view src/share/vm/oops/compiledICHolderKlass.cpp @ 1091:6aa7255741f3

6906727: UseCompressedOops: some card-marking fixes related to object arrays Summary: Introduced a new write_ref_array(HeapWords* start, size_t count) method that does the requisite MemRegion range calculation so (some of the) clients of the erstwhile write_ref_array(MemRegion mr) do not need to worry. This removed all external uses of array_size(), which was also simplified and made private. Asserts were added to catch other possible issues. Further, less essential, fixes stemming from this investigation are deferred to CR 6904516 (to follow shortly in hs17). Reviewed-by: kvn, coleenp, jmasa
author ysr
date Thu, 03 Dec 2009 15:01:57 -0800
parents a61af66fc99e
children 4e6abf09f540
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/*
 * Copyright 1998-2006 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/_compiledICHolderKlass.cpp.incl"

klassOop compiledICHolderKlass::create_klass(TRAPS) {
  compiledICHolderKlass o;
  KlassHandle h_this_klass(THREAD, Universe::klassKlassObj());
  KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_NULL);
  // Make sure size calculation is right
  assert(k()->size() == align_object_size(header_size()), "wrong size for object");
  java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror
  return k();
}


compiledICHolderOop compiledICHolderKlass::allocate(TRAPS) {
  KlassHandle h_k(THREAD, as_klassOop());
  int size = compiledICHolderOopDesc::object_size();
  compiledICHolderOop c = (compiledICHolderOop)
    CollectedHeap::permanent_obj_allocate(h_k, size, CHECK_NULL);
  c->set_holder_method(NULL);
  c->set_holder_klass(NULL);
  return c;
}


int compiledICHolderKlass::oop_size(oop obj) const {
  assert(obj->is_compiledICHolder(), "must be compiledICHolder");
  return compiledICHolderOop(obj)->object_size();
}

void compiledICHolderKlass::oop_follow_contents(oop obj) {
  assert(obj->is_compiledICHolder(), "must be compiledICHolder");
  compiledICHolderOop c = compiledICHolderOop(obj);

  obj->follow_header();
  MarkSweep::mark_and_push(c->adr_holder_method());
  MarkSweep::mark_and_push(c->adr_holder_klass());
}

#ifndef SERIALGC
void compiledICHolderKlass::oop_follow_contents(ParCompactionManager* cm,
                                                oop obj) {
  assert(obj->is_compiledICHolder(), "must be compiledICHolder");
  compiledICHolderOop c = compiledICHolderOop(obj);

  obj->follow_header(cm);
  PSParallelCompact::mark_and_push(cm, c->adr_holder_method());
  PSParallelCompact::mark_and_push(cm, c->adr_holder_klass());
}
#endif // SERIALGC


int compiledICHolderKlass::oop_oop_iterate(oop obj, OopClosure* blk) {
  assert(obj->is_compiledICHolder(), "must be compiledICHolder");
  compiledICHolderOop c = compiledICHolderOop(obj);
  // Get size before changing pointers.
  // Don't call size() or oop_size() since that is a virtual call.
  int size = c->object_size();

  obj->oop_iterate_header(blk);
  blk->do_oop(c->adr_holder_method());
  blk->do_oop(c->adr_holder_klass());
  return size;
}

int compiledICHolderKlass::oop_oop_iterate_m(oop obj, OopClosure* blk,
                                              MemRegion mr) {
  assert(obj->is_compiledICHolder(), "must be compiledICHolder");
  compiledICHolderOop c = compiledICHolderOop(obj);
  // Get size before changing pointers.
  // Don't call size() or oop_size() since that is a virtual call.
  int size = c->object_size();

  obj->oop_iterate_header(blk, mr);

  oop* adr;
  adr = c->adr_holder_method();
  if (mr.contains(adr)) blk->do_oop(adr);
  adr = c->adr_holder_klass();
  if (mr.contains(adr)) blk->do_oop(adr);
  return size;
}


int compiledICHolderKlass::oop_adjust_pointers(oop obj) {
  assert(obj->is_compiledICHolder(), "must be compiledICHolder");
  compiledICHolderOop c = compiledICHolderOop(obj);
  // Get size before changing pointers.
  // Don't call size() or oop_size() since that is a virtual call.
  int size = c->object_size();

  MarkSweep::adjust_pointer(c->adr_holder_method());
  MarkSweep::adjust_pointer(c->adr_holder_klass());
  obj->adjust_header();
  return size;
}

#ifndef SERIALGC
void compiledICHolderKlass::oop_copy_contents(PSPromotionManager* pm, oop obj) {
  assert(obj->is_compiledICHolder(), "must be compiledICHolder");
}

void compiledICHolderKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
  assert(obj->is_compiledICHolder(), "must be compiledICHolder");
}

int compiledICHolderKlass::oop_update_pointers(ParCompactionManager* cm,
                                               oop obj) {
  assert(obj->is_compiledICHolder(), "must be compiledICHolder");
  compiledICHolderOop c = compiledICHolderOop(obj);

  PSParallelCompact::adjust_pointer(c->adr_holder_method());
  PSParallelCompact::adjust_pointer(c->adr_holder_klass());
  return c->object_size();
}

int compiledICHolderKlass::oop_update_pointers(ParCompactionManager* cm,
                                               oop obj,
                                               HeapWord* beg_addr,
                                               HeapWord* end_addr) {
  assert(obj->is_compiledICHolder(), "must be compiledICHolder");
  compiledICHolderOop c = compiledICHolderOop(obj);

  oop* p;
  p = c->adr_holder_method();
  PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
  p = c->adr_holder_klass();
  PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
  return c->object_size();
}
#endif // SERIALGC

#ifndef PRODUCT

// Printing

void compiledICHolderKlass::oop_print_on(oop obj, outputStream* st) {
  assert(obj->is_compiledICHolder(), "must be compiledICHolder");
  Klass::oop_print_on(obj, st);
  compiledICHolderOop c = compiledICHolderOop(obj);
  st->print(" - method: "); c->holder_method()->print_value_on(st); st->cr();
  st->print(" - klass:  "); c->holder_klass()->print_value_on(st); st->cr();
}


void compiledICHolderKlass::oop_print_value_on(oop obj, outputStream* st) {
  assert(obj->is_compiledICHolder(), "must be compiledICHolder");
  Klass::oop_print_value_on(obj, st);
}
#endif

const char* compiledICHolderKlass::internal_name() const {
  return "{compiledICHolder}";
}

// Verification

void compiledICHolderKlass::oop_verify_on(oop obj, outputStream* st) {
  Klass::oop_verify_on(obj, st);
  guarantee(obj->is_compiledICHolder(), "must be compiledICHolder");
  compiledICHolderOop c = compiledICHolderOop(obj);
  guarantee(c->is_perm(),             "should be in permspace");
  guarantee(c->holder_method()->is_perm(),   "should be in permspace");
  guarantee(c->holder_method()->is_method(), "should be method");
  guarantee(c->holder_klass()->is_perm(),    "should be in permspace");
  guarantee(c->holder_klass()->is_klass(),   "should be klass");
}