powerd++.cpp File Reference

Implements powerd++ a drop in replacement for FreeBSD's powerd. More...

#include "Options.hpp"
#include "Cycle.hpp"
#include "types.hpp"
#include "constants.hpp"
#include "errors.hpp"
#include "clas.hpp"
#include "utility.hpp"
#include "sys/sysctl.hpp"
#include "sys/pidfile.hpp"
#include "sys/signal.hpp"
#include "sys/io.hpp"
#include <locale>
#include <memory>
#include <algorithm>
#include <limits>
#include <cstdlib>
#include <cstdint>
#include <sys/resource.h>

Include dependency graph for powerd++.cpp:

Classes
struct	anonymous_namespace{powerd++.cpp}::CoreGroup
	Contains the management information for a group of cores with a common clock frequency. More...
struct	anonymous_namespace{powerd++.cpp}::Core
	Contains the management information for a single CPU core. More...
struct	anonymous_namespace{powerd++.cpp}::Global
	A collection of all the gloabl, mutable states. More...
struct	anonymous_namespace{powerd++.cpp}::Global::ACSet
	Per AC line state settings. More...
class	anonymous_namespace{powerd++.cpp}::FreqGuard
	A core frequency guard. More...

Namespaces
	anonymous_namespace{powerd++.cpp}
	File local scope.

Enumerations
enum	anonymous_namespace{powerd++.cpp}::AcLineState : unsigned int { anonymous_namespace{powerd++.cpp}::AcLineState::BATTERY, anonymous_namespace{powerd++.cpp}::AcLineState::ONLINE, anonymous_namespace{powerd++.cpp}::AcLineState::UNKNOWN, anonymous_namespace{powerd++.cpp}::AcLineState::LENGTH }
	The available AC line states. More...
enum	anonymous_namespace{powerd++.cpp}::OE {   anonymous_namespace{powerd++.cpp}::OE::USAGE, anonymous_namespace{powerd++.cpp}::OE::MODE_AC, anonymous_namespace{powerd++.cpp}::OE::MODE_BATT, anonymous_namespace{powerd++.cpp}::OE::FREQ_MIN,   anonymous_namespace{powerd++.cpp}::OE::FREQ_MAX, anonymous_namespace{powerd++.cpp}::OE::FREQ_MIN_AC, anonymous_namespace{powerd++.cpp}::OE::FREQ_MAX_AC, anonymous_namespace{powerd++.cpp}::OE::FREQ_MIN_BATT,   anonymous_namespace{powerd++.cpp}::OE::FREQ_MAX_BATT, anonymous_namespace{powerd++.cpp}::OE::FREQ_RANGE, anonymous_namespace{powerd++.cpp}::OE::FREQ_RANGE_AC, anonymous_namespace{powerd++.cpp}::OE::FREQ_RANGE_BATT,   anonymous_namespace{powerd++.cpp}::OE::HITEMP_RANGE, anonymous_namespace{powerd++.cpp}::OE::MODE_UNKNOWN, anonymous_namespace{powerd++.cpp}::OE::TEMP_CTL, anonymous_namespace{powerd++.cpp}::OE::IVAL_POLL,   anonymous_namespace{powerd++.cpp}::OE::FILE_PID, anonymous_namespace{powerd++.cpp}::OE::FLAG_VERBOSE, anonymous_namespace{powerd++.cpp}::OE::FLAG_FOREGROUND, anonymous_namespace{powerd++.cpp}::OE::FLAG_NICE,   anonymous_namespace{powerd++.cpp}::OE::CNT_SAMPLES, anonymous_namespace{powerd++.cpp}::OE::IGNORE, anonymous_namespace{powerd++.cpp}::OE::OPT_UNKNOWN, anonymous_namespace{powerd++.cpp}::OE::OPT_NOOPT,   anonymous_namespace{powerd++.cpp}::OE::OPT_DASH, anonymous_namespace{powerd++.cpp}::OE::OPT_LDASH, anonymous_namespace{powerd++.cpp}::OE::OPT_DONE }
	An enum for command line parsing. More...

Functions
template<typename... MsgTs>
void	anonymous_namespace{powerd++.cpp}::verbose (MsgTs &&... msg)
	Outputs the given printf style message on stderr if g.verbose is set. More...
void	anonymous_namespace{powerd++.cpp}::sysctl_fail (sys::sc_error< sys::ctl::error > const err)
	Treat sysctl errors. More...
void	anonymous_namespace{powerd++.cpp}::init ()
	Perform initial tasks. More...
template<bool Load = 1, bool Temperature = 0>
void	anonymous_namespace{powerd++.cpp}::update_loads ()
	Updates the cp_times ring buffer and computes the load average for each core. More...
template<>
void	anonymous_namespace{powerd++.cpp}::update_loads< 0, 0 > ()
	Do nada if neither load nor temperature are to be updated.
template<bool Foreground, bool Temperature, bool Fixed>
void	anonymous_namespace{powerd++.cpp}::update_freq (Global::ACSet const &acstate)
	Update the CPU clocks depending on the AC line state and targets. More...
void	anonymous_namespace{powerd++.cpp}::update_freq ()
	Dispatch update_freq<>().
void	anonymous_namespace{powerd++.cpp}::init_loads ()
	Fill the loads buffers with n samples. More...
void	anonymous_namespace{powerd++.cpp}::set_mode (AcLineState const line, char const *const str)
	Sets a load target or fixed frequency for the given AC line state. More...
void	anonymous_namespace{powerd++.cpp}::read_args (int const argc, char const *const argv[])
	Parse command line arguments. More...
void	anonymous_namespace{powerd++.cpp}::show_settings ()
	Prints the configuration on stderr in verbose mode.
void	anonymous_namespace{powerd++.cpp}::signal_recv (int signal)
	Sets g.signal, terminating the main loop. More...
void	anonymous_namespace{powerd++.cpp}::run_daemon ()
	Daemonise and run the main loop.
int	main (int argc, char *argv[])
	Main routine, setup and execute daemon, print errors. More...

Variables
struct anonymous_namespace{powerd++.cpp}::Global	anonymous_namespace{powerd++.cpp}::g
	The gobal state.
const char *const	anonymous_namespace{powerd++.cpp}::USAGE = "[-hvfN] [-abn mode] [-mM freq] [-FAB freq:freq] [-H temp:temp] [-t sysctl] [-p ival] [-s cnt] [-P file]"
	The short usage string.
const Parameter< OE >	anonymous_namespace{powerd++.cpp}::PARAMETERS []
	Definitions of command line parameters. More...

Detailed Description

Implements powerd++ a drop in replacement for FreeBSD's powerd.

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Class Documentation

anonymous_namespace{powerd++.cpp}::CoreGroup

struct anonymous_namespace{powerd++.cpp}::CoreGroup

Contains the management information for a group of cores with a common clock frequency.

Collaboration diagram for anonymous_namespace{powerd++.cpp}::CoreGroup:

Class Members
coreid_t	corei	The number of the core owning dev.cpu. d.freq.
SysctlSync< mhz_t >	freq	The sysctl dev.cpu. d.freq.
Max< mhz_t >	load	The maximum load reported by all cores in the group. This is updated by update_loads().
unique_ptr< mhz_t[]>	loads	A ring buffer of maximum load samples for this core group. Each maximum load sample is weighted with the core frequency at which it was taken. This is updated by update_loads().
mhz_t	loadsum	The maximum load sum of all controlled cores. This is updated by update_loads().
Min< mhz_t >	max	The maximum group clock rate. The least of all core maxima in the group.
Max< mhz_t >	min	The minimum group clock rate. The greatest of all core minima in the group.
mhz_t	sample_freq	The dev.cpu. d.freq value for the current load sample. This is updated by update_loads().
Max< decikelvin_t >	temp	The maximum temperature measurement taken in the group.
Min< decikelvin_t >	temp_crit	Critical core temperature in dK.
Min< decikelvin_t >	temp_high	High core temperature in dK.

anonymous_namespace{powerd++.cpp}::Core

struct anonymous_namespace{powerd++.cpp}::Core

Contains the management information for a single CPU core.

Collaboration diagram for anonymous_namespace{powerd++.cpp}::Core:

Class Members
cptime_t	all	Count of all ticks.
const cptime_t *	cp_time	A pointer to the kern.cp_times section for this core.
CoreGroup *	group	The core that controls the frequency for this core.
cptime_t	idle	The idle ticks count.
SysctlSync< decikelvin_t >	temp	The dev.cpu. d.temperature sysctl, if present.

anonymous_namespace{powerd++.cpp}::Global::ACSet

struct anonymous_namespace{powerd++.cpp}::Global::ACSet

Per AC line state settings.

Collaboration diagram for anonymous_namespace{powerd++.cpp}::Global::ACSet:

Class Members
mhz_t	freq_max	Highest frequency to set in MHz.
mhz_t	freq_min	Lowest frequency to set in MHz.
const char *const	name	The string representation of this state.
mhz_t	target_freq	Fixed clock frequencies to use if the target load is set to 0.
cptime_t	target_load	Target load times [0, 1024]. The value 0 indicates the corresponding fixed frequency setting from target_freqs should be used.

Function Documentation

main()

int main	(	int	argc,
		char *	argv[]
	)

Main routine, setup and execute daemon, print errors.

Parameters

argc,argv

The command line arguments

Returns

An exit code

See also

Exit