| /* |
| * Copyright (c) 2002, 2018, 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. |
| */ |
| |
| /* stress testing |
| Redthreads keep removing new nodes from a binary sort tree( |
| all nodes of its left subtree is less than itself, all nodes |
| of its right subtree is large than itself). |
| Bluethreads keep adding nodes into the binary sort tree. |
| YellowThreads search the binary sort tree. |
| The nodes removed from the tree will become garbages immediately |
| Create 10 Redthreads and 10 Bluethreads to manipulate the |
| the same binary tree involving excessive memory allocation |
| to test if memory management module and gc() crash. |
| */ |
| |
| |
| /* |
| * @test |
| * @key gc |
| * |
| * @summary converted from VM Testbase gc/gctests/gctest03. |
| * VM Testbase keywords: [gc] |
| * |
| * @library /vmTestbase |
| * /test/lib |
| * @run driver jdk.test.lib.FileInstaller . . |
| * @compile Tree.java appthread.java |
| * @run main/othervm gc.gctests.gctest03.gctest03 10000 |
| */ |
| |
| package gc.gctests.gctest03; |
| |
| import nsk.share.test.*; |
| import nsk.share.gc.*; |
| import nsk.share.TestFailure; |
| import nsk.share.TestBug; |
| |
| //import Tree; |
| //import Redthread; |
| //import Bluethread; |
| //import LocalRandom; |
| import java.util.Random; |
| |
| public class gctest03 extends TestBase { |
| private String[] args; |
| |
| public gctest03(String[] args) { |
| this.args = args; |
| } |
| |
| public void run() { |
| int i = 1; |
| int dataNodeLimit = 100000; |
| |
| if (args.length > 0) { |
| try { |
| dataNodeLimit = new Integer(args[0]).intValue(); |
| } catch (NumberFormatException e) { |
| throw new TestBug("Bad input to gctest03. Expected integer, " + |
| " got: ->" + args[0] + "<-", e); |
| } |
| } |
| |
| for (int j = 0; j < 10; j++) { |
| DataNode.setDataNodeLimit(dataNodeLimit); |
| DataNode.clearDataNodeCount(); |
| |
| Tree tr = new Tree(); |
| for (i =2; i < 100; i++) { |
| try { |
| DataNode d = new DataNode(i); |
| TreeNode t = new TreeNode(d); |
| tr.insert(t); |
| } catch (DataNodeException e) { |
| throw new TestFailure("DataNodeException caught in gctest03.main()", e); |
| } |
| } |
| |
| int sz = 10; |
| |
| //create 10 threads adding data into binary tree. |
| // each thread only adds the multiple of its key |
| //(1, 2, 3, 4, 5, 6, 7, 8, 9 , 10). No duplication |
| |
| Redthread rth[] = new Redthread[sz]; |
| |
| for(i=0; i < sz; i++) { |
| rth[i] = new Redthread(tr, i+1); |
| rth[i].setName("Redthread" + i); |
| rth[i].start(); |
| } |
| |
| //create 10 threads removing data from the tree. |
| |
| Bluethread bth[] = new Bluethread[sz]; |
| |
| for(i=0; i < sz; i++) { |
| bth[i] = new Bluethread(tr, i+1); |
| bth[i].setName("Bluethread" + i); |
| bth[i].start(); |
| } |
| |
| |
| //create 10 threads inquiring data from the tree |
| |
| Yellowthread yth[] = new Yellowthread[sz]; |
| for(i=0; i < sz; i++) { |
| yth[i] = new Yellowthread(tr, i+1); |
| yth[i].setName("Yellowthread" + i); |
| yth[i].start(); |
| } |
| |
| for (i = 0; i < sz; i++) { |
| try { |
| rth[i].join(); |
| bth[i].join(); |
| yth[i].join(); |
| } catch (InterruptedException e) { |
| System.err.println("Error joining with threads in gctest03.main()"); |
| System.err.println("Loop count: " + i); |
| } |
| } |
| } |
| |
| } |
| |
| public static void main(String args[]) { |
| GC.runTest(new gctest03(args), args); |
| } |
| } |