1 /*
   2  * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_LEAKPROFILER_STOPOPERATION_HPP
  26 #define SHARE_VM_LEAKPROFILER_STOPOPERATION_HPP
  27 
  28 #include "jfr/leakprofiler/leakProfiler.hpp"
  29 #include "jfr/leakprofiler/sampling/objectSampler.hpp"
  30 #include "jfr/recorder/service/jfrOptionSet.hpp"
  31 #include "logging/log.hpp"
  32 #include "runtime/vmOperations.hpp"
  33 
  34 // Safepoint operation for stopping leak profiler object sampler
  35 class StopOperation : public VM_Operation {
  36  public:
  37   StopOperation() {}
  38 
  39   Mode evaluation_mode() const {
  40     return _safepoint;
  41   }
  42 
  43   VMOp_Type type() const {
  44     return VMOp_GC_HeapInspection;
  45   }
  46 
  47   virtual void doit() {
  48     assert(LeakProfiler::is_running(), "invariant");
  49     ObjectSampler* object_sampler = LeakProfiler::object_sampler();
  50     delete object_sampler;
  51     LeakProfiler::set_object_sampler(NULL);
  52     log_trace(jfr, system)( "Object sampling stopped");
  53   }
  54 };
  55 
  56 #endif // SHARE_VM_LEAKPROFILER_STOPOPERATION_HPP