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package gregtech.api.threads;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;
import net.minecraft.tileentity.TileEntity;
import net.minecraft.world.World;
import net.minecraftforge.common.util.ForgeDirection;
import com.gtnewhorizon.gtnhlib.util.CoordinatePacker;
import gregtech.GTMod;
import gregtech.api.GregTechAPI;
import gregtech.api.interfaces.tileentity.IMachineBlockUpdateable;
import gregtech.common.GTProxy;
import it.unimi.dsi.fastutil.longs.LongArrayFIFOQueue;
import it.unimi.dsi.fastutil.longs.LongOpenHashSet;
import it.unimi.dsi.fastutil.longs.LongSet;
public class RunnableMachineUpdate implements Runnable {
// used by runner thread
protected final int initialX, initialY, initialZ;
protected final World world;
protected final LongSet visited = new LongOpenHashSet();
protected final LongArrayFIFOQueue tQueue = new LongArrayFIFOQueue();
// Threading
private static final ThreadFactory THREAD_FACTORY = r -> {
Thread thread = new Thread(r);
thread.setName("GT_MachineBlockUpdate");
return thread;
};
protected static ExecutorService EXECUTOR_SERVICE;
// This class should never be initiated outside of this class!
protected RunnableMachineUpdate(World aWorld, int posX, int posY, int posZ) {
this.world = aWorld;
this.initialX = posX;
this.initialY = posY;
this.initialZ = posZ;
final long coords = CoordinatePacker.pack(posX, posY, posZ);
visited.add(coords);
tQueue.enqueue(coords);
}
public static boolean isEnabled() {
return isEnabled;
}
public static void setEnabled() {
RunnableMachineUpdate.isEnabled = true;
}
public static void setDisabled() {
RunnableMachineUpdate.isEnabled = false;
}
public static void setEnabled(boolean isEnabled) {
RunnableMachineUpdate.isEnabled = isEnabled;
}
public static boolean isCurrentThreadEnabled() {
return perThreadEnable.get();
}
public static void setCurrentThreadEnabled(boolean perThreadEnable) {
RunnableMachineUpdate.perThreadEnable.set(perThreadEnable);
}
protected static boolean isEnabled = true;
protected static final ThreadLocal<Boolean> perThreadEnable = ThreadLocal.withInitial(() -> true);
public static void setMachineUpdateValues(World aWorld, int posX, int posY, int posZ) {
if (isEnabled() && isCurrentThreadEnabled()) {
EXECUTOR_SERVICE.submit(new RunnableMachineUpdate(aWorld, posX, posY, posZ));
}
}
public static void initExecutorService() {
EXECUTOR_SERVICE = Executors.newFixedThreadPool(
Math.max(
1,
(Runtime.getRuntime()
.availableProcessors() * 2
/ 3)),
THREAD_FACTORY);
}
public static void shutdownExecutorService() {
try {
GTMod.GT_FML_LOGGER.info("Shutting down Machine block update executor service");
EXECUTOR_SERVICE.shutdown(); // Disable new tasks from being submitted
// Wait a while for existing tasks to terminate
if (!EXECUTOR_SERVICE.awaitTermination(60, TimeUnit.SECONDS)) {
EXECUTOR_SERVICE.shutdownNow(); // Cancel currently executing tasks
// Wait a while for tasks to respond to being cancelled
if (!EXECUTOR_SERVICE.awaitTermination(60, TimeUnit.SECONDS)) {
GTMod.GT_FML_LOGGER
.error("Well this didn't terminated well... RunnableMachineUpdate.shutdownExecutorService");
}
}
} catch (InterruptedException ie) {
GTMod.GT_FML_LOGGER.error("Well this interruption got interrupted...", ie);
// (Re-)Cancel if current thread also interrupted
EXECUTOR_SERVICE.shutdownNow();
// Preserve interrupt status
Thread.currentThread()
.interrupt();
} catch (Exception e) {
GTMod.GT_FML_LOGGER.error("Well this didn't terminated well...", e);
// (Re-)Cancel in case
EXECUTOR_SERVICE.shutdownNow();
} finally {
GTMod.GT_FML_LOGGER.info("Leaving... RunnableMachineUpdate.shutdownExecutorService");
}
}
@Override
public void run() {
int posX, posY, posZ;
try {
while (!tQueue.isEmpty()) {
final long packedCoords = tQueue.dequeueLong();
posX = CoordinatePacker.unpackX(packedCoords);
posY = CoordinatePacker.unpackY(packedCoords);
posZ = CoordinatePacker.unpackZ(packedCoords);
final TileEntity tTileEntity;
final boolean isMachineBlock;
// This might load a chunk... which might load a TileEntity... which might get added to
// `loadedTileEntityList`... which might be in the process
// of being iterated over during `UpdateEntities()`... which might cause a
// ConcurrentModificationException. So, lock that shit.
GTProxy.TICK_LOCK.lock();
try {
tTileEntity = world.getTileEntity(posX, posY, posZ);
isMachineBlock = GregTechAPI
.isMachineBlock(world.getBlock(posX, posY, posZ), world.getBlockMetadata(posX, posY, posZ));
} finally {
GTProxy.TICK_LOCK.unlock();
}
// See if the block itself needs an update
if (tTileEntity instanceof IMachineBlockUpdateable)
((IMachineBlockUpdateable) tTileEntity).onMachineBlockUpdate();
// Now see if we should add the nearby blocks to the queue:
// 1) If we've visited less than 5 blocks, then yes
// 2) If the tile says we should recursively updated (pipes don't, machine blocks do)
// 3) If the block at the coordinates is marked as a machine block
if (visited.size() < 5
|| (tTileEntity instanceof IMachineBlockUpdateable
&& ((IMachineBlockUpdateable) tTileEntity).isMachineBlockUpdateRecursive())
|| isMachineBlock) {
for (int i = 0; i < ForgeDirection.VALID_DIRECTIONS.length; i++) {
final ForgeDirection side = ForgeDirection.VALID_DIRECTIONS[i];
final long tCoords = CoordinatePacker
.pack(posX + side.offsetX, posY + side.offsetY, posZ + side.offsetZ);
if (visited.add(tCoords)) {
tQueue.enqueue(tCoords);
}
}
}
}
} catch (Exception e) {
GTMod.GT_FML_LOGGER.error(
"Well this update was broken... " + initialX
+ ", "
+ initialY
+ ", "
+ initialZ
+ ", mWorld={"
+ world.getProviderName()
+ " @dimId "
+ world.provider.dimensionId
+ "}",
e);
}
}
}
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