1 /*
2 * Copyright (c) 2002, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24
25 /*
26 * @test
27 * @key gc
28 *
29 * @summary converted from VM Testbase gc/gctests/gctest01.
30 * VM Testbase keywords: [gc]
31 *
32 * @library /vmTestbase
33 * /test/lib
34 * @run driver jdk.test.lib.FileInstaller . .
35 * @run main/othervm gc.gctests.gctest01.gctest01 100 10
36 */
37
38 package gc.gctests.gctest01;
39
40 import nsk.share.test.*;
41 import nsk.share.log.*;
42 import nsk.share.gc.*;
43 import nsk.share.TestBug;
44
45 import java.util.Random;
46 //import RusageStruct;
47
48 /* -- stress testing
49 create 20 memory evil threads requesting to allocate
50 the object of sizes from 8 to ( 2 ^ 19).
51 The live time of objects is very short.
52 Memory evil thread exits the first time memory allocation fails.
53 */
54
55 class ThreadTracker {
56 static int threadCount = 0;
57
58 static synchronized int getThreadCount() {
59 return threadCount;
60 }
61
62 static synchronized void setThreadCount(int count) {
63 threadCount = count;
64 }
65
66 static synchronized void incr() {
67 threadCount++;
68 }
69
70 static synchronized void decr() {
71 threadCount--;
72 }
73 }
74
75 class PopulationException extends Exception {
76 }
77
78 class Person {
79 String name;
80 int ssid;
81 int age;
82 int buf[];
83 int bufsz;
84 static int populationLimit;
85 static int currentPopulation;
86
87 public Person(String n, int ssid, int age, int bufsz) throws PopulationException {
88 this.incr();
89 if (this.getPopulation() > this.getPopulationLimit()) {
90 throw new PopulationException();
91 }
92 name = n;
93 this.ssid = ssid;
94 this.age = age;
95 if ( bufsz > 0 ) {
96 this.bufsz = bufsz;
97 this.buf = new int[bufsz];
98 }
99 }
100
101 static synchronized void incr() {
102 currentPopulation++;
103 }
104
105 static synchronized int getPopulation() {
106 return currentPopulation;
107 }
108
109 static synchronized void setPopulation(int census) {
110 currentPopulation = census;
111 }
112
113 static synchronized void setPopulationLimit(int limit) {
114 populationLimit = limit;
115 }
116
117 static synchronized int getPopulationLimit() {
118 return populationLimit;
119 }
120 }
121
122
123
124 // create 20 memory evil threads requesting to allocate
125 // the object of sizes from 8 to ( 2 ^ 19).
126 // The live time of objects is very short.
127 public class gctest01 extends TestBase {
128 private String[] args;
129
130 public gctest01(String[] args) {
131 setArgs(args);
132 }
133
134 class memevil extends Thread {
135 int sum;
136 int bufsz = 64;
137
138 public memevil(int bufsz) {
139 ThreadTracker.incr();
140 sum = 0;
141 this.bufsz = bufsz;
142
143 }
144
145 /* Person object is live short, it will be garbage after
146 control returns
147 */
148 private boolean doit() {
149 try {
150 Person p = new Person("Duke", 100, 100, bufsz);
151 } catch (OutOfMemoryError e ) {
152 log.info(getName() + ": Out of Memory");
153 return false; //should free up some memory
154 } catch (PopulationException e) {
155 //we've reached the limit, so stop
156 return false;
157 }
158 return true;
159 }
160
161 public void run() {
162 while ( doit() ) {
163 if ( LocalRandom.random() > 0.6668) {
164 try {
165 sleep(10); // to be nice
166 }
167 catch (InterruptedException e) {}
168 }
169 }
170 //must be done, decrement the thread count
171 ThreadTracker.decr();
172 }
173 }
174
175 class escaper extends Thread {
176 public void run() {
177 while ( ThreadTracker.getThreadCount() > 0 ) {
178 int buf[] = new int[32];
179 try
180 {
181 Thread.currentThread().sleep(1000);
182 } catch (InterruptedException e) {
183 }
184 // log.info("Is the sun rising?");
185 }
186 }
187 }
188
189
190 public void run() {
191 int bufsz = 8;
192 int i = 3;
193 int peopleLimit = 1000;
194 String usage = "usage: gctest01 [NumberOfObjects [Iterations] ] ]";
195 int loops;
196 int LOOPCOUNT = 10;
197
198 if (args.length > 0) {
199 try {
200 peopleLimit = new Integer(args[0]).intValue();
201 } catch (NumberFormatException e) {
202 log.info(usage);
203 throw new TestBug("Bad input to gctest01." +
204 " Expected integer, got: ->" + args[0] + "<-", e);
205 }
206 }
207
208 if (args.length > 1 ) {
209 try {
210 LOOPCOUNT = new Integer(args[1]).intValue();
211 } catch (NumberFormatException e) {
212 log.error(usage);
213 throw new TestBug("Bad input to gctest01." +
214 " Expected int, got: ->" + args[1] + "<-", e);
215 }
216
217 }
218
219 double before = 0.0;
220 double after;
221
222 Person.setPopulationLimit(peopleLimit);
223
224 for (loops = 0; loops < LOOPCOUNT; loops++) {
225 Person.setPopulation(0);
226 escaper you = new escaper();
227 you.setName("Escaper");
228 you.start();
229 i = 3;
230 bufsz = 8;
231 while ( i < 20 )
232 {
233 memevil me = new memevil(bufsz);
234 me.setName("Memevil" + bufsz);
235 bufsz = 2*bufsz;
236 me.start();
237 i++;
238 Thread.currentThread().yield();
239 }
240 try
241 {
242 you.join();
243 }
244 catch (InterruptedException e)
245 {
246 e.printStackTrace();
247 }
248 } // end of loops
249 log.info("Test passed.");
250
251 }
252
253 public void setArgs(String[] args) {
254 this.args = args;
255 }
256
257 public static void main(String args[]) {
258 GC.runTest(new gctest01(args), args);
259 }
260 }