- * The following example records events using the default configuration and - * prints the Garbage Collection, CPU Load and JVM Information event. + * The following example, shows how to record events using the default + * configuration and print the Garbage Collection, CPU Load and JVM Information + * event to standard out. * *
*
- * var c = Configuration.getConfiguration("default");
- * try (var rs = new RecordingStream(c)) {
+ * Configuration c = Configuration.getConfiguration("default");
+ * try (RecordingStream rs = new RecordingStream(c)) {
* rs.onEvent("jdk.GarbageCollection", System.out::println);
* rs.onEvent("jdk.CPULoad", System.out::println);
* rs.onEvent("jdk.JVMInformation", System.out::println);
@@ -67,24 +68,10 @@
public final class RecordingStream implements AutoCloseable, EventStream {
private final Recording recording;
- private final EventDirectoryStream stream;
+ private final EventDirectoryStream directoryStream;
/**
* Creates an event stream for the current JVM (Java Virtual Machine).
- *
- * The following example shows how to create a recording stream that prints
- * CPU usage and information about garbage collections.
- *
- *
- *
- * try (var rs = new RecordingStream()) {
- * rs.enable("jdk.GarbageCollection");
- * rs.enable("jdk.CPULoad").withPeriod(Duration.ofSeconds(1));
- * rs.onEvent(System.out::println);
- * rs.start();
- * }
- *
- *
*
* @throws IllegalStateException if Flight Recorder can't be created (for
* example, if the Java Virtual Machine (JVM) lacks Flight Recorder
@@ -100,8 +87,9 @@
this.recording = new Recording();
this.recording.setFlushInterval(Duration.ofMillis(1000));
try {
- this.stream = new EventDirectoryStream(acc, null, SecuritySupport.PRIVILIGED, true);
+ this.directoryStream = new EventDirectoryStream(acc, null, SecuritySupport.PRIVILIGED, true);
} catch (IOException ioe) {
+ this.recording.close();
throw new IllegalStateException(ioe.getMessage());
}
}
@@ -274,56 +262,6 @@
recording.setMaxSize(maxSize);
}
- @Override
- public void onEvent(String eventName, Consumer action) {
- stream.onEvent(eventName, action);
- }
-
- @Override
- public void onEvent(Consumer action) {
- stream.onEvent(action);
- }
-
- @Override
- public void onFlush(Runnable action) {
- stream.onFlush(action);
- }
-
- @Override
- public void onClose(Runnable action) {
- stream.onClose(action);
- }
-
- @Override
- public void close() {
- recording.close();
- stream.close();
- }
-
- @Override
- public boolean remove(Object action) {
- return stream.remove(action);
- }
-
- @Override
- public void start() {
- PlatformRecording pr = PrivateAccess.getInstance().getPlatformRecording(recording);
- long startNanos = pr.start();
- stream.start(startNanos);
- }
-
- @Override
- public void startAsync() {
- PlatformRecording pr = PrivateAccess.getInstance().getPlatformRecording(recording);
- long startNanos = pr.start();
- stream.startAsync(startNanos);
- }
-
- @Override
- public void awaitTermination(Duration timeout) {
- stream.awaitTermination(timeout);
- }
-
/**
* Determines how often events are made available for streaming.
*
@@ -339,32 +277,82 @@
}
@Override
- public void awaitTermination() {
- stream.awaitTermination();
- }
-
- @Override
public void setReuse(boolean reuse) {
- stream.setReuse(reuse);
+ directoryStream.setReuse(reuse);
}
@Override
public void setOrdered(boolean ordered) {
- stream.setOrdered(ordered);
+ directoryStream.setOrdered(ordered);
}
@Override
public void setStartTime(Instant startTime) {
- stream.setStartTime(startTime);
+ directoryStream.setStartTime(startTime);
}
@Override
public void setEndTime(Instant endTime) {
- stream.setStartTime(endTime);
+ directoryStream.setStartTime(endTime);
+ }
+
+ @Override
+ public void onEvent(String eventName, Consumer action) {
+ directoryStream.onEvent(eventName, action);
+ }
+
+ @Override
+ public void onEvent(Consumer action) {
+ directoryStream.onEvent(action);
+ }
+
+ @Override
+ public void onFlush(Runnable action) {
+ directoryStream.onFlush(action);
+ }
+
+ @Override
+ public void onClose(Runnable action) {
+ directoryStream.onClose(action);
}
@Override
public void onError(Consumer action) {
- stream.onError(action);
+ directoryStream.onError(action);
+ }
+
+ @Override
+ public void close() {
+ recording.close();
+ directoryStream.close();
+ }
+
+ @Override
+ public boolean remove(Object action) {
+ return directoryStream.remove(action);
+ }
+
+ @Override
+ public void start() {
+ PlatformRecording pr = PrivateAccess.getInstance().getPlatformRecording(recording);
+ long startNanos = pr.start();
+ directoryStream.start(startNanos);
+ }
+
+ @Override
+ public void startAsync() {
+ PlatformRecording pr = PrivateAccess.getInstance().getPlatformRecording(recording);
+ long startNanos = pr.start();
+ directoryStream.startAsync(startNanos);
+ }
+
+ @Override
+ public void awaitTermination(Duration timeout) {
+ directoryStream.awaitTermination(timeout);
+ }
+
+ @Override
+ public void awaitTermination() {
+ directoryStream.awaitTermination();
}
}