1 files changed, 55 insertions, 0 deletions
diff --git a/src/java_tools/junitrunner/java/com/google/testing/junit/runner/internal/junit4/JUnit4TestStackTraceListener.java b/src/java_tools/junitrunner/java/com/google/testing/junit/runner/internal/junit4/JUnit4TestStackTraceListener.java
new file mode 100644
index 0000000000..d1ef844b11
--- /dev/null
+++ b/src/java_tools/junitrunner/java/com/google/testing/junit/runner/internal/junit4/JUnit4TestStackTraceListener.java
@@ -0,0 +1,55 @@
+// Copyright 2015 The Bazel Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.testing.junit.runner.internal.junit4;
+
+import com.google.testing.junit.runner.internal.SignalHandlers;
+import com.google.testing.junit.runner.internal.StackTraces;
+import com.google.testing.junit.runner.internal.Stderr;
+import java.io.PrintStream;
+import javax.inject.Inject;
+import javax.inject.Singleton;
+import org.junit.runner.Description;
+import org.junit.runner.notification.RunListener;
+import sun.misc.Signal;
+import sun.misc.SignalHandler;
+
+/**
+ * A listener than dumps all stack traces when the test receives a SIGTERM.
+ */
+@Singleton
+public class JUnit4TestStackTraceListener extends RunListener  {
+  private final SignalHandlers signalHandlers;
+  private final PrintStream errPrintStream;
+
+  @Inject
+  public JUnit4TestStackTraceListener(
+      SignalHandlers signalHandlers, @Stderr PrintStream errPrintStream) {
+    this.signalHandlers = signalHandlers;
+    this.errPrintStream = errPrintStream;
+  }
+
+  @Override
+  public void testRunStarted(Description description) throws Exception {
+    signalHandlers.installHandler(new Signal("TERM"), new WriteStackTraceSignalHandler());
+  }
+
+  private class WriteStackTraceSignalHandler implements SignalHandler {
+    @Override
+    public void handle(Signal signal) {
+      errPrintStream.println("Dumping stack traces for all threads\n");
+      StackTraces.printAll(errPrintStream);
+    }
+  }
+}