1 /* 2 * Copyright (c) 2009, 2010, 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 // ciCPCache 26 // 27 // This class represents a constant pool cache. 28 // 29 // Note: This class is called ciCPCache as ciConstantPoolCache is used 30 // for something different. 31 class ciCPCache : public ciObject { 32 private: 33 constantPoolCacheOop get_cpCacheOop() { // must be called inside a VM_ENTRY_MARK 34 return (constantPoolCacheOop) get_oop(); 35 } 36 37 ConstantPoolCacheEntry* entry_at(int i) { 38 int raw_index = i; 39 if (constantPoolCacheOopDesc::is_secondary_index(i)) 40 raw_index = constantPoolCacheOopDesc::decode_secondary_index(i); 41 return get_cpCacheOop()->entry_at(raw_index); 42 } 43 44 public: 45 ciCPCache(constantPoolCacheHandle cpcache) : ciObject(cpcache) {} 46 47 // What kind of ciObject is this? 48 bool is_cpcache() const { return true; } 49 50 // Get the offset in bytes from the oop to the f1 field of the 51 // requested entry. 52 size_t get_f1_offset(int index); 53 54 bool is_f1_null_at(int index); 55 56 int get_pool_index(int index); 57 58 void print(); 59 };