trace.h

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/*  Copyright (C) 2013  Eric Larson and Rochelle Palting
    elarson@seattleu.edu

    This file is part of the MDAT infrastructure.

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef TRACE_H
#define TRACE_H

#include <string>
#include <fstream>
#include <deque>
using namespace std;

class TraceManager
{

  public:

    void init(char *fileName, bool _useConsole);

    void finish();

    void printHeader(string header);

    void printThreadId(int id);
    
    void printSection(string section);
    
    void printMessage(string message);
    
    void printTables();

    void internalError(string errorMsg);

    void externalError(string errorMsg);

  private:

    /* Trace state */
    enum {
      HEADER,           /* header line is next required thing to print */
      THREAD,           /* thread line is next required thing to print */
      MESSAGE,          /* message line is next required thing to print */
      TABLE             /* tables are next required thing to print */
    } traceState;

    ofstream traceFile;         /* output trace file stream */
    bool useFile;               /* print trace to file if set */
    bool useConsole;            /* print trace to screen if set */

    /* Prints the string to the trace file. */
    void printString(string traceStr);
    
};

/*
 * Global trace manager.
 */
extern TraceManager tracer;

#endif