author | dnsimon |
Fri, 05 Oct 2018 20:03:14 +0200 | |
changeset 52033 | d6aa9ea2405d |
parent 50882 | 80abf702eed8 |
child 52619 | 5b4242996d8c |
permissions | -rw-r--r-- |
1 | 1 |
/* |
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* Copyright (c) 1997, 2018, 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/moduleEntry.hpp" |
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#include "classfile/packageEntry.hpp" |
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#include "classfile/symbolTable.hpp" |
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#include "classfile/systemDictionary.hpp" |
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#include "classfile/vmSymbols.hpp" |
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#include "gc/shared/collectedHeap.hpp" |
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#include "gc/shared/collectedHeap.inline.hpp" |
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#include "memory/metadataFactory.hpp" |
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#include "memory/resourceArea.hpp" |
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#include "memory/universe.hpp" |
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#include "memory/universe.hpp" |
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#include "oops/arrayKlass.inline.hpp" |
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#include "oops/instanceKlass.hpp" |
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#include "oops/klass.inline.hpp" |
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#include "oops/objArrayKlass.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "oops/typeArrayKlass.inline.hpp" |
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#include "oops/typeArrayOop.inline.hpp" |
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#include "runtime/handles.inline.hpp" |
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#include "utilities/macros.hpp" |
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bool TypeArrayKlass::compute_is_subtype_of(Klass* k) { |
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if (!k->is_typeArray_klass()) { |
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return ArrayKlass::compute_is_subtype_of(k); |
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} |
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TypeArrayKlass* tak = TypeArrayKlass::cast(k); |
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if (dimension() != tak->dimension()) return false; |
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return element_type() == tak->element_type(); |
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} |
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TypeArrayKlass* TypeArrayKlass::create_klass(BasicType type, |
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const char* name_str, TRAPS) { |
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Symbol* sym = NULL; |
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if (name_str != NULL) { |
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sym = SymbolTable::new_permanent_symbol(name_str, CHECK_NULL); |
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} |
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ClassLoaderData* null_loader_data = ClassLoaderData::the_null_class_loader_data(); |
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TypeArrayKlass* ak = TypeArrayKlass::allocate(null_loader_data, type, sym, CHECK_NULL); |
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// Add all classes to our internal class loader list here, |
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// including classes in the bootstrap (NULL) class loader. |
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// GC walks these as strong roots. |
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null_loader_data->add_class(ak); |
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// Call complete_create_array_klass after all instance variables have been initialized. |
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complete_create_array_klass(ak, ak->super(), ModuleEntryTable::javabase_moduleEntry(), CHECK_NULL); |
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return ak; |
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} |
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TypeArrayKlass* TypeArrayKlass::allocate(ClassLoaderData* loader_data, BasicType type, Symbol* name, TRAPS) { |
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assert(TypeArrayKlass::header_size() <= InstanceKlass::header_size(), |
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"array klasses must be same size as InstanceKlass"); |
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int size = ArrayKlass::static_size(TypeArrayKlass::header_size()); |
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return new (loader_data, size, THREAD) TypeArrayKlass(type, name); |
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} |
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TypeArrayKlass::TypeArrayKlass(BasicType type, Symbol* name) : ArrayKlass(name, ID) { |
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set_layout_helper(array_layout_helper(type)); |
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assert(is_array_klass(), "sanity"); |
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assert(is_typeArray_klass(), "sanity"); |
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set_max_length(arrayOopDesc::max_array_length(type)); |
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assert(size() >= TypeArrayKlass::header_size(), "bad size"); |
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set_class_loader_data(ClassLoaderData::the_null_class_loader_data()); |
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} |
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typeArrayOop TypeArrayKlass::allocate_common(int length, bool do_zero, TRAPS) { |
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assert(log2_element_size() >= 0, "bad scale"); |
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check_array_allocation_length(length, max_length(), CHECK_NULL); |
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size_t size = typeArrayOopDesc::object_size(layout_helper(), length); |
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return (typeArrayOop)Universe::heap()->array_allocate(this, (int)size, length, |
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do_zero, CHECK_NULL); |
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} |
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oop TypeArrayKlass::multi_allocate(int rank, jint* last_size, TRAPS) { |
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// For typeArrays this is only called for the last dimension |
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assert(rank == 1, "just checking"); |
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int length = *last_size; |
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return allocate(length, THREAD); |
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} |
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void TypeArrayKlass::copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS) { |
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assert(s->is_typeArray(), "must be type array"); |
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// Check destination type. |
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if (!d->is_typeArray()) { |
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ResourceMark rm(THREAD); |
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stringStream ss; |
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if (d->is_objArray()) { |
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ss.print("arraycopy: type mismatch: can not copy %s[] into object array[]", |
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type2name_tab[ArrayKlass::cast(s->klass())->element_type()]); |
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} else { |
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ss.print("arraycopy: destination type %s is not an array", d->klass()->external_name()); |
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} |
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THROW_MSG(vmSymbols::java_lang_ArrayStoreException(), ss.as_string()); |
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} |
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if (element_type() != TypeArrayKlass::cast(d->klass())->element_type()) { |
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ResourceMark rm(THREAD); |
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stringStream ss; |
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ss.print("arraycopy: type mismatch: can not copy %s[] into %s[]", |
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type2name_tab[ArrayKlass::cast(s->klass())->element_type()], |
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type2name_tab[ArrayKlass::cast(d->klass())->element_type()]); |
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THROW_MSG(vmSymbols::java_lang_ArrayStoreException(), ss.as_string()); |
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1 | 138 |
} |
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// Check if all offsets and lengths are non negative. |
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if (src_pos < 0 || dst_pos < 0 || length < 0) { |
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// Pass specific exception reason. |
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ResourceMark rm(THREAD); |
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stringStream ss; |
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if (src_pos < 0) { |
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ss.print("arraycopy: source index %d out of bounds for %s[%d]", |
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src_pos, type2name_tab[ArrayKlass::cast(s->klass())->element_type()], s->length()); |
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} else if (dst_pos < 0) { |
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ss.print("arraycopy: destination index %d out of bounds for %s[%d]", |
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dst_pos, type2name_tab[ArrayKlass::cast(d->klass())->element_type()], d->length()); |
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} else { |
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ss.print("arraycopy: length %d is negative", length); |
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} |
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THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), ss.as_string()); |
1 | 155 |
} |
156 |
// Check if the ranges are valid |
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if ((((unsigned int) length + (unsigned int) src_pos) > (unsigned int) s->length()) || |
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(((unsigned int) length + (unsigned int) dst_pos) > (unsigned int) d->length())) { |
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// Pass specific exception reason. |
50601 | 160 |
ResourceMark rm(THREAD); |
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stringStream ss; |
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if (((unsigned int) length + (unsigned int) src_pos) > (unsigned int) s->length()) { |
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ss.print("arraycopy: last source index %u out of bounds for %s[%d]", |
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(unsigned int) length + (unsigned int) src_pos, |
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type2name_tab[ArrayKlass::cast(s->klass())->element_type()], s->length()); |
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166 |
} else { |
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ss.print("arraycopy: last destination index %u out of bounds for %s[%d]", |
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(unsigned int) length + (unsigned int) dst_pos, |
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type2name_tab[ArrayKlass::cast(d->klass())->element_type()], d->length()); |
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170 |
} |
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171 |
THROW_MSG(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), ss.as_string()); |
1 | 172 |
} |
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// Check zero copy |
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if (length == 0) |
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175 |
return; |
1 | 176 |
|
177 |
// This is an attempt to make the copy_array fast. |
|
178 |
int l2es = log2_element_size(); |
|
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size_t src_offset = arrayOopDesc::base_offset_in_bytes(element_type()) + ((size_t)src_pos << l2es); |
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size_t dst_offset = arrayOopDesc::base_offset_in_bytes(element_type()) + ((size_t)dst_pos << l2es); |
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ArrayAccess<ARRAYCOPY_ATOMIC>::arraycopy<void>(s, src_offset, d, dst_offset, (size_t)length << l2es); |
1 | 182 |
} |
183 |
||
184 |
// create a klass of array holding typeArrays |
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Klass* TypeArrayKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
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int dim = dimension(); |
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assert(dim <= n, "check order of chain"); |
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if (dim == n) |
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return this; |
1 | 190 |
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// lock-free read needs acquire semantics |
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if (higher_dimension_acquire() == NULL) { |
1 | 193 |
if (or_null) return NULL; |
194 |
||
195 |
ResourceMark rm; |
|
196 |
JavaThread *jt = (JavaThread *)THREAD; |
|
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{ |
|
198 |
MutexLocker mc(Compile_lock, THREAD); // for vtables |
|
199 |
// Atomic create higher dimension and link into list |
|
200 |
MutexLocker mu(MultiArray_lock, THREAD); |
|
201 |
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if (higher_dimension() == NULL) { |
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Klass* oak = ObjArrayKlass::allocate_objArray_klass( |
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class_loader_data(), dim + 1, this, CHECK_NULL); |
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ObjArrayKlass* h_ak = ObjArrayKlass::cast(oak); |
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h_ak->set_lower_dimension(this); |
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// use 'release' to pair with lock-free load |
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release_set_higher_dimension(h_ak); |
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assert(h_ak->is_objArray_klass(), "incorrect initialization of ObjArrayKlass"); |
1 | 210 |
} |
211 |
} |
|
212 |
} else { |
|
213 |
CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
|
214 |
} |
|
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ObjArrayKlass* h_ak = ObjArrayKlass::cast(higher_dimension()); |
1 | 216 |
if (or_null) { |
217 |
return h_ak->array_klass_or_null(n); |
|
218 |
} |
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return h_ak->array_klass(n, THREAD); |
1 | 220 |
} |
221 |
||
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Klass* TypeArrayKlass::array_klass_impl(bool or_null, TRAPS) { |
1 | 223 |
return array_klass_impl(or_null, dimension() + 1, THREAD); |
224 |
} |
|
225 |
||
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int TypeArrayKlass::oop_size(oop obj) const { |
1 | 227 |
assert(obj->is_typeArray(),"must be a type array"); |
228 |
typeArrayOop t = typeArrayOop(obj); |
|
229 |
return t->object_size(); |
|
230 |
} |
|
231 |
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void TypeArrayKlass::initialize(TRAPS) { |
1 | 233 |
// Nothing to do. Having this function is handy since objArrayKlasses can be |
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// initialized by calling initialize on their bottom_klass, see ObjArrayKlass::initialize |
1 | 235 |
} |
236 |
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const char* TypeArrayKlass::external_name(BasicType type) { |
1 | 238 |
switch (type) { |
239 |
case T_BOOLEAN: return "[Z"; |
|
240 |
case T_CHAR: return "[C"; |
|
241 |
case T_FLOAT: return "[F"; |
|
242 |
case T_DOUBLE: return "[D"; |
|
243 |
case T_BYTE: return "[B"; |
|
244 |
case T_SHORT: return "[S"; |
|
245 |
case T_INT: return "[I"; |
|
246 |
case T_LONG: return "[J"; |
|
247 |
default: ShouldNotReachHere(); |
|
248 |
} |
|
249 |
return NULL; |
|
250 |
} |
|
251 |
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252 |
|
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253 |
// Printing |
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254 |
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|
255 |
void TypeArrayKlass::print_on(outputStream* st) const { |
1 | 256 |
#ifndef PRODUCT |
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assert(is_klass(), "must be klass"); |
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print_value_on(st); |
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Klass::print_on(st); |
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#endif //PRODUCT |
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|
261 |
} |
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|
262 |
|
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|
263 |
void TypeArrayKlass::print_value_on(outputStream* st) const { |
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assert(is_klass(), "must be klass"); |
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|
265 |
st->print("{type array "); |
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|
266 |
BasicType bt = element_type(); |
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|
267 |
if (bt == T_BOOLEAN) { |
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|
268 |
st->print("bool"); |
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|
269 |
} else { |
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|
270 |
st->print("%s", type2name_tab[bt]); |
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271 |
} |
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|
272 |
st->print("}"); |
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|
273 |
} |
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|
274 |
|
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275 |
#ifndef PRODUCT |
1 | 276 |
|
277 |
static void print_boolean_array(typeArrayOop ta, int print_len, outputStream* st) { |
|
278 |
for (int index = 0; index < print_len; index++) { |
|
279 |
st->print_cr(" - %3d: %s", index, (ta->bool_at(index) == 0) ? "false" : "true"); |
|
280 |
} |
|
281 |
} |
|
282 |
||
283 |
||
284 |
static void print_char_array(typeArrayOop ta, int print_len, outputStream* st) { |
|
285 |
for (int index = 0; index < print_len; index++) { |
|
286 |
jchar c = ta->char_at(index); |
|
287 |
st->print_cr(" - %3d: %x %c", index, c, isprint(c) ? c : ' '); |
|
288 |
} |
|
289 |
} |
|
290 |
||
291 |
||
292 |
static void print_float_array(typeArrayOop ta, int print_len, outputStream* st) { |
|
293 |
for (int index = 0; index < print_len; index++) { |
|
294 |
st->print_cr(" - %3d: %g", index, ta->float_at(index)); |
|
295 |
} |
|
296 |
} |
|
297 |
||
298 |
||
299 |
static void print_double_array(typeArrayOop ta, int print_len, outputStream* st) { |
|
300 |
for (int index = 0; index < print_len; index++) { |
|
301 |
st->print_cr(" - %3d: %g", index, ta->double_at(index)); |
|
302 |
} |
|
303 |
} |
|
304 |
||
305 |
||
306 |
static void print_byte_array(typeArrayOop ta, int print_len, outputStream* st) { |
|
307 |
for (int index = 0; index < print_len; index++) { |
|
308 |
jbyte c = ta->byte_at(index); |
|
309 |
st->print_cr(" - %3d: %x %c", index, c, isprint(c) ? c : ' '); |
|
310 |
} |
|
311 |
} |
|
312 |
||
313 |
||
314 |
static void print_short_array(typeArrayOop ta, int print_len, outputStream* st) { |
|
315 |
for (int index = 0; index < print_len; index++) { |
|
316 |
int v = ta->ushort_at(index); |
|
317 |
st->print_cr(" - %3d: 0x%x\t %d", index, v, v); |
|
318 |
} |
|
319 |
} |
|
320 |
||
321 |
||
322 |
static void print_int_array(typeArrayOop ta, int print_len, outputStream* st) { |
|
323 |
for (int index = 0; index < print_len; index++) { |
|
324 |
jint v = ta->int_at(index); |
|
325 |
st->print_cr(" - %3d: 0x%x %d", index, v, v); |
|
326 |
} |
|
327 |
} |
|
328 |
||
329 |
||
330 |
static void print_long_array(typeArrayOop ta, int print_len, outputStream* st) { |
|
331 |
for (int index = 0; index < print_len; index++) { |
|
332 |
jlong v = ta->long_at(index); |
|
333 |
st->print_cr(" - %3d: 0x%x 0x%x", index, high(v), low(v)); |
|
334 |
} |
|
335 |
} |
|
336 |
||
337 |
||
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|
338 |
void TypeArrayKlass::oop_print_on(oop obj, outputStream* st) { |
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|
339 |
ArrayKlass::oop_print_on(obj, st); |
1 | 340 |
typeArrayOop ta = typeArrayOop(obj); |
341 |
int print_len = MIN2((intx) ta->length(), MaxElementPrintSize); |
|
342 |
switch (element_type()) { |
|
343 |
case T_BOOLEAN: print_boolean_array(ta, print_len, st); break; |
|
344 |
case T_CHAR: print_char_array(ta, print_len, st); break; |
|
345 |
case T_FLOAT: print_float_array(ta, print_len, st); break; |
|
346 |
case T_DOUBLE: print_double_array(ta, print_len, st); break; |
|
347 |
case T_BYTE: print_byte_array(ta, print_len, st); break; |
|
348 |
case T_SHORT: print_short_array(ta, print_len, st); break; |
|
349 |
case T_INT: print_int_array(ta, print_len, st); break; |
|
350 |
case T_LONG: print_long_array(ta, print_len, st); break; |
|
351 |
default: ShouldNotReachHere(); |
|
352 |
} |
|
353 |
int remaining = ta->length() - print_len; |
|
354 |
if (remaining > 0) { |
|
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|
355 |
st->print_cr(" - <%d more elements, increase MaxElementPrintSize to print>", remaining); |
1 | 356 |
} |
357 |
} |
|
358 |
||
359 |
#endif // PRODUCT |
|
360 |
||
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|
361 |
const char* TypeArrayKlass::internal_name() const { |
1 | 362 |
return Klass::external_name(); |
363 |
} |
|
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|
364 |
|
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|
365 |
// A TypeArrayKlass is an array of a primitive type, its defining module is java.base |
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|
366 |
ModuleEntry* TypeArrayKlass::module() const { |
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|
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return ModuleEntryTable::javabase_moduleEntry(); |
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|
368 |
} |
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|
369 |
|
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|
370 |
PackageEntry* TypeArrayKlass::package() const { |
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|
371 |
return NULL; |
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|
372 |
} |