Create TCB.java

TCB.java

@@ -0,0 +1,79 @@
+/* Joseph Schooley & Nguyen Tong, CSS 430, Professor Sung
+   CSS430 Final Project - File System
+   TCB Class
+*/
+public class TCB {
+    private Thread thread = null;
+    private int tid = 0;
+    private int pid = 0;
+    private boolean terminated = false;
+    private int sleepTime = 0;
+    public FileTableEntry[] ftEnt = null; // added for the file system
+
+    public TCB( Thread newThread, int myTid, int parentTid ) {
+	    thread = newThread;
+	    tid = myTid;
+	    pid = parentTid;
+	    terminated = false;
+
+	    ftEnt = new FileTableEntry[32];    // added for the file system
+
+	    System.err.println( "threadOS: a new thread (thread=" + thread + 
+			    " tid=" + tid + 
+			    " pid=" + pid + ")");
+    }
+
+    public synchronized Thread getThread( ) {
+	    return thread;
+    }
+
+    public synchronized int getTid( ) {
+	    return tid;
+    }
+
+    public synchronized int getPid( ) {
+	    return pid;
+    }
+
+    public synchronized boolean setTerminated( ) {
+	    terminated = true;
+	    return terminated;
+    }
+
+    public synchronized boolean getTerminated( ) {
+	    return terminated;
+    }
+
+    // added for the file system
+    public synchronized int getFd( FileTableEntry entry ) {
+	    if ( entry == null )
+	        return -1;
+	    for ( int i = 3; i < 32; i++ ) {
+	        if ( ftEnt[i] == null ) {
+		          ftEnt[i] = entry;
+		          return i;
+	        }
+	    }
+	    return -1;
+    }
+
+    // added for the file system
+    public synchronized FileTableEntry returnFd( int fd ) {
+	    if ( fd >= 3 && fd < 32 ) {
+	      FileTableEntry oldEnt = ftEnt[fd];
+	      ftEnt[fd] = null;
+	      return oldEnt;
+	    }
+	    else
+	      return null;
+    }
+
+    // added for the file systme
+    public synchronized FileTableEntry getFtEnt( int fd ) {
+	    if ( fd >= 3 && fd < 32 )
+	      return ftEnt[fd];
+	    else
+	      return null;
+    }
+}
+