8241881: ZGC: Add tests for JFR events

Reviewed-by: stefank, eosterlund, egahlin

test/jdk/jdk/jfr/event/gc/detailed/TestZAllocationStallEvent.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2020, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 jdk.jfr.event.gc.detailed;
+
+import java.util.List;
+
+import static gc.testlibrary.Allocation.blackHole;
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.test.lib.jfr.EventNames;
+import jdk.test.lib.jfr.Events;
+
+/**
+ * @test TestZAllocationStallEvent
+ * @requires vm.hasJFR & vm.gc.Z
+ * @key jfr
+ * @library /test/lib /test/jdk /test/hotspot/jtreg
+ * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseZGC -Xmx32M jdk.jfr.event.gc.detailed.TestZAllocationStallEvent
+ */
+
+public class TestZAllocationStallEvent {
+    public static void main(String[] args) throws Exception {
+        try (Recording recording = new Recording()) {
+            // Activate the event we are interested in and start recording
+            recording.enable(EventNames.ZAllocationStall);
+            recording.start();
+
+            // Allocate many large objects quickly, to outrun the GC
+            for (int i = 0; i < 100; i++) {
+                blackHole(new byte[16 * 1024 * 1024]);
+            }
+
+            recording.stop();
+
+            // Verify recording
+            List<RecordedEvent> events = Events.fromRecording(recording);
+            System.out.println("Events: " + events.size());
+            Events.hasEvents(events);
+            for (RecordedEvent event : Events.fromRecording(recording)) {
+                Events.assertField(event, "size").atLeast(2L * 1024 * 1024);
+            }
+        }
+    }
+}

test/jdk/jdk/jfr/event/gc/detailed/TestZPageAllocationEvent.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2020, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 jdk.jfr.event.gc.detailed;
+
+import java.util.List;
+
+import static gc.testlibrary.Allocation.blackHole;
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.test.lib.jfr.EventNames;
+import jdk.test.lib.jfr.Events;
+
+/**
+ * @test TestZPageAllocationEvent
+ * @requires vm.hasJFR & vm.gc.Z
+ * @key jfr
+ * @library /test/lib /test/jdk /test/hotspot/jtreg
+ * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseZGC -Xmx32M jdk.jfr.event.gc.detailed.TestZPageAllocationEvent
+ */
+
+public class TestZPageAllocationEvent {
+    public static void main(String[] args) throws Exception {
+        try (Recording recording = new Recording()) {
+            // Activate the event we are interested in and start recording
+            recording.enable(EventNames.ZPageAllocation);
+            recording.start();
+
+            // Allocate objects, to provoke page allocations
+            for (int i = 0; i < 100; i++) {
+                blackHole(new byte[256 * 1024]);
+            }
+
+            recording.stop();
+
+            // Verify recording
+            List<RecordedEvent> events = Events.fromRecording(recording);
+            System.out.println("Events: " + events.size());
+            Events.hasEvents(events);
+            for (RecordedEvent event : Events.fromRecording(recording)) {
+                Events.assertField(event, "size").atLeast(2L * 1024 * 1024);
+            }
+        }
+    }
+}

test/jdk/jdk/jfr/event/gc/detailed/TestZPageCacheFlushEvent.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) 2020, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 jdk.jfr.event.gc.detailed;
+
+import java.util.List;
+
+import static gc.testlibrary.Allocation.blackHole;
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.test.lib.jfr.EventNames;
+import jdk.test.lib.jfr.Events;
+
+/**
+ * @test TestZPageCacheFlushEvent
+ * @requires vm.hasJFR & vm.gc.Z
+ * @key jfr
+ * @library /test/lib /test/jdk /test/hotspot/jtreg
+ * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseZGC -Xmx32M jdk.jfr.event.gc.detailed.TestZPageCacheFlushEvent
+ */
+
+public class TestZPageCacheFlushEvent {
+    public static void main(String[] args) throws Exception {
+        try (Recording recording = new Recording()) {
+            // Activate the event we are interested in and start recording
+            recording.enable(EventNames.ZPageCacheFlush);
+            recording.start();
+
+            // Allocate non-large objects, to fill page cache with non-large pages
+            for (int i = 0; i < 128; i++) {
+                blackHole(new byte[256 * 1024]);
+            }
+
+            // Allocate large objects, to provoke page cache flushing
+            for (int i = 0; i < 10; i++) {
+                blackHole(new byte[7 * 1024 * 1024]);
+            }
+
+            recording.stop();
+
+            // Verify recording
+            List<RecordedEvent> events = Events.fromRecording(recording);
+            System.out.println("Events: " + events.size());
+            Events.hasEvents(events);
+        }
+    }
+}

test/jdk/jdk/jfr/event/gc/detailed/TestZRelocationSetEvent.java

@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2020, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 jdk.jfr.event.gc.detailed;
+
+import java.util.List;
+
+import static gc.testlibrary.Allocation.blackHole;
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.test.lib.jfr.EventNames;
+import jdk.test.lib.jfr.Events;
+
+/**
+ * @test TestZRelocationSetEvent
+ * @requires vm.hasJFR & vm.gc.Z
+ * @key jfr
+ * @library /test/lib /test/jdk /test/hotspot/jtreg
+ * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseZGC -Xmx32M jdk.jfr.event.gc.detailed.TestZRelocationSetEvent
+ */
+
+public class TestZRelocationSetEvent {
+    public static void main(String[] args) throws Exception {
+        try (Recording recording = new Recording()) {
+            // Activate the event we are interested in and start recording
+            recording.enable(EventNames.ZRelocationSet);
+            recording.start();
+
+            // Collect
+            System.gc();
+
+            recording.stop();
+
+            // Verify recording
+            List<RecordedEvent> events = Events.fromRecording(recording);
+            System.out.println("Events: " + events.size());
+            Events.hasEvents(events);
+        }
+    }
+}

test/jdk/jdk/jfr/event/gc/detailed/TestZRelocationSetGroupEvent.java

@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2020, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 jdk.jfr.event.gc.detailed;
+
+import java.util.List;
+
+import static gc.testlibrary.Allocation.blackHole;
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.test.lib.jfr.EventNames;
+import jdk.test.lib.jfr.Events;
+
+/**
+ * @test TestZRelocationSetGroupEvent
+ * @requires vm.hasJFR & vm.gc.Z
+ * @key jfr
+ * @library /test/lib /test/jdk /test/hotspot/jtreg
+ * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseZGC -Xmx32M jdk.jfr.event.gc.detailed.TestZRelocationSetGroupEvent
+ */
+
+public class TestZRelocationSetGroupEvent {
+    public static void main(String[] args) throws Exception {
+        try (Recording recording = new Recording()) {
+            // Activate the event we are interested in and start recording
+            recording.enable(EventNames.ZRelocationSetGroup);
+            recording.start();
+
+            // Collect
+            System.gc();
+
+            recording.stop();
+
+            // Verify recording
+            List<RecordedEvent> events = Events.fromRecording(recording);
+            System.out.println("Events: " + events.size());
+            Events.hasEvents(events);
+        }
+    }
+}

test/jdk/jdk/jfr/event/gc/detailed/TestZUncommitEvent.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2020, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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 jdk.jfr.event.gc.detailed;
+
+import java.util.List;
+
+import static gc.testlibrary.Allocation.blackHole;
+import jdk.jfr.Recording;
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.test.lib.jfr.EventNames;
+import jdk.test.lib.jfr.Events;
+
+/**
+ * @test TestZUncommitEvent
+ * @requires vm.hasJFR & vm.gc.Z
+ * @key jfr
+ * @library /test/lib /test/jdk /test/hotspot/jtreg
+ * @run main/othervm -XX:+UnlockExperimentalVMOptions -XX:+UseZGC -Xms32M -Xmx128M -Xlog:gc,gc+heap -XX:+ZUncommit -XX:ZUncommitDelay=1 jdk.jfr.event.gc.detailed.TestZUncommitEvent
+ */
+
+public class TestZUncommitEvent {
+    public static void main(String[] args) throws Exception {
+        try (Recording recording = new Recording()) {
+            // Activate the event we are interested in and start recording
+            recording.enable(EventNames.ZUncommit);
+            recording.start();
+
+            // Allocate a large object, to force heap usage above min heap size
+            blackHole(new byte[32 * 1024 * 1024]);
+
+            // Collect
+            System.gc();
+
+            // Wait for uncommit to happen
+            Thread.sleep(10 * 1000);
+
+            recording.stop();
+
+            // Verify recording
+            List<RecordedEvent> events = Events.fromRecording(recording);
+            System.out.println("Events: " + events.size());
+            Events.hasEvents(events);
+            for (RecordedEvent event : Events.fromRecording(recording)) {
+                System.out.println("Event:" + event);
+                final long capacityBefore = Events.assertField(event, "capacityBefore").getValue();
+                final long capacityAfter = Events.assertField(event, "capacityAfter").below(capacityBefore).getValue();
+                Events.assertField(event, "uncommitted").equal(capacityBefore - capacityAfter);
+            }
+        }
+    }
+}

test/lib/jdk/test/lib/jfr/EventNames.java

@@ -142,6 +142,12 @@ public class EventNames {
     public final static String GCPhaseParallel = PREFIX + "GCPhaseParallel";
     public final static String GCPhaseConcurrent = PREFIX + "GCPhaseConcurrent";
     public final static String GCPhaseConcurrentLevel1 = PREFIX + "GCPhaseConcurrentLevel1";
+    public final static String ZAllocationStall = PREFIX + "ZAllocationStall";
+    public final static String ZPageAllocation = PREFIX + "ZPageAllocation";
+    public final static String ZPageCacheFlush = PREFIX + "ZPageCacheFlush";
+    public final static String ZRelocationSet = PREFIX + "ZRelocationSet";
+    public final static String ZRelocationSetGroup = PREFIX + "ZRelocationSetGroup";
+    public final static String ZUncommit = PREFIX + "ZUncommit";
 
     // Compiler
     public final static String Compilation = PREFIX + "Compilation";