diff -r 2c3cc4b01880 -r c16ac7a2eba4 src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/StreamConfiguration.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/StreamConfiguration.java	Wed Oct 30 19:43:52 2019 +0100
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 2019, 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.internal.consumer;
+
+import java.time.Instant;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Consumer;
+
+import jdk.jfr.consumer.RecordedEvent;
+import jdk.jfr.internal.Utils;
+import jdk.jfr.internal.consumer.Dispatcher.EventDispatcher;
+
+final class StreamConfiguration {
+    final List<Runnable> closeActions = new ArrayList<>();
+    final List<Runnable> flushActions = new ArrayList<>();
+    final List<EventDispatcher> eventActions = new ArrayList<>();
+    final List<Consumer<Throwable>> errorActions = new ArrayList<>();
+
+    boolean reuse = true;
+    boolean ordered = true;
+    Instant startTime = null;
+    Instant endTime = null;
+    boolean started = false;
+    long startNanos = 0;
+    long endNanos = Long.MAX_VALUE;
+
+    private volatile boolean changed = true;
+
+    public synchronized boolean remove(Object action) {
+        boolean removed = false;
+        removed |= flushActions.removeIf(e -> e == action);
+        removed |= closeActions.removeIf(e -> e == action);
+        removed |= errorActions.removeIf(e -> e == action);
+        removed |= eventActions.removeIf(e -> e.getAction() == action);
+        if (removed) {
+            changed = true;
+        }
+        return removed;
+    }
+
+    public synchronized void addEventAction(String name, Consumer<RecordedEvent> consumer) {
+        eventActions.add(new EventDispatcher(name, consumer));
+        changed = true;
+    }
+
+    public void addEventAction(Consumer<RecordedEvent> action) {
+        addEventAction(null, action);
+    }
+
+    public synchronized void addFlushAction(Runnable action) {
+        flushActions.add(action);
+        changed = true;
+    }
+
+    public synchronized void addCloseAction(Runnable action) {
+        closeActions.add(action);
+        changed = true;
+    }
+
+    public synchronized void addErrorAction(Consumer<Throwable> action) {
+        errorActions.add(action);
+        changed = true;
+    }
+
+    public synchronized void setReuse(boolean reuse) {
+        this.reuse = reuse;
+        changed = true;
+    }
+
+    public synchronized void setOrdered(boolean ordered) {
+        this.ordered = ordered;
+        changed = true;
+    }
+
+    public synchronized void setEndTime(Instant endTime) {
+        this.endTime = endTime;
+        this.endNanos = Utils.timeToNanos(endTime);
+        changed = true;
+    }
+
+    public synchronized void setStartTime(Instant startTime) {
+        this.startTime = startTime;
+        this.startNanos = Utils.timeToNanos(startTime);
+        changed = true;
+    }
+
+    public synchronized void setStartNanos(long startNanos) {
+        this.startNanos = startNanos;
+        changed = true;
+    }
+
+    public synchronized void setStarted(boolean started) {
+        this.started = started;
+        changed = true;
+    }
+
+    public boolean hasChanged() {
+        return changed;
+    }
+}