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test/hotspot/jtreg/gc/logging/TestMetaSpaceLog.java

8217389: JTREG: Clean up, remove unused variable warnings

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 package gc.logging;                                                                                                        
25 
26 import java.io.File;                                                                                                       
27 import java.net.URL;                                                                                                       
28 import java.net.URLClassLoader;                                                                                            
29 import java.util.function.Predicate;                                                                                       
30 import java.util.regex.Pattern;                                                                                            
31 import java.util.regex.Matcher;                                                                                            
32 
33 import jdk.test.lib.Asserts;                                                                                               
34 import jdk.test.lib.process.OutputAnalyzer;                                                                                
35 import jdk.test.lib.process.ProcessTools;                                                                                  
36 import sun.hotspot.WhiteBox;                                                                                               
37 
38 /*                                                                                                                         
39  * @test TestMetaSpaceLog                                                                                                  
40  * @bug 8211123                                                                                                            
41  * @summary Ensure that the Metaspace is updated in the log                                                                
42  * @requires vm.gc=="null"                                                                                                 
43  * @key gc                                                                                                                 
44  * @library /test/lib                                                                                                      
45  * @modules java.base/jdk.internal.misc                                                                                    
46  *          java.management                                                                                                
47  *                                                                                                                         
48  * @compile TestMetaSpaceLog.java                                                                                          
49  * @run driver ClassFileInstaller sun.hotspot.WhiteBox                                                                     
50  * @run main gc.logging.TestMetaSpaceLog                                                                                   
51  */                                                                                                                        
52 
53 public class TestMetaSpaceLog {                                                                                            
54   private static Pattern metaSpaceRegexp;                                                                                  
55 
56   static {                                                                                                                 
57     // Do this once here.                                                                                                  
58     metaSpaceRegexp = Pattern.compile(".*Metaspace: ([0-9]+).*->([0-9]+).*");                                              
59   }                                                                                                                        
60 
61   public static void main(String[] args) throws Exception {                                                                
62     testMetaSpaceUpdate("UseParallelGC");                                                                                  
63     testMetaSpaceUpdate("UseG1GC");                                                                                        
64     testMetaSpaceUpdate("UseConcMarkSweepGC");                                                                             
65     testMetaSpaceUpdate("UseSerialGC");                                                                                    
66   }                                                                                                                        
67 
68   private static void verifyContainsMetaSpaceUpdate(OutputAnalyzer output) {                                               
69     Predicate<String> collectedMetaSpace = line -> check(line);                                                            
70                                                                                                                            
71     // At least one metaspace line from GC should show GC being collected.                                                 
72     boolean foundCollectedMetaSpace = output.asLines().stream()                                                            
73         .filter(s -> s.contains("[gc,metaspace"))                                                                          
74         .anyMatch(TestMetaSpaceLog::check);                                                                                
75     Asserts.assertTrue(foundCollectedMetaSpace);                                                                           
76   }                                                                                                                        
77 
78   private static boolean check(String line) {                                                                              
79     Matcher m = metaSpaceRegexp.matcher(line);                                                                             
80     Asserts.assertTrue(m.matches(), "Unexpected line for metaspace logging: " + line);                                     
81     long before = Long.parseLong(m.group(1));                                                                              
82     long after  = Long.parseLong(m.group(2));                                                                              
83     return before > after;                                                                                                 
84   }                                                                                                                        
85 
86   private static void testMetaSpaceUpdate(String gcFlag) throws Exception {                                                
87     // Propagate test.src for the jar file.                                                                                
88     String testSrc= "-Dtest.src=" + System.getProperty("test.src", ".");                                                   
89 

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 package gc.logging;
25 
26 import java.io.File;
27 import java.net.URL;
28 import java.net.URLClassLoader;

29 import java.util.regex.Pattern;
30 import java.util.regex.Matcher;
31 
32 import jdk.test.lib.Asserts;
33 import jdk.test.lib.process.OutputAnalyzer;
34 import jdk.test.lib.process.ProcessTools;
35 import sun.hotspot.WhiteBox;
36 
37 /*
38  * @test TestMetaSpaceLog
39  * @bug 8211123
40  * @summary Ensure that the Metaspace is updated in the log
41  * @requires vm.gc=="null"
42  * @key gc
43  * @library /test/lib
44  * @modules java.base/jdk.internal.misc
45  *          java.management
46  *
47  * @compile TestMetaSpaceLog.java
48  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
49  * @run main gc.logging.TestMetaSpaceLog
50  */
51 
52 public class TestMetaSpaceLog {
53   private static Pattern metaSpaceRegexp;
54 
55   static {
56     // Do this once here.
57     metaSpaceRegexp = Pattern.compile(".*Metaspace: ([0-9]+).*->([0-9]+).*");
58   }
59 
60   public static void main(String[] args) throws Exception {
61     testMetaSpaceUpdate("UseParallelGC");
62     testMetaSpaceUpdate("UseG1GC");
63     testMetaSpaceUpdate("UseConcMarkSweepGC");
64     testMetaSpaceUpdate("UseSerialGC");
65   }
66 
67   private static void verifyContainsMetaSpaceUpdate(OutputAnalyzer output) {


68     // At least one metaspace line from GC should show GC being collected.
69     boolean foundCollectedMetaSpace = output.asLines().stream()
70         .filter(s -> s.contains("[gc,metaspace"))
71         .anyMatch(TestMetaSpaceLog::check);
72     Asserts.assertTrue(foundCollectedMetaSpace);
73   }
74 
75   private static boolean check(String line) {
76     Matcher m = metaSpaceRegexp.matcher(line);
77     Asserts.assertTrue(m.matches(), "Unexpected line for metaspace logging: " + line);
78     long before = Long.parseLong(m.group(1));
79     long after  = Long.parseLong(m.group(2));
80     return before > after;
81   }
82 
83   private static void testMetaSpaceUpdate(String gcFlag) throws Exception {
84     // Propagate test.src for the jar file.
85     String testSrc= "-Dtest.src=" + System.getProperty("test.src", ".");
86 
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