List<Edge> detectDeadlock() {
Collection<Map<String, MapLockState>> collection =
(Collection<Map<String, MapLockState>>) callOnAllMembers(new LockInformationCallable());
List<Vertex> graph = new ArrayList<Vertex>();
for (Map<String, MapLockState> mapLockStateMap : collection) {
for (MapLockState map : mapLockStateMap.values()) {
for (Object key : map.getLockOwners().keySet()) {
Vertex owner = new Vertex(map.getLockOwners().get(key));
Vertex requester = new Vertex(map.getLockRequested().get(key));
int index = graph.indexOf(owner);
if (index >= 0) {
owner = graph.get(index);
} else {
graph.add(owner);
}
index = graph.indexOf(requester);
if (index >= 0) {
requester = graph.get(index);
} else {
graph.add(requester);
}
Edge edge = new Edge();
edge.from = requester;
edge.to = owner;
edge.key = key;
edge.mapName = map.getMapName();
edge.globalLock = map.isGlobalLock();
owner.addIncoming(edge);
requester.addOutgoing(edge);
}
}
}
List<Edge> list = new ArrayList<Edge>();
if (graph != null && graph.size() > 0) {
try {
graph.get(0).visit(list);
} catch (RuntimeException e) {
}
}
return list;
}
private void createRuntimeProps(MemberStateImpl memberState) {
Runtime runtime = Runtime.getRuntime();
ThreadMXBean threadMxBean = ManagementFactory.getThreadMXBean();
RuntimeMXBean runtimeMxBean = ManagementFactory.getRuntimeMXBean();
ClassLoadingMXBean clMxBean = ManagementFactory.getClassLoadingMXBean();
MemoryMXBean memoryMxBean = ManagementFactory.getMemoryMXBean();
MemoryUsage heapMemory = memoryMxBean.getHeapMemoryUsage();
MemoryUsage nonHeapMemory = memoryMxBean.getNonHeapMemoryUsage();
Map<String, Long> map = new HashMap<String, Long>();
map.put(
"runtime.availableProcessors", Integer.valueOf(runtime.availableProcessors()).longValue());
map.put("date.startTime", runtimeMxBean.getStartTime());
map.put("seconds.upTime", runtimeMxBean.getUptime());
map.put("memory.maxMemory", runtime.maxMemory());
map.put("memory.freeMemory", runtime.freeMemory());
map.put("memory.totalMemory", runtime.totalMemory());
map.put("memory.heapMemoryMax", heapMemory.getMax());
map.put("memory.heapMemoryUsed", heapMemory.getUsed());
map.put("memory.nonHeapMemoryMax", nonHeapMemory.getMax());
map.put("memory.nonHeapMemoryUsed", nonHeapMemory.getUsed());
map.put("runtime.totalLoadedClassCount", clMxBean.getTotalLoadedClassCount());
map.put(
"runtime.loadedClassCount", Integer.valueOf(clMxBean.getLoadedClassCount()).longValue());
map.put("runtime.unloadedClassCount", clMxBean.getUnloadedClassCount());
map.put("runtime.totalStartedThreadCount", threadMxBean.getTotalStartedThreadCount());
map.put("runtime.threadCount", Integer.valueOf(threadMxBean.getThreadCount()).longValue());
map.put(
"runtime.peakThreadCount", Integer.valueOf(threadMxBean.getPeakThreadCount()).longValue());
map.put(
"runtime.daemonThreadCount",
Integer.valueOf(threadMxBean.getDaemonThreadCount()).longValue());
memberState.setRuntimeProps(map);
}