Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 2000, 2011, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

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  */

 #include "precompiled.hpp"

 #include "gc_implementation/shared/markSweep.inline.hpp"

 #include "gc_interface/collectedHeap.inline.hpp"

 #include "memory/gcLocker.hpp"

 #include "memory/resourceArea.hpp"

 #include "memory/universe.inline.hpp"

 #include "oops/klassOop.hpp"

 #include "oops/methodDataKlass.hpp"

 #include "oops/methodDataOop.hpp"

 #include "oops/oop.inline.hpp"

 #include "oops/oop.inline2.hpp"

 #include "runtime/handles.inline.hpp"

 #ifndef SERIALGC

 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"

 #include "oops/oop.pcgc.inline.hpp"

 #endif

 klassOop methodDataKlass::create_klass(TRAPS) {

   methodDataKlass 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");

   return k();

 }

 int methodDataKlass::oop_size(oop obj) const {

   assert(obj->is_methodData(), "must be method data oop");

   return methodDataOop(obj)->object_size();

 }

 bool methodDataKlass::oop_is_parsable(oop obj) const {

   assert(obj->is_methodData(), "must be method data oop");

   return methodDataOop(obj)->object_is_parsable();

 }

 methodDataOop methodDataKlass::allocate(methodHandle method, TRAPS) {

   int size = methodDataOopDesc::compute_allocation_size_in_words(method);

   KlassHandle h_k(THREAD, as_klassOop());

   methodDataOop mdo =

     (methodDataOop)CollectedHeap::permanent_obj_allocate(h_k, size, CHECK_NULL);

   assert(!mdo->is_parsable(), "not expecting parsability yet.");

   No_Safepoint_Verifier no_safepoint;  // init function atomic wrt GC

   mdo->initialize(method);

   assert(mdo->is_parsable(), "should be parsable here.");

   assert(size == mdo->object_size(), "wrong size for methodDataOop");

   return mdo;

 }

 void methodDataKlass::oop_follow_contents(oop obj) {

   assert (obj->is_methodData(), "object must be method data");

   methodDataOop m = methodDataOop(obj);

   obj->follow_header();

   MarkSweep::mark_and_push(m->adr_method());

   ResourceMark rm;

   for (ProfileData* data = m->first_data();

        m->is_valid(data);

        data = m->next_data(data)) {

     data->follow_contents();

   }

 }

 #ifndef SERIALGC

 void methodDataKlass::oop_follow_contents(ParCompactionManager* cm,

                                           oop obj) {

   assert (obj->is_methodData(), "object must be method data");

   methodDataOop m = methodDataOop(obj);

   obj->follow_header(cm);

   PSParallelCompact::mark_and_push(cm, m->adr_method());

   ResourceMark rm;

   for (ProfileData* data = m->first_data();

        m->is_valid(data);

        data = m->next_data(data)) {

     data->follow_contents(cm);

   }

 }

 #endif // SERIALGC

 int methodDataKlass::oop_oop_iterate(oop obj, OopClosure* blk) {

   assert (obj->is_methodData(), "object must be method data");

   methodDataOop m = methodDataOop(obj);

   // Get size before changing pointers

   // Don't call size() or oop_size() since that is a virtual call.

   int size = m->object_size();

   obj->oop_iterate_header(blk);

   blk->do_oop(m->adr_method());

   ResourceMark rm;

   for (ProfileData* data = m->first_data();

        m->is_valid(data);

        data = m->next_data(data)) {

     data->oop_iterate(blk);

   }

   return size;

 }

 int methodDataKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) {

   assert (obj->is_methodData(), "object must be method data");

   methodDataOop m = methodDataOop(obj);

   // Get size before changing pointers

   // Don't call size() or oop_size() since that is a virtual call.

   int size = m->object_size();

   obj->oop_iterate_header(blk, mr);

   oop* adr = m->adr_method();

   if (mr.contains(adr)) {

     blk->do_oop(m->adr_method());

   }

   ResourceMark rm;

   for (ProfileData* data = m->first_data();

        m->is_valid(data);

        data = m->next_data(data)) {

     data->oop_iterate_m(blk, mr);

   }

   return size;

 }

 int methodDataKlass::oop_adjust_pointers(oop obj) {

   assert(obj->is_methodData(), "should be method data");

   methodDataOop m = methodDataOop(obj);

   // Get size before changing pointers

   // Don't call size() or oop_size() since that is a virtual call.

   int size = m->object_size();

   obj->adjust_header();

   MarkSweep::adjust_pointer(m->adr_method());

   ResourceMark rm;

   ProfileData* data;

   for (data = m->first_data(); m->is_valid(data); data = m->next_data(data)) {

     data->adjust_pointers();

   }

   return size;

 }

 #ifndef SERIALGC

 void methodDataKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {

   assert (obj->is_methodData(), "object must be method data");

   methodDataOop m = methodDataOop(obj);

   // This should never point into the young gen.

   assert(!PSScavenge::should_scavenge(m->adr_method()), "Sanity");

 }

 int methodDataKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {

   assert(obj->is_methodData(), "should be method data");

   methodDataOop m = methodDataOop(obj);

   PSParallelCompact::adjust_pointer(m->adr_method());

   ResourceMark rm;

   ProfileData* data;

   for (data = m->first_data(); m->is_valid(data); data = m->next_data(data)) {

     data->update_pointers();

   }

   return m->object_size();

 }

 #endif // SERIALGC

 #ifndef PRODUCT

 // Printing

 void methodDataKlass::oop_print_on(oop obj, outputStream* st) {

   assert(obj->is_methodData(), "should be method data");

   methodDataOop m = methodDataOop(obj);

   st->print("method data for ");

   m->method()->print_value_on(st);

   st->cr();

   m->print_data_on(st);

 }

 #endif //PRODUCT

 void methodDataKlass::oop_print_value_on(oop obj, outputStream* st) {

   assert(obj->is_methodData(), "should be method data");

   methodDataOop m = methodDataOop(obj);

   st->print("method data for ");

   m->method()->print_value_on(st);

 }

 const char* methodDataKlass::internal_name() const {

   return "{method data}";

 }

 // Verification

 void methodDataKlass::oop_verify_on(oop obj, outputStream* st) {

   Klass::oop_verify_on(obj, st);

   guarantee(obj->is_methodData(), "object must be method data");

   methodDataOop m = methodDataOop(obj);

   guarantee(m->is_perm(), "should be in permspace");

   m->verify_data_on(st);

 }