Mercurial > hg > graal-compiler
view src/share/vm/gc_implementation/g1/g1OopClosures.inline.hpp @ 8002:8391fdd36e1f
Merge
author | dlong |
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date | Sun, 27 Jan 2013 01:07:09 -0800 |
parents | 8a5ea0a9ccc4 |
children | 63a4eb8bcd23 d2907f74462e 86b64209f715 |
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/* * Copyright (c) 2001, 2012, 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" #include "gc_implementation/g1/heapRegionRemSet.hpp" /* * This really ought to be an inline function, but apparently the C++ * compiler sometimes sees fit to ignore inline declarations. Sigh. */ 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); } } 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); } } } // 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("[%u] we're looking at location " "*"PTR_FORMAT" = "PTR_FORMAT, _task->worker_id(), p, (void*) obj); } _task->deal_with_reference(obj); } template <class T> inline void G1RootRegionScanClosure::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); HeapRegion* hr = _g1h->heap_region_containing((HeapWord*) obj); if (hr != NULL) { _cm->grayRoot(obj, obj->size(), _worker_id, hr); } } } template <class T> inline void G1Mux2Closure::do_oop_nv(T* p) { // Apply first closure; then apply the second. _c1->do_oop(p); _c2->do_oop(p); } template <class T> inline void G1TriggerClosure::do_oop_nv(T* p) { // Record that this closure was actually applied (triggered). _triggered = true; } template <class T> inline void G1InvokeIfNotTriggeredClosure::do_oop_nv(T* p) { if (!_trigger_cl->triggered()) { _oop_cl->do_oop(p); } } template <class T> inline void G1UpdateRSOrPushRefOopClosure::do_oop_nv(T* p) { oop obj = oopDesc::load_decode_heap_oop(p); #ifdef ASSERT // can't do because of races // assert(obj == NULL || obj->is_oop(), "expected an oop"); // Do the safe subset of is_oop if (obj != NULL) { #ifdef CHECK_UNHANDLED_OOPS oopDesc* o = obj.obj(); #else oopDesc* o = obj; #endif // CHECK_UNHANDLED_OOPS assert((intptr_t)o % MinObjAlignmentInBytes == 0, "not oop aligned"); assert(Universe::heap()->is_in_reserved(obj), "must be in heap"); } #endif // ASSERT assert(_from != NULL, "from region must be non-NULL"); assert(_from->is_in_reserved(p), "p is not in from"); HeapRegion* to = _g1->heap_region_containing(obj); if (to != NULL && _from != to) { // The _record_refs_into_cset flag is true during the RSet // updating part of an evacuation pause. It is false at all // other times: // * rebuilding the rembered sets after a full GC // * during concurrent refinement. // * updating the remembered sets of regions in the collection // set in the event of an evacuation failure (when deferred // updates are enabled). if (_record_refs_into_cset && to->in_collection_set()) { // We are recording references that point into the collection // set and this particular reference does exactly that... // If the referenced object has already been forwarded // to itself, we are handling an evacuation failure and // we have already visited/tried to copy this object // there is no need to retry. if (!self_forwarded(obj)) { assert(_push_ref_cl != NULL, "should not be null"); // Push the reference in the refs queue of the G1ParScanThreadState // instance for this worker thread. _push_ref_cl->do_oop(p); } // Deferred updates to the CSet are either discarded (in the normal case), // or processed (if an evacuation failure occurs) at the end // of the collection. // See G1RemSet::cleanup_after_oops_into_collection_set_do(). return; } // We either don't care about pushing references that point into the // collection set (i.e. we're not during an evacuation pause) _or_ // the reference doesn't point into the collection set. Either way // we add the reference directly to the RSet of the region containing // the referenced object. assert(to->rem_set() != NULL, "Need per-region 'into' remsets."); to->rem_set()->add_reference(p, _worker_i); } } #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1OOPCLOSURES_INLINE_HPP