1 /*
2 * Copyright (c) 2014, 2017, 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 * @summary Exercise the java.lang.instrument.Instrumentation APIs on classes archived
28 * using CDS/AppCDSv1/AppCDSv2.
29 * @library /test/lib /test/hotspot/jtreg/runtime/appcds /test/hotspot/jtreg/runtime/appcds/test-classes
30 * @requires vm.cds
31 * @requires vm.flavor != "minimal"
32 * @modules java.base/jdk.internal.misc
33 * jdk.jartool/sun.tools.jar
34 * java.management
35 * @build sun.hotspot.WhiteBox
36 * InstrumentationApp
37 * InstrumentationClassFileTransformer
38 * InstrumentationRegisterClassFileTransformer
39 * @run main/othervm InstrumentationTest
40 */
41
42 // Note: TestCommon is from /test/hotspot/jtreg/runtime/appcds/TestCommon.java
43 // Note: Util is from /test/hotspot/jtreg/runtime/appcds/test-classes/TestCommon.java
44
45 import com.sun.tools.attach.VirtualMachine;
46 import com.sun.tools.attach.VirtualMachineDescriptor;
47 import java.io.File;
48 import java.io.FileOutputStream;
49 import java.util.List;
50 import jdk.test.lib.Asserts;
51 import jdk.test.lib.cds.CDSOptions;
52 import jdk.test.lib.process.OutputAnalyzer;
53 import jdk.test.lib.process.ProcessTools;
54
55 public class InstrumentationTest {
56 public static String bootClasses[] = {
57 "InstrumentationApp$Intf",
58 "InstrumentationApp$Bar",
59 "sun.hotspot.WhiteBox",
60 };
61 public static String appClasses[] = {
62 "InstrumentationApp",
63 "InstrumentationApp$Foo",
64 "InstrumentationApp$MyLoader",
65 };
66 public static String custClasses[] = {
67 "InstrumentationApp$Coo",
68 };
69 public static String sharedClasses[] = TestCommon.concat(bootClasses, appClasses);
162 checkAttach(t);
163 }
164
165 static int flagFileSerial = 1;
166 static private String getFlagFile(boolean attachAgent) {
167 if (attachAgent) {
168 // Do not reuse the same file name as Windows may fail to
169 // delete the file.
170 return "attach.flag." + ProcessHandle.current().pid() +
171 "." + (flagFileSerial++) + "." + System.currentTimeMillis();
172 } else {
173 return "noattach";
174 }
175 }
176
177 static AgentAttachThread doAttach(boolean attachAgent, String flagFile, String agentJar) throws Throwable {
178 if (!attachAgent) {
179 return null;
180 }
181
182 // We use the flagFile to prevent the child process to make progress, until we have
183 // attached to it.
184 File f = new File(flagFile);
185 try (FileOutputStream o = new FileOutputStream(f)) {
186 o.write(1);
187 }
188 if (!f.exists()) {
189 throw new RuntimeException("Failed to create " + f);
190 }
191
192 // At this point, the child process is not yet launched. Note that
193 // TestCommon.exec() and OutputAnalyzer.OutputAnalyzer() both block
194 // until the child process has finished.
195 //
196 // So, we will launch a AgentAttachThread which will poll the system
197 // until the child process is launched, and then do the attachment.
198 // The child process is uniquely identified by having flagFile in its
199 // command-line -- see AgentAttachThread.getPid().
200 AgentAttachThread t = new AgentAttachThread(flagFile, agentJar);
201 t.start();
202 return t;
203 }
204
205 static void checkAttach(AgentAttachThread thread) throws Throwable {
206 if (thread != null) {
207 thread.check();
208 }
209 }
210
211 static class AgentAttachThread extends Thread {
212 String flagFile;
213 String agentJar;
214 volatile boolean succeeded;
215
216 AgentAttachThread(String flagFile, String agentJar) {
217 this.flagFile = flagFile;
218 this.agentJar = agentJar;
219 this.succeeded = false;
220 }
221
222 static String getPid(String flagFile) throws Throwable {
223 while (true) {
224 // Keep polling until the child process has been launched. If for some
225 // reason the child process fails to launch, this test will be terminated
226 // by JTREG's time-out mechanism.
227 Thread.sleep(100);
228 List<VirtualMachineDescriptor> vmds = VirtualMachine.list();
229 for (VirtualMachineDescriptor vmd : vmds) {
230 if (vmd.displayName().contains(flagFile) && vmd.displayName().contains("InstrumentationApp")) {
231 // We use flagFile (which has the PID of this process) as a unique identifier
232 // to ident the child process, which we want to attach to.
233 System.out.println("Process found: " + vmd.id() + " " + vmd.displayName());
234 return vmd.id();
235 }
236 }
237 }
238 }
239
240 public void run() {
241 try {
242 String pid = getPid(flagFile);
243 VirtualMachine vm = VirtualMachine.attach(pid);
244 System.out.println(agentJar);
245 vm.loadAgent(agentJar);
246 } catch (Throwable t) {
247 t.printStackTrace();
248 throw new RuntimeException(t);
249 }
250
251 // Delete the flagFile to indicate to the child process that we
252 // have attached to it, so it should proceed.
253 File f = new File(flagFile);
254 for (int i=0; i<5; i++) {
255 // The detele may fail on Windows if the child JVM is checking
256 // f.exists() at exactly the same time?? Let's do a little
257 // dance.
258 f.delete();
259 try {
260 Thread.sleep(10);
261 } catch (Throwable t) {;}
262 }
|
1 /*
2 * Copyright (c) 2014, 2019, 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 * @summary Exercise the java.lang.instrument.Instrumentation APIs on classes archived
28 * using CDS/AppCDSv1/AppCDSv2.
29 * @library /test/lib /test/hotspot/jtreg/runtime/appcds /test/hotspot/jtreg/runtime/appcds/test-classes
30 * @requires vm.cds
31 * @requires vm.flavor != "minimal"
32 * @build sun.hotspot.WhiteBox
33 * InstrumentationApp
34 * InstrumentationClassFileTransformer
35 * InstrumentationRegisterClassFileTransformer
36 * @run main/othervm InstrumentationTest
37 */
38
39 // Note: TestCommon is from /test/hotspot/jtreg/runtime/appcds/TestCommon.java
40 // Note: Util is from /test/hotspot/jtreg/runtime/appcds/test-classes/TestCommon.java
41
42 import com.sun.tools.attach.VirtualMachine;
43 import java.io.File;
44 import java.io.FileInputStream;
45 import java.util.Scanner;
46 import jdk.test.lib.Asserts;
47 import jdk.test.lib.cds.CDSOptions;
48 import jdk.test.lib.process.OutputAnalyzer;
49 import jdk.test.lib.process.ProcessTools;
50
51 public class InstrumentationTest {
52 public static String bootClasses[] = {
53 "InstrumentationApp$Intf",
54 "InstrumentationApp$Bar",
55 "sun.hotspot.WhiteBox",
56 };
57 public static String appClasses[] = {
58 "InstrumentationApp",
59 "InstrumentationApp$Foo",
60 "InstrumentationApp$MyLoader",
61 };
62 public static String custClasses[] = {
63 "InstrumentationApp$Coo",
64 };
65 public static String sharedClasses[] = TestCommon.concat(bootClasses, appClasses);
158 checkAttach(t);
159 }
160
161 static int flagFileSerial = 1;
162 static private String getFlagFile(boolean attachAgent) {
163 if (attachAgent) {
164 // Do not reuse the same file name as Windows may fail to
165 // delete the file.
166 return "attach.flag." + ProcessHandle.current().pid() +
167 "." + (flagFileSerial++) + "." + System.currentTimeMillis();
168 } else {
169 return "noattach";
170 }
171 }
172
173 static AgentAttachThread doAttach(boolean attachAgent, String flagFile, String agentJar) throws Throwable {
174 if (!attachAgent) {
175 return null;
176 }
177
178 // Hand-shake protocol with the child process
179 // [1] Parent process (this process) launches child process (InstrumentationApp)
180 // and then waits until child process writes its pid into the flagFile.
181 // [2] Child process process starts up, writes its pid into the flagFile,
182 // and waits for the flagFile to be deleted.
183 // [3] When parent process gets the pid, it attaches to the child process
184 // (if we attempt to attach to a process too early, the SIGQUIT
185 // may cause the child to die) and deletes the flagFile.
186 // [4] Child process resumes execution.
187
188 File f = new File(flagFile);
189 f.delete();
190 if (f.exists()) {
191 throw new RuntimeException("Flag file should not exist: " + f);
192 }
193
194 // At this point, the child process is not yet launched. Note that
195 // TestCommon.exec() and OutputAnalyzer.OutputAnalyzer() both block
196 // until the child process has finished.
197 //
198 // So, we will launch a AgentAttachThread which will poll the flagFile
199 // until the child process is launched.
200 AgentAttachThread t = new AgentAttachThread(flagFile, agentJar);
201 t.start();
202 return t;
203 }
204
205 static void checkAttach(AgentAttachThread thread) throws Throwable {
206 if (thread != null) {
207 thread.check();
208 }
209 }
210
211 static class AgentAttachThread extends Thread {
212 String flagFile;
213 String agentJar;
214 volatile boolean succeeded;
215
216 AgentAttachThread(String flagFile, String agentJar) {
217 this.flagFile = flagFile;
218 this.agentJar = agentJar;
219 this.succeeded = false;
220 }
221
222 static String getPid(String flagFile) throws Throwable {
223 while (true) {
224 // Keep polling until the child process has been launched. If for some
225 // reason the child process fails to launch, this test will be terminated
226 // by JTREG's time-out mechanism.
227 Thread.sleep(100);
228 File f = new File(flagFile);
229 if (f.exists() && f.length() > 100) {
230 try (FileInputStream in = new FileInputStream(f)) {
231 Scanner scanner = new Scanner(in);
232 return Long.toString(scanner.nextLong());
233 } catch (Throwable t) {
234 // This may happen on Windows if the child process has not
235 // fully closed the output stream to the flagFile
236 System.out.println("Ignored: " + t);
237 t.printStackTrace(System.out);
238 continue;
239 }
240 }
241 }
242 }
243
244 public void run() {
245 try {
246 String pid = getPid(flagFile);
247 System.out.println("child pid = " + pid);
248 VirtualMachine vm = VirtualMachine.attach(pid);
249 System.out.println(agentJar);
250 vm.loadAgent(agentJar);
251 } catch (Throwable t) {
252 t.printStackTrace();
253 throw new RuntimeException(t);
254 }
255
256 // Delete the flagFile to indicate to the child process that we
257 // have attached to it, so it should proceed.
258 File f = new File(flagFile);
259 for (int i=0; i<5; i++) {
260 // The detele may fail on Windows if the child JVM is checking
261 // f.exists() at exactly the same time?? Let's do a little
262 // dance.
263 f.delete();
264 try {
265 Thread.sleep(10);
266 } catch (Throwable t) {;}
267 }
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