view src/share/vm/memory/oopFactory.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
line wrap: on
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/*
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 * 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.
 *
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 */

# include "incls/_precompiled.incl"
# include "incls/_oopFactory.cpp.incl"


typeArrayOop oopFactory::new_charArray(const char* utf8_str, TRAPS) {
  int length = utf8_str == NULL ? 0 : UTF8::unicode_length(utf8_str);
  typeArrayOop result = new_charArray(length, CHECK_NULL);
  if (length > 0) {
    UTF8::convert_to_unicode(utf8_str, result->char_at_addr(0), length);
  }
  return result;
}

typeArrayOop oopFactory::new_permanent_charArray(int length, TRAPS) {
  return typeArrayKlass::cast(Universe::charArrayKlassObj())->allocate_permanent(length, THREAD);
}

typeArrayOop oopFactory::new_permanent_byteArray(int length, TRAPS) {
  return typeArrayKlass::cast(Universe::byteArrayKlassObj())->allocate_permanent(length, THREAD);
}


typeArrayOop oopFactory::new_permanent_shortArray(int length, TRAPS) {
  return typeArrayKlass::cast(Universe::shortArrayKlassObj())->allocate_permanent(length, THREAD);
}


typeArrayOop oopFactory::new_permanent_intArray(int length, TRAPS) {
  return typeArrayKlass::cast(Universe::intArrayKlassObj())->allocate_permanent(length, THREAD);
}


typeArrayOop oopFactory::new_typeArray(BasicType type, int length, TRAPS) {
  klassOop type_asKlassOop = Universe::typeArrayKlassObj(type);
  typeArrayKlass* type_asArrayKlass = typeArrayKlass::cast(type_asKlassOop);
  typeArrayOop result = type_asArrayKlass->allocate(length, THREAD);
  return result;
}


objArrayOop oopFactory::new_objArray(klassOop klass, int length, TRAPS) {
  assert(klass->is_klass(), "must be instance class");
  if (klass->klass_part()->oop_is_array()) {
    return ((arrayKlass*)klass->klass_part())->allocate_arrayArray(1, length, THREAD);
  } else {
    assert (klass->klass_part()->oop_is_instance(), "new object array with klass not an instanceKlass");
    return ((instanceKlass*)klass->klass_part())->allocate_objArray(1, length, THREAD);
  }
}

objArrayOop oopFactory::new_system_objArray(int length, TRAPS) {
  int size = objArrayOopDesc::object_size(length);
  KlassHandle klass (THREAD, Universe::systemObjArrayKlassObj());
  objArrayOop o = (objArrayOop)
    Universe::heap()->permanent_array_allocate(klass, size, length, CHECK_NULL);
  // initialization not needed, allocated cleared
  return o;
}


constantPoolOop oopFactory::new_constantPool(int length,
                                             bool is_conc_safe,
                                             TRAPS) {
  constantPoolKlass* ck = constantPoolKlass::cast(Universe::constantPoolKlassObj());
  return ck->allocate(length, is_conc_safe, CHECK_NULL);
}


constantPoolCacheOop oopFactory::new_constantPoolCache(int length,
                                                       bool is_conc_safe,
                                                       TRAPS) {
  constantPoolCacheKlass* ck = constantPoolCacheKlass::cast(Universe::constantPoolCacheKlassObj());
  return ck->allocate(length, is_conc_safe, CHECK_NULL);
}


klassOop oopFactory::new_instanceKlass(int vtable_len, int itable_len,
                                       int static_field_size,
                                       unsigned int nonstatic_oop_map_count,
                                       ReferenceType rt, TRAPS) {
  instanceKlassKlass* ikk = instanceKlassKlass::cast(Universe::instanceKlassKlassObj());
  return ikk->allocate_instance_klass(vtable_len, itable_len, static_field_size, nonstatic_oop_map_count, rt, CHECK_NULL);
}


constMethodOop oopFactory::new_constMethod(int byte_code_size,
                                           int compressed_line_number_size,
                                           int localvariable_table_length,
                                           int checked_exceptions_length,
                                           bool is_conc_safe,
                                           TRAPS) {
  klassOop cmkObj = Universe::constMethodKlassObj();
  constMethodKlass* cmk = constMethodKlass::cast(cmkObj);
  return cmk->allocate(byte_code_size, compressed_line_number_size,
                       localvariable_table_length, checked_exceptions_length,
                       is_conc_safe,
                       CHECK_NULL);
}


methodOop oopFactory::new_method(int byte_code_size, AccessFlags access_flags,
                                 int compressed_line_number_size,
                                 int localvariable_table_length,
                                 int checked_exceptions_length,
                                 bool is_conc_safe,
                                 TRAPS) {
  methodKlass* mk = methodKlass::cast(Universe::methodKlassObj());
  assert(!access_flags.is_native() || byte_code_size == 0,
         "native methods should not contain byte codes");
  constMethodOop cm = new_constMethod(byte_code_size,
                                      compressed_line_number_size,
                                      localvariable_table_length,
                                      checked_exceptions_length,
                                      is_conc_safe, CHECK_NULL);
  constMethodHandle rw(THREAD, cm);
  return mk->allocate(rw, access_flags, CHECK_NULL);
}


methodDataOop oopFactory::new_methodData(methodHandle method, TRAPS) {
  methodDataKlass* mdk = methodDataKlass::cast(Universe::methodDataKlassObj());
  return mdk->allocate(method, CHECK_NULL);
}


compiledICHolderOop oopFactory::new_compiledICHolder(methodHandle method, KlassHandle klass, TRAPS) {
  compiledICHolderKlass* ck = (compiledICHolderKlass*) Universe::compiledICHolderKlassObj()->klass_part();
  compiledICHolderOop c = ck->allocate(CHECK_NULL);
  c->set_holder_method(method());
  c->set_holder_klass(klass());
  return c;
}