c478bd9Sstevel@tonic-gate } else { 206*7c478bd9Sstevel@tonic-gate grps.put(group, new Integer(1)); 207*7c478bd9Sstevel@tonic-gate } 208*7c478bd9Sstevel@tonic-gate } 209*7c478bd9Sstevel@tonic-gate Iterator groupIt = grps.keySet().iterator(); 210*7c478bd9Sstevel@tonic-gate LocalityGroup centre = null; 211*7c478bd9Sstevel@tonic-gate Integer highest = new Integer(0); 212*7c478bd9Sstevel@tonic-gate while (groupIt.hasNext()) { 213*7c478bd9Sstevel@tonic-gate LocalityGroup cand = (LocalityGroup) groupIt.next(); 214*7c478bd9Sstevel@tonic-gate Integer value = (Integer) grps.get(cand); 215*7c478bd9Sstevel@tonic-gate if (value.intValue() > highest.intValue()) { 216*7c478bd9Sstevel@tonic-gate highest = value; 217*7c478bd9Sstevel@tonic-gate centre = cand; 218*7c478bd9Sstevel@tonic-gate } 219*7c478bd9Sstevel@tonic-gate } 220*7c478bd9Sstevel@tonic-gate return (centre); 221*7c478bd9Sstevel@tonic-gate } 222*7c478bd9Sstevel@tonic-gate 223*7c478bd9Sstevel@tonic-gate /** 224*7c478bd9Sstevel@tonic-gate * Return the maximum latency between the groups in this 225*7c478bd9Sstevel@tonic-gate * domain. 226*7c478bd9Sstevel@tonic-gate * 227*7c478bd9Sstevel@tonic-gate */ calcMaxLatency()228*7c478bd9Sstevel@tonic-gate private int calcMaxLatency() 229*7c478bd9Sstevel@tonic-gate { 230*7c478bd9Sstevel@tonic-gate int max = 0; 231*7c478bd9Sstevel@tonic-gate 232*7c478bd9Sstevel@tonic-gate Set groups = getGroups(); 233*7c478bd9Sstevel@tonic-gate Iterator outer = groups.iterator(); 234*7c478bd9Sstevel@tonic-gate while (outer.hasNext()) { 235*7c478bd9Sstevel@tonic-gate Iterator inner = groups.iterator(); 236*7c478bd9Sstevel@tonic-gate LocalityGroup g1 = (LocalityGroup) outer.next(); 237*7c478bd9Sstevel@tonic-gate while (inner.hasNext()) { 238*7c478bd9Sstevel@tonic-gate LocalityGroup g2 = (LocalityGroup) inner.next(); 239*7c478bd9Sstevel@tonic-gate int latency = g1.getLatency(g2); 240*7c478bd9Sstevel@tonic-gate if (latency > max) 241*7c478bd9Sstevel@tonic-gate max = latency; 242*7c478bd9Sstevel@tonic-gate } 243*7c478bd9Sstevel@tonic-gate } 244*7c478bd9Sstevel@tonic-gate return (max); 245*7c478bd9Sstevel@tonic-gate } 246*7c478bd9Sstevel@tonic-gate 247*7c478bd9Sstevel@tonic-gate /** 248*7c478bd9Sstevel@tonic-gate * Return the maximum possible latency between all locality 249*7c478bd9Sstevel@tonic-gate * groups in this domain. 250*7c478bd9Sstevel@tonic-gate */ getMaxLatency()251*7c478bd9Sstevel@tonic-gate public int getMaxLatency() 252*7c478bd9Sstevel@tonic-gate { 253*7c478bd9Sstevel@tonic-gate return (maxLatency); 254*7c478bd9Sstevel@tonic-gate } 255*7c478bd9Sstevel@tonic-gate 256*7c478bd9Sstevel@tonic-gate /** 257*7c478bd9Sstevel@tonic-gate * Return the set of all LocalityGroups for this LocalityDomain. 258*7c478bd9Sstevel@tonic-gate */ getGroups()259*7c478bd9Sstevel@tonic-gate public Set getGroups() 260*7c478bd9Sstevel@tonic-gate { 261*7c478bd9Sstevel@tonic-gate Set groups = new HashSet(); 262*7c478bd9Sstevel@tonic-gate groups.add(root); 263*7c478bd9Sstevel@tonic-gate getGroups(root, groups); 264*7c478bd9Sstevel@tonic-gate return (groups); 265*7c478bd9Sstevel@tonic-gate } 266*7c478bd9Sstevel@tonic-gate 267*7c478bd9Sstevel@tonic-gate /** 268*7c478bd9Sstevel@tonic-gate * Add all the descendent LocalityGroups for the supplied 269*7c478bd9Sstevel@tonic-gate * group into the supplied set. 270*7c478bd9Sstevel@tonic-gate * 271*7c478bd9Sstevel@tonic-gate * @param group is the group whose descendents are processed. 272*7c478bd9Sstevel@tonic-gate * @param descendents the set to add descendents of group. 273*7c478bd9Sstevel@tonic-gate */ getGroups(LocalityGroup group, Set descendents)274*7c478bd9Sstevel@tonic-gate private void getGroups(LocalityGroup group, Set descendents) 275*7c478bd9Sstevel@tonic-gate { 276*7c478bd9Sstevel@tonic-gate Set children = group.getChildren(); 277*7c478bd9Sstevel@tonic-gate 278*7c478bd9Sstevel@tonic-gate if (! children.isEmpty()) { 279*7c478bd9Sstevel@tonic-gate Iterator itChild = children.iterator(); 280*7c478bd9Sstevel@tonic-gate while (itChild.hasNext()) { 281*7c478bd9Sstevel@tonic-gate LocalityGroup child = (LocalityGroup) itChild. 282*7c478bd9Sstevel@tonic-gate next(); 283*7c478bd9Sstevel@tonic-gate getGroups(child, descendents); 284*7c478bd9Sstevel@tonic-gate } 285*7c478bd9Sstevel@tonic-gate descendents.addAll(children); 286*7c478bd9Sstevel@tonic-gate } 287*7c478bd9Sstevel@tonic-gate } 288*7c478bd9Sstevel@tonic-gate 289*7c478bd9Sstevel@tonic-gate /** 290*7c478bd9Sstevel@tonic-gate * Return the LocalityGroup containing the supplied CPU 291*7c478bd9Sstevel@tonic-gate * id. Search all LocalityGroups starting at the root group. 292*7c478bd9Sstevel@tonic-gate * 293*7c478bd9Sstevel@tonic-gate * @param cpuid is the sys-id of the CPU to search for. 294*7c478bd9Sstevel@tonic-gate */ getGroup(int cpuid)295*7c478bd9Sstevel@tonic-gate public LocalityGroup getGroup(int cpuid) 296*7c478bd9Sstevel@tonic-gate { 297*7c478bd9Sstevel@tonic-gate LocalityGroup answer = getGroup(root, cpuid); 298*7c478bd9Sstevel@tonic-gate return (getGroup(root, cpuid)); 299*7c478bd9Sstevel@tonic-gate } 300*7c478bd9Sstevel@tonic-gate 301*7c478bd9Sstevel@tonic-gate /** 302*7c478bd9Sstevel@tonic-gate * Return the LocalityGroup containing the supplied CPU 303*7c478bd9Sstevel@tonic-gate * id. Search LocalityGroups starting at the supplied group. 304*7c478bd9Sstevel@tonic-gate * 305*7c478bd9Sstevel@tonic-gate * @param group is the group to start searching from. 306*7c478bd9Sstevel@tonic-gate * @param cpuid is the sys-id of the CPU to search for. 307*7c478bd9Sstevel@tonic-gate */ getGroup(LocalityGroup group, int cpuid)308*7c478bd9Sstevel@tonic-gate private LocalityGroup getGroup(LocalityGroup group, int cpuid) 309*7c478bd9Sstevel@tonic-gate { 310*7c478bd9Sstevel@tonic-gate Set children = group.getChildren(); 311*7c478bd9Sstevel@tonic-gate 312*7c478bd9Sstevel@tonic-gate if (children.isEmpty()) { 313*7c478bd9Sstevel@tonic-gate int cpus[] = group.getCPUIDs(); 314*7c478bd9Sstevel@tonic-gate 315*7c478bd9Sstevel@tonic-gate 316*7c478bd9Sstevel@tonic-gate for (int i = 0; i < cpus.length; i++) 317*7c478bd9Sstevel@tonic-gate if (cpus[i] == cpuid) { 318*7c478bd9Sstevel@tonic-gate return (group); 319*7c478bd9Sstevel@tonic-gate } 320*7c478bd9Sstevel@tonic-gate } else { 321*7c478bd9Sstevel@tonic-gate Iterator itGroup = children.iterator(); 322*7c478bd9Sstevel@tonic-gate while (itGroup.hasNext()) { 323*7c478bd9Sstevel@tonic-gate LocalityGroup owner; 324*7c478bd9Sstevel@tonic-gate LocalityGroup child = (LocalityGroup) itGroup. 325*7c478bd9Sstevel@tonic-gate next(); 326*7c478bd9Sstevel@tonic-gate if ((owner = getGroup(child, cpuid)) != null) 327*7c478bd9Sstevel@tonic-gate return (owner); 328*7c478bd9Sstevel@tonic-gate } 329*7c478bd9Sstevel@tonic-gate } 330*7c478bd9Sstevel@tonic-gate return (null); 331*7c478bd9Sstevel@tonic-gate } 332*7c478bd9Sstevel@tonic-gate 333*7c478bd9Sstevel@tonic-gate /** 334*7c478bd9Sstevel@tonic-gate * Initialise the LocalityDomain with an lgrp snapshot. 335*7c478bd9Sstevel@tonic-gate * 336*7c478bd9Sstevel@tonic-gate * @param view is the type of snapshot to obtain. 337*7c478bd9Sstevel@tonic-gate */ jl_init(int view)338*7c478bd9Sstevel@tonic-gate private native long jl_init(int view) throws Exception; 339*7c478bd9Sstevel@tonic-gate 340*7c478bd9Sstevel@tonic-gate /** 341*7c478bd9Sstevel@tonic-gate * Release the lgrp snapshot. 342*7c478bd9Sstevel@tonic-gate */ jl_fini()343*7c478bd9Sstevel@tonic-gate private native int jl_fini(); 344*7c478bd9Sstevel@tonic-gate 345*7c478bd9Sstevel@tonic-gate /** 346*7c478bd9Sstevel@tonic-gate * Find the root LocalityGroup. 347*7c478bd9Sstevel@tonic-gate */ jl_root()348*7c478bd9Sstevel@tonic-gate private native LocalityGroup jl_root(); 349*7c478bd9Sstevel@tonic-gate 350*7c478bd9Sstevel@tonic-gate } 351