ysr@777: /*
tonyp@3464:  * Copyright (c) 2001, 2012, Oracle and/or its affiliates. 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:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
ysr@777:  *
ysr@777:  */
ysr@777: 
stefank@2314: #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_INLINE_HPP
stefank@2314: #define SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_INLINE_HPP
stefank@2314: 
tonyp@2968: #include "gc_implementation/g1/concurrentMark.inline.hpp"
stefank@2314: #include "gc_implementation/g1/g1CollectedHeap.hpp"
stefank@2314: #include "gc_implementation/g1/g1OopClosures.hpp"
stefank@2314: #include "gc_implementation/g1/g1RemSet.hpp"
johnc@3954: #include "gc_implementation/g1/heapRegionRemSet.hpp"
stefank@2314: 
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: 
tonyp@3464: template <class T>
tonyp@3464: 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:   }
ysr@777: }
ysr@777: 
tonyp@3464: template <class T>
tonyp@3464: 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@1280:     }
ysr@777:   }
ysr@777: }
ysr@777: 
ysr@1280: // This closure is applied to the fields of the objects that have just been copied.
tonyp@3464: template <class T>
tonyp@3464: 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
johnc@3322:       assert((obj == oopDesc::load_decode_heap_oop(p)) ||
johnc@3322:              (obj->is_forwarded() &&
johnc@3322:                  obj->forwardee() == oopDesc::load_decode_heap_oop(p)),
johnc@3322:              "p should still be pointing to obj or to its forwardee");
johnc@3322: 
ysr@1280:       _par_scan_state->push_on_queue(p);
ysr@1280:     } else {
tschatzl@6329:       _par_scan_state->update_rs(_from, p, _worker_id);
ysr@1280:     }
ysr@1280:   }
ysr@777: }
iveresov@1696: 
tonyp@3464: template <class T>
tonyp@3464: inline void G1ParPushHeapRSClosure::do_oop_nv(T* p) {
iveresov@1696:   T heap_oop = oopDesc::load_heap_oop(p);
iveresov@1696: 
iveresov@1696:   if (!oopDesc::is_null(heap_oop)) {
iveresov@1696:     oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
iveresov@1696:     if (_g1->in_cset_fast_test(obj)) {
iveresov@1696:       Prefetch::write(obj->mark_addr(), 0);
iveresov@1696:       Prefetch::read(obj->mark_addr(), (HeapWordSize*2));
johnc@2060: 
johnc@2060:       // Place on the references queue
iveresov@1696:       _par_scan_state->push_on_queue(p);
iveresov@1696:     }
iveresov@1696:   }
iveresov@1696: }
johnc@2060: 
tonyp@3464: template <class T>
tonyp@3464: inline void G1CMOopClosure::do_oop_nv(T* p) {
tonyp@2968:   assert(_g1h->is_in_g1_reserved((HeapWord*) p), "invariant");
tonyp@2968:   assert(!_g1h->is_on_master_free_list(
tonyp@2968:                     _g1h->heap_region_containing((HeapWord*) p)), "invariant");
tonyp@2968: 
tonyp@2968:   oop obj = oopDesc::load_decode_heap_oop(p);
tonyp@2968:   if (_cm->verbose_high()) {
johnc@4173:     gclog_or_tty->print_cr("[%u] we're looking at location "
tonyp@2968:                            "*"PTR_FORMAT" = "PTR_FORMAT,
johnc@4173:                            _task->worker_id(), p, (void*) obj);
tonyp@2968:   }
tonyp@2968:   _task->deal_with_reference(obj);
tonyp@2968: }
stefank@2314: 
tonyp@3464: template <class T>
tonyp@3464: inline void G1RootRegionScanClosure::do_oop_nv(T* p) {
tonyp@3464:   T heap_oop = oopDesc::load_heap_oop(p);
tonyp@3464:   if (!oopDesc::is_null(heap_oop)) {
tonyp@3464:     oop obj = oopDesc::decode_heap_oop_not_null(heap_oop);
tonyp@3464:     HeapRegion* hr = _g1h->heap_region_containing((HeapWord*) obj);
tonyp@3464:     if (hr != NULL) {
tonyp@3464:       _cm->grayRoot(obj, obj->size(), _worker_id, hr);
tonyp@3464:     }
tonyp@3464:   }
tonyp@3464: }
tonyp@3464: 
johnc@3466: template <class T>
johnc@3466: inline void G1Mux2Closure::do_oop_nv(T* p) {
johnc@3466:   // Apply first closure; then apply the second.
johnc@3466:   _c1->do_oop(p);
johnc@3466:   _c2->do_oop(p);
johnc@3466: }
johnc@3466: 
johnc@3466: template <class T>
johnc@3466: inline void G1TriggerClosure::do_oop_nv(T* p) {
johnc@3466:   // Record that this closure was actually applied (triggered).
johnc@3466:   _triggered = true;
johnc@3466: }
johnc@3466: 
johnc@3466: template <class T>
johnc@3466: inline void G1InvokeIfNotTriggeredClosure::do_oop_nv(T* p) {
johnc@3466:   if (!_trigger_cl->triggered()) {
johnc@3466:     _oop_cl->do_oop(p);
johnc@3466:   }
johnc@3466: }
johnc@3466: 
johnc@3466: template <class T>
johnc@3466: inline void G1UpdateRSOrPushRefOopClosure::do_oop_nv(T* p) {
johnc@3466:   oop obj = oopDesc::load_decode_heap_oop(p);
johnc@3466: #ifdef ASSERT
johnc@3466:   // can't do because of races
johnc@3466:   // assert(obj == NULL || obj->is_oop(), "expected an oop");
johnc@3466: 
johnc@3466:   // Do the safe subset of is_oop
johnc@3466:   if (obj != NULL) {
johnc@3466: #ifdef CHECK_UNHANDLED_OOPS
johnc@3466:     oopDesc* o = obj.obj();
johnc@3466: #else
johnc@3466:     oopDesc* o = obj;
johnc@3466: #endif // CHECK_UNHANDLED_OOPS
johnc@3466:     assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned");
johnc@3466:     assert(Universe::heap()->is_in_reserved(obj), "must be in heap");
johnc@3466:   }
johnc@3466: #endif // ASSERT
johnc@3466: 
johnc@3466:   assert(_from != NULL, "from region must be non-NULL");
johnc@3954:   assert(_from->is_in_reserved(p), "p is not in from");
johnc@3466: 
johnc@3466:   HeapRegion* to = _g1->heap_region_containing(obj);
johnc@3466:   if (to != NULL && _from != to) {
johnc@3466:     // The _record_refs_into_cset flag is true during the RSet
johnc@3466:     // updating part of an evacuation pause. It is false at all
johnc@3466:     // other times:
johnc@3466:     //  * rebuilding the rembered sets after a full GC
johnc@3466:     //  * during concurrent refinement.
johnc@3466:     //  * updating the remembered sets of regions in the collection
johnc@3466:     //    set in the event of an evacuation failure (when deferred
johnc@3466:     //    updates are enabled).
johnc@3466: 
johnc@3466:     if (_record_refs_into_cset && to->in_collection_set()) {
johnc@3466:       // We are recording references that point into the collection
johnc@3466:       // set and this particular reference does exactly that...
johnc@3466:       // If the referenced object has already been forwarded
johnc@3466:       // to itself, we are handling an evacuation failure and
johnc@3466:       // we have already visited/tried to copy this object
johnc@3466:       // there is no need to retry.
johnc@3466:       if (!self_forwarded(obj)) {
johnc@3466:         assert(_push_ref_cl != NULL, "should not be null");
johnc@3466:         // Push the reference in the refs queue of the G1ParScanThreadState
johnc@3466:         // instance for this worker thread.
johnc@3466:         _push_ref_cl->do_oop(p);
johnc@3466:       }
johnc@3466: 
johnc@3466:       // Deferred updates to the CSet are either discarded (in the normal case),
johnc@3466:       // or processed (if an evacuation failure occurs) at the end
johnc@3466:       // of the collection.
johnc@3466:       // See G1RemSet::cleanup_after_oops_into_collection_set_do().
johnc@3954:       return;
johnc@3466:     }
johnc@3954: 
johnc@3954:     // We either don't care about pushing references that point into the
johnc@3954:     // collection set (i.e. we're not during an evacuation pause) _or_
johnc@3954:     // the reference doesn't point into the collection set. Either way
johnc@3954:     // we add the reference directly to the RSet of the region containing
johnc@3954:     // the referenced object.
johnc@3954:     assert(to->rem_set() != NULL, "Need per-region 'into' remsets.");
johnc@3954:     to->rem_set()->add_reference(p, _worker_i);
johnc@3466:   }
johnc@3466: }
johnc@3466: 
stefank@2314: #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_INLINE_HPP