1 /* 2 * Copyright (c) 2003, 2007, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2008, 2009 Red Hat, Inc. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 // | ... | 27 // +--------------------+ ------------------ 28 // | stack slot n-1 | low addresses 29 // | ... | 30 // | stack slot 0 | 31 // | monitor m-1 | 32 // | ... | 33 // | monitor 0 | 34 // | oop_tmp | 35 // | method | 36 // | unextended_sp | 37 // | pc | 38 // | frame_type | 39 // | next_frame | high addresses 40 // +--------------------+ ------------------ 41 // | ... | 42 43 class SharkFrame : public ZeroFrame { 44 friend class SharkStack; 45 46 private: 47 SharkFrame() : ZeroFrame() { 48 ShouldNotCallThis(); 49 } 50 51 protected: 52 enum Layout { 53 pc_off = jf_header_words, 54 unextended_sp_off, 55 method_off, 56 oop_tmp_off, 57 header_words 58 }; 59 60 public: 61 address pc() const { 62 return (address) value_of_word(pc_off); 63 } 64 65 intptr_t* unextended_sp() const { 66 return (intptr_t *) value_of_word(unextended_sp_off); 67 } 68 69 methodOop method() const { 70 return (methodOop) value_of_word(method_off); 71 } 72 73 public: 74 void identify_word(int frame_index, 75 int offset, 76 char* fieldbuf, 77 char* valuebuf, 78 int buflen) const; 79 };