class Kernel

Kernel related information

class Kernel does Systemic { }

Built-in class for providing kernel related information. Usually accessed through the $*KERNEL dynamic variable.

Methods

method arch

method arch

Instance method returning the "arch" (as in "architecture") information of the Kernel object. Dies if the "arch" could not be established.

method archname

method archname

Instance method returning the concatenation of hardware and name.

method bits

method bits

Instance method returning the number of bits used in the architecture of the processor. Usually 32 or 64.

method cpu-cores

method cpu-cores(--> Int)

Instance / Class method returning the number of CPU cores that are available.

say $*KERNEL.cpu-cores# OUTPUT: «8␤» 

method cpu-usage

method cpu-usage(--> Int)

Instance / Class method returning the amount of CPU uses since the start of the program (in microseconds).

method free-memory

method free-memory(--> Int)

Instance / Class method returning the available memory on the system. When using the JVM, this returns the available memory to the JVM instead. This method is only available in release v2019.06 and later.

method total-memory

method total-memory(--> Int)

Instance / Class method returning the total memory available to the system. When using the JVM, this returns the total memory available to the JVM instead. This method is only available in release v2019.06 and later.

method endian

method endian(--> Endian:D)

Class method that returns the Endian object associated with the kernel architecture (either LittleEndian or BigEndian).

method hardware

Defined as

method hardware

Instance method returning the hardware information of the Kernel object. Dies if the hardware information could not be established.

say $*KERNEL.hardware# OUTPUT: «x86_64␤» 

method hostname

method hostname

Instance method returning the hostname of the Kernel object.

method release

method release

Instance method returning the release information of the Kernel object. Dies if the release information could not be established.

method signal

Defined as:

multi method signal(Kernel:D: Str:D $signal --> Int:D)
multi method signal(Kernel:D: Signal:D \signal --> Int:D)
multi method signal(Kernel:D: Int:D \signal --> Int:D)

Instance method returning the Signal numeric code for a given name for the Kernel object.

say $*KERNEL.signal("INT"); # OUTPUT: «2␤» 

method signals

Instance method returning a list of Signals that are supported by the kernel represented by the Kernel object.

Type Graph

Type relations for Kernel
perl6-type-graph Kernel Kernel Any Any Kernel->Any Mu Mu Any->Mu

Expand above chart