1 /* 2 * Copyright (c) 2017, Red Hat, Inc. and/or its affiliates. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. 7 * 8 * This code is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 * version 2 for more details (a copy is included in the LICENSE file that 12 * accompanied this code). 13 * 14 * You should have received a copy of the GNU General Public License version 15 * 2 along with this work; if not, write to the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 * 22 */ 23 24 #ifndef SHARE_VM_SERVICES_EPSILON_COLLECTORPOLICY_HPP 25 #define SHARE_VM_SERVICES_EPSILON_COLLECTORPOLICY_HPP 26 27 #include "utilities/macros.hpp" 28 #if INCLUDE_ALL_GCS 29 #include "gc_implementation/epsilon/epsilonCollectedHeap.hpp" 30 #include "services/memoryPool.hpp" 31 #include "services/memoryUsage.hpp" 32 #endif // INCLUDE_ALL_GCS 33 34 class EpsilonDummyMemoryPool : public CollectedMemoryPool { 35 public: 36 EpsilonDummyMemoryPool(); 37 MemoryUsage get_memory_usage() { return MemoryUsage(0, 0, 0, 0); } 38 size_t used_in_bytes() { return 0; } 39 size_t max_size() const { return 0; } 40 }; 41 42 class EpsilonMemoryPool : public CollectedMemoryPool { 43 private: 44 const static size_t _undefined_max = (size_t) -1; 45 EpsilonCollectedHeap* _heap; 46 47 public: 48 EpsilonMemoryPool(EpsilonCollectedHeap* heap); 49 50 size_t committed_in_bytes() { 51 return _heap->capacity(); 52 } 53 size_t used_in_bytes() { 54 return _heap->used(); 55 } 56 size_t max_size() const { 57 return _heap->max_capacity(); 58 } 59 MemoryUsage get_memory_usage(); 60 }; 61 62 #endif // SHARE_VM_SERVICES_EPSILON_COLLECTORPOLICY_HPP