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 "precompiled.hpp" 25 #include "gc/z/zAttachedArray.inline.hpp" 26 #include "gc/z/zLock.inline.hpp" 27 #include "gc/z/zNMethodData.hpp" 28 #include "memory/allocation.hpp" 29 #include "runtime/atomic.hpp" 30 #include "runtime/orderAccess.hpp" 31 #include "utilities/align.hpp" 32 #include "utilities/debug.hpp" 33 #include "utilities/growableArray.hpp" 34 35 ZNMethodDataOops* ZNMethodDataOops::create(const GrowableArray<oop*>& immediates, bool has_non_immediates) { 36 return ::new (AttachedArray::alloc(immediates.length())) ZNMethodDataOops(immediates, has_non_immediates); 37 } 38 39 void ZNMethodDataOops::destroy(ZNMethodDataOops* oops) { 40 AttachedArray::free(oops); 41 } 42 43 ZNMethodDataOops::ZNMethodDataOops(const GrowableArray<oop*>& immediates, bool has_non_immediates) : 44 _immediates(immediates.length()), 45 _has_non_immediates(has_non_immediates) { 46 // Save all immediate oops 47 for (size_t i = 0; i < immediates_count(); i++) { 48 immediates_begin()[i] = immediates.at(int(i)); 49 } 50 } 51 52 size_t ZNMethodDataOops::immediates_count() const { 53 return _immediates.length(); 54 } 55 56 oop** ZNMethodDataOops::immediates_begin() const { 57 return _immediates(this); 58 } 59 60 oop** ZNMethodDataOops::immediates_end() const { 61 return immediates_begin() + immediates_count(); 62 } 63 64 bool ZNMethodDataOops::has_non_immediates() const { 65 return _has_non_immediates; 66 } 67 68 ZNMethodData::ZNMethodData() : 69 _lock(), 70 _oops(NULL) {} 71 72 ZNMethodData::~ZNMethodData() { 73 ZNMethodDataOops::destroy(_oops); 74 } 75 76 ZReentrantLock* ZNMethodData::lock() { 77 return &_lock; 78 } 79 80 ZNMethodDataOops* ZNMethodData::oops() const { 81 return Atomic::load_acquire(&_oops); 82 } 83 84 ZNMethodDataOops* ZNMethodData::swap_oops(ZNMethodDataOops* new_oops) { 85 ZLocker<ZReentrantLock> locker(&_lock); 86 ZNMethodDataOops* const old_oops = _oops; 87 _oops = new_oops; 88 return old_oops; 89 }