jdk8-mips64-public/hotspot: src/share/vm/gc_implementation/g1/g1OopClosures.inline.hpp@d30fa85f9994 (annotated)

src/share/vm/gc_implementation/g1/g1OopClosures.inline.hpp@d30fa85f9994 (annotated)

src/share/vm/gc_implementation/g1/g1OopClosures.inline.hpp

Thu, 12 Jan 2012 00:06:47 -0800

author: johnc
date: Thu, 12 Jan 2012 00:06:47 -0800
changeset 3463: d30fa85f9994
parent 3322: 4406629aa157
child 3464: eff609af17d7
permissions: -rw-r--r--

6484965: G1: piggy-back liveness accounting phase on marking
Summary: Remove the separate counting phase of concurrent marking by tracking the amount of marked bytes and the cards spanned by marked objects in marking task/worker thread local data structures, which are updated as individual objects are marked.
Reviewed-by: brutisso, tonyp

 /*
  * Copyright (c) 2001, 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
  * questions.
  *
  */
 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_INLINE_HPP
 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_INLINE_HPP
 #include "gc_implementation/g1/concurrentMark.inline.hpp"
 #include "gc_implementation/g1/g1CollectedHeap.hpp"
 #include "gc_implementation/g1/g1OopClosures.hpp"
 #include "gc_implementation/g1/g1RemSet.hpp"
 /*
  * This really ought to be an inline function, but apparently the C++
  * compiler sometimes sees fit to ignore inline declarations.  Sigh.
  */
 // This must a ifdef'ed because the counting it controls is in a
 // perf-critical inner loop.
 #define FILTERINTOCSCLOSURE_DOHISTOGRAMCOUNT 0
 template <class T> inline void FilterIntoCSClosure::do_oop_nv(T* p) {
   T heap_oop = oopDesc::load_heap_oop(p);
   if (!oopDesc::is_null(heap_oop) &&
       _g1->obj_in_cs(oopDesc::decode_heap_oop_not_null(heap_oop))) {
     _oc->do_oop(p);
 #if FILTERINTOCSCLOSURE_DOHISTOGRAMCOUNT
     if (_dcto_cl != NULL)
       _dcto_cl->incr_count();
 #endif
   }
 }
 #define FILTEROUTOFREGIONCLOSURE_DOHISTOGRAMCOUNT 0
 template <class T> inline void FilterOutOfRegionClosure::do_oop_nv(T* p) {
   T heap_oop = oopDesc::load_heap_oop(p);
   if (!oopDesc::is_null(heap_oop)) {
     HeapWord* obj_hw = (HeapWord*)oopDesc::decode_heap_oop_not_null(heap_oop);
     if (obj_hw < _r_bottom || obj_hw >= _r_end) {
       _oc->do_oop(p);
 #if FILTEROUTOFREGIONCLOSURE_DOHISTOGRAMCOUNT
       _out_of_region++;
 #endif
     }
   }
 }
 // This closure is applied to the fields of the objects that have just been copied.
 template <class T> inline void G1ParScanClosure::do_oop_nv(T* p) {
   T heap_oop = oopDesc::load_heap_oop(p);
   if (!oopDesc::is_null(heap_oop)) {
     oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
     if (_g1->in_cset_fast_test(obj)) {
       // We're not going to even bother checking whether the object is
       // already forwarded or not, as this usually causes an immediate
       // stall. We'll try to prefetch the object (for write, given that
       // we might need to install the forwarding reference) and we'll
       // get back to it when pop it from the queue
       Prefetch::write(obj->mark_addr(), 0);
       Prefetch::read(obj->mark_addr(), (HeapWordSize*2));
       // slightly paranoid test; I'm trying to catch potential
       // problems before we go into push_on_queue to know where the
       // problem is coming from
       assert((obj == oopDesc::load_decode_heap_oop(p)) ||
              (obj->is_forwarded() &&
                  obj->forwardee() == oopDesc::load_decode_heap_oop(p)),
              "p should still be pointing to obj or to its forwardee");
       _par_scan_state->push_on_queue(p);
     } else {
       _par_scan_state->update_rs(_from, p, _par_scan_state->queue_num());
     }
   }
 }
 template <class T> inline void G1ParPushHeapRSClosure::do_oop_nv(T* p) {
   T heap_oop = oopDesc::load_heap_oop(p);
   if (!oopDesc::is_null(heap_oop)) {
     oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
     if (_g1->in_cset_fast_test(obj)) {
       Prefetch::write(obj->mark_addr(), 0);
       Prefetch::read(obj->mark_addr(), (HeapWordSize*2));
       // Place on the references queue
       _par_scan_state->push_on_queue(p);
     }
   }
 }
 template <class T> inline void G1CMOopClosure::do_oop_nv(T* p) {
   assert(_g1h->is_in_g1_reserved((HeapWord*) p), "invariant");
   assert(!_g1h->is_on_master_free_list(
                     _g1h->heap_region_containing((HeapWord*) p)), "invariant");
   oop obj = oopDesc::load_decode_heap_oop(p);
   if (_cm->verbose_high()) {
     gclog_or_tty->print_cr("[%d] we're looking at location "
                            "*"PTR_FORMAT" = "PTR_FORMAT,
                            _task->task_id(), p, (void*) obj);
   }
   _task->deal_with_reference(obj);
 }
 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_INLINE_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/gc_implementation/g1/g1OopClosures.inline.hpp@d30fa85f9994 (annotated)

src/share/vm/gc_implementation/g1/g1OopClosures.inline.hpp