8289740: Add verification testing during all concurrent phases in G1

Reviewed-by: iwalulya, ayang

test/hotspot/jtreg/gc/g1/TestVerificationInConcurrentCycle.java

@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 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.g1;
+
+/*
+ * @test TestVerificationInConcurrentCycle
+ * @requires vm.gc.G1
+ * @summary Basic testing of various GC pause verification during the G1 concurrent cycle.
+ * @library /test/lib
+ * @build sun.hotspot.WhiteBox
+ * @run driver jdk.test.lib.helpers.ClassFileInstaller sun.hotspot.WhiteBox
+ * @run main/othervm
+ *   -Xbootclasspath/a:.
+ *   -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
+ *   -XX:+VerifyBeforeGC -XX:+VerifyDuringGC -XX:+VerifyAfterGC
+ *   -XX:+G1VerifyBitmaps -XX:+G1VerifyRSetsDuringFullGC -XX:+G1VerifyHeapRegionCodeRoots
+ *   -XX:+VerifyRememberedSets -XX:+VerifyObjectStartArray
+ *   gc.g1.TestVerificationInConcurrentCycle
+ */
+
+import sun.hotspot.WhiteBox;
+import sun.hotspot.gc.GC;
+
+public class TestVerificationInConcurrentCycle {
+
+    private static final WhiteBox WB = WhiteBox.getWhiteBox();
+
+    // All testN() assume initial state is idle, and restore that state.
+
+    private static void testFullGCAt(String at) throws Exception {
+        System.out.println("testSimpleCycle");
+        try {
+            // Run one cycle.
+            WB.concurrentGCRunTo(at);
+            WB.fullGC();
+        } finally {
+            WB.concurrentGCRunToIdle();
+        }
+    }
+
+    private static void testYoungGCAt(String at) throws Exception {
+        System.out.println("testSimpleCycle");
+        try {
+            // Run one cycle.
+            WB.concurrentGCRunTo(at);
+            WB.youngGC();
+        } finally {
+            WB.concurrentGCRunToIdle();
+        }
+    }
+
+    private static void testGCAt(String at) throws Exception {
+        testYoungGCAt(at);
+        testFullGCAt(at);
+    }
+
+    private static void test() throws Exception {
+        try {
+            System.out.println("taking control");
+            WB.concurrentGCAcquireControl();
+            testGCAt(WB.AFTER_MARKING_STARTED);
+            testGCAt(WB.BEFORE_MARKING_COMPLETED);
+            testGCAt(WB.G1_AFTER_REBUILD_STARTED);
+            testGCAt(WB.G1_BEFORE_REBUILD_COMPLETED);
+            testGCAt(WB.G1_AFTER_CLEANUP_STARTED);
+            testGCAt(WB.G1_BEFORE_CLEANUP_COMPLETED);
+        } finally {
+            System.out.println("releasing control");
+            WB.concurrentGCReleaseControl();
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        if (!WB.supportsConcurrentGCBreakpoints()) {
+            throw new RuntimeException("G1 should support GC breakpoints");
+        }
+        test();
+    }
+}