1 /*
   2  * Copyright (c) 2016, 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_JFR_RECORDER_SERVICE_JFRRECORDERSERVICE_HPP
  26 #define SHARE_VM_JFR_RECORDER_SERVICE_JFRRECORDERSERVICE_HPP
  27 
  28 #include "jfr/utilities/jfrAllocation.hpp"
  29 
  30 class JfrCheckpointManager;
  31 class JfrChunkWriter;
  32 class JfrRepository;
  33 class JfrStackTraceRepository;
  34 class JfrStorage;
  35 class JfrStringPool;
  36 
  37 class JfrRecorderService : public StackObj {
  38  private:
  39   JfrCheckpointManager& _checkpoint_manager;
  40   JfrChunkWriter& _chunkwriter;
  41   JfrRepository& _repository;
  42   JfrStackTraceRepository& _stack_trace_repository;
  43   JfrStorage& _storage;
  44   JfrStringPool& _string_pool;
  45 
  46   void open_new_chunk(bool vm_error = false);
  47   void chunk_rotation();
  48   void in_memory_rotation();
  49   void serialize_storage_from_in_memory_recording();
  50   void finalize_current_chunk();
  51   void finalize_current_chunk_on_vm_error();
  52   void prepare_for_vm_error_rotation();
  53   void vm_error_rotation();
  54 
  55   void clear();
  56   void pre_safepoint_clear();
  57   void safepoint_clear();
  58   void invoke_safepoint_clear();
  59   void post_safepoint_clear();
  60 
  61   void write();
  62   void pre_safepoint_write();
  63   void safepoint_write();
  64   void invoke_safepoint_write();
  65   void post_safepoint_write();
  66 
  67  public:
  68   JfrRecorderService();
  69   void start();
  70   void rotate(int msgs);
  71   void process_full_buffers();
  72   void scavenge();
  73   void evaluate_chunk_size_for_rotation();
  74   static bool is_recording();
  75 };
  76 
  77 #endif // SHARE_VM_JFR_RECORDER_SERVICE_JFRRECORDERSERVICE_HPP