71 /**
72 * Verify that heap size will be changed to conform
73 * min and max heap free ratios.
74 *
75 * @param minRatio value of MinHeapFreeRatio option
76 * @param useXminf used Xminf option instead of MinHeapFreeRatio
77 * @param maxRatio value of MaxHeapFreeRatio option
78 * @param useXmaxf used Xmaxf option instead of MaxHeapFreeRatio
79 * @param options additional options for JVM
80 */
81 public static void positiveTest(int minRatio, boolean useXminf,
82 int maxRatio, boolean useXmaxf, boolean shrinkHeapInSteps,
83 LinkedList<String> options) throws Exception {
84
85 LinkedList<String> vmOptions = new LinkedList<>(options);
86 Collections.addAll(vmOptions,
87 (useXminf ? "-Xminf" + minRatio / 100.0 : "-XX:MinHeapFreeRatio=" + minRatio),
88 (useXmaxf ? "-Xmaxf" + maxRatio / 100.0 : "-XX:MaxHeapFreeRatio=" + maxRatio),
89 "-Xmx" + MAX_HEAP_SIZE,
90 "-Xms" + HEAP_SIZE,
91 "-XaddExports:java.base/jdk.internal.misc=ALL-UNNAMED",
92 "-XX:NewSize=" + NEW_SIZE,
93 "-XX:MaxNewSize=" + MAX_NEW_SIZE,
94 "-XX:" + (shrinkHeapInSteps ? '+' : '-') + "ShrinkHeapInSteps",
95 RatioVerifier.class.getName(),
96 Integer.toString(minRatio),
97 Integer.toString(maxRatio),
98 Boolean.toString(shrinkHeapInSteps)
99 );
100
101 ProcessBuilder procBuilder = ProcessTools.createJavaProcessBuilder(vmOptions.toArray(new String[vmOptions.size()]));
102 OutputAnalyzer analyzer = new OutputAnalyzer(procBuilder.start());
103 analyzer.shouldHaveExitValue(0);
104 }
105
106 /**
107 * Verify that VM will fail to start with specified ratios.
108 *
109 * @param minRatio value of MinHeapFreeRatio option
110 * @param useXminf used Xminf option instead of MinHeapFreeRatio
111 * @param maxRatio value of MaxHeapFreeRatio option
112 * @param useXmaxf used Xmaxf option instead of MaxHeapFreeRatio
113 * @param options additional options for JVM
114 */
115 public static void negativeTest(int minRatio, boolean useXminf,
116 int maxRatio, boolean useXmaxf,
117 LinkedList<String> options) throws Exception {
118
119 LinkedList<String> vmOptions = new LinkedList<>(options);
120 Collections.addAll(vmOptions,
121 (useXminf ? "-Xminf" + minRatio / 100.0 : "-XX:MinHeapFreeRatio=" + minRatio),
122 (useXmaxf ? "-Xmaxf" + maxRatio / 100.0 : "-XX:MaxHeapFreeRatio=" + maxRatio),
123 "-XaddExports:java.base/jdk.internal.misc=ALL-UNNAMED",
124 "-version"
125 );
126 ProcessBuilder procBuilder = ProcessTools.createJavaProcessBuilder(vmOptions.toArray(new String[vmOptions.size()]));
127 OutputAnalyzer analyzer = new OutputAnalyzer(procBuilder.start());
128 analyzer.shouldHaveExitValue(1);
129 analyzer.shouldContain("Error: Could not create the Java Virtual Machine.");
130 }
131
132 /**
133 * RatioVerifier will be executed in the tested VM.
134 * It will check that real heap usage after collection lies between MinHeapFreeRatio and MaxHeapFreeRatio.
135 */
136 public static class RatioVerifier {
137
138 private static final Unsafe unsafe = Utils.getUnsafe();
139
140 // Size of byte array that will be allocated
141 public static final int CHUNK_SIZE = 1024;
142 // Length of byte array, that will be added to "garbage" list.
143 public static final int ARRAY_LENGTH = CHUNK_SIZE - Unsafe.ARRAY_BYTE_BASE_OFFSET;
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71 /**
72 * Verify that heap size will be changed to conform
73 * min and max heap free ratios.
74 *
75 * @param minRatio value of MinHeapFreeRatio option
76 * @param useXminf used Xminf option instead of MinHeapFreeRatio
77 * @param maxRatio value of MaxHeapFreeRatio option
78 * @param useXmaxf used Xmaxf option instead of MaxHeapFreeRatio
79 * @param options additional options for JVM
80 */
81 public static void positiveTest(int minRatio, boolean useXminf,
82 int maxRatio, boolean useXmaxf, boolean shrinkHeapInSteps,
83 LinkedList<String> options) throws Exception {
84
85 LinkedList<String> vmOptions = new LinkedList<>(options);
86 Collections.addAll(vmOptions,
87 (useXminf ? "-Xminf" + minRatio / 100.0 : "-XX:MinHeapFreeRatio=" + minRatio),
88 (useXmaxf ? "-Xmaxf" + maxRatio / 100.0 : "-XX:MaxHeapFreeRatio=" + maxRatio),
89 "-Xmx" + MAX_HEAP_SIZE,
90 "-Xms" + HEAP_SIZE,
91 "--add-exports=java.base/jdk.internal.misc=ALL-UNNAMED",
92 "-XX:NewSize=" + NEW_SIZE,
93 "-XX:MaxNewSize=" + MAX_NEW_SIZE,
94 "-XX:" + (shrinkHeapInSteps ? '+' : '-') + "ShrinkHeapInSteps",
95 RatioVerifier.class.getName(),
96 Integer.toString(minRatio),
97 Integer.toString(maxRatio),
98 Boolean.toString(shrinkHeapInSteps)
99 );
100
101 ProcessBuilder procBuilder = ProcessTools.createJavaProcessBuilder(vmOptions.toArray(new String[vmOptions.size()]));
102 OutputAnalyzer analyzer = new OutputAnalyzer(procBuilder.start());
103 analyzer.shouldHaveExitValue(0);
104 }
105
106 /**
107 * Verify that VM will fail to start with specified ratios.
108 *
109 * @param minRatio value of MinHeapFreeRatio option
110 * @param useXminf used Xminf option instead of MinHeapFreeRatio
111 * @param maxRatio value of MaxHeapFreeRatio option
112 * @param useXmaxf used Xmaxf option instead of MaxHeapFreeRatio
113 * @param options additional options for JVM
114 */
115 public static void negativeTest(int minRatio, boolean useXminf,
116 int maxRatio, boolean useXmaxf,
117 LinkedList<String> options) throws Exception {
118
119 LinkedList<String> vmOptions = new LinkedList<>(options);
120 Collections.addAll(vmOptions,
121 (useXminf ? "-Xminf" + minRatio / 100.0 : "-XX:MinHeapFreeRatio=" + minRatio),
122 (useXmaxf ? "-Xmaxf" + maxRatio / 100.0 : "-XX:MaxHeapFreeRatio=" + maxRatio),
123 "--add-exports=java.base/jdk.internal.misc=ALL-UNNAMED",
124 "-version"
125 );
126 ProcessBuilder procBuilder = ProcessTools.createJavaProcessBuilder(vmOptions.toArray(new String[vmOptions.size()]));
127 OutputAnalyzer analyzer = new OutputAnalyzer(procBuilder.start());
128 analyzer.shouldHaveExitValue(1);
129 analyzer.shouldContain("Error: Could not create the Java Virtual Machine.");
130 }
131
132 /**
133 * RatioVerifier will be executed in the tested VM.
134 * It will check that real heap usage after collection lies between MinHeapFreeRatio and MaxHeapFreeRatio.
135 */
136 public static class RatioVerifier {
137
138 private static final Unsafe unsafe = Utils.getUnsafe();
139
140 // Size of byte array that will be allocated
141 public static final int CHUNK_SIZE = 1024;
142 // Length of byte array, that will be added to "garbage" list.
143 public static final int ARRAY_LENGTH = CHUNK_SIZE - Unsafe.ARRAY_BYTE_BASE_OFFSET;
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