--- old/src/hotspot/share/gc/shared/overheadChecker.hpp	2018-12-12 17:24:07.497876677 +0800
+++ /dev/null	2018-12-04 18:42:22.096405084 +0800
@@ -1,86 +0,0 @@
-/*
- * Copyright (c) 2018, 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_GC_SHARED_OVERHEADCHECKER_HPP
-#define SHARE_GC_SHARED_OVERHEADCHECKER_HPP
-
-#include "memory/allocation.hpp"
-#include "gc/shared/gcCause.hpp"
-
-class SoftRefPolicy;
-
-class OverheadTester: public StackObj {
- public:
-  virtual bool is_exceeded() = 0;
-};
-
-class OverheadChecker: public CHeapObj<mtGC> {
- private:
-  // This is a hint for the heap:  we've detected that GC times
-  // are taking longer than GCTimeLimit allows.
-  bool _gc_overhead_limit_exceeded;
-  // Use for diagnostics only.  If UseGCOverheadLimit is false,
-  // this variable is still set.
-  bool _print_gc_overhead_limit_would_be_exceeded;
-  // Count of consecutive GC that have exceeded the
-  // GC time limit criterion
-  uint _gc_overhead_limit_count;
-  // This flag signals that GCTimeLimit is being exceeded
-  // but may not have done so for the required number of consecutive
-  // collections
-
- public:
-  OverheadChecker();
-
-  // This is a hint for the heap:  we've detected that gc times
-  // are taking longer than GCTimeLimit allows.
-  // Most heaps will choose to throw an OutOfMemoryError when
-  // this occurs but it is up to the heap to request this information
-  // of the policy
-  bool gc_overhead_limit_exceeded() {
-    return _gc_overhead_limit_exceeded;
-  }
-  void set_gc_overhead_limit_exceeded(bool v) {
-    _gc_overhead_limit_exceeded = v;
-  }
-
-  // Tests conditions indicate the GC overhead limit is being approached.
-  bool gc_overhead_limit_near() {
-    return _gc_overhead_limit_count >=
-           (AdaptiveSizePolicyGCTimeLimitThreshold - 1);
-  }
-  void reset_gc_overhead_limit_count() {
-    _gc_overhead_limit_count = 0;
-  }
-
-  // Check the conditions for an out-of-memory due to excessive GC time.
-  // Set _gc_overhead_limit_exceeded if all the conditions have been met.
-  void check_gc_overhead_limit(OverheadTester* time_overhead,
-                               OverheadTester* space_overhead,
-                               bool is_full_gc,
-                               GCCause::Cause gc_cause,
-                               SoftRefPolicy* soft_ref_policy);
-};
-
-#endif // SHARE_GC_SHARED_OVERHEADCHECKER_HPP