rev 53920 : imported patch 8218880-g1-crashes-periodic-gc-gclocker

   1 /*
   2  * Copyright (c) 2001, 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_GC_G1_G1VMOPERATIONS_HPP
  26 #define SHARE_GC_G1_G1VMOPERATIONS_HPP
  27 
  28 #include "gc/shared/gcId.hpp"
  29 #include "gc/shared/gcVMOperations.hpp"
  30 
  31 // VM_operations for the G1 collector.
  32 // VM_GC_Operation:
  33 //   - VM_G1Concurrent
  34 //   - VM_G1CollectForAllocation
  35 //   - VM_G1CollectFull
  36 
  37 class VM_G1CollectFull : public VM_GC_Operation {


  38 public:
  39   VM_G1CollectFull(uint gc_count_before,
  40                    uint full_gc_count_before,
  41                    GCCause::Cause cause) :
  42     VM_GC_Operation(gc_count_before, cause, full_gc_count_before, true) { }

  43   virtual VMOp_Type type() const { return VMOp_G1CollectFull; }
  44   virtual void doit();

  45 };
  46 
  47 class VM_G1CollectForAllocation : public VM_CollectForAllocation {
  48   bool         _pause_succeeded;
  49 
  50   bool         _should_initiate_conc_mark;
  51   bool         _should_retry_gc;
  52   double       _target_pause_time_ms;
  53   uint         _old_marking_cycles_completed_before;
  54 
  55 public:
  56   VM_G1CollectForAllocation(size_t         word_size,
  57                             uint           gc_count_before,
  58                             GCCause::Cause gc_cause,
  59                             bool           should_initiate_conc_mark,
  60                             double         target_pause_time_ms);
  61   virtual VMOp_Type type() const { return VMOp_G1CollectForAllocation; }
  62   virtual bool doit_prologue();
  63   virtual void doit();
  64   virtual void doit_epilogue();
  65   bool should_retry_gc() const { return _should_retry_gc; }
  66   bool pause_succeeded() { return _pause_succeeded; }
  67 };
  68 
  69 // Concurrent G1 stop-the-world operations such as remark and cleanup.
  70 class VM_G1Concurrent : public VM_Operation {
  71   VoidClosure* _cl;
  72   const char*  _message;
  73   uint         _gc_id;
  74 
  75 public:
  76   VM_G1Concurrent(VoidClosure* cl, const char* message) :
  77     _cl(cl), _message(message), _gc_id(GCId::current()) { }
  78   virtual VMOp_Type type() const { return VMOp_G1Concurrent; }
  79   virtual void doit();
  80   virtual bool doit_prologue();
  81   virtual void doit_epilogue();
  82 };
  83 
  84 #endif // SHARE_GC_G1_G1VMOPERATIONS_HPP
--- EOF ---