Made max mem configurable.

src/main/resources/application.conf

@@ -254,6 +254,14 @@ opencomputers {
       # scaled up to 96KB, `computer.totalMemory` will return 64KB, and if there
       # are really 45KB free, `computer.freeMemory` will return 32KB.
       ramScaleFor64Bit: 1.8
+
+      # The total maximum amount of memory a Lua machine may use for user
+      # programs. The total amount made available by components cannot
+      # exceed this. The default is 64*1024*1024. Keep in mind that this does
+      # not include memory reserved for built-in code such as `machine.lua`.
+      # IMPORTANT: DO NOT MESS WITH THIS UNLESS YOU KNOW WHAT YOU'RE DOING.
+      # IN PARTICULAR, DO NOT REPORT ISSUES AFTER MESSING WITH THIS!
+      maxTotalRam: 67108864
     }
   }
 

src/main/scala/li/cil/oc/Settings.scala

@@ -86,6 +86,7 @@ class Settings(val config: Config) {
       Array(192, 256, 384, 512, 768, 1024)
   }
   val ramScaleFor64Bit = config.getDouble("computer.lua.ramScaleFor64Bit") max 1
+  val maxTotalRam = config.getInt("computer.lua.maxTotalRam") max 0
 
   // ----------------------------------------------------------------------- //
   // robot

src/main/scala/li/cil/oc/server/machine/luac/NativeLuaArchitecture.scala

@@ -160,7 +160,7 @@ abstract class NativeLuaArchitecture(val machine: api.machine.Machine) extends A
   private def memoryInBytes(components: java.lang.Iterable[ItemStack]) = components.foldLeft(0.0)((acc, stack) => acc + (Option(api.Driver.driverFor(stack)) match {
     case Some(driver: Memory) => driver.amount(stack) * 1024
     case _ => 0
-  })).toInt max 0 min 50000000
+  })).toInt max 0 min Settings.get.maxTotalRam
 
   // ----------------------------------------------------------------------- //
 

src/main/scala/li/cil/oc/server/machine/luaj/LuaJLuaArchitecture.scala

@@ -105,7 +105,7 @@ class LuaJLuaArchitecture(val machine: api.machine.Machine) extends Architecture
   private def memoryInBytes(components: java.lang.Iterable[ItemStack]) = components.foldLeft(0.0)((acc, stack) => acc + (Option(api.Driver.driverFor(stack)) match {
     case Some(driver: Memory) => driver.amount(stack) * 1024
     case _ => 0
-  })).toInt max 0 min 50000000
+  })).toInt max 0 min Settings.get.maxTotalRam
 
   // ----------------------------------------------------------------------- //