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Describes the execution environment of the program.
This is an old way of writing singleton.
Static Public Member Functions | |
| static void init (int &argcref, char **&argvref) | |
| Set the argument count and vector. More... | |
| static void set_out (std::ostream *o=nullptr) | |
| static void push_out (std::ostream *o=nullptr) | |
| static void pop_out () | |
| static void set_err (std::ostream *o=nullptr) | |
| static void push_err (std::ostream *o=nullptr) | |
| static void pop_err () | |
| static bool initialized () | |
| static int & argc () | |
| Return an reference to the argument count. More... | |
| static char **& argv () | |
| Return an reference to the argument vector. More... | |
| static const char * program_name () | |
| Return argv[0] with the path removed. More... | |
| static const char * hostname () | |
| Return the host name. More... | |
| static const char * username () | |
| Return the user name. More... | |
| static std::string getenv (const std::string &name) | |
| static std::ostream & outn () | |
| Return an ostream that writes from all processes. More... | |
| static std::ostream & errn () | |
| Return an ostream for error messages that writes from all processes. More... | |
| static std::ostream & out0 () | |
| static std::ostream & err0 () | |
| static std::ostream & out0 (TA::World &world) | |
| Return an ostream that writes from process 0 of the given World. More... | |
| static std::ostream & err0 (TA::World &world) | |
Member Function Documentation
◆ argc()
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static |
Return an reference to the argument count.
◆ argv()
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static |
Return an reference to the argument vector.
◆ err0() [1/2]
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static |
Return an ostream for error messages that writes from process 0 of the default World.
- Note
- FormIO::set_printnode() can be used to specify which process this prints from
◆ err0() [2/2]
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static |
Return an ostream for error messages that writes from process 0 of the given World.
◆ errn()
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static |
Return an ostream for error messages that writes from all processes.
◆ getenv()
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static |
Return the value of an environment variable. If it does not exist, then an empty string is returned.
◆ hostname()
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static |
Return the host name.
◆ init()
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static |
Set the argument count and vector.
◆ initialized()
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static |
- Returns
- true if ExEnv has been initialized.
◆ out0() [1/2]
|
static |
Return an ostream that writes from process 0 of the default World.
- Note
- FormIO::set_printnode() can be used to specify which process this prints from
◆ out0() [2/2]
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static |
Return an ostream that writes from process 0 of the given World.
◆ outn()
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static |
Return an ostream that writes from all processes.
◆ pop_err()
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static |
replaces stderr with the stream used before the most recent call to ExEnv::push_err(), if any
◆ pop_out()
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static |
replaces stdout with the stream used before the most recent call to ExEnv::push_out(), if any
◆ program_name()
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static |
Return argv[0] with the path removed.
◆ push_err()
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static |
pushes current stderr to a stack and calls ExEnv::set_err(o)
- Parameters
-
o pointer to the std::ostream object to be used for standard error
◆ push_out()
|
static |
pushes current stdout to a stack and calls ExEnv::set_out(o)
- Parameters
-
o pointer to the std::ostream object to be used for standard output
◆ set_err()
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static |
Set the stderr stream on this rank to o
- Parameters
-
o pointer to the std::ostream object to be used for standard error; if given nullptrwill redirect stderr to/dev/null
◆ set_out()
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static |
Set the stdout stream on this rank to o
- Parameters
-
o pointer to the std::ostream object to be used for standard output; if given nullptrwill redirect stdout to/dev/null
- Note
owill be auto-indented via mpqc::FormIO::autoindent_ostream()
◆ username()
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static |
Return the user name.
The documentation for this class was generated from the following files:
