1 /* 2 * Copyright (c) 2017, 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 #include "gc/z/zLock.hpp" 25 #include "oops/oopsHierarchy.hpp" 26 #include "utilities/globalDefinitions.hpp" 27 28 class nmethod; 29 template <typename T> class GrowableArray; 30 31 class ZNMethodDataOops { 32 private: 33 const size_t _nimmediates; 34 bool _has_non_immediates; 35 36 static size_t header_size(); 37 38 ZNMethodDataOops(const GrowableArray<oop*>& immediates, bool has_non_immediates); 39 40 public: 41 static ZNMethodDataOops* create(const GrowableArray<oop*>& immediates, bool has_non_immediates); 42 static void destroy(ZNMethodDataOops* oops); 43 44 size_t immediates_count() const; 45 oop** immediates_begin() const; 46 oop** immediates_end() const; 47 48 bool has_non_immediates() const; 49 }; 50 51 class ZNMethodData { 52 private: 53 ZReentrantLock _lock; 54 ZNMethodDataOops* volatile _oops; 55 56 ZNMethodData(nmethod* nm); 57 58 public: 59 static ZNMethodData* create(nmethod* nm); 60 static void destroy(ZNMethodData* data); 61 62 ZReentrantLock* lock(); 63 64 ZNMethodDataOops* oops() const; 65 ZNMethodDataOops* swap_oops(ZNMethodDataOops* oops); 66 };