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Code Issues Releases Wiki Activity

Add support for running multiple computers at the same time

Browse Source 
- ComputerThread constructs multiple threads instead of just one,
   depending on a config options.
 - The synchronized blocks of PeripheralAPI.PeripheralWrapper have been
   shifted a little to ensure no deadlocks occur.
This commit is contained in:
SquidDev 2017-11-15 13:30:40 +00:00
parent ed8e9d7817
commit dd5698241b
3 changed files with 86 additions and 66 deletions
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10
src/main/java/dan200/computercraft/ComputerCraft.java
View File

@ -127,6 +127,7 @@ public class ComputerCraft
public static boolean disable_lua51_features = false;
public static String default_computer_settings = "";
public static boolean debug_enable = false;
public static int computer_threads = 1;
public static boolean logPeripheralErrors = false;
public static boolean enableCommandBlock = false;
@ -208,6 +209,7 @@ public class ComputerCraft
public static Property disable_lua51_features;
public static Property default_computer_settings;
public static Property debug_enable;
public static Property computer_threads;
public static Property logPeripheralErrors;
public static Property enableCommandBlock;
@ -308,6 +310,13 @@ public class ComputerCraft
Config.debug_enable = Config.config.get( Configuration.CATEGORY_GENERAL, "debug_enable", debug_enable );
Config.debug_enable.setComment( "Enable Lua's debug library. Whilst this should be safe for general use, it may allow players to interact with other computers. Enable at your own risk." );
Config.computer_threads = Config.config.get( Configuration.CATEGORY_GENERAL, "computer_threads", computer_threads );
Config.computer_threads
.setMinValue( 1 )
.setRequiresWorldRestart( true )
.setComment( "Set the number of threads computers can run on. A higher number means more computers can run at once, but may induce lag.\n" +
"Please note that some mods may not work with a thread count higher than 1. Use with caution." );
Config.logPeripheralErrors = Config.config.get( Configuration.CATEGORY_GENERAL, "logPeripheralErrors", logPeripheralErrors );
Config.logPeripheralErrors.setComment( "Log exceptions thrown by peripherals and other Lua objects.\n" +
"This makes it easier for mod authors to debug problems, but may result in log spam should people use buggy methods." );
@ -378,6 +387,7 @@ public class ComputerCraft
disable_lua51_features = Config.disable_lua51_features.getBoolean();
default_computer_settings = Config.default_computer_settings.getString();
debug_enable = Config.debug_enable.getBoolean();
computer_threads = Config.computer_threads.getInt();
logPeripheralErrors = Config.logPeripheralErrors.getBoolean();
enableCommandBlock = Config.enableCommandBlock.getBoolean();

20
src/main/java/dan200/computercraft/core/apis/PeripheralAPI.java
View File

@ -84,12 +84,14 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
m_peripheral.attach( this );
}
public synchronized void detach()
public void detach()
{
// Call detach
m_peripheral.detach( this );
m_attached = false;
synchronized( this )
{
m_attached = false;
// Unmount everything the detach function forgot to do
for( String m_mount : m_mounts )
{
@ -97,6 +99,7 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
}
m_mounts.clear();
}
}
public Object[] call( ILuaContext context, String methodName, Object[] arguments ) throws LuaException, InterruptedException
{
@ -209,7 +212,7 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
}
@Override
public synchronized int getID()
public int getID()
{
if( !m_attached ) {
throw new RuntimeException( "You are not attached to this Computer" );
@ -218,7 +221,7 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
}
@Override
public synchronized void queueEvent( @Nonnull final String event, final Object[] arguments )
public void queueEvent( @Nonnull final String event, final Object[] arguments )
{
if( !m_attached ) {
throw new RuntimeException( "You are not attached to this Computer" );
@ -228,7 +231,7 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
@Nonnull
@Override
public synchronized String getAttachmentName()
public String getAttachmentName()
{
if( !m_attached ) {
throw new RuntimeException( "You are not attached to this Computer" );
@ -464,7 +467,7 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
// call
int side = parseSide( args );
String methodName = getString( args, 1 );
Object[] methodArgs = trimArray( args, 2 );
Object[] methodArgs = Arrays.copyOfRange( args, 2, args.length );
if( side >= 0 )
{
@ -489,11 +492,6 @@ public class PeripheralAPI implements ILuaAPI, IAPIEnvironment.IPeripheralChange
// Privates
private Object[] trimArray( Object[] array, int skip )
{
return Arrays.copyOfRange( array, skip, array.length );
}
private int parseSide( Object[] args ) throws LuaException
{
String side = getString( args, 0 );

30
src/main/java/dan200/computercraft/core/computer/ComputerThread.java
View File

@ -53,9 +53,10 @@ public class ComputerThread
/**
* The thread tasks execute on
*/
private static Thread s_thread = null;
private static Thread[] s_threads = null;
private static final AtomicInteger s_counter = new AtomicInteger( 1 );
private static final AtomicInteger s_ManagerCounter = new AtomicInteger( 1 );
private static final AtomicInteger s_DelegateCounter = new AtomicInteger( 1 );
/**
* Start the computer thread
@ -65,17 +66,25 @@ public class ComputerThread
synchronized( s_stateLock )
{
s_stopped = false;
if( s_thread == null || !s_thread.isAlive() )
if( s_threads == null || s_threads.length != ComputerCraft.computer_threads )
{
s_threads = new Thread[ ComputerCraft.computer_threads ];
}
SecurityManager manager = System.getSecurityManager();
final ThreadGroup group = manager == null ? Thread.currentThread().getThreadGroup() : manager.getThreadGroup();
Thread thread = s_thread = new Thread( group, new TaskExecutor(), "ComputerCraft-Computer-Manager" );
for( int i = 0; i < s_threads.length; i++ )
{
Thread thread = s_threads[ i ];
if( thread == null || !thread.isAlive() )
{
thread = s_threads[ i ] = new Thread( group, new TaskExecutor(), "ComputerCraft-Computer-Manager-" + s_ManagerCounter.getAndIncrement() );
thread.setDaemon( true );
thread.start();
}
}
}
}
/**
* Attempt to stop the computer thread
@ -84,12 +93,15 @@ public class ComputerThread
{
synchronized( s_stateLock )
{
if( s_thread != null )
if( s_threads != null )
{
s_stopped = true;
if( s_thread.isAlive() )
for( Thread thread : s_threads )
{
s_thread.interrupt();
if( thread != null && thread.isAlive() )
{
thread.interrupt();
}
}
}
}
@ -178,7 +190,7 @@ public class ComputerThread
SecurityManager manager = System.getSecurityManager();
final ThreadGroup group = manager == null ? Thread.currentThread().getThreadGroup() : manager.getThreadGroup();
Thread thread = this.thread = new Thread( group, runner, "ComputerCraft-Computer-Runner" + s_counter.getAndIncrement() );
Thread thread = this.thread = new Thread( group, runner, "ComputerCraft-Computer-Runner" + s_DelegateCounter.getAndIncrement() );
thread.setDaemon( true );
thread.start();
}