errors Namespace Reference

Common error handling types and functions. More...

Classes
struct	Exception
	Exceptions bundle an exit code, errno value and message. More...

Enumerations
enum	Exit : int {   Exit::OK, Exit::ECLARG, Exit::EOUTOFRANGE, Exit::ELOAD,   Exit::EFREQ, Exit::EMODE, Exit::EIVAL, Exit::ESAMPLES,   Exit::ESYSCTL, Exit::ENOFREQ, Exit::ECONFLICT, Exit::EPID,   Exit::EFORBIDDEN, Exit::EDAEMON, Exit::EWOPEN, Exit::ESIGNAL,   Exit::ERANGEFMT, Exit::ETEMPERATURE, Exit::EEXCEPT, Exit::EFILE,   Exit::EEXEC, Exit::EDRIVER, Exit::ESYSCTLNAME, Exit::EFORMATFIELD,   Exit::LENGTH }
	Exit codes. More...

Functions
void	fail (Exit const exitcode, int const err, std::string const &msg)
	Throws an Exception instance with the given message. More...

Variables
const char *const	ExitStr []
	Printable strings for exit codes. More...

Detailed Description

Common error handling types and functions.

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Class Documentation

errors::Exception

struct errors::Exception

Exceptions bundle an exit code, errno value and message.

Collaboration diagram for errors::Exception:

Class Members
int	err	The errno value at the time of creation.
Exit	exitcode	The code to exit with.
string	msg	An error message.

Enumeration Type Documentation

Exit

enum errors::Exit : int

strong

Exit codes.

Enumerator
OK	Regular termination.
ECLARG	Unexpected command line argument.
EOUTOFRANGE	A user provided value is out of range.
ELOAD	The provided value is not a valid load.
EFREQ	The provided value is not a valid frequency.
EMODE	The provided value is not a valid mode.
EIVAL	The provided value is not a valid interval.
ESAMPLES	The provided value is not a valid sample count.
ESYSCTL	A sysctl operation failed.
ENOFREQ	System does not support changing core frequencies.
ECONFLICT	Another frequency daemon instance is running.
EPID	A pidfile could not be created.
EFORBIDDEN	Insufficient privileges to change sysctl.
EDAEMON	Unable to detach from terminal.
EWOPEN	Could not open file for writing.
ESIGNAL	Failed to install signal handler.
ERANGEFMT	A user provided range is missing the separator.
ETEMPERATURE	The provided value is not a valid temperature.
EEXCEPT	Untreated exception.
EFILE	Not a valid file name.
EEXEC	Command execution failed.
EDRIVER	Frequency driver does not allow manual control.
ESYSCTLNAME	User provided sysctl contains invalid characters.
EFORMATFIELD	Formatting string contains unexpected field.
LENGTH	Enum length.

Function Documentation

fail()

void errors::fail ( Exit const  exitcode, int const  err, std::string const &  msg  )

inline

Throws an Exception instance with the given message.

Parameters

exitcode	The exit code to return on termination
err	The errno value at the time the exception was created
msg	The message to show

Variable Documentation

ExitStr

const char* const errors::ExitStr[]

Initial value:

{
    "OK", "ECLARG", "EOUTOFRANGE", "ELOAD", "EFREQ", "EMODE", "EIVAL",
    "ESAMPLES", "ESYSCTL", "ENOFREQ", "ECONFLICT", "EPID", "EFORBIDDEN",
    "EDAEMON", "EWOPEN", "ESIGNAL", "ERANGEFMT", "ETEMPERATURE",
    "EEXCEPT", "EFILE", "EEXEC", "EDRIVER", "ESYSCTLNAME", "EFORMATFIELD"
}

Printable strings for exit codes.