test/java/lang/ref/FinalizeOverride.java
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test/java/lang/ref/FinalizeOverride.java

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  46         patchPrivateFinalize();
  47 
  48         test(new Base(10), 10);
  49         test(new Subclass(20), 0);
  50         test(new SubSubclass(30), 30);
  51         test(new PublicFinalize(40), 40*100+40);
  52         test(new PrivateFinalize(50), 50);
  53         test(new NoOverride(60), 60);
  54     }
  55 
  56     static void test(Object o, int expected) {
  57         int count = finalizedCount.get();
  58         int sum = finalizedSum.get();
  59         privateFinalizeInvoked = false;
  60 
  61         // force GC and finalization
  62         o = null;
  63         while (finalizedCount.get() != (count+1)) {
  64             System.gc();
  65             System.runFinalization();





  66         }
  67 
  68         if (privateFinalizeInvoked) {
  69             throw new RuntimeException("private finalize method invoked");
  70         }
  71         if (finalizedCount.get() != (count+1)) {
  72             throw new RuntimeException("Unexpected count=" + finalizedCount +
  73                 " expected=" + (count+1));
  74         }
  75         if (finalizedSum.get() != (sum+expected)) {
  76             throw new RuntimeException("Unexpected sum=" + finalizedSum +
  77                 " prev=" + sum + " value=" + expected);
  78         }
  79     }
  80 
  81     static void patchPrivateFinalize() throws IOException {
  82         // patch the private f_nal_ze method name to "finalize"
  83         String testClasses = System.getProperty("test.classes", ".");
  84         Path p = Paths.get(testClasses, "FinalizeOverride$PrivateFinalize.class");
  85         byte[] bytes = Files.readAllBytes(p);




  46         patchPrivateFinalize();
  47 
  48         test(new Base(10), 10);
  49         test(new Subclass(20), 0);
  50         test(new SubSubclass(30), 30);
  51         test(new PublicFinalize(40), 40*100+40);
  52         test(new PrivateFinalize(50), 50);
  53         test(new NoOverride(60), 60);
  54     }
  55 
  56     static void test(Object o, int expected) {
  57         int count = finalizedCount.get();
  58         int sum = finalizedSum.get();
  59         privateFinalizeInvoked = false;
  60 
  61         // force GC and finalization
  62         o = null;
  63         while (finalizedCount.get() != (count+1)) {
  64             System.gc();
  65             System.runFinalization();
  66             try {
  67                 Thread.sleep(1000);
  68             } catch (InterruptedException e) {
  69                 System.out.println("Main thread interrupted, continuing execution.");
  70             }
  71         }
  72 
  73         if (privateFinalizeInvoked) {
  74             throw new RuntimeException("private finalize method invoked");
  75         }
  76         if (finalizedCount.get() != (count+1)) {
  77             throw new RuntimeException("Unexpected count=" + finalizedCount +
  78                 " expected=" + (count+1));
  79         }
  80         if (finalizedSum.get() != (sum+expected)) {
  81             throw new RuntimeException("Unexpected sum=" + finalizedSum +
  82                 " prev=" + sum + " value=" + expected);
  83         }
  84     }
  85 
  86     static void patchPrivateFinalize() throws IOException {
  87         // patch the private f_nal_ze method name to "finalize"
  88         String testClasses = System.getProperty("test.classes", ".");
  89         Path p = Paths.get(testClasses, "FinalizeOverride$PrivateFinalize.class");
  90         byte[] bytes = Files.readAllBytes(p);


test/java/lang/ref/FinalizeOverride.java
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