1 /*
   2  * Copyright (c) 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
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  23  */
  24 
  25 #ifndef SHARE_VM_OBJECT_COUNT_EVENT_SENDER_HPP
  26 #define SHARE_VM_OBJECT_COUNT_EVENT_SENDER_HPP
  27 
  28 #include "gc_implementation/shared/gcTrace.hpp"
  29 #include "memory/allocation.hpp"
  30 #include "utilities/macros.hpp"
  31 
  32 #if INCLUDE_SERVICES
  33 
  34 class KlassInfoEntry;
  35 
  36 class ObjectCountEventSender : public AllStatic {
  37   static bool _should_send_requestable_event;
  38 
  39   template <typename T>
  40   static void send_event_if_enabled(Klass* klass, jlong count, julong size, GCId gc_id, const Ticks& timestamp);
  41 
  42  public:
  43   static void enable_requestable_event();
  44   static void disable_requestable_event();
  45 
  46 
  47  public:
  48   // The following two functions have the exact same signature as
  49   // hotspot/src/share/vm/gc_implementation/shared/objectCountEventSender.hpp
  50   //
  51   // This file will replace the open file if a closed build is performed.
  52   // These function signatures can therefore not be changed if the open
  53   // signatures aren't changed as well.
  54   static void send(const KlassInfoEntry* entry, GCId gc_id, const Ticks& timestamp);
  55   static bool should_send_event();
  56 };
  57 
  58 #endif // INCLUDE_SERVICES
  59 
  60 #endif // SHARE_VM_OBJECT_COUNT_EVENT_SENDER