--- /dev/null	2016-01-16 19:30:22.947416487 +0100
+++ new/src/share/vm/logging/logHandle.hpp	2016-03-29 15:32:05.415341114 +0200
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2016, 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.
+ *
+ */
+#ifndef SHARE_VM_LOGGING_LOGHANDLE_HPP
+#define SHARE_VM_LOGGING_LOGHANDLE_HPP
+
+#include "logging/log.hpp"
+
+// Wraps a Log instance and throws away the template information.
+//
+// This can be used to pass a Log instance as a parameter without
+// polluting the surrounding API with template functions.
+class LogHandle {
+private:
+  bool (*_is_level)(LogLevel::type level);
+  void (*_vwrite)(LogLevelType level, const char* fmt, va_list args) ATTRIBUTE_PRINTF(2, 0);
+
+public:
+  template <LogTagType T0, LogTagType T1, LogTagType T2, LogTagType T3, LogTagType T4, LogTagType GuardTag>
+  LogHandle(const LogImpl<T0, T1, T2, T3, T4, GuardTag>& type_carrier) :
+      _is_level(&LogImpl<T0, T1, T2, T3, T4, GuardTag>::is_level),
+      _vwrite(  &LogImpl<T0, T1, T2, T3, T4, GuardTag>::vwrite) {}
+
+#define LOG_LEVEL(level, name) ATTRIBUTE_PRINTF(2, 0)   \
+  LogHandle& v##name(const char* fmt, va_list args) { \
+    _vwrite(LogLevel::level, fmt, args); \
+    return *this; \
+  } \
+  LogHandle& name(const char* fmt, ...) ATTRIBUTE_PRINTF(2, 3) { \
+    va_list args; \
+    va_start(args, fmt); \
+    _vwrite(LogLevel::level, fmt, args); \
+    va_end(args); \
+    return *this; \
+  } \
+  bool is_##name() { \
+    return _is_level(LogLevel::level); \
+  }
+  LOG_LEVEL_LIST
+#undef LOG_LEVEL
+};
+
+// Wraps a LogTarget instance and throws away the template information.
+//
+// This can be used to pass a Log instance as a parameter without
+// polluting the surrounding API with template functions.
+class LogTargetHandle {
+  friend class LogStream;
+
+private:
+  bool (*_is_level)();
+  void (*_vwrite)(const char* fmt, va_list args) ATTRIBUTE_PRINTF(1, 0);
+
+public:
+  template <LogLevelType level, LogTagType T0, LogTagType T1, LogTagType T2, LogTagType T3, LogTagType T4, LogTagType GuardTag>
+  LogTargetHandle(const LogTargetImpl<level, T0, T1, T2, T3, T4, GuardTag>& type_carrier) :
+      _is_level(&LogImpl<T0, T1, T2, T3, T4, GuardTag>::template is_level<level>),
+      _vwrite(&LogImpl<T0, T1, T2, T3, T4, GuardTag>::template vwrite<level>) {}
+
+  template <LogLevelType level, LogTagType T0, LogTagType T1, LogTagType T2, LogTagType T3, LogTagType T4, LogTagType GuardTag>
+  static LogTargetHandle create() {
+    return LogTargetHandle(LogTargetImpl<level, T0, T1, T2, T3, T4, GuardTag>());
+  }
+
+  void print(const char* fmt, ...) ATTRIBUTE_PRINTF(2, 3) {
+    va_list args;
+    va_start(args, fmt);
+    _vwrite(fmt, args);
+    va_end(args);
+  }
+
+  bool is_enabled() const {
+    return _is_level();
+  }
+
+  // Creates a log stream from the information stored in this instance.
+  // Callers need a ResourceMark on the stack.
+  outputStream* stream() {
+    return create_log_stream(_vwrite);
+  }
+};
+
+#endif // SHARE_VM_LOGGING_LOGHANDLE_HPP