Signal.h

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#ifndef SIGNAL_H
#define SIGNAL_H

#include <signal.h>     // Needed for SIGPIPE, etc.
#include <setjmp.h>     // Needed for jmp_buf, etc.

#define SIG_HANDLER(fn)  void  (fn)(int sigNo)
#define SIG_ACTION(fn)   void  (fn)(int sigNo, siginfo_t* sigInfo, void* arg)

#if !HAVE_RT
#define SIGRTMAX 31
#endif

namespace gcp {
  namespace util {
    
    class Signal {
    public:
      
      Signal(int sigNo);
      
      Signal(int sigNo, SIG_HANDLER(*handler));
      
      Signal(int sigNo, SIG_HANDLER(*handler), sigset_t* sigSet);
      
      Signal(int sigNo, SIG_ACTION(*action));
      
      Signal(int sigNo, SIG_ACTION(*action), sigset_t* sigSet);
      
      void installHandler(SIG_HANDLER(*handler));
      
      void installHandler(SIG_ACTION(*action));
      
      ~Signal();
      
    private:
      
      static Signal* signal_;
      
      int sigNo_;
      
      sigset_t sigSet_;
      
      bool sigSetIsEmpty;
      
      static SIG_ACTION(action_);
      
      SIG_HANDLER(*userhandler_);
      
      SIG_ACTION(*useraction_);
      
      void privateConstructor(int sigNo, SIG_HANDLER(*handler), 
                  SIG_ACTION(*action), sigset_t* sigSet);
      void setUpSigAction();
      
    }; // End class Signal
    
  } // End namespace util
} // End namespace gcp


#endif // End #ifndef