Mercurial > hg > truffle
view src/share/vm/memory/genOopClosures.inline.hpp @ 7263:6ed187f3134b
added unit test for array copy intrinsification
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Tue, 18 Dec 2012 15:22:01 +0100 |
parents | da91efe96a93 |
children | 284953caf7aa |
line wrap: on
line source
/* * 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_MEMORY_GENOOPCLOSURES_INLINE_HPP #define SHARE_VM_MEMORY_GENOOPCLOSURES_INLINE_HPP #include "memory/cardTableRS.hpp" #include "memory/defNewGeneration.hpp" #include "memory/genCollectedHeap.hpp" #include "memory/genOopClosures.hpp" #include "memory/genRemSet.hpp" #include "memory/generation.hpp" #include "memory/sharedHeap.hpp" #include "memory/space.hpp" inline OopsInGenClosure::OopsInGenClosure(Generation* gen) : ExtendedOopClosure(gen->ref_processor()), _orig_gen(gen), _rs(NULL) { set_generation(gen); } inline void OopsInGenClosure::set_generation(Generation* gen) { _gen = gen; _gen_boundary = _gen->reserved().start(); // Barrier set for the heap, must be set after heap is initialized if (_rs == NULL) { GenRemSet* rs = SharedHeap::heap()->rem_set(); assert(rs->rs_kind() == GenRemSet::CardTable, "Wrong rem set kind"); _rs = (CardTableRS*)rs; } } template <class T> inline void OopsInGenClosure::do_barrier(T* p) { assert(generation()->is_in_reserved(p), "expected ref in generation"); T heap_oop = oopDesc::load_heap_oop(p); assert(!oopDesc::is_null(heap_oop), "expected non-null oop"); oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); // If p points to a younger generation, mark the card. if ((HeapWord*)obj < _gen_boundary) { _rs->inline_write_ref_field_gc(p, obj); } } template <class T> inline void OopsInGenClosure::par_do_barrier(T* p) { assert(generation()->is_in_reserved(p), "expected ref in generation"); T heap_oop = oopDesc::load_heap_oop(p); assert(!oopDesc::is_null(heap_oop), "expected non-null oop"); oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); // If p points to a younger generation, mark the card. if ((HeapWord*)obj < gen_boundary()) { rs()->write_ref_field_gc_par(p, obj); } } inline void OopsInKlassOrGenClosure::do_klass_barrier() { assert(_scanned_klass != NULL, "Must be"); _scanned_klass->record_modified_oops(); } // NOTE! Any changes made here should also be made // in FastScanClosure::do_oop_work() template <class T> inline void ScanClosure::do_oop_work(T* p) { T heap_oop = oopDesc::load_heap_oop(p); // Should we copy the obj? if (!oopDesc::is_null(heap_oop)) { oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); if ((HeapWord*)obj < _boundary) { assert(!_g->to()->is_in_reserved(obj), "Scanning field twice?"); oop new_obj = obj->is_forwarded() ? obj->forwardee() : _g->copy_to_survivor_space(obj); oopDesc::encode_store_heap_oop_not_null(p, new_obj); } if (is_scanning_a_klass()) { do_klass_barrier(); } else if (_gc_barrier) { // Now call parent closure do_barrier(p); } } } inline void ScanClosure::do_oop_nv(oop* p) { ScanClosure::do_oop_work(p); } inline void ScanClosure::do_oop_nv(narrowOop* p) { ScanClosure::do_oop_work(p); } // NOTE! Any changes made here should also be made // in ScanClosure::do_oop_work() template <class T> inline void FastScanClosure::do_oop_work(T* p) { T heap_oop = oopDesc::load_heap_oop(p); // Should we copy the obj? if (!oopDesc::is_null(heap_oop)) { oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); if ((HeapWord*)obj < _boundary) { assert(!_g->to()->is_in_reserved(obj), "Scanning field twice?"); oop new_obj = obj->is_forwarded() ? obj->forwardee() : _g->copy_to_survivor_space(obj); oopDesc::encode_store_heap_oop_not_null(p, new_obj); if (is_scanning_a_klass()) { do_klass_barrier(); } else if (_gc_barrier) { // Now call parent closure do_barrier(p); } } } } inline void FastScanClosure::do_oop_nv(oop* p) { FastScanClosure::do_oop_work(p); } inline void FastScanClosure::do_oop_nv(narrowOop* p) { FastScanClosure::do_oop_work(p); } // Note similarity to ScanClosure; the difference is that // the barrier set is taken care of outside this closure. template <class T> inline void ScanWeakRefClosure::do_oop_work(T* p) { assert(!oopDesc::is_null(*p), "null weak reference?"); oop obj = oopDesc::load_decode_heap_oop_not_null(p); // weak references are sometimes scanned twice; must check // that to-space doesn't already contain this object if ((HeapWord*)obj < _boundary && !_g->to()->is_in_reserved(obj)) { oop new_obj = obj->is_forwarded() ? obj->forwardee() : _g->copy_to_survivor_space(obj); oopDesc::encode_store_heap_oop_not_null(p, new_obj); } } inline void ScanWeakRefClosure::do_oop_nv(oop* p) { ScanWeakRefClosure::do_oop_work(p); } inline void ScanWeakRefClosure::do_oop_nv(narrowOop* p) { ScanWeakRefClosure::do_oop_work(p); } #endif // SHARE_VM_MEMORY_GENOOPCLOSURES_INLINE_HPP