1 /*
2 * Copyright (c) 2014, 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 import com.oracle.java.testlibrary.*;
25
26 /*
27 * @test CheckSegmentedCodeCache
28 * @bug 8015774
29 * @summary "Checks VM options related to the segmented code cache"
30 * @library /testlibrary
31 * @run main/othervm CheckSegmentedCodeCache
32 */
33 public class CheckSegmentedCodeCache {
34 // Code heap names
35 private static final String NON_METHOD = "CodeHeap 'non-methods'";
36 private static final String PROFILED = "CodeHeap 'profiled nmethods'";
37 private static final String NON_PROFILED = "CodeHeap 'non-profiled nmethods'";
38
39 private static void verifySegmentedCodeCache(ProcessBuilder pb, boolean enabled) throws Exception {
40 OutputAnalyzer out = new OutputAnalyzer(pb.start());
41 if (enabled) {
42 try {
43 // Non-method code heap should be always available with the segmented code cache
44 out.shouldContain(NON_METHOD);
45 } catch (RuntimeException e) {
46 // TieredCompilation is disabled in a client VM
47 out.shouldContain("TieredCompilation is disabled in this release.");
48 }
49 } else {
50 out.shouldNotContain(NON_METHOD);
51 }
52 out.shouldHaveExitValue(0);
53 }
54
55 private static void verifyCodeHeapNotExists(ProcessBuilder pb, String... heapNames) throws Exception {
56 OutputAnalyzer out = new OutputAnalyzer(pb.start());
57 for (String name : heapNames) {
58 out.shouldNotContain(name);
59 }
60 }
61
62 private static void failsWith(ProcessBuilder pb, String message) throws Exception {
63 OutputAnalyzer out = new OutputAnalyzer(pb.start());
64 out.shouldContain(message);
65 out.shouldHaveExitValue(1);
66 }
67
68 /**
69 * Check the result of segmented code cache related VM options.
70 */
71 public static void main(String[] args) throws Exception {
72 ProcessBuilder pb;
73
74 // Disabled with ReservedCodeCacheSize < 240MB
75 pb = ProcessTools.createJavaProcessBuilder("-XX:ReservedCodeCacheSize=239m",
76 "-XX:+PrintCodeCache", "-version");
77 verifySegmentedCodeCache(pb, false);
78
79 // Disabled without TieredCompilation
80 pb = ProcessTools.createJavaProcessBuilder("-XX:-TieredCompilation",
81 "-XX:+PrintCodeCache", "-version");
82 verifySegmentedCodeCache(pb, false);
83
84 // Enabled with TieredCompilation and ReservedCodeCacheSize >= 240MB
85 pb = ProcessTools.createJavaProcessBuilder("-XX:+TieredCompilation",
86 "-XX:ReservedCodeCacheSize=240m",
87 "-XX:+PrintCodeCache", "-version");
88 verifySegmentedCodeCache(pb, true);
89
90 // Always enabled if SegmentedCodeCache is set
91 pb = ProcessTools.createJavaProcessBuilder("-XX:+SegmentedCodeCache",
92 "-XX:-TieredCompilation",
93 "-XX:ReservedCodeCacheSize=239m",
94 "-XX:+PrintCodeCache", "-version");
95 verifySegmentedCodeCache(pb, true);
96
97 // The profiled and non-profiled code heaps should not be available in
98 // interpreter-only mode
99 pb = ProcessTools.createJavaProcessBuilder("-XX:+SegmentedCodeCache",
100 "-Xint",
101 "-XX:+PrintCodeCache", "-version");
102 verifyCodeHeapNotExists(pb, PROFILED, NON_PROFILED);
103 pb = ProcessTools.createJavaProcessBuilder("-XX:+SegmentedCodeCache",
104 "-XX:TieredStopAtLevel=0",
105 "-XX:+PrintCodeCache", "-version");
106 verifyCodeHeapNotExists(pb, PROFILED, NON_PROFILED);
107
108 // If we stop compilation at CompLevel_simple
109 pb = ProcessTools.createJavaProcessBuilder("-XX:+SegmentedCodeCache",
110 "-XX:TieredStopAtLevel=1",
111 "-XX:+PrintCodeCache", "-version");
112 verifyCodeHeapNotExists(pb, PROFILED);
113
114 // Fails with too small non-method code heap size
115 pb = ProcessTools.createJavaProcessBuilder("-XX:NonMethodCodeHeapSize=100K");
116 failsWith(pb, "Invalid NonMethodCodeHeapSize");
117
118 // Fails if code heap sizes do not add up
119 pb = ProcessTools.createJavaProcessBuilder("-XX:+SegmentedCodeCache",
120 "-XX:ReservedCodeCacheSize=10M",
121 "-XX:NonMethodCodeHeapSize=5M",
122 "-XX:ProfiledCodeHeapSize=5M",
123 "-XX:NonProfiledCodeHeapSize=5M");
124 failsWith(pb, "Invalid code heap sizes");
125
126 // Fails if not enough space for VM internal code
127 pb = ProcessTools.createJavaProcessBuilder("-XX:+SegmentedCodeCache",
128 "-XX:ReservedCodeCacheSize=1700K",
129 "-XX:InitialCodeCacheSize=100K");
130 failsWith(pb, "Not enough space in non-method code heap to run VM");
131 }
132 }