Mercurial > hg > graal-compiler
view src/share/vm/ci/ciInstance.cpp @ 14470:f6490a5f084a
8033440: jmap reports unexpected used/free size of concurrent mark-sweep generation
Summary: SA used the wrong type for the indexedFreeList in CompactibleFreeListSpace.
Reviewed-by: coleenp, dsamersoff
author | sjohanss |
---|---|
date | Mon, 17 Feb 2014 09:51:37 +0100 |
parents | de6a9e811145 |
children | 4ca6dc0799b6 |
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/* * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "ci/ciConstant.hpp" #include "ci/ciField.hpp" #include "ci/ciInstance.hpp" #include "ci/ciInstanceKlass.hpp" #include "ci/ciUtilities.hpp" #include "classfile/systemDictionary.hpp" #include "oops/oop.inline.hpp" // ciInstance // // This class represents an instanceOop in the HotSpot virtual // machine. // ------------------------------------------------------------------ // ciObject::java_mirror_type ciType* ciInstance::java_mirror_type() { VM_ENTRY_MARK; oop m = get_oop(); // Return NULL if it is not java.lang.Class. if (m == NULL || m->klass() != SystemDictionary::Class_klass()) { return NULL; } // Return either a primitive type or a klass. if (java_lang_Class::is_primitive(m)) { return ciType::make(java_lang_Class::primitive_type(m)); } else { Klass* k = java_lang_Class::as_Klass(m); assert(k != NULL, ""); return CURRENT_THREAD_ENV->get_klass(k); } } // ------------------------------------------------------------------ // ciInstance::field_value // // Constant value of a field. ciConstant ciInstance::field_value(ciField* field) { assert(is_loaded(), "invalid access - must be loaded"); assert(field->holder()->is_loaded(), "invalid access - holder must be loaded"); assert(klass()->is_subclass_of(field->holder()), "invalid access - must be subclass"); VM_ENTRY_MARK; ciConstant result; Handle obj = get_oop(); assert(!obj.is_null(), "bad oop"); BasicType field_btype = field->type()->basic_type(); int offset = field->offset(); switch(field_btype) { case T_BYTE: return ciConstant(field_btype, obj->byte_field(offset)); break; case T_CHAR: return ciConstant(field_btype, obj->char_field(offset)); break; case T_SHORT: return ciConstant(field_btype, obj->short_field(offset)); break; case T_BOOLEAN: return ciConstant(field_btype, obj->bool_field(offset)); break; case T_INT: return ciConstant(field_btype, obj->int_field(offset)); break; case T_FLOAT: return ciConstant(obj->float_field(offset)); break; case T_DOUBLE: return ciConstant(obj->double_field(offset)); break; case T_LONG: return ciConstant(obj->long_field(offset)); break; case T_OBJECT: case T_ARRAY: { oop o = obj->obj_field(offset); // A field will be "constant" if it is known always to be // a non-null reference to an instance of a particular class, // or to a particular array. This can happen even if the instance // or array is not perm. In such a case, an "unloaded" ciArray // or ciInstance is created. The compiler may be able to use // information about the object's class (which is exact) or length. if (o == NULL) { return ciConstant(field_btype, ciNullObject::make()); } else { return ciConstant(field_btype, CURRENT_ENV->get_object(o)); } } } ShouldNotReachHere(); // to shut up the compiler return ciConstant(); } // ------------------------------------------------------------------ // ciInstance::field_value_by_offset // // Constant value of a field at the specified offset. ciConstant ciInstance::field_value_by_offset(int field_offset) { ciInstanceKlass* ik = klass()->as_instance_klass(); ciField* field = ik->get_field_by_offset(field_offset, false); if (field == NULL) return ciConstant(); // T_ILLEGAL return field_value(field); } // ------------------------------------------------------------------ // ciInstance::print_impl // // Implementation of the print method. void ciInstance::print_impl(outputStream* st) { st->print(" type="); klass()->print(st); } ciKlass* ciInstance::java_lang_Class_klass() { VM_ENTRY_MARK; return CURRENT_ENV->get_metadata(java_lang_Class::as_Klass(get_oop()))->as_klass(); }