Bug 574180 - Improve

org.eclipse.test.TracingSuite.DumpTask.dumpStackTraces()

Use similar (better) format from
org.eclipse.jdt.core.tests.model.FreezeMonitor.expectCompletionIn(long)

Change-Id: Ia397d0a52f36ed370c43a5959ca931e0bad52b10
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.releng/+/181909
Tested-by: Platform Bot <platform-bot@eclipse.org>

1 files changed, 23 insertions, 12 deletions

diff --git a/bundles/org.eclipse.test.performance/src/org/eclipse/test/TracingSuite.java b/bundles/org.eclipse.test.performance/src/org/eclipse/test/TracingSuite.java
index 64ee9d37..a1716f3a 100644
--- a/bundles/org.eclipse.test.performance/src/org/eclipse/test/TracingSuite.java
+++ b/bundles/org.eclipse.test.performance/src/org/eclipse/test/TracingSuite.java
@@ -19,13 +19,14 @@ import java.lang.annotation.Inherited;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
+import java.lang.management.ManagementFactory;
+import java.lang.management.ThreadInfo;
+import java.lang.management.ThreadMXBean;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 import java.util.Locale;
-import java.util.Map;
-import java.util.Map.Entry;
 import java.util.Timer;
 import java.util.TimerTask;
 import java.util.concurrent.ConcurrentHashMap;
@@ -233,19 +234,29 @@ public class TracingSuite extends Suite {
             System.gc();
             stream.format("freeMemory (after GC): %11d\n", Runtime.getRuntime().freeMemory());
 
-            Thread main = null;
-            Map<Thread, StackTraceElement[]> stackTraces = Thread.getAllStackTraces();
-            for (Entry<Thread, StackTraceElement[]> entry : stackTraces.entrySet()) {
-                String name = entry.getKey().getName();
+            ThreadMXBean threadStuff = ManagementFactory.getThreadMXBean();
+            ThreadInfo[] allThreads = threadStuff.getThreadInfo(threadStuff.getAllThreadIds(), 200);
+            for (ThreadInfo threadInfo : allThreads) {
+                stream.print("\"");
+                stream.print(threadInfo.getThreadName());
+                stream.print("\": ");
+                stream.print(threadInfo.getThreadState());
+                stream.println();
+                final StackTraceElement[] elements = threadInfo.getStackTrace();
+                for (StackTraceElement element : elements) {
+                    stream.print("    ");
+                    stream.print(element);
+                    stream.println();
+                }
+                stream.println();
+            }
+            for (Thread t : Thread.getAllStackTraces().keySet()) {
+                String name = t.getName();
                 if ("main".equals(name)) {
-                    main = entry.getKey();
+                    return t;
                 }
-                StackTraceElement[] stack = entry.getValue();
-                ThreadDump exception = new ThreadDump("for thread \"" + name + "\"");
-                exception.setStackTrace(stack);
-                exception.printStackTrace(stream);
             }
-            return main;
+            return null;
         }
     }