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Fix ThreadMXBean returning null thread info

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This commit is contained in:
TheMode 2021-08-19 23:28:27 +02:00
parent 8762e54451
commit 2ef8e957a0
1 changed files with 6 additions and 18 deletions
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24
src/main/java/net/minestom/server/monitoring/BenchmarkManager.java
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@ -31,8 +31,7 @@ import static net.minestom.server.MinecraftServer.*;
* Be aware that this is not the most accurate method, you should use a proper java profiler depending on your needs.
*/
public final class BenchmarkManager {
public static final ThreadMXBean THREAD_MX_BEAN = ManagementFactory.getThreadMXBean();
private static final ThreadMXBean THREAD_MX_BEAN = ManagementFactory.getThreadMXBean();
private static final List<String> THREADS = new ArrayList<>();
static {
@ -46,12 +45,10 @@ public final class BenchmarkManager {
private final Long2LongMap lastUserTimeMap = new Long2LongOpenHashMap();
private final Long2LongMap lastWaitedMap = new Long2LongOpenHashMap();
private final Long2LongMap lastBlockedMap = new Long2LongOpenHashMap();
private final Map<String, ThreadResult> resultMap = new ConcurrentHashMap<>();
private boolean enabled = false;
private volatile boolean stop = false;
private long time;
public void enable(@NotNull Duration duration) {
@ -96,13 +93,11 @@ public final class BenchmarkManager {
return Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory();
}
@NotNull
public Map<String, ThreadResult> getResultMap() {
public @NotNull Map<String, ThreadResult> getResultMap() {
return Collections.unmodifiableMap(resultMap);
}
@NotNull
public Component getCpuMonitoringMessage() {
public @NotNull Component getCpuMonitoringMessage() {
Check.stateCondition(!enabled, "CPU monitoring is only possible when the benchmark manager is enabled.");
TextComponent.Builder benchmarkMessage = Component.text();
for (var resultEntry : resultMap.entrySet()) {
@ -121,23 +116,16 @@ public final class BenchmarkManager {
benchmarkMessage.append(Component.text("% WAITED ", NamedTextColor.GREEN));
benchmarkMessage.append(Component.newline());
}
return benchmarkMessage.build();
}
private void refreshData() {
ThreadInfo[] threadInfo = THREAD_MX_BEAN.getThreadInfo(THREAD_MX_BEAN.getAllThreadIds());
for (ThreadInfo threadInfo2 : threadInfo) {
if (threadInfo2 == null) continue; // Can happen if the thread does not exist
final String name = threadInfo2.getThreadName();
boolean shouldBenchmark = false;
for (String thread : THREADS) {
if (name.startsWith(thread)) {
shouldBenchmark = true;
break;
}
}
if (!shouldBenchmark)
continue;
final boolean shouldBenchmark = THREADS.stream().anyMatch(name::startsWith);
if (!shouldBenchmark) continue;
final long id = threadInfo2.getThreadId();