JobCleaner.h

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// $Id: JobCleaner.h,v 1.1 2002/04/02 23:54:56 messier Exp $
//
// This bogus little class is a work around for cint's lazy handling of
// deleting object at scope boundaries. At the end of a job the JobC
// object *must* be deleted or the module EndJob methods will not be
// called leaving files open etc. etc. This cleaner object forces
// deletion of any remaining JobC objects at the end of the job. If
// root ever improves its object management, this class will become
// obsolete.
//
// messier@huhepl.harvard.edu
#ifndef JOBCLEANER_H
#ifndef VECTOR
# include <vector>
# define VECTOR
#endif
class JobC;

class JobCleaner
{
public:
  ~JobCleaner();

  void Add(JobC* j);
  void Remove(JobC* j);
  void Reap();

  static JobCleaner& Instance();
  // Helper class to handle deletion of singleton
  struct Cleaner {
    void ClassIsUsed() { }; // Dummy to quiet compilers...
    ~Cleaner() { 
      if (JobCleaner::fInstance) {
        delete JobCleaner::fInstance;
        JobCleaner::fInstance = 0;
      }
    }
  };
  friend struct Cleaner;

private:
  JobCleaner();

  static JobCleaner* fInstance;
  std::vector<JobC*> fJobCList;
};
#endif // JOBCLEANER_H

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