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/shenandoahBarrierSetClone.inline.hpp" 27 #include "gc/shenandoah/shenandoahRuntime.hpp" 28 #include "gc/shenandoah/shenandoahThreadLocalData.hpp" 29 #include "runtime/interfaceSupport.inline.hpp" 30 #include "oops/oop.inline.hpp" 31 #include "utilities/copy.hpp" 32 33 void ShenandoahRuntime::write_ref_array_pre_oop_entry(oop* src, oop* dst, size_t length) { 34 ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set(); 35 bs->arraycopy_pre(src, dst, length); 36 } 37 38 void ShenandoahRuntime::write_ref_array_pre_narrow_oop_entry(narrowOop* src, narrowOop* dst, size_t length) { 39 ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set(); 40 bs->arraycopy_pre(src, dst, length); 41 } 42 43 void ShenandoahRuntime::write_ref_array_pre_duinit_oop_entry(oop* src, oop* dst, size_t length) { 44 ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set(); 45 bs->arraycopy_update(src, length); 46 } 47 48 void ShenandoahRuntime::write_ref_array_pre_duinit_narrow_oop_entry(narrowOop* src, narrowOop* dst, size_t length) { 49 ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set(); 50 bs->arraycopy_update(src, length); 51 } 52 53 // Shenandoah pre write barrier slowpath 54 JRT_LEAF(void, ShenandoahRuntime::write_ref_field_pre_entry(oopDesc* orig, JavaThread *thread)) 55 if (orig == NULL) { 56 assert(false, "should be optimized out"); 57 return; 58 } 59 shenandoah_assert_correct(NULL, orig); 60 // store the original value that was in the field reference 61 assert(ShenandoahThreadLocalData::satb_mark_queue(thread).is_active(), "Shouldn't be here otherwise"); 62 ShenandoahThreadLocalData::satb_mark_queue(thread).enqueue_known_active(orig); 63 JRT_END 64 65 JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier(oopDesc* src, oop* load_addr)) 66 return ShenandoahBarrierSet::barrier_set()->load_reference_barrier_mutator(src, load_addr); 67 JRT_END 68 69 JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier_narrow(oopDesc* src, narrowOop* load_addr)) 70 return ShenandoahBarrierSet::barrier_set()->load_reference_barrier_mutator(src, load_addr); 71 JRT_END 72 73 // Shenandoah clone barrier: makes sure that references point to to-space 74 // in cloned objects. 75 JRT_LEAF(void, ShenandoahRuntime::shenandoah_clone_barrier(oopDesc* src)) 76 oop s = oop(src); 77 shenandoah_assert_correct(NULL, s); 78 ShenandoahBarrierSet::barrier_set()->clone_barrier(s); 79 JRT_END