src/share/vm/jfr/support/jfrThreadLocal.cpp

rev 9055 : 8214542: JFR: Old Object Sample event slow on a deep heap in debug builds
Reviewed-by: egahlin, rwestberg

@@ -148,18 +148,20 @@
   return _java_buffer;
 }
 
 JfrStackFrame* JfrThreadLocal::install_stackframes() const {
   assert(_stackframes == NULL, "invariant");
-  _stackdepth = (u4)JfrOptionSet::stackdepth();
-  guarantee(_stackdepth > 0, "Stackdepth must be > 0");
-  _stackframes = NEW_C_HEAP_ARRAY(JfrStackFrame, _stackdepth, mtTracing);
+  _stackframes = NEW_C_HEAP_ARRAY(JfrStackFrame, stackdepth(), mtTracing);
   return _stackframes;
 }
 
 ByteSize JfrThreadLocal::trace_id_offset() {
   return in_ByteSize(offset_of(JfrThreadLocal, _trace_id));
 }
 
 ByteSize JfrThreadLocal::java_event_writer_offset() {
   return in_ByteSize(offset_of(JfrThreadLocal, _java_event_writer));
 }
+
+u4 JfrThreadLocal::stackdepth() const {
+  return _stackdepth != 0 ? _stackdepth : (u4)JfrOptionSet::stackdepth();
+}