1 /* 2 * Copyright (c) 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/zArray.inline.hpp" 26 #include "gc/z/zNMethodAllocator.hpp" 27 #include "memory/allocation.hpp" 28 29 ZArray<void*> ZNMethodAllocator::_deferred_frees; 30 bool ZNMethodAllocator::_defer_frees(false); 31 32 void ZNMethodAllocator::immediate_free(void* data) { 33 FREE_C_HEAP_ARRAY(uint8_t, data); 34 } 35 36 void ZNMethodAllocator::deferred_free(void* data) { 37 _deferred_frees.add(data); 38 } 39 40 void* ZNMethodAllocator::allocate(size_t size) { 41 return NEW_C_HEAP_ARRAY(uint8_t, size, mtGC); 42 } 43 44 void ZNMethodAllocator::free(void* data) { 45 if (data == NULL) { 46 return; 47 } 48 49 if (_defer_frees) { 50 deferred_free(data); 51 } else { 52 immediate_free(data); 53 } 54 } 55 56 void ZNMethodAllocator::activate_deferred_frees() { 57 assert(_deferred_frees.is_empty(), "precondition"); 58 _defer_frees = true; 59 } 60 61 void ZNMethodAllocator::deactivate_and_process_deferred_frees() { 62 _defer_frees = false; 63 64 ZArrayIterator<void*> iter(&_deferred_frees); 65 for (void* data; iter.next(&data);) { 66 immediate_free(data); 67 } 68 _deferred_frees.clear(); 69 }