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
arraycopy_barrier_oop_entry(oop * src,oop * dst,size_t length)33 void ShenandoahRuntime::arraycopy_barrier_oop_entry(oop* src, oop* dst, size_t length) {
34 ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set();
35 bs->arraycopy_barrier(src, dst, length);
36 }
37
arraycopy_barrier_narrow_oop_entry(narrowOop * src,narrowOop * dst,size_t length)38 void ShenandoahRuntime::arraycopy_barrier_narrow_oop_entry(narrowOop* src, narrowOop* dst, size_t length) {
39 ShenandoahBarrierSet *bs = ShenandoahBarrierSet::barrier_set();
40 bs->arraycopy_barrier(src, dst, length);
41 }
42
43 // Shenandoah pre write barrier slowpath
44 JRT_LEAF(void, ShenandoahRuntime::write_ref_field_pre_entry(oopDesc* orig, JavaThread *thread))
45 assert(orig != NULL, "should be optimized out");
46 shenandoah_assert_correct(NULL, orig);
47 // store the original value that was in the field reference
48 assert(ShenandoahThreadLocalData::satb_mark_queue(thread).is_active(), "Shouldn't be here otherwise");
49 ShenandoahThreadLocalData::satb_mark_queue(thread).enqueue_known_active(orig);
50 JRT_END
51
52 JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier(oopDesc* src, oop* load_addr))
53 return ShenandoahBarrierSet::barrier_set()->load_reference_barrier_mutator(src, load_addr);
54 JRT_END
55
56 JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier_narrow(oopDesc* src, narrowOop* load_addr))
57 return ShenandoahBarrierSet::barrier_set()->load_reference_barrier_mutator(src, load_addr);
58 JRT_END
59
60 // Shenandoah clone barrier: makes sure that references point to to-space
61 // in cloned objects.
62 JRT_LEAF(void, ShenandoahRuntime::shenandoah_clone_barrier(oopDesc* src))
63 oop s = oop(src);
64 shenandoah_assert_correct(NULL, s);
65 ShenandoahBarrierSet::barrier_set()->clone_barrier(s);
66 JRT_END
67