1 /* 2 * Copyright (c) 2016, 2018, 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_VM_JFR_WRITERS_JFRSTORAGEHOST_HPP 26 #define SHARE_VM_JFR_WRITERS_JFRSTORAGEHOST_HPP 27 28 #include "jfr/writers/jfrPosition.inline.hpp" 29 30 template <typename Adapter, typename AP> // Adapter and AllocationPolicy 31 class StorageHost : public Position<AP> { 32 public: 33 typedef typename Adapter::StorageType StorageType; 34 private: 35 Adapter _adapter; 36 37 protected: 38 void bind(); 39 void soft_reset(); 40 void hard_reset(); 41 void cancel(); 42 bool is_backed(); 43 bool accommodate(size_t used, size_t requested); 44 void commit(); 45 void release(); 46 StorageHost(StorageType* storage, Thread* thread); 47 StorageHost(StorageType* storage, size_t size); 48 StorageHost(Thread* thread); 49 50 public: 51 StorageType* storage(); 52 bool is_valid() const; 53 void set_storage(StorageType* storage); 54 void flush(); 55 void seek(intptr_t offset); 56 }; 57 58 #endif // SHARE_VM_JFR_WRITERS_JFRSTORAGEHOST_HPP 59