Mon, 30 Jun 2008 17:04:59 -0700
6618726: Introduce -XX:+UnlockExperimentalVMOptions flag
Summary: experimental() flags will protect features of an experimental nature that are not supported in the regular product build. Made UseG1GC an experimental flag.
Reviewed-by: jmasa, kamg, coleenp
duke@435 | 1 | /* |
duke@435 | 2 | * Copyright 1997-2005 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 fieldDescriptor describes the attributes of a single field (instance or class variable). |
duke@435 | 26 | // It needs the class constant pool to work (because it only holds indices into the pool |
duke@435 | 27 | // rather than the actual info). |
duke@435 | 28 | |
duke@435 | 29 | class fieldDescriptor VALUE_OBJ_CLASS_SPEC { |
duke@435 | 30 | private: |
duke@435 | 31 | AccessFlags _access_flags; |
duke@435 | 32 | int _name_index; |
duke@435 | 33 | int _signature_index; |
duke@435 | 34 | int _initial_value_index; |
duke@435 | 35 | int _offset; |
duke@435 | 36 | int _generic_signature_index; |
duke@435 | 37 | int _index; // index into fields() array |
duke@435 | 38 | constantPoolHandle _cp; |
duke@435 | 39 | |
duke@435 | 40 | public: |
duke@435 | 41 | symbolOop name() const { return _cp->symbol_at(_name_index); } |
duke@435 | 42 | symbolOop signature() const { return _cp->symbol_at(_signature_index); } |
duke@435 | 43 | klassOop field_holder() const { return _cp->pool_holder(); } |
duke@435 | 44 | constantPoolOop constants() const { return _cp(); } |
duke@435 | 45 | AccessFlags access_flags() const { return _access_flags; } |
duke@435 | 46 | oop loader() const; |
duke@435 | 47 | // Offset (in words) of field from start of instanceOop / klassOop |
duke@435 | 48 | int offset() const { return _offset; } |
duke@435 | 49 | symbolOop generic_signature() const { return (_generic_signature_index > 0 ? _cp->symbol_at(_generic_signature_index) : (symbolOop)NULL); } |
duke@435 | 50 | int index() const { return _index; } |
duke@435 | 51 | typeArrayOop annotations() const; |
duke@435 | 52 | |
duke@435 | 53 | // Initial field value |
duke@435 | 54 | bool has_initial_value() const { return _initial_value_index != 0; } |
duke@435 | 55 | constantTag initial_value_tag() const; // The tag will return true on one of is_int(), is_long(), is_single(), is_double() |
duke@435 | 56 | jint int_initial_value() const; |
duke@435 | 57 | jlong long_initial_value() const; |
duke@435 | 58 | jfloat float_initial_value() const; |
duke@435 | 59 | jdouble double_initial_value() const; |
duke@435 | 60 | oop string_initial_value(TRAPS) const; |
duke@435 | 61 | |
duke@435 | 62 | // Field signature type |
duke@435 | 63 | BasicType field_type() const { return FieldType::basic_type(signature()); } |
duke@435 | 64 | |
duke@435 | 65 | // Access flags |
duke@435 | 66 | bool is_public() const { return _access_flags.is_public(); } |
duke@435 | 67 | bool is_private() const { return _access_flags.is_private(); } |
duke@435 | 68 | bool is_protected() const { return _access_flags.is_protected(); } |
duke@435 | 69 | bool is_package_private() const { return !is_public() && !is_private() && !is_protected(); } |
duke@435 | 70 | |
duke@435 | 71 | bool is_static() const { return _access_flags.is_static(); } |
duke@435 | 72 | bool is_final() const { return _access_flags.is_final(); } |
duke@435 | 73 | bool is_volatile() const { return _access_flags.is_volatile(); } |
duke@435 | 74 | bool is_transient() const { return _access_flags.is_transient(); } |
duke@435 | 75 | |
duke@435 | 76 | bool is_synthetic() const { return _access_flags.is_synthetic(); } |
duke@435 | 77 | |
duke@435 | 78 | bool is_field_access_watched() const { return _access_flags.is_field_access_watched(); } |
duke@435 | 79 | bool is_field_modification_watched() const |
duke@435 | 80 | { return _access_flags.is_field_modification_watched(); } |
duke@435 | 81 | void set_is_field_access_watched(const bool value) |
duke@435 | 82 | { _access_flags.set_is_field_access_watched(value); } |
duke@435 | 83 | void set_is_field_modification_watched(const bool value) |
duke@435 | 84 | { _access_flags.set_is_field_modification_watched(value); } |
duke@435 | 85 | |
duke@435 | 86 | // Initialization |
duke@435 | 87 | void initialize(klassOop k, int index); |
duke@435 | 88 | |
duke@435 | 89 | |
duke@435 | 90 | void print_on(outputStream* st) const PRODUCT_RETURN; |
duke@435 | 91 | void print_on_for(outputStream* st, oop obj) PRODUCT_RETURN; |
duke@435 | 92 | }; |