Debugger.java

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package edu.rice.cs.hpc.traceviewer.data.util;

public class Debugger {
    
    final static int MAX_TRACES = 8;
    final static int MIN_TRACES = 2;
    
    final static private String MSG_HEADER = "[hpctr] ";
    static private int debugLevel = 0;
    
    //Set to negative of what client says
    static private int timeCorrection = 976023; //in microseconds
    private static final boolean printTimeDebugMessages = false;
    /***
     * print the call stack debugging info
     * 
     * @param str
     */
    static public void printTrace(String str) {
        if (debugLevel > 0)
        {
            System.out.print(str + ":\t");
            Throwable t = new Throwable();
            StackTraceElement traces[] = t.getStackTrace();
            for (int i=MIN_TRACES; i<MAX_TRACES; i++) {
                System.out.println("\t" + traces[i]);
            }
        }
    }
    
    /***
     * set a new debug level
     * 
     * @param level
     */
    static public void setDebugLevel(int level) {
        debugLevel = level;
        System.out.println(MSG_HEADER +"Set debug level: " + level);
    }
    
    /***
     * return the current debug level (set by user)
     * @return
     */
    static public int getDebugLevel() {
        return debugLevel;
    }
    
    static public void checkArgDebug(String args[]) {
        boolean debugFlag = false;
        
        for (String arg: args) {
            if (!debugFlag && arg.compareTo("-g")==0) {
                debugFlag = true;
            } else if (debugFlag) {
                int level = Integer.valueOf(arg);
                setDebugLevel( level );
            }
        }
    }
    
    /***
     * synchronously output the debugging message if it exceeds certain level
     * 
     * @param level: minimum debug level 
     * @param msg
     */
    static public void printDebug( int level, String msg ) {
        if (debugLevel > level)
            System.out.println( MSG_HEADER + msg);
    }

    public static void printTimestampDebug(String msg) {
        long t = System.nanoTime();
        if(printTimeDebugMessages) {
            System.out.println((t/1000 + timeCorrection) + "\t" + msg);
        }
        
    }
}