exenv.h Source File

00001 //
00002 // exenv.h
00003 //
00004 // Copyright (C) 1997 Limit Point Systems, Inc.
00005 //
00006 // Author: Curtis Janssen <cljanss@limitpt.com>
00007 // Maintainer: LPS
00008 //
00009 // This file is part of the SC Toolkit.
00010 //
00011 // The SC Toolkit is free software; you can redistribute it and/or modify
00012 // it under the terms of the GNU Library General Public License as published by
00013 // the Free Software Foundation; either version 2, or (at your option)
00014 // any later version.
00015 //
00016 // The SC Toolkit is distributed in the hope that it will be useful,
00017 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00018 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019 // GNU Library General Public License for more details.
00020 //
00021 // You should have received a copy of the GNU Library General Public License
00022 // along with the SC Toolkit; see the file COPYING.LIB.  If not, write to
00023 // the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
00024 //
00025 // The U.S. Government is granted a limited license as per AL 91-7.
00026 //
00027 
00028 #ifdef __GNUG__
00029 #pragma interface
00030 #endif
00031 
00032 #ifndef _util_misc_exenv_h
00033 #define _util_misc_exenv_h
00034 
00035 #include <scconfig.h>
00036 
00037 #include <iostream>
00038 
00039 #include <util/misc/formio.h>
00040 
00041 namespace sc {
00042 
00045 class ExEnv {
00046   protected:
00047     static int initialized_;
00048     static int *argc_;
00049     static char ***argv_;
00050     static char hostname_[256];
00051     static char username_[9];
00052 
00053     static size_t mem_;
00054     static int nproc_;
00055 
00056     static std::ostream *out_;
00057     static std::ostream *nullstream_;
00058   public:
00060     static void init(int &argcref, char **&argvref);
00062     static int initialized() { return argc_ != 0; }
00064     static int &argc() { return *argc_; }
00066     static char **&argv() { return *argv_; }
00068     static const char *program_name();
00070     static const char *hostname() { return hostname_; }
00072     static const char *username() { return username_; }
00073 
00074     static void set_out(std::ostream *o) { SCFormIO::init_ostream(*o);out_=o; }
00076     static std::ostream &outn() { if (!out_)set_out(&std::cout);return *out_; }
00078     static std::ostream &errn() { return outn(); }
00080     static std::ostream &out0();
00082     static std::ostream &err0() { return out0(); }
00083 
00085     static size_t memory() { return mem_; }
00087     static int nproc() { return nproc_; }
00088 };
00089 
00090 }
00091 
00092 #endif
00093 
00094 // Local Variables:
00095 // mode: c++
00096 // c-file-style: "CLJ"
00097 // End: