1 /*
   2  * Copyright (c) 2017, 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 #ifndef SHARE_GC_Z_ZSERVICEABILITY_HPP
  25 #define SHARE_GC_Z_ZSERVICEABILITY_HPP
  26 
  27 #include "memory/allocation.hpp"
  28 #include "services/memoryManager.hpp"
  29 #include "services/memoryPool.hpp"
  30 #include "services/memoryService.hpp"
  31 
  32 class ZServiceabilityCounters;
  33 
  34 class ZServiceabilityMemoryPool : public CollectedMemoryPool {
  35 public:
  36   ZServiceabilityMemoryPool(size_t min_capacity, size_t max_capacity);
  37 
  38   virtual size_t used_in_bytes();
  39   virtual MemoryUsage get_memory_usage();
  40 };
  41 
  42 class ZServiceabilityMemoryManager : public GCMemoryManager {
  43 public:
  44   ZServiceabilityMemoryManager(ZServiceabilityMemoryPool* pool);
  45 };
  46 
  47 class ZServiceability {
  48 private:
  49   const size_t                 _min_capacity;
  50   const size_t                 _max_capacity;
  51   ZServiceabilityMemoryPool    _memory_pool;
  52   ZServiceabilityMemoryManager _memory_manager;
  53   ZServiceabilityCounters*     _counters;
  54 
  55 public:
  56   ZServiceability(size_t min_capacity, size_t max_capacity);
  57 
  58   void initialize();
  59 
  60   MemoryPool* memory_pool();
  61   GCMemoryManager* memory_manager();
  62   ZServiceabilityCounters* counters();
  63 };
  64 
  65 class ZServiceabilityMemoryUsageTracker {
  66 public:
  67   ~ZServiceabilityMemoryUsageTracker();
  68 };
  69 
  70 class ZServiceabilityManagerStatsTracer {
  71 private:
  72   TraceMemoryManagerStats _stats;
  73 
  74 public:
  75   ZServiceabilityManagerStatsTracer(bool is_gc_begin, bool is_gc_end);
  76 };
  77 
  78 class ZServiceabilityCountersTracer {
  79 public:
  80   ZServiceabilityCountersTracer();
  81   ~ZServiceabilityCountersTracer();
  82 };
  83 
  84 template <bool IsGCStart, bool IsGCEnd>
  85 class ZServiceabilityTracer : public StackObj {
  86 private:
  87   ZServiceabilityMemoryUsageTracker _memory_usage_tracker;
  88   ZServiceabilityManagerStatsTracer _manager_stats_tracer;
  89   ZServiceabilityCountersTracer     _counters_tracer;
  90 
  91 public:
  92   ZServiceabilityTracer() :
  93       _memory_usage_tracker(),
  94       _manager_stats_tracer(IsGCStart, IsGCEnd),
  95       _counters_tracer() {}
  96 };
  97 
  98 typedef ZServiceabilityTracer<true,  false> ZServiceabilityMarkStartTracer;
  99 typedef ZServiceabilityTracer<false, false> ZServiceabilityMarkEndTracer;
 100 typedef ZServiceabilityTracer<false, true>  ZServiceabilityRelocateStartTracer;
 101 
 102 #endif // SHARE_GC_Z_ZSERVICEABILITY_HPP