MPQC
2.3.1
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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 <stdlib.h> 00036 00037 #include <scconfig.h> 00038 00039 #include <iostream> 00040 00041 #include <util/misc/formio.h> 00042 00043 namespace sc { 00044 00047 class ExEnv { 00048 protected: 00049 static int initialized_; 00050 static int *argc_; 00051 static char ***argv_; 00052 static char hostname_[256]; 00053 static char username_[9]; 00054 00055 static size_t mem_; 00056 static int nproc_; 00057 00058 static std::ostream *out_; 00059 static std::ostream *nullstream_; 00060 public: 00062 static void init(int &argcref, char **&argvref); 00064 static int initialized() { return argc_ != 0; } 00066 static int &argc() { return *argc_; } 00068 static char **&argv() { return *argv_; } 00070 static const char *program_name(); 00072 static const char *hostname() { return hostname_; } 00074 static const char *username() { return username_; } 00075 00076 static void set_out(std::ostream *o) { SCFormIO::init_ostream(*o);out_=o; } 00078 static std::ostream &outn() { if (!out_)set_out(&std::cout);return *out_; } 00080 static std::ostream &errn() { return outn(); } 00082 static std::ostream &out0(); 00084 static std::ostream &err0() { return out0(); } 00085 00087 static size_t memory() { return mem_; } 00089 static int nproc() { return nproc_; } 00090 }; 00091 00092 } 00093 00094 #endif 00095 00096 // Local Variables: 00097 // mode: c++ 00098 // c-file-style: "CLJ" 00099 // End: