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java.lang.Object
   |
   +----Refable
           |
           +----utah.npm.core.Space

Summary

public final class  Space
     extends Refable
{
          // Constructors 2
     public Space(Reference, MemPool);
     public Space(Reference, MemPool, int);

          // Methods 5
     public static void currentSpaceKeeperPort(Reference);
     public static void currentSpaceMemPool(Reference);

     public synchronized void destroy();
     public void startMain(String, String, String[]) throws Insanity;
     public String toString();
}

Provide a virtual VM for Java applications to run in. The Space is the hook on which all of the resources for an application hang. Each thread in the system is associated with a Space. Each Space has a MemPool for its memory allocation. Each space has an (implied) namespace with fault handlers. TODO: Move the namespace stuff out of this class into a separate class Rename to Process

Version:

NPMJava 0.5.0 April, 1998

Author:

Patrick Tullmann tullmann@cs.utah.edu

Constructors

· Space

Summary  |  Top

   public Space(Reference keeperPort, 
                MemPool memPool) 

Create a new Space object with the provided KeeperPort reference and the provided MemPool.

Parameter	Description
keeperPort	a reference to a port to send Space-related requests to.
memPool	the MemPool object to link this Space to.

   public Space(Reference keeperPort, 
                MemPool memPool, 
                int hashCode) 

Create a new Space object with the provided KeeperPort reference and the provided MemPool. Give the new space the provided hash code.

Parameter	Description
keeperPort	a reference to a port to send Space-related requests to.
memPool	the MemPool object to link this Space to.
hashCode	the hash code to give this Space.

   public static void currentSpaceKeeperPort(Reference out_ref) 

Return the Keeper Port reference for the current space object. TODO: rename to currentSpaceKeeperPort()

Parameter	Description
out_ref	The reference to fill in with the keeper port info.

   public static void currentSpaceMemPool(Reference out_ref) 

Return the current Space's mem pool.

Parameter	Description
out_ref	The reference to point to the MemPool.

   public void startMain(String threadName, 
                         String initialObj, 
                         String[] initialArgs)  throws Insanity

Fire up the initial thread in this space. The thread is started up executing the Main method of the given initial object with the given vector of arguments (exactly like the object name on the command line of the VM.)

Parameter	Description
threadName	the name of the first thread to start in the space.
initialObj	the name of the initial object to load and invoke the main method on.
initialArgs	the initial arguments to the main method of initialObj.

   public synchronized void destroy() 

   public String toString() 

Return a string representation of this space.

Returns:

the string "NPM Space"

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