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 #ifndef SHARE_GC_Z_ZNMETHODDATA_HPP 29 #define SHARE_GC_Z_ZNMETHODDATA_HPP 30 31 class nmethod; 32 template <typename T> class GrowableArray; 33 34 class ZNMethodDataOops { 35 private: 36 const size_t _nimmediates; 37 bool _has_non_immediates; 38 39 static size_t header_size(); 40 41 ZNMethodDataOops(const GrowableArray<oop*>& immediates, bool has_non_immediates); 42 43 public: 44 static ZNMethodDataOops* create(const GrowableArray<oop*>& immediates, bool has_non_immediates); 45 static void destroy(ZNMethodDataOops* oops); 46 47 size_t immediates_count() const; 48 oop** immediates_begin() const; 49 oop** immediates_end() const; 50 51 bool has_non_immediates() const; 52 }; 53 54 class ZNMethodData { 55 private: 56 ZReentrantLock _lock; 57 ZNMethodDataOops* volatile _oops; 58 59 ZNMethodData(nmethod* nm); 60 61 public: 62 static ZNMethodData* create(nmethod* nm); 63 static void destroy(ZNMethodData* data); 64 65 ZReentrantLock* lock(); 66 67 ZNMethodDataOops* oops() const; 68 ZNMethodDataOops* swap_oops(ZNMethodDataOops* oops); 69 }; 70 71 #endif // SHARE_GC_Z_ZNMETHODDATA_HPP