1 /*
2 * Copyright (c) 2018, 2019, Red Hat, Inc. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "gc/shenandoah/shenandoahBarrierSet.inline.hpp"
27 #include "gc/shenandoah/shenandoahBarrierSetClone.inline.hpp"
28 #include "gc/shenandoah/shenandoahRuntime.hpp"
29 #include "gc/shenandoah/shenandoahThreadLocalData.hpp"
30 #include "runtime/interfaceSupport.inline.hpp"
31 #include "oops/oop.inline.hpp"
32 #include "utilities/copy.hpp"
33
arraycopy_barrier_oop_entry(oop * src,oop * dst,size_t length)34 void ShenandoahRuntime::arraycopy_barrier_oop_entry(oop* src, oop* dst, size_t length) {
35 ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set();
36 bs->arraycopy_barrier(src, dst, length);
37 }
38
arraycopy_barrier_narrow_oop_entry(narrowOop * src,narrowOop * dst,size_t length)39 void ShenandoahRuntime::arraycopy_barrier_narrow_oop_entry(narrowOop* src, narrowOop* dst, size_t length) {
40 ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set();
41 bs->arraycopy_barrier(src, dst, length);
42 }
43
44 // Shenandoah pre write barrier slowpath
45 JRT_LEAF(void, ShenandoahRuntime::write_ref_field_pre_entry(oopDesc* orig, JavaThread *thread))
46 assert(orig != NULL, "should be optimized out");
47 shenandoah_assert_correct(NULL, orig);
48 // store the original value that was in the field reference
49 assert(ShenandoahThreadLocalData::satb_mark_queue(thread).is_active(), "Shouldn't be here otherwise");
50 ShenandoahThreadLocalData::satb_mark_queue(thread).enqueue_known_active(orig);
51 JRT_END
52
53 JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier_strong(oopDesc* src, oop* load_addr))
54 return ShenandoahBarrierSet::barrier_set()->load_reference_barrier_mutator(src, load_addr);
55 JRT_END
56
57 JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier_strong_narrow(oopDesc* src, narrowOop* load_addr))
58 return ShenandoahBarrierSet::barrier_set()->load_reference_barrier_mutator(src, load_addr);
59 JRT_END
60
61 // Shenandoah clone barrier: makes sure that references point to to-space
62 // in cloned objects.
63 JRT_LEAF(void, ShenandoahRuntime::shenandoah_clone_barrier(oopDesc* src))
64 oop s = oop(src);
65 shenandoah_assert_correct(NULL, s);
66 ShenandoahBarrierSet::barrier_set()->clone_barrier(s);
67 JRT_END
68
69 JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier_weak(oopDesc * src, oop* load_addr))
70 return (oopDesc*) ShenandoahBarrierSet::barrier_set()->load_reference_barrier<ON_WEAK_OOP_REF, oop>(oop(src), load_addr);
71 JRT_END
72
73 JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier_weak_narrow(oopDesc * src, narrowOop* load_addr))
74 return (oopDesc*) ShenandoahBarrierSet::barrier_set()->load_reference_barrier<ON_WEAK_OOP_REF, narrowOop>(oop(src), load_addr);
75 JRT_END
76
77 JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier_phantom(oopDesc * src, oop* load_addr))
78 return (oopDesc*) ShenandoahBarrierSet::barrier_set()->load_reference_barrier<ON_PHANTOM_OOP_REF, oop>(oop(src), load_addr);
79 JRT_END
80
81 JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier_phantom_narrow(oopDesc * src, narrowOop* load_addr))
82 return (oopDesc*) ShenandoahBarrierSet::barrier_set()->load_reference_barrier<ON_PHANTOM_OOP_REF, narrowOop>(oop(src), load_addr);
83 JRT_END
84