[0b990d] | 1 | //
|
---|
| 2 | // exenv.h
|
---|
| 3 | //
|
---|
| 4 | // Copyright (C) 1997 Limit Point Systems, Inc.
|
---|
| 5 | //
|
---|
| 6 | // Author: Curtis Janssen <cljanss@limitpt.com>
|
---|
| 7 | // Maintainer: LPS
|
---|
| 8 | //
|
---|
| 9 | // This file is part of the SC Toolkit.
|
---|
| 10 | //
|
---|
| 11 | // The SC Toolkit is free software; you can redistribute it and/or modify
|
---|
| 12 | // it under the terms of the GNU Library General Public License as published by
|
---|
| 13 | // the Free Software Foundation; either version 2, or (at your option)
|
---|
| 14 | // any later version.
|
---|
| 15 | //
|
---|
| 16 | // The SC Toolkit is distributed in the hope that it will be useful,
|
---|
| 17 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
| 18 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
| 19 | // GNU Library General Public License for more details.
|
---|
| 20 | //
|
---|
| 21 | // You should have received a copy of the GNU Library General Public License
|
---|
| 22 | // along with the SC Toolkit; see the file COPYING.LIB. If not, write to
|
---|
| 23 | // the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
---|
| 24 | //
|
---|
| 25 | // The U.S. Government is granted a limited license as per AL 91-7.
|
---|
| 26 | //
|
---|
| 27 |
|
---|
| 28 | #ifdef __GNUG__
|
---|
| 29 | #pragma interface
|
---|
| 30 | #endif
|
---|
| 31 |
|
---|
| 32 | #ifndef _util_misc_exenv_h
|
---|
| 33 | #define _util_misc_exenv_h
|
---|
| 34 |
|
---|
| 35 | #include <stdlib.h>
|
---|
| 36 |
|
---|
| 37 | #include <scconfig.h>
|
---|
| 38 |
|
---|
| 39 | #include <iostream>
|
---|
| 40 |
|
---|
| 41 | #include <util/misc/formio.h>
|
---|
| 42 |
|
---|
| 43 | namespace sc {
|
---|
| 44 |
|
---|
| 45 | /** The ExEnv class is used to find out about how
|
---|
| 46 | the program is being run. */
|
---|
| 47 | class ExEnv {
|
---|
| 48 | protected:
|
---|
| 49 | static int initialized_;
|
---|
| 50 | static int *argc_;
|
---|
| 51 | static char ***argv_;
|
---|
| 52 | static char hostname_[256];
|
---|
| 53 | static char username_[9];
|
---|
| 54 |
|
---|
| 55 | static size_t mem_;
|
---|
| 56 | static int nproc_;
|
---|
| 57 |
|
---|
| 58 | static std::ostream *out_;
|
---|
| 59 | static std::ostream *nullstream_;
|
---|
| 60 | public:
|
---|
| 61 | /// Set the argument count and vector.
|
---|
| 62 | static void init(int &argcref, char **&argvref);
|
---|
| 63 | /// Return nonzero if ExEnv has been initialized.
|
---|
| 64 | static int initialized() { return argc_ != 0; }
|
---|
| 65 | /// Return an reference to the argument count.
|
---|
| 66 | static int &argc() { return *argc_; }
|
---|
| 67 | /// Return an reference to the argument vector.
|
---|
| 68 | static char **&argv() { return *argv_; }
|
---|
| 69 | /// Return argv[0] with the path removed.
|
---|
| 70 | static const char *program_name();
|
---|
| 71 | /// Return the host name.
|
---|
| 72 | static const char *hostname() { return hostname_; }
|
---|
| 73 | /// Return the user name.
|
---|
| 74 | static const char *username() { return username_; }
|
---|
| 75 |
|
---|
| 76 | static void set_out(std::ostream *o) { SCFormIO::init_ostream(*o);out_=o; }
|
---|
| 77 | /// Return an ostream that writes from all nodes.
|
---|
| 78 | static std::ostream &outn() { if (!out_)set_out(&std::cout);return *out_; }
|
---|
| 79 | /// Return an ostream for error messages that writes from all nodes.
|
---|
| 80 | static std::ostream &errn() { return outn(); }
|
---|
| 81 | /// Return an ostream that writes from node 0.
|
---|
| 82 | static std::ostream &out0();
|
---|
| 83 | /// Return an ostream for error messages that writes from node 0.
|
---|
| 84 | static std::ostream &err0() { return out0(); }
|
---|
| 85 |
|
---|
| 86 | /// The amount of memory on this node.
|
---|
| 87 | static size_t memory() { return mem_; }
|
---|
| 88 | /// The number of processors on this node.
|
---|
| 89 | static int nproc() { return nproc_; }
|
---|
| 90 | };
|
---|
| 91 |
|
---|
| 92 | }
|
---|
| 93 |
|
---|
| 94 | #endif
|
---|
| 95 |
|
---|
| 96 | // Local Variables:
|
---|
| 97 | // mode: c++
|
---|
| 98 | // c-file-style: "CLJ"
|
---|
| 99 | // End:
|
---|