Mercurial > hg > truffle
annotate src/share/vm/runtime/reflectionUtils.cpp @ 1721:413ad0331a0c
6977924: Changes for 6975078 produce build error with certain gcc versions
Summary: The changes introduced for 6975078 assign badHeapOopVal to the _allocation field in the ResourceObj class. In 32 bit linux builds with certain versions of gcc this assignment will be flagged as an error while compiling allocation.cpp. In 32 bit builds the constant value badHeapOopVal (which is cast to an intptr_t) is negative. The _allocation field is typed as an unsigned intptr_t and gcc catches this as an error.
Reviewed-by: jcoomes, ysr, phh
| author | johnc |
|---|---|
| date | Wed, 18 Aug 2010 10:59:06 -0700 |
| parents | c18cbe5936b8 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1999, 2006, Oracle and/or its affiliates. All rights reserved. |
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| 5 * This code is free software; you can redistribute it and/or modify it | |
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| 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 | |
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| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_reflectionUtils.cpp.incl" | |
| 27 | |
| 28 KlassStream::KlassStream(instanceKlassHandle klass, bool local_only, bool classes_only) { | |
| 29 _klass = klass; | |
| 30 if (classes_only) { | |
| 31 _interfaces = Universe::the_empty_system_obj_array(); | |
| 32 } else { | |
| 33 _interfaces = klass->transitive_interfaces(); | |
| 34 } | |
| 35 _interface_index = _interfaces->length(); | |
| 36 _local_only = local_only; | |
| 37 _classes_only = classes_only; | |
| 38 } | |
| 39 | |
| 40 bool KlassStream::eos() { | |
| 41 if (index() >= 0) return false; | |
| 42 if (_local_only) return true; | |
| 43 if (!_klass->is_interface() && _klass->super() != NULL) { | |
| 44 // go up superclass chain (not for interfaces) | |
| 45 _klass = _klass->super(); | |
| 46 } else { | |
| 47 if (_interface_index > 0) { | |
| 48 _klass = klassOop(_interfaces->obj_at(--_interface_index)); | |
| 49 } else { | |
| 50 return true; | |
| 51 } | |
| 52 } | |
| 53 _index = length(); | |
| 54 next(); | |
| 55 return eos(); | |
| 56 } | |
| 57 | |
| 58 | |
| 59 GrowableArray<FilteredField*> *FilteredFieldsMap::_filtered_fields = | |
| 60 new (ResourceObj::C_HEAP) GrowableArray<FilteredField*>(3,true); | |
| 61 | |
| 62 | |
| 63 void FilteredFieldsMap::initialize() { | |
| 64 int offset; | |
| 65 offset = java_lang_Throwable::get_backtrace_offset(); | |
| 1142 | 66 _filtered_fields->append(new FilteredField(SystemDictionary::Throwable_klass(), offset)); |
| 0 | 67 // The latest version of vm may be used with old jdk. |
| 68 if (JDK_Version::is_gte_jdk16x_version()) { | |
| 69 // The following class fields do not exist in | |
| 70 // previous version of jdk. | |
| 71 offset = sun_reflect_ConstantPool::cp_oop_offset(); | |
| 1142 | 72 _filtered_fields->append(new FilteredField(SystemDictionary::reflect_ConstantPool_klass(), offset)); |
| 0 | 73 offset = sun_reflect_UnsafeStaticFieldAccessorImpl::base_offset(); |
| 1142 | 74 _filtered_fields->append(new FilteredField(SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass(), offset)); |
| 0 | 75 } |
| 76 } | |
| 77 | |
| 78 int FilteredFieldStream::field_count() { | |
| 79 int numflds = 0; | |
| 80 for (;!eos(); next()) { | |
| 81 numflds++; | |
| 82 } | |
| 83 return numflds; | |
| 84 } |