1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158
|
/*
* Copyright (c) 2020, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package gc;
/*
* @test TestConcurrentGCBreakpoints
* @summary Test of WhiteBox concurrent GC control.
* @library /test/lib
* @build jdk.test.whitebox.WhiteBox
* @run driver jdk.test.lib.helpers.ClassFileInstaller jdk.test.whitebox.WhiteBox
* @run main/othervm
* -Xbootclasspath/a:.
* -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
* gc.TestConcurrentGCBreakpoints
*/
import jdk.test.whitebox.WhiteBox;
import jdk.test.whitebox.gc.GC;
public class TestConcurrentGCBreakpoints {
private static final WhiteBox WB = WhiteBox.getWhiteBox();
private static void testG1SpecificBreakpoints() {
WB.concurrentGCRunTo(WB.G1_AFTER_REBUILD_STARTED);
WB.concurrentGCRunTo(WB.G1_BEFORE_REBUILD_COMPLETED);
WB.concurrentGCRunTo(WB.G1_AFTER_CLEANUP_STARTED);
WB.concurrentGCRunTo(WB.G1_BEFORE_CLEANUP_COMPLETED);
}
// All testN() assume initial state is idle, and restore that state.
// Step through the common breakpoints.
private static void testSimpleCycle() throws Exception {
System.out.println("testSimpleCycle");
try {
// Run one cycle.
WB.concurrentGCRunTo(WB.AFTER_MARKING_STARTED);
WB.concurrentGCRunTo(WB.BEFORE_MARKING_COMPLETED);
if (GC.G1.isSelected()) {
testG1SpecificBreakpoints();
}
WB.concurrentGCRunToIdle();
// Run a second cycle.
WB.concurrentGCRunTo(WB.AFTER_MARKING_STARTED);
WB.concurrentGCRunTo(WB.BEFORE_MARKING_COMPLETED);
if (GC.G1.isSelected()) {
testG1SpecificBreakpoints();
}
WB.concurrentGCRunToIdle();
} finally {
WB.concurrentGCRunToIdle();
}
}
// Verify attempted wraparound detected and reported.
private static void testEndBeforeBreakpointError() throws Exception {
System.out.println("testEndBeforeBreakpointError");
try {
WB.concurrentGCRunTo(WB.BEFORE_MARKING_COMPLETED);
try {
WB.concurrentGCRunTo(WB.AFTER_MARKING_STARTED);
} catch (IllegalStateException e) {
// Reached end of cycle before desired breakpoint.
}
} finally {
WB.concurrentGCRunToIdle();
}
}
// Verify attempted wraparound detected and reported without throw.
private static void testEndBeforeBreakpoint() throws Exception {
System.out.println("testEndBeforeBreakpoint");
try {
WB.concurrentGCRunTo(WB.BEFORE_MARKING_COMPLETED);
if (WB.concurrentGCRunTo(WB.AFTER_MARKING_STARTED, false)) {
throw new RuntimeException("Unexpected wraparound");
}
} finally {
WB.concurrentGCRunToIdle();
}
}
private static void testUnknownBreakpoint() throws Exception {
System.out.println("testUnknownBreakpoint");
try {
if (WB.concurrentGCRunTo("UNKNOWN BREAKPOINT", false)) {
throw new RuntimeException("RunTo UNKNOWN BREAKPOINT");
}
} finally {
WB.concurrentGCRunToIdle();
}
}
private static void test() throws Exception {
try {
System.out.println("taking control");
WB.concurrentGCAcquireControl();
testSimpleCycle();
testEndBeforeBreakpointError();
testEndBeforeBreakpoint();
testUnknownBreakpoint();
} finally {
System.out.println("releasing control");
WB.concurrentGCReleaseControl();
}
}
private static boolean expectSupported() {
return GC.G1.isSelected() ||
GC.Z.isSelected() ||
GC.Shenandoah.isSelected();
}
private static boolean expectUnsupported() {
return GC.Serial.isSelected() ||
GC.Parallel.isSelected() ||
GC.Epsilon.isSelected();
}
public static void main(String[] args) throws Exception {
boolean supported = WB.supportsConcurrentGCBreakpoints();
if (expectSupported()) {
if (supported) {
test();
} else {
throw new RuntimeException("Expected support");
}
} else if (expectUnsupported()) {
if (supported) {
throw new RuntimeException("Unexpected support");
}
} else {
throw new RuntimeException("Unknown GC");
}
}
}
|