1 /*
   2  * Copyright (c) 2016, 2019, 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_JFR_RECORDER_STRINGPOOL_JFRSTRINGPOOLWRITER_HPP
  26 #define SHARE_VM_JFR_RECORDER_STRINGPOOL_JFRSTRINGPOOLWRITER_HPP
  27 
  28 #include "memory/allocation.hpp"
  29 #include "jfr/recorder/stringpool/jfrStringPoolBuffer.hpp"
  30 #include "jfr/writers/jfrEventWriterHost.hpp"
  31 #include "jfr/writers/jfrMemoryWriterHost.hpp"
  32 #include "jfr/writers/jfrStorageAdapter.hpp"
  33 
  34 class Thread;
  35 
  36 class JfrStringPoolFlush : public StackObj {
  37  public:
  38   typedef JfrStringPoolBuffer Type;
  39   JfrStringPoolFlush(Type* old, size_t used, size_t requested, Thread* t);
  40   Type* result() { return _result; }
  41  private:
  42   Type* _result;
  43 };
  44 
  45 typedef Adapter<JfrStringPoolFlush> JfrStringPoolAdapter;
  46 typedef AcquireReleaseMemoryWriterHost<JfrStringPoolAdapter, StackObj> JfrTransactionalStringPoolWriter;
  47 typedef EventWriterHost<BigEndianEncoder, CompressedIntegerEncoder, JfrTransactionalStringPoolWriter> JfrStringPoolWriterBase;
  48 
  49 class JfrStringPoolWriter : public JfrStringPoolWriterBase {
  50  private:
  51   size_t _nof_strings;
  52  public:
  53   JfrStringPoolWriter(Thread* thread);
  54   ~JfrStringPoolWriter();
  55   void inc_nof_strings();
  56 };
  57 
  58 #endif // SHARE_VM_JFR_RECORDER_STRINGPOOL_JFRSTRINGPOOLWRITER_HPP