1 /* 2 * Copyright (c) 2018, Red Hat, Inc. All rights reserved. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. 7 * 8 * This code is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 * version 2 for more details (a copy is included in the LICENSE file that 12 * accompanied this code). 13 * 14 * You should have received a copy of the GNU General Public License version 15 * 2 along with this work; if not, write to the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 * 22 */ 23 24 #include "precompiled.hpp" 25 #include "gc/shenandoah/shenandoahBarrierSet.inline.hpp" 26 #include "gc/shenandoah/shenandoahRuntime.hpp" 27 #include "gc/shenandoah/shenandoahThreadLocalData.hpp" 28 #include "runtime/interfaceSupport.inline.hpp" 29 #include "oops/oop.inline.hpp" 30 31 void ShenandoahRuntime::write_ref_array_pre_oop_entry(oop* src, oop* dst, size_t length) { 32 ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set(); 33 bs->arraycopy_pre(src, dst, length); 34 } 35 36 void ShenandoahRuntime::write_ref_array_pre_narrow_oop_entry(narrowOop* src, narrowOop* dst, size_t length) { 37 ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set(); 38 bs->arraycopy_pre(src, dst, length); 39 } 40 41 void ShenandoahRuntime::write_ref_array_pre_duinit_oop_entry(oop* src, oop* dst, size_t length) { 42 ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set(); 43 bs->arraycopy_update(src, length); 44 } 45 46 void ShenandoahRuntime::write_ref_array_pre_duinit_narrow_oop_entry(narrowOop* src, narrowOop* dst, size_t length) { 47 ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set(); 48 bs->arraycopy_update(src, length); 49 } 50 51 // Shenandoah pre write barrier slowpath 52 JRT_LEAF(void, ShenandoahRuntime::write_ref_field_pre_entry(oopDesc* orig, JavaThread *thread)) 53 if (orig == NULL) { 54 assert(false, "should be optimized out"); 55 return; 56 } 57 shenandoah_assert_correct(NULL, orig); 58 // store the original value that was in the field reference 59 assert(ShenandoahThreadLocalData::satb_mark_queue(thread).is_active(), "Shouldn't be here otherwise"); 60 ShenandoahThreadLocalData::satb_mark_queue(thread).enqueue_known_active(orig); 61 JRT_END 62 63 JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier(oopDesc* src)) 64 return ShenandoahBarrierSet::barrier_set()->load_reference_barrier_mutator(src, (oop*)NULL); 65 JRT_END 66 67 JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier_fixup(oopDesc* src, oop* load_addr)) 68 return ShenandoahBarrierSet::barrier_set()->load_reference_barrier_mutator(src, load_addr); 69 JRT_END 70 71 JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier_fixup_narrow(oopDesc* src, narrowOop* load_addr)) 72 return ShenandoahBarrierSet::barrier_set()->load_reference_barrier_mutator(src, load_addr); 73 JRT_END 74 75 // Shenandoah clone barrier: makes sure that references point to to-space 76 // in cloned objects. 77 JRT_LEAF(void, ShenandoahRuntime::shenandoah_clone_barrier(oopDesc* s, oopDesc* d, size_t length)) 78 oop src = oop(s); 79 oop dst = oop(d); 80 shenandoah_assert_correct(NULL, src); 81 shenandoah_assert_correct(NULL, dst); 82 ShenandoahBarrierSet::barrier_set()->clone_barrier(src); 83 RawAccessBarrier<IS_NOT_NULL>::clone(src, dst, length); 84 JRT_END 85 86 JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier_native(oopDesc * src)) 87 return (oopDesc*) ShenandoahBarrierSet::barrier_set()->oop_load_from_native_barrier(oop(src)); 88 JRT_END