author | jiangli |
Fri, 22 Jun 2012 14:00:39 -0400 | |
changeset 13101 | 67539edd246d |
parent 12772 | d317e5e08194 |
child 13728 | 882756847a04 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#include "precompiled.hpp" |
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#include "classfile/systemDictionary.hpp" |
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#include "classfile/vmSymbols.hpp" |
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#include "memory/resourceArea.hpp" |
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#include "memory/universe.inline.hpp" |
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#include "oops/instanceKlass.hpp" |
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#include "oops/fieldStreams.hpp" |
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#include "runtime/fieldDescriptor.hpp" |
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#include "runtime/handles.inline.hpp" |
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#include "runtime/signature.hpp" |
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oop fieldDescriptor::loader() const { |
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return instanceKlass::cast(_cp->pool_holder())->class_loader(); |
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} |
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||
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Symbol* fieldDescriptor::generic_signature() const { |
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if (!has_generic_signature()) { |
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return NULL; |
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} |
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int idx = 0; |
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instanceKlass* ik = instanceKlass::cast(field_holder()); |
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for (AllFieldStream fs(ik); !fs.done(); fs.next()) { |
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if (idx == _index) { |
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return fs.generic_signature(); |
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} else { |
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idx ++; |
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} |
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} |
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assert(false, "should never happen"); |
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return NULL; |
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} |
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typeArrayOop fieldDescriptor::annotations() const { |
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instanceKlass* ik = instanceKlass::cast(field_holder()); |
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objArrayOop md = ik->fields_annotations(); |
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if (md == NULL) |
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return NULL; |
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return typeArrayOop(md->obj_at(index())); |
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} |
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constantTag fieldDescriptor::initial_value_tag() const { |
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return constants()->tag_at(initial_value_index()); |
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} |
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jint fieldDescriptor::int_initial_value() const { |
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return constants()->int_at(initial_value_index()); |
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} |
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jlong fieldDescriptor::long_initial_value() const { |
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return constants()->long_at(initial_value_index()); |
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} |
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jfloat fieldDescriptor::float_initial_value() const { |
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return constants()->float_at(initial_value_index()); |
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} |
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jdouble fieldDescriptor::double_initial_value() const { |
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return constants()->double_at(initial_value_index()); |
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} |
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oop fieldDescriptor::string_initial_value(TRAPS) const { |
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return constants()->string_at(initial_value_index(), CHECK_0); |
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} |
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void fieldDescriptor::initialize(klassOop k, int index) { |
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instanceKlass* ik = instanceKlass::cast(k); |
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_cp = ik->constants(); |
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FieldInfo* f = ik->field(index); |
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assert(!f->is_internal(), "regular Java fields only"); |
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_access_flags = accessFlags_from(f->access_flags()); |
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guarantee(f->name_index() != 0 && f->signature_index() != 0, "bad constant pool index for fieldDescriptor"); |
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_index = index; |
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} |
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#ifndef PRODUCT |
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void fieldDescriptor::print_on(outputStream* st) const { |
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access_flags().print_on(st); |
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name()->print_value_on(st); |
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st->print(" "); |
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signature()->print_value_on(st); |
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st->print(" @%d ", offset()); |
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if (WizardMode && has_initial_value()) { |
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st->print("(initval "); |
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constantTag t = initial_value_tag(); |
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if (t.is_int()) { |
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st->print("int %d)", int_initial_value()); |
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} else if (t.is_long()){ |
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st->print_jlong(long_initial_value()); |
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} else if (t.is_float()){ |
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st->print("float %f)", float_initial_value()); |
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} else if (t.is_double()){ |
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st->print("double %lf)", double_initial_value()); |
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} |
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} |
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} |
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void fieldDescriptor::print_on_for(outputStream* st, oop obj) { |
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print_on(st); |
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BasicType ft = field_type(); |
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jint as_int = 0; |
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switch (ft) { |
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case T_BYTE: |
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as_int = (jint)obj->byte_field(offset()); |
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st->print(" %d", obj->byte_field(offset())); |
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break; |
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case T_CHAR: |
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as_int = (jint)obj->char_field(offset()); |
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{ |
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jchar c = obj->char_field(offset()); |
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as_int = c; |
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st->print(" %c %d", isprint(c) ? c : ' ', c); |
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} |
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break; |
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case T_DOUBLE: |
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st->print(" %lf", obj->double_field(offset())); |
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break; |
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case T_FLOAT: |
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as_int = obj->int_field(offset()); |
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st->print(" %f", obj->float_field(offset())); |
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break; |
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case T_INT: |
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as_int = obj->int_field(offset()); |
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st->print(" %d", obj->int_field(offset())); |
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break; |
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case T_LONG: |
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st->print(" "); |
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st->print_jlong(obj->long_field(offset())); |
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break; |
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case T_SHORT: |
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as_int = obj->short_field(offset()); |
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st->print(" %d", obj->short_field(offset())); |
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break; |
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case T_BOOLEAN: |
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as_int = obj->bool_field(offset()); |
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st->print(" %s", obj->bool_field(offset()) ? "true" : "false"); |
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break; |
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case T_ARRAY: |
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st->print(" "); |
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NOT_LP64(as_int = obj->int_field(offset())); |
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obj->obj_field(offset())->print_value_on(st); |
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break; |
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case T_OBJECT: |
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st->print(" "); |
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NOT_LP64(as_int = obj->int_field(offset())); |
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obj->obj_field(offset())->print_value_on(st); |
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break; |
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default: |
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ShouldNotReachHere(); |
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break; |
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} |
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// Print a hint as to the underlying integer representation. This can be wrong for |
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// pointers on an LP64 machine |
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if (ft == T_LONG || ft == T_DOUBLE LP64_ONLY(|| !is_java_primitive(ft)) ) { |
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st->print(" (%x %x)", obj->int_field(offset()), obj->int_field(offset()+sizeof(jint))); |
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} else if (as_int < 0 || as_int > 9) { |
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st->print(" (%x)", as_int); |
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} |
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} |
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#endif /* PRODUCT */ |