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 25 #ifndef SHARE_GC_G1_G1FULLGCCOMPACTIONPOINT_HPP 26 #define SHARE_GC_G1_G1FULLGCCOMPACTIONPOINT_HPP 27 28 #include "memory/allocation.hpp" 29 #include "oops/oopsHierarchy.hpp" 30 #include "utilities/growableArray.hpp" 31 32 class HeapRegion; 33 class SlidingForwarding; 34 35 class G1FullGCCompactionPoint : public CHeapObj<mtGC> { 36 HeapRegion* _current_region; 37 HeapWord* _threshold; 38 HeapWord* _compaction_top; 39 GrowableArray<HeapRegion*>* _compaction_regions; 40 GrowableArrayIterator<HeapRegion*> _compaction_region_iterator; 41 42 bool object_will_fit(size_t size); 43 void initialize_values(bool init_threshold); 44 void switch_region(); 45 HeapRegion* next_region(); 46 47 public: 48 G1FullGCCompactionPoint(); 49 ~G1FullGCCompactionPoint(); 50 51 bool has_regions(); 52 bool is_initialized(); 53 void initialize(HeapRegion* hr, bool init_threshold); 54 void update(); 55 void forward(SlidingForwarding* const forwarding, oop object, size_t size); 56 void add(HeapRegion* hr); 57 58 HeapRegion* remove_last(); 59 HeapRegion* current_region(); 60 61 GrowableArray<HeapRegion*>* regions(); 62 }; 63 64 #endif // SHARE_GC_G1_G1FULLGCCOMPACTIONPOINT_HPP