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 package codeheapsize;
24
25 import common.CodeCacheCLITestCase;
26 import common.CodeCacheOptions;
27 import com.oracle.java.testlibrary.ExitCode;
28 import com.oracle.java.testlibrary.Utils;
29 import com.oracle.java.testlibrary.cli.CommandLineOptionTest;
30 import sun.hotspot.code.BlobType;
31 import java.util.Random;
32
33 /**
34 * Test case runner aimed to verify option's consistency.
35 */
36 public class JVMStartupRunner implements CodeCacheCLITestCase.Runner {
37 private static final String INCONSISTENT_CH_SIZES_ERROR
38 = "Invalid code heap sizes.*";
39
40 @Override
41 public void run(CodeCacheCLITestCase.Description testCaseDescription,
42 CodeCacheOptions options) throws Throwable {
43 // Everything should be fine when
44 // sum(all code heap sizes) == reserved CC size
45 CommandLineOptionTest.verifySameJVMStartup(/* expected messages */ null,
46 new String[]{ INCONSISTENT_CH_SIZES_ERROR },
47 "JVM startup should not fail with consistent code heap sizes",
48 "JVM output should not contain warning about inconsistent code "
49 + "heap sizes", ExitCode.OK, options.prepareOptions());
50
51 verifySingleInconsistentValue(options);
52 verifyAllInconsistentValues(options);
53 }
54
55 /**
56 * Verifies that if at least one of three options will have value, such
57 * that sum of all three values will be inconsistent, then JVM startup will
58 * fail.
59 */
60 private static void verifySingleInconsistentValue(CodeCacheOptions options)
61 throws Throwable {
62 verifyHeapSizesSum(options.reserved,
63 scaleCodeHeapSize(options.profiled), options.nonProfiled,
64 options.nonNmethods);
65 verifyHeapSizesSum(options.reserved, options.profiled,
66 scaleCodeHeapSize(options.nonProfiled), options.nonNmethods);
67 verifyHeapSizesSum(options.reserved, options.profiled,
68 options.nonProfiled, scaleCodeHeapSize(options.nonNmethods));
69 }
70
71 /**
72 * Verifies that if all three options will have values such that their sum
73 * is inconsistent with ReservedCodeCacheSize value, then JVM startup will
74 * fail.
75 */
76 private static void verifyAllInconsistentValues(CodeCacheOptions options)
77 throws Throwable {
78 long profiled = options.profiled;
79 long nonProfiled = options.nonProfiled;
80 long nonNMethods = options.nonNmethods;
81
82 while (options.reserved == profiled + nonProfiled + nonNMethods) {
83 profiled = scaleCodeHeapSize(profiled);
84 nonProfiled = scaleCodeHeapSize(nonProfiled);
85 nonNMethods = scaleCodeHeapSize(nonNMethods);
86 }
87
88 verifyHeapSizesSum(options.reserved, profiled, nonProfiled,
89 nonNMethods);
90 }
91
92 private static void verifyHeapSizesSum(long reserved, long profiled,
93 long nonProfiled, long nonNmethods) throws Throwable {
94 // JVM startup expected to fail when
95 // sum(all code heap sizes) != reserved CC size
96 CommandLineOptionTest.verifySameJVMStartup(
97 new String[]{ INCONSISTENT_CH_SIZES_ERROR },
98 /* unexpected messages */ null,
99 "JVM startup should fail with inconsistent code heap size.",
100 "JVM output should contain appropriate error message of code "
101 + "heap sizes are inconsistent",
102 ExitCode.FAIL,
103 CommandLineOptionTest.prepareBooleanFlag(
104 CodeCacheOptions.SEGMENTED_CODE_CACHE, true),
105 CommandLineOptionTest.prepareNumericFlag(
106 BlobType.All.sizeOptionName, reserved),
107 CommandLineOptionTest.prepareNumericFlag(
108 BlobType.MethodProfiled.sizeOptionName, profiled),
109 CommandLineOptionTest.prepareNumericFlag(
110 BlobType.MethodNonProfiled.sizeOptionName, nonProfiled),
111 CommandLineOptionTest.prepareNumericFlag(
112 BlobType.NonNMethod.sizeOptionName, nonNmethods));
113 }
114
115 /**
116 * Returns {@code unscaledSize} value scaled by a random factor from
117 * range (1, 2). If {@code unscaledSize} is not 0, then this
118 * method will return value that won't be equal to {@code unscaledSize}.
119 *
120 * @param unscaledSize The value to be scaled.
121 * @return {@code unscaledSize} value scaled by a factor from range (1, 2).
122 */
123 private static long scaleCodeHeapSize(long unscaledSize) {
124 Random random = Utils.getRandomInstance();
125
126 long scaledSize = unscaledSize;
127 while (scaledSize == unscaledSize && unscaledSize != 0) {
128 float scale = 1.0f + random.nextFloat();
129 scaledSize = (long) Math.ceil(scale * unscaledSize);
130 }
131 return scaledSize;
132 }
133 }