Merge 5430c62d61 into 5c050c66ca

src/main/java/net/minestom/server/MinecraftServer.java

@@ -194,6 +194,10 @@ public final class MinecraftServer {
         return !isStarted();
     }
 
+    public static boolean isStopped() {
+        return serverProcess.isStopped();
+    }
+
     /**
      * Gets the chunk view distance of the server.
      * <p>

src/main/java/net/minestom/server/ServerProcess.java

@@ -137,10 +137,29 @@ public interface ServerProcess extends Snapshotable {
 
     void start(@NotNull SocketAddress socketAddress);
 
+    /**
+     * Request the server to stop
+     */
     void stop();
 
+    /**
+     * Shutdown all sub processes
+     * <p>
+     * Order:
+     * <ul>
+     * {@link SchedulerManager#shutdown()}
+     * {@link ConnectionManager#shutdown()}
+     * {@link Server#stop()}
+     * {@link BenchmarkManager#disable()}
+     * {@link ThreadDispatcher#shutdown()}
+     * </ul>
+     */
+    void shutdown();
+
     boolean isAlive();
 
+    boolean isStopped();
+
     @ApiStatus.NonExtendable
     interface Ticker {
         void tick(long nanoTime);

src/main/java/net/minestom/server/ServerProcessImpl.java

@@ -71,6 +71,7 @@ final class ServerProcessImpl implements ServerProcess {
     private final Ticker ticker;
 
     private final AtomicBoolean started = new AtomicBoolean();
+    private final AtomicBoolean stopping = new AtomicBoolean();
     private final AtomicBoolean stopped = new AtomicBoolean();
 
     public ServerProcessImpl() throws IOException {
@@ -230,6 +231,13 @@ final class ServerProcessImpl implements ServerProcess {
 
     @Override
     public void stop() {
+        if (!stopping.compareAndSet(false, true))
+            return;
+        LOGGER.info("Stopping " + MinecraftServer.getBrandName() + " server...");
+    }
+
+    @Override
+    public void shutdown() {
         if (!stopped.compareAndSet(false, true))
             return;
         LOGGER.info("Stopping " + MinecraftServer.getBrandName() + " server.");
@@ -242,9 +250,14 @@ final class ServerProcessImpl implements ServerProcess {
         LOGGER.info(MinecraftServer.getBrandName() + " server stopped successfully.");
     }
 
+    @Override
+    public boolean isStopped() {
+        return stopped.get();
+    }
+
     @Override
     public boolean isAlive() {
-        return started.get() && !stopped.get();
+        return started.get() && !stopping.get() && !stopped.get();
     }
 
     @Override

src/main/java/net/minestom/server/thread/TickSchedulerThread.java

@@ -23,6 +23,7 @@ public final class TickSchedulerThread extends MinestomThread {
     public void run() {
         long ticks = 0;
         long baseTime = System.nanoTime();
+
         while (serverProcess.isAlive()) {
             final long tickStart = System.nanoTime();
             try {
@@ -32,16 +33,20 @@ public final class TickSchedulerThread extends MinestomThread {
             }
 
             ticks++;
-            long nextTickTime = baseTime + ticks * TICK_TIME_NANOS;
-            waitUntilNextTick(nextTickTime);
-            // Check if the server can not keep up with the tickrate
-            // if it gets too far behind, reset the ticks & baseTime
-            // to avoid running too many ticks at once
-            if (System.nanoTime() > nextTickTime + TICK_TIME_NANOS * ServerFlag.SERVER_MAX_TICK_CATCH_UP) {
-                baseTime = System.nanoTime();
-                ticks = 0;
+            // don't wait next tick if server is stopping/stopped
+            if (serverProcess.isAlive()) {
+                long nextTickTime = baseTime + ticks * TICK_TIME_NANOS;
+                waitUntilNextTick(nextTickTime);
+                // Check if the server can not keep up with the tickrate
+                // if it gets too far behind, reset the ticks & baseTime
+                // to avoid running too many ticks at once
+                if (System.nanoTime() > nextTickTime + TICK_TIME_NANOS * ServerFlag.SERVER_MAX_TICK_CATCH_UP) {
+                    baseTime = System.nanoTime();
+                    ticks = 0;
+                }
             }
         }
+        serverProcess.shutdown();
     }
 
     private void waitUntilNextTick(long nextTickTimeNanos) {

src/test/java/net/minestom/server/ServerProcessTest.java

@@ -5,8 +5,7 @@ import org.junit.jupiter.api.Test;
 import java.net.InetSocketAddress;
 import java.util.concurrent.atomic.AtomicReference;
 
-import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
-import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.*;
 import static org.junit.jupiter.api.Assumptions.assumeTrue;
 
 public class ServerProcessTest {
@@ -21,6 +20,8 @@ public class ServerProcessTest {
         assertDoesNotThrow(() -> process.get().start(new InetSocketAddress("localhost", 25565)));
         assertThrows(Exception.class, () -> process.get().start(new InetSocketAddress("localhost", 25566)));
         assertDoesNotThrow(() -> process.get().stop());
+        assertFalse(() -> process.get().isAlive(), "Server is still alive");
+        assertDoesNotThrow(() -> process.get().shutdown());
     }
 
     @Test
@@ -33,5 +34,7 @@ public class ServerProcessTest {
         var ticker = process.ticker();
         assertDoesNotThrow(() -> ticker.tick(System.currentTimeMillis()));
         assertDoesNotThrow(process::stop);
+        assertFalse(process::isAlive, "Server is still alive");
+        assertDoesNotThrow(process::shutdown);
     }
 }