jdk/src/java.base/share/classes/java/lang/StackStreamFactory.java

*** 69,78 ****
--- 69,79 ----
      private static final int MIN_BATCH_SIZE    = SMALL_BATCH;
  
      // These flags must match the values maintained in the VM
      @Native private static final int DEFAULT_MODE              = 0x0;
      @Native private static final int FILL_CLASS_REFS_ONLY      = 0x2;
+     @Native private static final int GET_CALLER_CLASS          = 0x4;
      @Native private static final int SHOW_HIDDEN_FRAMES        = 0x20;  // LambdaForms are hidden by the VM
      @Native private static final int FILL_LIVE_STACK_FRAMES    = 0x100;
      /*
       * For Throwable to use StackWalker, set useNewThrowable to true.
       * Performance work and extensive testing is needed to replace the
*** 612,624 ****
          }
  
          private Class<?> caller;
  
          CallerClassFinder(StackWalker walker) {
!             super(walker, FILL_CLASS_REFS_ONLY);
!             assert (mode & FILL_CLASS_REFS_ONLY) == FILL_CLASS_REFS_ONLY
!                    : "mode should contain FILL_CLASS_REFS_ONLY";
          }
  
          final class ClassBuffer extends FrameBuffer<Class<?>> {
              Class<?>[] classes;      // caller class for fast path
              ClassBuffer(int batchSize) {
--- 613,623 ----
          }
  
          private Class<?> caller;
  
          CallerClassFinder(StackWalker walker) {
!             super(walker, FILL_CLASS_REFS_ONLY|GET_CALLER_CLASS);
          }
  
          final class ClassBuffer extends FrameBuffer<Class<?>> {
              Class<?>[] classes;      // caller class for fast path
              ClassBuffer(int batchSize) {