java-interp.h (_Jv_Frame::depth): New function.

* include/java-interp.h (_Jv_Frame::depth):
        New function.
        * jvmti.cc (_Jv_JVMTI_GetFrameCount): Use _Jv_Frame::depth.

From-SVN: r121709

libjava/include/java-interp.h

@@ -1,6 +1,6 @@
 // java-interp.h - Header file for the bytecode interpreter.  -*- c++ -*-
 
-/* Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006  Free Software Foundation
+/* Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007  Free Software Foundation
 
    This file is part of libgcj.
 
@@ -357,6 +357,16 @@ public:
   {
     thread->frame = (gnu::gcj::RawData *) next;
   }
+
+  int depth ()
+  {
+    int depth = 0;
+    struct _Jv_Frame *f;
+    for (f = this; f != NULL; f = f->next)
+      ++depth;
+
+    return depth;
+  }
 };
 
 // An interpreted frame in the call stack