1 | /* |
2 | * Copyright (c) 2017, Oracle and/or its affiliates. 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 | #include "precompiled.hpp" |
25 | #include "gc/z/zLiveMap.inline.hpp" |
26 | #include "unittest.hpp" |
27 | |
28 | class ZLiveMapTest : public ::testing::Test { |
29 | protected: |
30 | static void strongly_live_for_large_zpage() { |
31 | // Large ZPages only have room for one object. |
32 | ZLiveMap livemap(1); |
33 | |
34 | bool inc_live; |
35 | uintptr_t object = 0u; |
36 | |
37 | // Mark the object strong. |
38 | livemap.set_atomic(object, false /* finalizable */, inc_live); |
39 | |
40 | // Check that both bits are in the same segment. |
41 | ASSERT_EQ(livemap.index_to_segment(0), livemap.index_to_segment(1)); |
42 | |
43 | // Check that the object was marked. |
44 | ASSERT_TRUE(livemap.get(0)); |
45 | |
46 | // Check that the object was strongly marked. |
47 | ASSERT_TRUE(livemap.get(1)); |
48 | |
49 | ASSERT_TRUE(inc_live); |
50 | } |
51 | }; |
52 | |
53 | TEST_F(ZLiveMapTest, strongly_live_for_large_zpage) { |
54 | strongly_live_for_large_zpage(); |
55 | } |
56 | |