vm/oops/klassKlass.cpp

   1 /* Copyright 1994, 1995 LongView Technologies L.L.C. $Revision: 1.34 $ */
   2 /* Copyright (c) 2006, Sun Microsystems, Inc.
   3 All rights reserved.
   4
   5 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
   6 following conditions are met:
   7
   8     * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
   9     * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following
  10           disclaimer in the documentation and/or other materials provided with the distribution.
  11     * Neither the name of Sun Microsystems nor the names of its contributors may be used to endorse or promote products derived
  12           from this software without specific prior written permission.
  13
  14 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
  15 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
  16 THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  17 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  18 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  19 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
  20
  21
  22 */
  23
  24 # include "incls/_precompiled.incl"
  25 # include "incls/_klassKlass.cpp.incl"
  26
  27 void set_klassKlass_vtbl(Klass* k) {
  28   klassKlass o;
  29   k->set_vtbl_value(o.vtbl_value());
  30 }
  31
  32 oop klassKlass::allocateObject() {
  33   // allocate
  34   memOop obj = as_memOop(Universe::allocate_tenured(non_indexable_size()));
  35   // header + instance variables
  36   obj->initialize_header(has_untagged_contents(), as_klassOop());
  37   obj->initialize_body(klassOopDesc::header_size(), non_indexable_size());
  38   return obj;
  39 }
  40
  41 klassOop klassKlass::create_subclass(mixinOop mixin, Format format) {
  42   return NULL;
  43 }
  44
  45 int klassKlass::oop_scavenge_contents(oop obj) {
  46   int size = non_indexable_size();
  47   // header
  48   memOop(obj)->scavenge_header();
  49   Klass* k = klassOop(obj)->klass_part();
  50   scavenge_oop((oop*) &k->_non_indexable_size);
  51   scavenge_oop((oop*) &k->_has_untagged_contents);
  52   scavenge_oop((oop*) &k->_classVars);
  53   scavenge_oop((oop*) &k->_methods);
  54   scavenge_oop((oop*) &k->_superKlass);
  55   scavenge_oop((oop*) &k->_mixin);
  56   // instance variables
  57   memOop(obj)->scavenge_body(klassOopDesc::header_size(), size);
  58   return size;
  59 }
  60
  61 int klassKlass::oop_scavenge_tenured_contents(oop obj) {
  62   int size = non_indexable_size();
  63   // header
  64   memOop(obj)->scavenge_tenured_header();
  65   Klass* k = klassOop(obj)->klass_part();
  66   scavenge_tenured_oop((oop*) &k->_non_indexable_size);
  67   scavenge_tenured_oop((oop*) &k->_has_untagged_contents);
  68   scavenge_tenured_oop((oop*) &k->_classVars);
  69   scavenge_tenured_oop((oop*) &k->_methods);
  70   scavenge_tenured_oop((oop*) &k->_superKlass);
  71   scavenge_tenured_oop((oop*) &k->_mixin);
  72   // instance variables
  73   memOop(obj)->scavenge_tenured_body(klassOopDesc::header_size(), size);
  74   return size;
  75 }
  76
  77 void klassKlass::oop_follow_contents(oop obj) {
  78   // header
  79   memOop(obj)->follow_header();
  80   Klass* k = klassOop(obj)->klass_part();
  81   MarkSweep::reverse_and_push((oop*) &k->_non_indexable_size);
  82   MarkSweep::reverse_and_push((oop*) &k->_has_untagged_contents);
  83   MarkSweep::reverse_and_push((oop*) &k->_classVars);
  84   MarkSweep::reverse_and_push((oop*) &k->_methods);
  85   MarkSweep::reverse_and_push((oop*) &k->_superKlass);
  86   MarkSweep::reverse_and_push((oop*) &k->_mixin);
  87   // instance variables
  88   memOop(obj)->follow_body(klassOopDesc::header_size(), non_indexable_size());
  89 }
  90
  91 bool klassKlass::oop_verify(oop obj) {
  92   assert(obj->is_klass(), "must be class");
  93   Klass* k = klassOop(obj)->klass_part();
  94   /*
  95   if (!k->oop_is_smi()) {
  96     int a = k->non_indexable_size();
  97     int b = k->oop_header_size();
  98     int c = k->number_of_instance_variables();
  99     if (a != b + c) {
 100       warning("inconsistent non indexable size");
 101     }
 102   }
 103   */
 104   bool flag = memOop(obj)->verify();
 105   return flag;
 106 }
 107
 108 void klassKlass::oop_print_on(oop obj, outputStream* st) {
 109   memOopKlass::oop_print_on(obj, st);
 110 }
 111
 112 void klassKlass::oop_print_value_on(oop obj, outputStream* st) {
 113   if (PrintObjectID) {
 114     memOop(obj)->print_id_on(st);
 115     st->print("-");
 116   }
 117   klassOop(obj)->klass_part()->print_name_on(st);
 118   st->print(" class");
 119 }
 120
 121 void klassKlass::oop_layout_iterate(oop obj, ObjectLayoutClosure* blk) {
 122   // header
 123   memOop(obj)->layout_iterate_header(blk);
 124   Klass* k = klassOop(obj)->klass_part();
 125   blk->do_oop("size",      (oop*) &k->_non_indexable_size);
 126   blk->do_oop("untag",     (oop*) &k->_has_untagged_contents);
 127   blk->do_oop("classVars", (oop*) &k->_classVars);
 128   blk->do_oop("methods",   (oop*) &k->_methods);
 129   blk->do_oop("super",     (oop*) &k->_superKlass);
 130   blk->do_oop("mixin",     (oop*) &k->_mixin);
 131   // instance variables
 132   memOop(obj)->layout_iterate_body(blk, klassOopDesc::header_size(), non_indexable_size());
 133 }
 134
 135 void klassKlass::oop_oop_iterate(oop obj, OopClosure* blk) {
 136   // header
 137   memOop(obj)->oop_iterate_header(blk);
 138   Klass* k = klassOop(obj)->klass_part();
 139   blk->do_oop((oop*) &k->_non_indexable_size);
 140   blk->do_oop((oop*) &k->_has_untagged_contents);
 141   blk->do_oop((oop*) &k->_classVars);
 142   blk->do_oop((oop*) &k->_methods);
 143   blk->do_oop((oop*) &k->_superKlass);
 144   blk->do_oop((oop*) &k->_mixin);
 145   // instance variables
 146   memOop(obj)->oop_iterate_body(blk, klassOopDesc::header_size(), non_indexable_size());
 147 }
 148
 149 oop klassKlass::oop_primitive_allocate(oop obj) {
 150   return klassOop(obj)->klass_part()->allocateObject();
 151 }
 152
 153 oop klassKlass::oop_primitive_allocate_size(oop obj, int size) {
 154   return klassOop(obj)->klass_part()->allocateObjectSize(size);
 155 }
 156
 157 oop klassKlass::oop_shallow_copy(oop obj, bool tenured) {
 158   return markSymbol(vmSymbols::not_clonable());
 159 }