--- /dev/null	2019-01-28 17:48:46.000000000 +0800
+++ new/src/share/vm/trace/traceStream.cpp	2019-01-28 17:48:46.000000000 +0800
@@ -0,0 +1,93 @@
+/*
+* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+*
+* This code is free software; you can redistribute it and/or modify it
+* under the terms of the GNU General Public License version 2 only, as
+* published by the Free Software Foundation.
+*
+* This code is distributed in the hope that it will be useful, but WITHOUT
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+* version 2 for more details (a copy is included in the LICENSE file that
+* accompanied this code).
+*
+* You should have received a copy of the GNU General Public License version
+* 2 along with this work; if not, write to the Free Software Foundation,
+* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+*
+* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+* or visit www.oracle.com if you need additional information or have any
+* questions.
+*
+*/
+
+#include "precompiled.hpp"
+#include "trace/traceStream.hpp"
+#if INCLUDE_TRACE
+#include "classfile/classLoaderData.hpp"
+#include "classfile/javaClasses.hpp"
+#include "memory/resourceArea.hpp"
+#include "oops/klass.hpp"
+#include "oops/method.hpp"
+#include "oops/symbol.hpp"
+
+void TraceStream::print_val(const char* label, const Klass* val) const {
+  ResourceMark rm;
+  const char* description = "NULL";
+  if (val != NULL) {
+    const Symbol* name = val->name();
+    if (name != NULL) {
+      description = name->as_C_string();
+    }
+  }
+  tty->print("%s = %s", label, description);
+}
+
+void TraceStream::print_val(const char* label, const Method* val) const {
+  ResourceMark rm;
+  const char* description = "NULL";
+  if (val != NULL) {
+    description = val->name_and_sig_as_C_string();
+  }
+  tty->print("%s = %s", label, description);
+}
+
+void TraceStream::print_val(const char* label, const ClassLoaderData* cld) const {
+/* guangyu.zgy not implemented yet
+  ResourceMark rm;
+  if (cld == NULL || cld->is_anonymous()) {
+    tty->print("%s = NULL", label);
+    return;
+  }
+  const char* class_loader_name = "NULL";
+  const char* class_loader_type_name = "NULL";
+  const oop class_loader_oop = cld->class_loader();
+
+  if (class_loader_oop != NULL) {
+    const Klass* k = class_loader_oop->klass();
+    assert(k != NULL, "invariant");
+    const Symbol* klass_name_sym = k->name();
+    if (klass_name_sym != NULL) {
+      class_loader_type_name = klass_name_sym->as_C_string();
+    }
+    const oop class_loader_name_oop =
+      java_lang_ClassLoader::name(class_loader_oop);
+    if (class_loader_name_oop != NULL) {
+      const char* class_loader_name_from_oop =
+        java_lang_String::as_utf8_string(class_loader_name_oop);
+      if (class_loader_name_from_oop != NULL &&
+            class_loader_name_from_oop[0] != '\0') {
+        class_loader_name = class_loader_name_from_oop;
+      }
+    }
+  } else {
+    assert(class_loader_oop == NULL, "invariant");
+    // anonymous CLDs are excluded, this would be the boot loader
+    class_loader_name = "boot";
+  }
+  tty->print("%s = name=%s class=%s", label, class_loader_name, class_loader_type_name);
+*/
+}
+
+#endif // INCLUDE_TRACE