| /* |
| * 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. |
| */ |
| |
| |
| /* |
| * @test |
| * @key gc |
| * |
| * @summary converted from VM Testbase gc/gctests/gctest01. |
| * VM Testbase keywords: [gc] |
| * |
| * @library /vmTestbase |
| * /test/lib |
| * @run driver jdk.test.lib.FileInstaller . . |
| * @run main/othervm gc.gctests.gctest01.gctest01 100 10 |
| */ |
| |
| package gc.gctests.gctest01; |
| |
| import nsk.share.test.*; |
| import nsk.share.log.*; |
| import nsk.share.gc.*; |
| import nsk.share.TestBug; |
| |
| import java.util.Random; |
| //import RusageStruct; |
| |
| /* -- stress testing |
| create 20 memory evil threads requesting to allocate |
| the object of sizes from 8 to ( 2 ^ 19). |
| The live time of objects is very short. |
| Memory evil thread exits the first time memory allocation fails. |
| */ |
| |
| class ThreadTracker { |
| static int threadCount = 0; |
| |
| static synchronized int getThreadCount() { |
| return threadCount; |
| } |
| |
| static synchronized void setThreadCount(int count) { |
| threadCount = count; |
| } |
| |
| static synchronized void incr() { |
| threadCount++; |
| } |
| |
| static synchronized void decr() { |
| threadCount--; |
| } |
| } |
| |
| class PopulationException extends Exception { |
| } |
| |
| class Person { |
| String name; |
| int ssid; |
| int age; |
| int buf[]; |
| int bufsz; |
| static int populationLimit; |
| static int currentPopulation; |
| |
| public Person(String n, int ssid, int age, int bufsz) throws PopulationException { |
| this.incr(); |
| if (this.getPopulation() > this.getPopulationLimit()) { |
| throw new PopulationException(); |
| } |
| name = n; |
| this.ssid = ssid; |
| this.age = age; |
| if ( bufsz > 0 ) { |
| this.bufsz = bufsz; |
| this.buf = new int[bufsz]; |
| } |
| } |
| |
| static synchronized void incr() { |
| currentPopulation++; |
| } |
| |
| static synchronized int getPopulation() { |
| return currentPopulation; |
| } |
| |
| static synchronized void setPopulation(int census) { |
| currentPopulation = census; |
| } |
| |
| static synchronized void setPopulationLimit(int limit) { |
| populationLimit = limit; |
| } |
| |
| static synchronized int getPopulationLimit() { |
| return populationLimit; |
| } |
| } |
| |
| |
| |
| // create 20 memory evil threads requesting to allocate |
| // the object of sizes from 8 to ( 2 ^ 19). |
| // The live time of objects is very short. |
| public class gctest01 extends TestBase { |
| private String[] args; |
| |
| public gctest01(String[] args) { |
| setArgs(args); |
| } |
| |
| class memevil extends Thread { |
| int sum; |
| int bufsz = 64; |
| |
| public memevil(int bufsz) { |
| ThreadTracker.incr(); |
| sum = 0; |
| this.bufsz = bufsz; |
| |
| } |
| |
| /* Person object is live short, it will be garbage after |
| control returns |
| */ |
| private boolean doit() { |
| try { |
| Person p = new Person("Duke", 100, 100, bufsz); |
| } catch (OutOfMemoryError e ) { |
| log.info(getName() + ": Out of Memory"); |
| return false; //should free up some memory |
| } catch (PopulationException e) { |
| //we've reached the limit, so stop |
| return false; |
| } |
| return true; |
| } |
| |
| public void run() { |
| while ( doit() ) { |
| if ( LocalRandom.random() > 0.6668) { |
| try { |
| sleep(10); // to be nice |
| } |
| catch (InterruptedException e) {} |
| } |
| } |
| //must be done, decrement the thread count |
| ThreadTracker.decr(); |
| } |
| } |
| |
| class escaper extends Thread { |
| public void run() { |
| while ( ThreadTracker.getThreadCount() > 0 ) { |
| int buf[] = new int[32]; |
| try |
| { |
| Thread.currentThread().sleep(1000); |
| } catch (InterruptedException e) { |
| } |
| // log.info("Is the sun rising?"); |
| } |
| } |
| } |
| |
| |
| public void run() { |
| int bufsz = 8; |
| int i = 3; |
| int peopleLimit = 1000; |
| String usage = "usage: gctest01 [NumberOfObjects [Iterations] ] ]"; |
| int loops; |
| int LOOPCOUNT = 10; |
| |
| if (args.length > 0) { |
| try { |
| peopleLimit = new Integer(args[0]).intValue(); |
| } catch (NumberFormatException e) { |
| log.info(usage); |
| throw new TestBug("Bad input to gctest01." + |
| " Expected integer, got: ->" + args[0] + "<-", e); |
| } |
| } |
| |
| if (args.length > 1 ) { |
| try { |
| LOOPCOUNT = new Integer(args[1]).intValue(); |
| } catch (NumberFormatException e) { |
| log.error(usage); |
| throw new TestBug("Bad input to gctest01." + |
| " Expected int, got: ->" + args[1] + "<-", e); |
| } |
| |
| } |
| |
| double before = 0.0; |
| double after; |
| |
| Person.setPopulationLimit(peopleLimit); |
| |
| for (loops = 0; loops < LOOPCOUNT; loops++) { |
| Person.setPopulation(0); |
| escaper you = new escaper(); |
| you.setName("Escaper"); |
| you.start(); |
| i = 3; |
| bufsz = 8; |
| while ( i < 20 ) |
| { |
| memevil me = new memevil(bufsz); |
| me.setName("Memevil" + bufsz); |
| bufsz = 2*bufsz; |
| me.start(); |
| i++; |
| Thread.currentThread().yield(); |
| } |
| try |
| { |
| you.join(); |
| } |
| catch (InterruptedException e) |
| { |
| e.printStackTrace(); |
| } |
| } // end of loops |
| log.info("Test passed."); |
| |
| } |
| |
| public void setArgs(String[] args) { |
| this.args = args; |
| } |
| |
| public static void main(String args[]) { |
| GC.runTest(new gctest01(args), args); |
| } |
| } |