src/share/vm/oops/compiledICHolderKlass.cpp

Thu, 22 Jul 2010 10:27:41 -0400

author
tonyp
date
Thu, 22 Jul 2010 10:27:41 -0400
changeset 2061
9d7a8ab3736b
parent 1907
c18cbe5936b8
child 2068
7fcd5f39bd7a
permissions
-rw-r--r--

6962589: remove breadth first scanning code from parallel gc
Summary: Remove the breadth-first copying order from ParallelScavenge and use depth-first by default.
Reviewed-by: jcoomes, ysr, johnc

     1 /*
     2  * Copyright (c) 1998, 2006, Oracle and/or its affiliates. All rights reserved.
     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
     4  *
     5  * This code is free software; you can redistribute it and/or modify it
     6  * under the terms of the GNU General Public License version 2 only, as
     7  * published by the Free Software Foundation.
     8  *
     9  * This code is distributed in the hope that it will be useful, but WITHOUT
    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    12  * version 2 for more details (a copy is included in the LICENSE file that
    13  * accompanied this code).
    14  *
    15  * You should have received a copy of the GNU General Public License version
    16  * 2 along with this work; if not, write to the Free Software Foundation,
    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
    18  *
    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
    20  * or visit www.oracle.com if you need additional information or have any
    21  * questions.
    22  *
    23  */
    25 # include "incls/_precompiled.incl"
    26 # include "incls/_compiledICHolderKlass.cpp.incl"
    28 klassOop compiledICHolderKlass::create_klass(TRAPS) {
    29   compiledICHolderKlass o;
    30   KlassHandle h_this_klass(THREAD, Universe::klassKlassObj());
    31   KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_NULL);
    32   // Make sure size calculation is right
    33   assert(k()->size() == align_object_size(header_size()), "wrong size for object");
    34   java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror
    35   return k();
    36 }
    39 compiledICHolderOop compiledICHolderKlass::allocate(TRAPS) {
    40   KlassHandle h_k(THREAD, as_klassOop());
    41   int size = compiledICHolderOopDesc::object_size();
    42   compiledICHolderOop c = (compiledICHolderOop)
    43     CollectedHeap::permanent_obj_allocate(h_k, size, CHECK_NULL);
    44   c->set_holder_method(NULL);
    45   c->set_holder_klass(NULL);
    46   return c;
    47 }
    50 int compiledICHolderKlass::oop_size(oop obj) const {
    51   assert(obj->is_compiledICHolder(), "must be compiledICHolder");
    52   return compiledICHolderOop(obj)->object_size();
    53 }
    55 void compiledICHolderKlass::oop_follow_contents(oop obj) {
    56   assert(obj->is_compiledICHolder(), "must be compiledICHolder");
    57   compiledICHolderOop c = compiledICHolderOop(obj);
    59   obj->follow_header();
    60   MarkSweep::mark_and_push(c->adr_holder_method());
    61   MarkSweep::mark_and_push(c->adr_holder_klass());
    62 }
    64 #ifndef SERIALGC
    65 void compiledICHolderKlass::oop_follow_contents(ParCompactionManager* cm,
    66                                                 oop obj) {
    67   assert(obj->is_compiledICHolder(), "must be compiledICHolder");
    68   compiledICHolderOop c = compiledICHolderOop(obj);
    70   obj->follow_header(cm);
    71   PSParallelCompact::mark_and_push(cm, c->adr_holder_method());
    72   PSParallelCompact::mark_and_push(cm, c->adr_holder_klass());
    73 }
    74 #endif // SERIALGC
    77 int compiledICHolderKlass::oop_oop_iterate(oop obj, OopClosure* blk) {
    78   assert(obj->is_compiledICHolder(), "must be compiledICHolder");
    79   compiledICHolderOop c = compiledICHolderOop(obj);
    80   // Get size before changing pointers.
    81   // Don't call size() or oop_size() since that is a virtual call.
    82   int size = c->object_size();
    84   obj->oop_iterate_header(blk);
    85   blk->do_oop(c->adr_holder_method());
    86   blk->do_oop(c->adr_holder_klass());
    87   return size;
    88 }
    90 int compiledICHolderKlass::oop_oop_iterate_m(oop obj, OopClosure* blk,
    91                                               MemRegion mr) {
    92   assert(obj->is_compiledICHolder(), "must be compiledICHolder");
    93   compiledICHolderOop c = compiledICHolderOop(obj);
    94   // Get size before changing pointers.
    95   // Don't call size() or oop_size() since that is a virtual call.
    96   int size = c->object_size();
    98   obj->oop_iterate_header(blk, mr);
   100   oop* adr;
   101   adr = c->adr_holder_method();
   102   if (mr.contains(adr)) blk->do_oop(adr);
   103   adr = c->adr_holder_klass();
   104   if (mr.contains(adr)) blk->do_oop(adr);
   105   return size;
   106 }
   109 int compiledICHolderKlass::oop_adjust_pointers(oop obj) {
   110   assert(obj->is_compiledICHolder(), "must be compiledICHolder");
   111   compiledICHolderOop c = compiledICHolderOop(obj);
   112   // Get size before changing pointers.
   113   // Don't call size() or oop_size() since that is a virtual call.
   114   int size = c->object_size();
   116   MarkSweep::adjust_pointer(c->adr_holder_method());
   117   MarkSweep::adjust_pointer(c->adr_holder_klass());
   118   obj->adjust_header();
   119   return size;
   120 }
   122 #ifndef SERIALGC
   123 void compiledICHolderKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
   124   assert(obj->is_compiledICHolder(), "must be compiledICHolder");
   125 }
   127 int compiledICHolderKlass::oop_update_pointers(ParCompactionManager* cm,
   128                                                oop obj) {
   129   assert(obj->is_compiledICHolder(), "must be compiledICHolder");
   130   compiledICHolderOop c = compiledICHolderOop(obj);
   132   PSParallelCompact::adjust_pointer(c->adr_holder_method());
   133   PSParallelCompact::adjust_pointer(c->adr_holder_klass());
   134   return c->object_size();
   135 }
   137 int compiledICHolderKlass::oop_update_pointers(ParCompactionManager* cm,
   138                                                oop obj,
   139                                                HeapWord* beg_addr,
   140                                                HeapWord* end_addr) {
   141   assert(obj->is_compiledICHolder(), "must be compiledICHolder");
   142   compiledICHolderOop c = compiledICHolderOop(obj);
   144   oop* p;
   145   p = c->adr_holder_method();
   146   PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
   147   p = c->adr_holder_klass();
   148   PSParallelCompact::adjust_pointer(p, beg_addr, end_addr);
   149   return c->object_size();
   150 }
   151 #endif // SERIALGC
   153 #ifndef PRODUCT
   155 // Printing
   157 void compiledICHolderKlass::oop_print_on(oop obj, outputStream* st) {
   158   assert(obj->is_compiledICHolder(), "must be compiledICHolder");
   159   Klass::oop_print_on(obj, st);
   160   compiledICHolderOop c = compiledICHolderOop(obj);
   161   st->print(" - method: "); c->holder_method()->print_value_on(st); st->cr();
   162   st->print(" - klass:  "); c->holder_klass()->print_value_on(st); st->cr();
   163 }
   165 #endif //PRODUCT
   167 void compiledICHolderKlass::oop_print_value_on(oop obj, outputStream* st) {
   168   assert(obj->is_compiledICHolder(), "must be compiledICHolder");
   169   Klass::oop_print_value_on(obj, st);
   170 }
   172 const char* compiledICHolderKlass::internal_name() const {
   173   return "{compiledICHolder}";
   174 }
   176 // Verification
   178 void compiledICHolderKlass::oop_verify_on(oop obj, outputStream* st) {
   179   Klass::oop_verify_on(obj, st);
   180   guarantee(obj->is_compiledICHolder(), "must be compiledICHolder");
   181   compiledICHolderOop c = compiledICHolderOop(obj);
   182   guarantee(c->is_perm(),             "should be in permspace");
   183   guarantee(c->holder_method()->is_perm(),   "should be in permspace");
   184   guarantee(c->holder_method()->is_method(), "should be method");
   185   guarantee(c->holder_klass()->is_perm(),    "should be in permspace");
   186   guarantee(c->holder_klass()->is_klass(),   "should be klass");
   187 }

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