| /* |
| * Copyright (c) 1997, 2017, 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 "classfile/moduleEntry.hpp" |
| #include "classfile/packageEntry.hpp" |
| #include "classfile/symbolTable.hpp" |
| #include "classfile/systemDictionary.hpp" |
| #include "classfile/vmSymbols.hpp" |
| #include "gc/shared/collectedHeap.hpp" |
| #include "gc/shared/collectedHeap.inline.hpp" |
| #include "memory/metadataFactory.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "memory/universe.hpp" |
| #include "memory/universe.inline.hpp" |
| #include "oops/arrayKlass.inline.hpp" |
| #include "oops/instanceKlass.hpp" |
| #include "oops/klass.inline.hpp" |
| #include "oops/objArrayKlass.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "oops/typeArrayKlass.inline.hpp" |
| #include "oops/typeArrayOop.inline.hpp" |
| #include "runtime/handles.inline.hpp" |
| #include "utilities/macros.hpp" |
| |
| bool TypeArrayKlass::compute_is_subtype_of(Klass* k) { |
| if (!k->is_typeArray_klass()) { |
| return ArrayKlass::compute_is_subtype_of(k); |
| } |
| |
| TypeArrayKlass* tak = TypeArrayKlass::cast(k); |
| if (dimension() != tak->dimension()) return false; |
| |
| return element_type() == tak->element_type(); |
| } |
| |
| TypeArrayKlass* TypeArrayKlass::create_klass(BasicType type, |
| const char* name_str, TRAPS) { |
| Symbol* sym = NULL; |
| if (name_str != NULL) { |
| sym = SymbolTable::new_permanent_symbol(name_str, CHECK_NULL); |
| } |
| |
| ClassLoaderData* null_loader_data = ClassLoaderData::the_null_class_loader_data(); |
| |
| TypeArrayKlass* ak = TypeArrayKlass::allocate(null_loader_data, type, sym, CHECK_NULL); |
| |
| // Add all classes to our internal class loader list here, |
| // including classes in the bootstrap (NULL) class loader. |
| // GC walks these as strong roots. |
| null_loader_data->add_class(ak); |
| |
| // Call complete_create_array_klass after all instance variables have been initialized. |
| complete_create_array_klass(ak, ak->super(), ModuleEntryTable::javabase_moduleEntry(), CHECK_NULL); |
| |
| return ak; |
| } |
| |
| TypeArrayKlass* TypeArrayKlass::allocate(ClassLoaderData* loader_data, BasicType type, Symbol* name, TRAPS) { |
| assert(TypeArrayKlass::header_size() <= InstanceKlass::header_size(), |
| "array klasses must be same size as InstanceKlass"); |
| |
| int size = ArrayKlass::static_size(TypeArrayKlass::header_size()); |
| |
| return new (loader_data, size, THREAD) TypeArrayKlass(type, name); |
| } |
| |
| TypeArrayKlass::TypeArrayKlass(BasicType type, Symbol* name) : ArrayKlass(name) { |
| set_layout_helper(array_layout_helper(type)); |
| assert(is_array_klass(), "sanity"); |
| assert(is_typeArray_klass(), "sanity"); |
| |
| set_max_length(arrayOopDesc::max_array_length(type)); |
| assert(size() >= TypeArrayKlass::header_size(), "bad size"); |
| |
| set_class_loader_data(ClassLoaderData::the_null_class_loader_data()); |
| } |
| |
| typeArrayOop TypeArrayKlass::allocate_common(int length, bool do_zero, TRAPS) { |
| assert(log2_element_size() >= 0, "bad scale"); |
| if (length >= 0) { |
| if (length <= max_length()) { |
| size_t size = typeArrayOopDesc::object_size(layout_helper(), length); |
| typeArrayOop t; |
| CollectedHeap* ch = Universe::heap(); |
| if (do_zero) { |
| t = (typeArrayOop)CollectedHeap::array_allocate(this, (int)size, length, CHECK_NULL); |
| } else { |
| t = (typeArrayOop)CollectedHeap::array_allocate_nozero(this, (int)size, length, CHECK_NULL); |
| } |
| return t; |
| } else { |
| report_java_out_of_memory("Requested array size exceeds VM limit"); |
| JvmtiExport::post_array_size_exhausted(); |
| THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
| } |
| } else { |
| THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
| } |
| } |
| |
| oop TypeArrayKlass::multi_allocate(int rank, jint* last_size, TRAPS) { |
| // For typeArrays this is only called for the last dimension |
| assert(rank == 1, "just checking"); |
| int length = *last_size; |
| return allocate(length, THREAD); |
| } |
| |
| |
| void TypeArrayKlass::copy_array(arrayOop s, int src_pos, arrayOop d, int dst_pos, int length, TRAPS) { |
| assert(s->is_typeArray(), "must be type array"); |
| |
| // Check destination |
| if (!d->is_typeArray() || element_type() != TypeArrayKlass::cast(d->klass())->element_type()) { |
| THROW(vmSymbols::java_lang_ArrayStoreException()); |
| } |
| |
| // Check is all offsets and lengths are non negative |
| if (src_pos < 0 || dst_pos < 0 || length < 0) { |
| THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); |
| } |
| // Check if the ranges are valid |
| if ( (((unsigned int) length + (unsigned int) src_pos) > (unsigned int) s->length()) |
| || (((unsigned int) length + (unsigned int) dst_pos) > (unsigned int) d->length()) ) { |
| THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); |
| } |
| // Check zero copy |
| if (length == 0) |
| return; |
| |
| // This is an attempt to make the copy_array fast. |
| int l2es = log2_element_size(); |
| int ihs = array_header_in_bytes() / wordSize; |
| char* src = (char*) ((oop*)s + ihs) + ((size_t)src_pos << l2es); |
| char* dst = (char*) ((oop*)d + ihs) + ((size_t)dst_pos << l2es); |
| Copy::conjoint_memory_atomic(src, dst, (size_t)length << l2es); |
| } |
| |
| |
| // create a klass of array holding typeArrays |
| Klass* TypeArrayKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
| int dim = dimension(); |
| assert(dim <= n, "check order of chain"); |
| if (dim == n) |
| return this; |
| |
| // lock-free read needs acquire semantics |
| if (higher_dimension_acquire() == NULL) { |
| if (or_null) return NULL; |
| |
| ResourceMark rm; |
| JavaThread *jt = (JavaThread *)THREAD; |
| { |
| MutexLocker mc(Compile_lock, THREAD); // for vtables |
| // Atomic create higher dimension and link into list |
| MutexLocker mu(MultiArray_lock, THREAD); |
| |
| if (higher_dimension() == NULL) { |
| Klass* oak = ObjArrayKlass::allocate_objArray_klass( |
| class_loader_data(), dim + 1, this, CHECK_NULL); |
| ObjArrayKlass* h_ak = ObjArrayKlass::cast(oak); |
| h_ak->set_lower_dimension(this); |
| // use 'release' to pair with lock-free load |
| release_set_higher_dimension(h_ak); |
| assert(h_ak->is_objArray_klass(), "incorrect initialization of ObjArrayKlass"); |
| } |
| } |
| } else { |
| CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
| } |
| ObjArrayKlass* h_ak = ObjArrayKlass::cast(higher_dimension()); |
| if (or_null) { |
| return h_ak->array_klass_or_null(n); |
| } |
| return h_ak->array_klass(n, THREAD); |
| } |
| |
| Klass* TypeArrayKlass::array_klass_impl(bool or_null, TRAPS) { |
| return array_klass_impl(or_null, dimension() + 1, THREAD); |
| } |
| |
| int TypeArrayKlass::oop_size(oop obj) const { |
| assert(obj->is_typeArray(),"must be a type array"); |
| typeArrayOop t = typeArrayOop(obj); |
| return t->object_size(); |
| } |
| |
| void TypeArrayKlass::initialize(TRAPS) { |
| // Nothing to do. Having this function is handy since objArrayKlasses can be |
| // initialized by calling initialize on their bottom_klass, see ObjArrayKlass::initialize |
| } |
| |
| const char* TypeArrayKlass::external_name(BasicType type) { |
| switch (type) { |
| case T_BOOLEAN: return "[Z"; |
| case T_CHAR: return "[C"; |
| case T_FLOAT: return "[F"; |
| case T_DOUBLE: return "[D"; |
| case T_BYTE: return "[B"; |
| case T_SHORT: return "[S"; |
| case T_INT: return "[I"; |
| case T_LONG: return "[J"; |
| default: ShouldNotReachHere(); |
| } |
| return NULL; |
| } |
| |
| |
| // Printing |
| |
| void TypeArrayKlass::print_on(outputStream* st) const { |
| #ifndef PRODUCT |
| assert(is_klass(), "must be klass"); |
| print_value_on(st); |
| Klass::print_on(st); |
| #endif //PRODUCT |
| } |
| |
| void TypeArrayKlass::print_value_on(outputStream* st) const { |
| assert(is_klass(), "must be klass"); |
| st->print("{type array "); |
| switch (element_type()) { |
| case T_BOOLEAN: st->print("bool"); break; |
| case T_CHAR: st->print("char"); break; |
| case T_FLOAT: st->print("float"); break; |
| case T_DOUBLE: st->print("double"); break; |
| case T_BYTE: st->print("byte"); break; |
| case T_SHORT: st->print("short"); break; |
| case T_INT: st->print("int"); break; |
| case T_LONG: st->print("long"); break; |
| default: ShouldNotReachHere(); |
| } |
| st->print("}"); |
| } |
| |
| #ifndef PRODUCT |
| |
| static void print_boolean_array(typeArrayOop ta, int print_len, outputStream* st) { |
| for (int index = 0; index < print_len; index++) { |
| st->print_cr(" - %3d: %s", index, (ta->bool_at(index) == 0) ? "false" : "true"); |
| } |
| } |
| |
| |
| static void print_char_array(typeArrayOop ta, int print_len, outputStream* st) { |
| for (int index = 0; index < print_len; index++) { |
| jchar c = ta->char_at(index); |
| st->print_cr(" - %3d: %x %c", index, c, isprint(c) ? c : ' '); |
| } |
| } |
| |
| |
| static void print_float_array(typeArrayOop ta, int print_len, outputStream* st) { |
| for (int index = 0; index < print_len; index++) { |
| st->print_cr(" - %3d: %g", index, ta->float_at(index)); |
| } |
| } |
| |
| |
| static void print_double_array(typeArrayOop ta, int print_len, outputStream* st) { |
| for (int index = 0; index < print_len; index++) { |
| st->print_cr(" - %3d: %g", index, ta->double_at(index)); |
| } |
| } |
| |
| |
| static void print_byte_array(typeArrayOop ta, int print_len, outputStream* st) { |
| for (int index = 0; index < print_len; index++) { |
| jbyte c = ta->byte_at(index); |
| st->print_cr(" - %3d: %x %c", index, c, isprint(c) ? c : ' '); |
| } |
| } |
| |
| |
| static void print_short_array(typeArrayOop ta, int print_len, outputStream* st) { |
| for (int index = 0; index < print_len; index++) { |
| int v = ta->ushort_at(index); |
| st->print_cr(" - %3d: 0x%x\t %d", index, v, v); |
| } |
| } |
| |
| |
| static void print_int_array(typeArrayOop ta, int print_len, outputStream* st) { |
| for (int index = 0; index < print_len; index++) { |
| jint v = ta->int_at(index); |
| st->print_cr(" - %3d: 0x%x %d", index, v, v); |
| } |
| } |
| |
| |
| static void print_long_array(typeArrayOop ta, int print_len, outputStream* st) { |
| for (int index = 0; index < print_len; index++) { |
| jlong v = ta->long_at(index); |
| st->print_cr(" - %3d: 0x%x 0x%x", index, high(v), low(v)); |
| } |
| } |
| |
| |
| void TypeArrayKlass::oop_print_on(oop obj, outputStream* st) { |
| ArrayKlass::oop_print_on(obj, st); |
| typeArrayOop ta = typeArrayOop(obj); |
| int print_len = MIN2((intx) ta->length(), MaxElementPrintSize); |
| switch (element_type()) { |
| case T_BOOLEAN: print_boolean_array(ta, print_len, st); break; |
| case T_CHAR: print_char_array(ta, print_len, st); break; |
| case T_FLOAT: print_float_array(ta, print_len, st); break; |
| case T_DOUBLE: print_double_array(ta, print_len, st); break; |
| case T_BYTE: print_byte_array(ta, print_len, st); break; |
| case T_SHORT: print_short_array(ta, print_len, st); break; |
| case T_INT: print_int_array(ta, print_len, st); break; |
| case T_LONG: print_long_array(ta, print_len, st); break; |
| default: ShouldNotReachHere(); |
| } |
| int remaining = ta->length() - print_len; |
| if (remaining > 0) { |
| st->print_cr(" - <%d more elements, increase MaxElementPrintSize to print>", remaining); |
| } |
| } |
| |
| #endif // PRODUCT |
| |
| const char* TypeArrayKlass::internal_name() const { |
| return Klass::external_name(); |
| } |
| |
| // A TypeArrayKlass is an array of a primitive type, its defining module is java.base |
| ModuleEntry* TypeArrayKlass::module() const { |
| return ModuleEntryTable::javabase_moduleEntry(); |
| } |
| |
| PackageEntry* TypeArrayKlass::package() const { |
| return NULL; |
| } |