ysr@777: /*
ysr@777:  * Copyright 2001-2007 Sun Microsystems, Inc.  All Rights Reserved.
ysr@777:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ysr@777:  *
ysr@777:  * This code is free software; you can redistribute it and/or modify it
ysr@777:  * under the terms of the GNU General Public License version 2 only, as
ysr@777:  * published by the Free Software Foundation.
ysr@777:  *
ysr@777:  * This code is distributed in the hope that it will be useful, but WITHOUT
ysr@777:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ysr@777:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
ysr@777:  * version 2 for more details (a copy is included in the LICENSE file that
ysr@777:  * accompanied this code).
ysr@777:  *
ysr@777:  * You should have received a copy of the GNU General Public License version
ysr@777:  * 2 along with this work; if not, write to the Free Software Foundation,
ysr@777:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ysr@777:  *
ysr@777:  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
ysr@777:  * CA 95054 USA or visit www.sun.com if you need additional information or
ysr@777:  * have any questions.
ysr@777:  *
ysr@777:  */
ysr@777: 
ysr@777: /*
ysr@777:  * This really ought to be an inline function, but apparently the C++
ysr@777:  * compiler sometimes sees fit to ignore inline declarations.  Sigh.
ysr@777:  */
ysr@777: 
ysr@777: // This must a ifdef'ed because the counting it controls is in a
ysr@777: // perf-critical inner loop.
ysr@777: #define FILTERINTOCSCLOSURE_DOHISTOGRAMCOUNT 0
ysr@777: 
ysr@1280: template <class T> inline void FilterIntoCSClosure::do_oop_nv(T* p) {
ysr@1280:   T heap_oop = oopDesc::load_heap_oop(p);
ysr@1280:   if (!oopDesc::is_null(heap_oop) &&
ysr@1280:       _g1->obj_in_cs(oopDesc::decode_heap_oop_not_null(heap_oop))) {
ysr@777:     _oc->do_oop(p);
ysr@777: #if FILTERINTOCSCLOSURE_DOHISTOGRAMCOUNT
ysr@777:     _dcto_cl->incr_count();
ysr@777: #endif
ysr@777:   }
ysr@777: }
ysr@777: 
ysr@777: #define FILTEROUTOFREGIONCLOSURE_DOHISTOGRAMCOUNT 0
ysr@777: 
ysr@1280: template <class T> inline void FilterOutOfRegionClosure::do_oop_nv(T* p) {
ysr@1280:   T heap_oop = oopDesc::load_heap_oop(p);
ysr@1280:   if (!oopDesc::is_null(heap_oop)) {
ysr@1280:     HeapWord* obj_hw = (HeapWord*)oopDesc::decode_heap_oop_not_null(heap_oop);
ysr@1280:     if (obj_hw < _r_bottom || obj_hw >= _r_end) {
ysr@1280:       _oc->do_oop(p);
ysr@777: #if FILTEROUTOFREGIONCLOSURE_DOHISTOGRAMCOUNT
ysr@1280:       _out_of_region++;
ysr@777: #endif
ysr@1280:     }
ysr@777:   }
ysr@777: }
ysr@777: 
ysr@1280: template <class T> inline void FilterInHeapRegionAndIntoCSClosure::do_oop_nv(T* p) {
ysr@1280:   T heap_oop = oopDesc::load_heap_oop(p);
ysr@1280:   if (!oopDesc::is_null(heap_oop) &&
ysr@1280:       _g1->obj_in_cs(oopDesc::decode_heap_oop_not_null(heap_oop)))
ysr@777:     _oc->do_oop(p);
ysr@777: }
ysr@777: 
ysr@1280: template <class T> inline void FilterAndMarkInHeapRegionAndIntoCSClosure::do_oop_nv(T* p) {
ysr@1280:   T heap_oop = oopDesc::load_heap_oop(p);
ysr@1280:   if (!oopDesc::is_null(heap_oop)) {
ysr@1280:     oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
ysr@777:     HeapRegion* hr = _g1->heap_region_containing((HeapWord*) obj);
ysr@777:     if (hr != NULL) {
ysr@777:       if (hr->in_collection_set())
ysr@777:         _oc->do_oop(p);
ysr@777:       else if (!hr->is_young())
ysr@777:         _cm->grayRoot(obj);
ysr@777:     }
ysr@777:   }
ysr@777: }
ysr@777: 
ysr@1280: // This closure is applied to the fields of the objects that have just been copied.
ysr@1280: template <class T> inline void G1ParScanClosure::do_oop_nv(T* p) {
ysr@1280:   T heap_oop = oopDesc::load_heap_oop(p);
ysr@1280: 
ysr@1280:   if (!oopDesc::is_null(heap_oop)) {
ysr@1280:     oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
ysr@1280:     if (_g1->in_cset_fast_test(obj)) {
ysr@1280:       // We're not going to even bother checking whether the object is
ysr@1280:       // already forwarded or not, as this usually causes an immediate
ysr@1280:       // stall. We'll try to prefetch the object (for write, given that
ysr@1280:       // we might need to install the forwarding reference) and we'll
ysr@1280:       // get back to it when pop it from the queue
ysr@1280:       Prefetch::write(obj->mark_addr(), 0);
ysr@1280:       Prefetch::read(obj->mark_addr(), (HeapWordSize*2));
ysr@1280: 
ysr@1280:       // slightly paranoid test; I'm trying to catch potential
ysr@1280:       // problems before we go into push_on_queue to know where the
ysr@1280:       // problem is coming from
ysr@1280:       assert(obj == oopDesc::load_decode_heap_oop(p),
ysr@1280:              "p should still be pointing to obj");
ysr@1280:       _par_scan_state->push_on_queue(p);
ysr@1280:     } else {
ysr@1280:       _par_scan_state->update_rs(_from, p, _par_scan_state->queue_num());
ysr@1280:     }
ysr@1280:   }
ysr@777: }