Pipe.cpp

Go to the documentation of this file.

// -*- c++ -*-
//------------------------------------------------------------------------------
// $Id: Pipe.cpp,v 1.5 2006/07/20 02:30:54 vlg Exp $
//------------------------------------------------------------------------------
//                            Pipe.cpp
//------------------------------------------------------------------------------
//  Copyright (c) 1997-2002,2005 by Vladislav Grinchenko
//
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Library General Public
//  License as published by the Free Software Foundation; either
//  version 2 of the License, or (at your option) any later version.
//------------------------------------------------------------------------------
//
// Pipe class is based on ./unixsysdevel-734/homework3/src/bin/pipe/pipe.c
// code I wrote for UNIX system development class of JohnsHopking 
// part time engineering school in November 1997. 
// The class implementation is a rip off of Stevens' popen ()/ pclose()
// function, p. 438.
//
//------------------------------------------------------------------------------
 
#include <errno.h>
#include <sys/types.h>          // kill (2)
#include <signal.h>             // kill (2)
#include <unistd.h>             // pipe (2)
 
#include "assa/Pipe.h"
#include "assa/Fork.h"
 
using namespace ASSA;
 
Pipe::
Pipe ()
    : m_fp (NULL), 
      m_child_pid (0)
 {
    trace_with_mask("Pipe::Pipe", PIPE);
    /* no-op */
}
 
Pipe::
~Pipe ()
{
    trace_with_mask("Pipe::~Pipe", PIPE);
    close ();
}
 
FILE*
Pipe::
open (const string& cmd_, const string& type_)
{