Process.hpp

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* Copyright (C) 2005, Quest Software, Inc. All rights reserved.
* Copyright (C) 2006, Novell, Inc. All rights reserved.
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*       nor Novell, Inc., 
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#ifndef BLOCXX_PROCESS_HPP_INCLUDE_GUARD_
#define BLOCXX_PROCESS_HPP_INCLUDE_GUARD_
 
#include "blocxx/BLOCXX_config.h"
#include "blocxx/Exception.hpp"
#include "blocxx/Types.hpp"
#include "blocxx/IntrusiveCountableBase.hpp"
#include "blocxx/CommonFwd.hpp"
#include "blocxx/Cstr.hpp"
#include "blocxx/Timeout.hpp"
  // For Exec::spawn
#include <vector>
 
namespace BLOCXX_NAMESPACE
{
 
BLOCXX_DECLARE_EXCEPTION(ProcessError);
 
class ProcessImpl;
typedef IntrusiveReference<ProcessImpl> ProcessImplRef;
 
//
class BLOCXX_COMMON_API Process : public IntrusiveCountableBase
{
public:
   //
   Process(
      UnnamedPipeRef const & in, UnnamedPipeRef const & out,
      UnnamedPipeRef const & err, ProcId pid
   );
 
protected:
   //
   Process(
      const ProcessImplRef& impl, UnnamedPipeRef const & in, UnnamedPipeRef const & out,
      UnnamedPipeRef const & err, ProcId pid
   );
 
public:
   Process(ProcId pid);
 
   void release();
 
   virtual ~Process();
 
   UnnamedPipeRef in() const;
 
   UnnamedPipeRef out() const;
 
   UnnamedPipeRef err() const;
 
   ProcId pid() const;
 
   //
   class BLOCXX_COMMON_API Status
   {
   public:
      struct Repr { };
 
 
      //
      Status(ProcId wpid, int status);
 
      //
      Status(int rep1, int rep2, Repr);
 
      //
      Status();
 
      //
      bool running() const;
 
      //
      bool exitTerminated() const;
 
      int exitStatus() const;
 
      //
      bool terminatedSuccessfully() const;
 
      //
      bool signalTerminated() const;
 
      //
      bool terminated() const;
      
      //
      int termSignal() const;
 
      //
      bool stopped() const;
 
      //
      int stopSignal() const;
 
      String toString() const;
 
      int getPOSIXwaitpidStatus() const; 
   
      void repr(int & rep1, int & rep2) const;
      
   private:
      bool m_status_available;
      int m_status;
   };
 
   Status processStatus();
 
   enum ETerminationSelectionFlag
   {
      E_TERMINATE_PROCESS_GROUP,
      E_TERMINATE_PROCESS_ONLY
   };
   void waitCloseTerm(
      const Timeout& wait_initial = Timeout::relative(5.0), 
      const Timeout& wait_close =   Timeout::relative(10.0), 
      const Timeout& wait_term =    Timeout::relative(15.0),
      ETerminationSelectionFlag terminationSelectionFlag = E_TERMINATE_PROCESS_GROUP);
 
   void waitCloseTerm(float wait_initial, float wait_close, float wait_term);
 
private:
   bool terminatesWithin(const Timeout& wait_time);
   ProcId getCurProcessId();
   
#ifdef BLOCXX_WIN32
   bool terminateByMessage(const Timeout& waitTime);
   bool killProcess(const Timeout& waitTime, ETerminationSelectionFlag terminationSelectionFlag);
#else
   bool killWait(const Timeout& wait_time, int sig, char const * signame, ETerminationSelectionFlag terminationSelectionFlag);
#endif
 
   Process(Process const &);
 
   void operator=(Process const &);
 
   ProcessImplRef m_impl;
   UnnamedPipeRef m_in;
   UnnamedPipeRef m_out;
   UnnamedPipeRef m_err;
   ProcId m_pid;
   Status m_status;
};
 
class BLOCXX_COMMON_API ProcessImpl : public IntrusiveCountableBase
{
public:
   virtual ~ProcessImpl();
 
   virtual int kill(ProcId pid, int sig) = 0;
 
   virtual Process::Status pollStatus(ProcId pid) = 0;
};
 
 
 
} // namespace BLOCXX_NAMESPACE
 
#endif