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MPQC
3.0.0-alpha
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The ExEnv class is used to find out about how the program is being run. More...
#include <util/misc/exenv.h>
Static Public Member Functions | |
| static void | init (int &argcref, char **&argvref) |
| Set the argument count and vector. | |
| static int | initialized () |
| Return nonzero if ExEnv has been initialized. | |
| static int & | argc () |
| Return an reference to the argument count. | |
| static char **& | argv () |
| Return an reference to the argument vector. | |
| static const char * | program_name () |
| Return argv[0] with the path removed. | |
| static const char * | hostname () |
| Return the host name. | |
| static const char * | username () |
| Return the user name. | |
| static std::string | getenv_string (const char *name) |
| Return the value of an environment variable. More... | |
| static void | set_out (std::ostream *o) |
| static std::ostream & | outn () |
| Return an ostream that writes from all nodes. | |
| static std::ostream & | errn () |
| Return an ostream for error messages that writes from all nodes. | |
| static std::ostream & | out0 () |
| Return an ostream that writes from node 0. | |
| static std::ostream & | err0 () |
| Return an ostream for error messages that writes from node 0. | |
| static size_t | memory () |
| The amount of memory on this node. | |
| static int | nproc () |
| The number of processors on this node. | |
The ExEnv class is used to find out about how the program is being run.
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static |
Return the value of an environment variable.
If it does not exist, then an empty string is returned.