1 /*
 2  * Copyright Amazon.com Inc. 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 
25 #include "precompiled.hpp"
26 
27 #include "gc/shenandoah/shenandoahCollectorPolicy.hpp"
28 #include "unittest.hpp"
29 
30 TEST(ShenandoahCollectorPolicyTest, track_degen_cycles_sanity) {
31   ShenandoahCollectorPolicy policy;
32   EXPECT_EQ(policy.consecutive_degenerated_gc_count(), 0UL);
33   EXPECT_EQ(policy.generational_should_upgrade_degenerated_gc(), false);
34 }
35 
36 TEST(ShenandoahCollectorPolicyTest, track_degen_cycles_no_upgrade) {
37   ShenandoahCollectorPolicy policy;
38   policy.record_degenerated(true, true, true);
39   policy.record_degenerated(true, true, true);
40   EXPECT_EQ(policy.consecutive_degenerated_gc_count(), 2UL);
41   EXPECT_EQ(policy.generational_should_upgrade_degenerated_gc(), false);
42 }
43 
44 TEST(ShenandoahCollectorPolicyTest, track_degen_cycles_upgrade) {
45   ShenandoahCollectorPolicy policy;
46   policy.record_degenerated(true, true, false);
47   policy.record_degenerated(true, true, false);
48   EXPECT_EQ(policy.consecutive_degenerated_gc_count(), 2UL);
49   EXPECT_EQ(policy.generational_should_upgrade_degenerated_gc(), true);
50 }
51 
52 TEST(ShenandoahCollectorPolicyTest, track_degen_cycles_reset_progress) {
53   ShenandoahCollectorPolicy policy;
54   policy.record_degenerated(true, true, false);
55   policy.record_degenerated(true, true, true);
56   EXPECT_EQ(policy.consecutive_degenerated_gc_count(), 2UL);
57   EXPECT_EQ(policy.generational_should_upgrade_degenerated_gc(), false);
58 }
59 
60 TEST(ShenandoahCollectorPolicyTest, track_degen_cycles_full_reset) {
61   ShenandoahCollectorPolicy policy;
62   policy.record_degenerated(true, true, false);
63   policy.record_success_full();
64   EXPECT_EQ(policy.consecutive_degenerated_gc_count(), 0UL);
65   EXPECT_EQ(policy.generational_should_upgrade_degenerated_gc(), false);
66 }
67 
68 TEST(ShenandoahCollectorPolicyTest, track_degen_cycles_reset) {
69   ShenandoahCollectorPolicy policy;
70   policy.record_degenerated(true, true, false);
71   policy.record_success_concurrent(true, true);
72   EXPECT_EQ(policy.consecutive_degenerated_gc_count(), 0UL);
73   EXPECT_EQ(policy.generational_should_upgrade_degenerated_gc(), false);
74 }