Wed, 06 Jan 2010 22:21:39 -0800
Merge
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1998-2004 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | // A compiledICHolderOop is a helper object for the inline cache implementation. |
duke@435 | 26 | // It holds an intermediate value (method+klass pair) used when converting from |
duke@435 | 27 | // compiled to an interpreted call. |
duke@435 | 28 | // |
duke@435 | 29 | // compiledICHolderOops are always allocated permanent (to avoid traversing the |
duke@435 | 30 | // codeCache during scavenge). |
duke@435 | 31 | |
duke@435 | 32 | |
duke@435 | 33 | class compiledICHolderOopDesc : public oopDesc { |
duke@435 | 34 | friend class VMStructs; |
duke@435 | 35 | private: |
duke@435 | 36 | methodOop _holder_method; |
duke@435 | 37 | klassOop _holder_klass; // to avoid name conflict with oopDesc::_klass |
duke@435 | 38 | public: |
duke@435 | 39 | // accessors |
duke@435 | 40 | methodOop holder_method() const { return _holder_method; } |
duke@435 | 41 | klassOop holder_klass() const { return _holder_klass; } |
duke@435 | 42 | |
duke@435 | 43 | void set_holder_method(methodOop m) { oop_store_without_check((oop*)&_holder_method, (oop)m); } |
duke@435 | 44 | void set_holder_klass(klassOop k) { oop_store_without_check((oop*)&_holder_klass, (oop)k); } |
duke@435 | 45 | |
duke@435 | 46 | static int header_size() { return sizeof(compiledICHolderOopDesc)/HeapWordSize; } |
duke@435 | 47 | static int object_size() { return align_object_size(header_size()); } |
duke@435 | 48 | |
duke@435 | 49 | // interpreter support (offsets in bytes) |
duke@435 | 50 | static int holder_method_offset() { return offset_of(compiledICHolderOopDesc, _holder_method); } |
duke@435 | 51 | static int holder_klass_offset() { return offset_of(compiledICHolderOopDesc, _holder_klass); } |
duke@435 | 52 | |
duke@435 | 53 | // GC support |
duke@435 | 54 | oop* adr_holder_method() const { return (oop*)&_holder_method; } |
duke@435 | 55 | oop* adr_holder_klass() const { return (oop*)&_holder_klass; } |
duke@435 | 56 | }; |