src/edu/berkeley/fleet/interpreter/Interpreter.java

   1 package edu.berkeley.fleet.interpreter;
   2 import java.io.*;
   3 import java.util.*;
   4 import java.util.concurrent.*;
   5 import java.lang.reflect.*;
   6 import edu.berkeley.sbp.util.ANSI;
   7 import edu.berkeley.fleet.api.*;
   8 import edu.berkeley.fleet.two.*;
   9 import edu.berkeley.fleet.assembler.*;
  10 import edu.berkeley.fleet.util.*;
  11
  12 public class Interpreter extends FleetTwoFleet implements Parser.FleetWithDynamicShips {
  13
  14     private InterpreterShip debugShip = null;
  15     private BlockingQueue<BitVector> debugStream = new LinkedBlockingQueue<BitVector>();
  16     private HashMap<String,InterpreterShip> ships = new HashMap<String,InterpreterShip>();
  17     public Iterator<Ship> iterator() { return (Iterator<Ship>)(Object)ships.values().iterator(); }
  18     public Ship getShip(String type, int ordinal) {
  19         for(Ship s : this)
  20             if (s.getType().equals(type))
  21                 if (ordinal-- < 0)
  22                     return s;
  23         return null;
  24     }
  25
  26     void dispatch(Instruction i) {
  27         Log.dispatch(i);
  28         long il = writeInstruction(i, debugShip.getDock("in"));
  29         Path path = debugShip.getDock("in").getPath(i.dock.getInstructionDestination(), null);
  30         new Packet((InterpreterPath)path, new BitVector(getWordWidth()).set(il), false).send();
  31     }
  32
  33     public Ship createShip(String shipType, String shipname) {
  34         try {
  35             Class c = Class.forName("edu.berkeley.fleet.interpreter."+shipType);
  36             Constructor con = c.getConstructor(new Class[] { Interpreter.class, String.class, ShipDescription.class });
  37             BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream("ships/"+shipType+".ship")));
  38             ShipDescription sd = new ShipDescription(shipType, br);
  39             InterpreterShip ret = (InterpreterShip)con.newInstance(new Object[] { this, shipname, sd });
  40             ships.put(shipname, ret);
  41             if (shipType.equals("Debug") && debugShip == null)
  42                 debugShip = ret;
  43             return ret;
  44         } catch (Exception e) {
  45             e.printStackTrace();
  46             return null;
  47         }
  48     }
  49
  50     void debug(long d) { debug(new BitVector(getWordWidth()).set(d)); }
  51     void debug(BitVector data) {
  52         try {
  53             if (debugStream != null) debugStream.put(data);
  54             else Log.println(ANSI.invert("   DEBUG: got a datum: " +  data+ANSI.clreol()));
  55         } catch (Exception e) {
  56             throw new RuntimeException(e);
  57         }
  58     }
  59
  60     // Instruction Encoding /////////////////////////////////////////////////////////////////////////
  61
  62     public long getDestAddr(Path path) {
  63         long ret = ((InterpreterDestination)path.getDestination()).addr;
  64         BitVector bv = path.getSignal();
  65         if (bv != null) {
  66             if (bv.length() > 1) throw new RuntimeException("signal was " + bv.length() + " bits long!");
  67             if (bv.length() > 0 && bv.get(0)) ret |= 1;
  68         }
  69         return ret;
  70     }
  71
  72
  73     // ShipDescription //////////////////////////////////////////////////////////////////////////////
  74
  75     public void expand(ShipDescription sd) {
  76         try {
  77             String filename = sd.getName();
  78             //String filename = (sd.getName().charAt(0)+"").toUpperCase() + sd.getName().substring(1).toLowerCase();
  79             File outf = new File("build/java/edu/berkeley/fleet/interpreter/"+filename+".java");
  80             new File(outf.getParent()).mkdirs();
  81             System.err.println("writing to " + outf);
  82             FileOutputStream out = new FileOutputStream(outf);
  83             PrintWriter pw = new PrintWriter(out);
  84
  85             pw.println("package edu.berkeley.fleet.interpreter;");
  86             pw.println("import edu.berkeley.sbp.util.ANSI;");
  87             pw.println("import edu.berkeley.fleet.api.*;");
  88             pw.println("import edu.berkeley.fleet.two.*;");
  89             pw.println("import edu.berkeley.fleet.*;");
  90             pw.println("import java.util.*;");
  91             pw.println("import java.io.*;");
  92             pw.println("");
  93             pw.println("public class "+filename+" extends InterpreterShip {");
  94             pw.println("");
  95             for(DockDescription b : sd) {
  96                 String name = b.getName();
  97                 pw.print("    InterpreterDock box_");
  98                 pw.print(name);
  99                 pw.print(" = new InterpreterDock(this, shipDescription.getDockDescription(\""+name+"\"));");
 100             }
 101             pw.println("");
 102             pw.println("    public "+filename+"(Interpreter fleet, String name, ShipDescription sd) {");
 103             pw.println("       super(fleet, sd);");
 104             for(DockDescription b : sd)
 105                 pw.println("       addDock(\""+b.getName()+"\", box_"+b.getName()+");");
 106             pw.println("    }");
 107             pw.println("");
 108             pw.println(sd.getSection("fleeterpreter"));
 109             pw.println("}");
 110             pw.flush();
 111             pw.close();
 112         } catch (Exception e) { throw new RuntimeException(e); }
 113     }
 114
 115     // Run //////////////////////////////////////////////////////////////////////////////
 116
 117     public FleetProcess run(final Instruction[] instructions) {
 118         InterpreterProcess ip = new InterpreterProcess(instructions);
 119         new Thread(ip).start();
 120         return ip;
 121     }
 122
 123     private class InterpreterProcess extends FleetProcess implements Runnable {
 124         private Instruction[] instructions;
 125         public InterpreterProcess(Instruction[] instructions) {
 126             this.instructions = instructions;
 127             for(Instruction i : instructions)
 128                 dispatchInstruction(i);
 129         }
 130         public void dispatchInstruction(Instruction i) { dispatch(i); }
 131         public Dock getDebugInputDock() { return debugShip.getDock("in"); }
 132         public BitVector readWord() {
 133             try {
 134                 return debugStream.take();
 135             } catch (Exception e) { throw new RuntimeException(e); }
 136         }
 137         protected void _terminate() { }
 138         public void run() {
 139             try {
 140                 while(!isTerminated())
 141                     for(InterpreterShip ship : ships.values())
 142                         for(int j=0; j<10; j++)
 143                             ship._service();
 144                 for(InterpreterShip ship : ships.values())
 145                     ship.reset();
 146                 debugStream.clear();
 147             } catch (Exception e) {
 148                 if (isTerminated()) return;
 149                 throw new RuntimeException(e);
 150             }
 151         }
 152     }
 153 }