| /* |
| * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| * |
| */ |
| |
| # include "incls/_precompiled.incl" |
| # include "incls/_typeArrayKlass.cpp.incl" |
| |
| bool typeArrayKlass::compute_is_subtype_of(klassOop k) { |
| if (!k->klass_part()->oop_is_typeArray()) { |
| return arrayKlass::compute_is_subtype_of(k); |
| } |
| |
| typeArrayKlass* tak = typeArrayKlass::cast(k); |
| if (dimension() != tak->dimension()) return false; |
| |
| return element_type() == tak->element_type(); |
| } |
| |
| klassOop typeArrayKlass::create_klass(BasicType type, int scale, TRAPS) { |
| typeArrayKlass o; |
| |
| symbolHandle sym(symbolOop(NULL)); |
| // bootstrapping: don't create sym if symbolKlass not created yet |
| if (Universe::symbolKlassObj() != NULL) { |
| sym = oopFactory::new_symbol_handle(external_name(type), CHECK_NULL); |
| } |
| KlassHandle klassklass (THREAD, Universe::typeArrayKlassKlassObj()); |
| |
| arrayKlassHandle k = base_create_array_klass(o.vtbl_value(), header_size(), klassklass, CHECK_NULL); |
| typeArrayKlass* ak = typeArrayKlass::cast(k()); |
| ak->set_name(sym()); |
| ak->set_layout_helper(array_layout_helper(type)); |
| assert(scale == (1 << ak->log2_element_size()), "scale must check out"); |
| assert(ak->oop_is_javaArray(), "sanity"); |
| assert(ak->oop_is_typeArray(), "sanity"); |
| ak->set_max_length(arrayOopDesc::max_array_length(type)); |
| assert(k()->size() > header_size(), "bad size"); |
| |
| // Call complete_create_array_klass after all instance variables have been initialized. |
| KlassHandle super (THREAD, k->super()); |
| complete_create_array_klass(k, super, CHECK_NULL); |
| |
| return k(); |
| } |
| |
| typeArrayOop typeArrayKlass::allocate(int length, TRAPS) { |
| assert(log2_element_size() >= 0, "bad scale"); |
| if (length >= 0) { |
| if (length <= max_length()) { |
| size_t size = typeArrayOopDesc::object_size(layout_helper(), length); |
| KlassHandle h_k(THREAD, as_klassOop()); |
| typeArrayOop t; |
| CollectedHeap* ch = Universe::heap(); |
| if (size < ch->large_typearray_limit()) { |
| t = (typeArrayOop)CollectedHeap::array_allocate(h_k, (int)size, length, CHECK_NULL); |
| } else { |
| t = (typeArrayOop)CollectedHeap::large_typearray_allocate(h_k, (int)size, length, CHECK_NULL); |
| } |
| assert(t->is_parsable(), "Don't publish unless parsable"); |
| return t; |
| } else { |
| THROW_OOP_0(Universe::out_of_memory_error_array_size()); |
| } |
| } else { |
| THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
| } |
| } |
| |
| typeArrayOop typeArrayKlass::allocate_permanent(int length, TRAPS) { |
| if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); |
| int size = typeArrayOopDesc::object_size(layout_helper(), length); |
| KlassHandle h_k(THREAD, as_klassOop()); |
| typeArrayOop t = (typeArrayOop) |
| CollectedHeap::permanent_array_allocate(h_k, size, length, CHECK_NULL); |
| assert(t->is_parsable(), "Can't publish until parsable"); |
| return t; |
| } |
| |
| 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()); |
| } |
| |
| // This is an attempt to make the copy_array fast. |
| // NB: memmove takes care of overlapping memory segments. |
| // Potential problem: memmove is not guaranteed to be word atomic |
| // Revisit in Merlin |
| int l2es = log2_element_size(); |
| int ihs = array_header_in_bytes() / wordSize; |
| char* src = (char*) ((oop*)s + ihs) + (src_pos << l2es); |
| char* dst = (char*) ((oop*)d + ihs) + (dst_pos << l2es); |
| memmove(dst, src, length << l2es); |
| } |
| |
| |
| // create a klass of array holding typeArrays |
| klassOop typeArrayKlass::array_klass_impl(bool or_null, int n, TRAPS) { |
| typeArrayKlassHandle h_this(THREAD, as_klassOop()); |
| return array_klass_impl(h_this, or_null, n, THREAD); |
| } |
| |
| klassOop typeArrayKlass::array_klass_impl(typeArrayKlassHandle h_this, bool or_null, int n, TRAPS) { |
| int dimension = h_this->dimension(); |
| assert(dimension <= n, "check order of chain"); |
| if (dimension == n) |
| return h_this(); |
| |
| objArrayKlassHandle h_ak(THREAD, h_this->higher_dimension()); |
| if (h_ak.is_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); |
| |
| h_ak = objArrayKlassHandle(THREAD, h_this->higher_dimension()); |
| if (h_ak.is_null()) { |
| klassOop oak = objArrayKlassKlass::cast( |
| Universe::objArrayKlassKlassObj())->allocate_objArray_klass( |
| dimension + 1, h_this, CHECK_NULL); |
| h_ak = objArrayKlassHandle(THREAD, oak); |
| h_ak->set_lower_dimension(h_this()); |
| h_this->set_higher_dimension(h_ak()); |
| assert(h_ak->oop_is_objArray(), "incorrect initialization of objArrayKlass"); |
| } |
| } |
| } else { |
| CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); |
| } |
| if (or_null) { |
| return h_ak->array_klass_or_null(n); |
| } |
| return h_ak->array_klass(n, CHECK_NULL); |
| } |
| |
| klassOop 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::oop_follow_contents(oop obj) { |
| assert(obj->is_typeArray(),"must be a type array"); |
| // Performance tweak: We skip iterating over the klass pointer since we |
| // know that Universe::typeArrayKlass never moves. |
| } |
| |
| #ifndef SERIALGC |
| void typeArrayKlass::oop_follow_contents(ParCompactionManager* cm, oop obj) { |
| assert(obj->is_typeArray(),"must be a type array"); |
| // Performance tweak: We skip iterating over the klass pointer since we |
| // know that Universe::typeArrayKlass never moves. |
| } |
| #endif // SERIALGC |
| |
| int typeArrayKlass::oop_adjust_pointers(oop obj) { |
| assert(obj->is_typeArray(),"must be a type array"); |
| typeArrayOop t = typeArrayOop(obj); |
| // Performance tweak: We skip iterating over the klass pointer since we |
| // know that Universe::typeArrayKlass never moves. |
| return t->object_size(); |
| } |
| |
| int typeArrayKlass::oop_oop_iterate(oop obj, OopClosure* blk) { |
| assert(obj->is_typeArray(),"must be a type array"); |
| typeArrayOop t = typeArrayOop(obj); |
| // Performance tweak: We skip iterating over the klass pointer since we |
| // know that Universe::typeArrayKlass never moves. |
| return t->object_size(); |
| } |
| |
| int typeArrayKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) { |
| assert(obj->is_typeArray(),"must be a type array"); |
| typeArrayOop t = typeArrayOop(obj); |
| // Performance tweak: We skip iterating over the klass pointer since we |
| // know that Universe::typeArrayKlass never moves. |
| return t->object_size(); |
| } |
| |
| #ifndef SERIALGC |
| void typeArrayKlass::oop_copy_contents(PSPromotionManager* pm, oop obj) { |
| assert(obj->is_typeArray(),"must be a type array"); |
| } |
| |
| void typeArrayKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { |
| assert(obj->is_typeArray(),"must be a type array"); |
| } |
| |
| int |
| typeArrayKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { |
| assert(obj->is_typeArray(),"must be a type array"); |
| return typeArrayOop(obj)->object_size(); |
| } |
| |
| int |
| typeArrayKlass::oop_update_pointers(ParCompactionManager* cm, oop obj, |
| HeapWord* beg_addr, HeapWord* end_addr) { |
| assert(obj->is_typeArray(),"must be a type array"); |
| return typeArrayOop(obj)->object_size(); |
| } |
| #endif // SERIALGC |
| |
| 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; |
| } |
| |
| #ifndef PRODUCT |
| // Printing |
| |
| 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) { |
| tty->print_cr(" - <%d more elements, increase MaxElementPrintSize to print>", remaining); |
| } |
| } |
| |
| #endif // PRODUCT |
| |
| const char* typeArrayKlass::internal_name() const { |
| return Klass::external_name(); |
| } |