/usr/include/sc/util/misc/exenv.h is in libsc-dev 2.3.1-18build1.
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// exenv.h
//
// Copyright (C) 1997 Limit Point Systems, Inc.
//
// Author: Curtis Janssen <cljanss@limitpt.com>
// Maintainer: LPS
//
// This file is part of the SC Toolkit.
//
// The SC Toolkit 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, or (at your option)
// any later version.
//
// The SC Toolkit 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 Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public License
// along with the SC Toolkit; see the file COPYING.LIB. If not, write to
// the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
//
// The U.S. Government is granted a limited license as per AL 91-7.
//
#ifdef __GNUG__
#pragma interface
#endif
#ifndef _util_misc_exenv_h
#define _util_misc_exenv_h
#include <stdlib.h>
#include <scconfig.h>
#include <iostream>
#include <util/misc/formio.h>
namespace sc {
/** The ExEnv class is used to find out about how
the program is being run. */
class ExEnv {
protected:
static int initialized_;
static int *argc_;
static char ***argv_;
static char hostname_[256];
static char username_[9];
static size_t mem_;
static int nproc_;
static std::ostream *out_;
static std::ostream *nullstream_;
public:
/// Set the argument count and vector.
static void init(int &argcref, char **&argvref);
/// Return nonzero if ExEnv has been initialized.
static int initialized() { return argc_ != 0; }
/// Return an reference to the argument count.
static int &argc() { return *argc_; }
/// Return an reference to the argument vector.
static char **&argv() { return *argv_; }
/// Return argv[0] with the path removed.
static const char *program_name();
/// Return the host name.
static const char *hostname() { return hostname_; }
/// Return the user name.
static const char *username() { return username_; }
static void set_out(std::ostream *o) { SCFormIO::init_ostream(*o);out_=o; }
/// Return an ostream that writes from all nodes.
static std::ostream &outn() { if (!out_)set_out(&std::cout);return *out_; }
/// Return an ostream for error messages that writes from all nodes.
static std::ostream &errn() { return outn(); }
/// Return an ostream that writes from node 0.
static std::ostream &out0();
/// Return an ostream for error messages that writes from node 0.
static std::ostream &err0() { return out0(); }
/// The amount of memory on this node.
static size_t memory() { return mem_; }
/// The number of processors on this node.
static int nproc() { return nproc_; }
};
}
#endif
// Local Variables:
// mode: c++
// c-file-style: "CLJ"
// End:
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