System.MemInfo.Proc

This module provides types that model data from files in the Linux proc filesystem that track memory usage, combinators for parsing the files contents, and for grouping the results.

Combine process memory metrics

data MemUsage

Represents the measured memory usage of a program

Constructors

MemUsage

Fields

• muShared :: !Int

  the total shared memory in use

• muPrivate :: !Int

  the total private memory in use

• muCount :: !Int

  the number of processes running as the program

• muSwap :: !Int

  the total swap memory in use

Instances

Show MemUsage

Defined in System.MemInfo.Proc

Methods

showsPrec :: Int -> MemUsage -> ShowS

show :: MemUsage -> String

showList :: [MemUsage] -> ShowS

Eq MemUsage

Defined in System.MemInfo.Proc

Methods

(==) :: MemUsage -> MemUsage -> Bool

(/=) :: MemUsage -> MemUsage -> Bool

amass :: Ord a => Bool -> [(a, ProcUsage)] -> Map a MemUsage

Combine ProcUsage, grouping them by the effective program name

Parse process memory metrics

data ProcUsage

Represents the memory metrics for a single process

Constructors

ProcUsage

Fields

• puPrivate :: !Int
• puShared :: !Int
• puSharedHuge :: !Int
• puSwap :: !Int
• puMemId :: !Int

Instances

Show ProcUsage

Defined in System.MemInfo.Proc

Methods

showsPrec :: Int -> ProcUsage -> ShowS

show :: ProcUsage -> String

showList :: [ProcUsage] -> ShowS

Eq ProcUsage

Defined in System.MemInfo.Proc

Methods

(==) :: ProcUsage -> ProcUsage -> Bool

(/=) :: ProcUsage -> ProcUsage -> Bool

parseFromSmap :: Text -> ProcUsage

Parse ProcUsage from the contents of /proc/<pid>/smap

parseFromStatm :: KernelVersion -> Text -> Maybe ProcUsage

Parse ProcUsage from the contents of /proc/<pid>/statm

Parse /proc/<pid>/exe

data ExeInfo

Represents the information about a process obtained from /proc/<pid>/exe

Constructors

ExeInfo

Fields

• eiTarget :: !Text

  the path that the link /proc/<pid>/exe resolves to

• eiOriginal :: !Text

  a sanitized form of eiTarget; it removes the (deleted) suffix

• eiDeleted :: !Bool

  does eiTarget end with (deleted)?

Instances

Generic ExeInfo

Defined in System.MemInfo.Proc

Associated Types

type Rep ExeInfo :: Type -> Type

Methods

from :: ExeInfo -> Rep ExeInfo x

to :: Rep ExeInfo x -> ExeInfo

Show ExeInfo

Defined in System.MemInfo.Proc

Methods

showsPrec :: Int -> ExeInfo -> ShowS

show :: ExeInfo -> String

showList :: [ExeInfo] -> ShowS

Eq ExeInfo

Defined in System.MemInfo.Proc

Methods

(==) :: ExeInfo -> ExeInfo -> Bool

(/=) :: ExeInfo -> ExeInfo -> Bool

Validity ExeInfo

Defined in System.MemInfo.Proc

Methods

validate :: ExeInfo -> Validation

type Rep ExeInfo

Defined in System.MemInfo.Proc

type Rep ExeInfo = D1 ('MetaData "ExeInfo" "System.MemInfo.Proc" "mem-info-0.1.0.0-inplace" 'False) (C1 ('MetaCons "ExeInfo" 'PrefixI 'True) (S1 ('MetaSel ('Just "eiTarget") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Text) :*: (S1 ('MetaSel ('Just "eiOriginal") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Text) :*: S1 ('MetaSel ('Just "eiDeleted") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Bool))))

parseExeInfo :: Text -> ExeInfo

Parses the target of /proc/<pid>/exe into a ExeInfo

Parse /proc/<pid>/status

parseStatusInfo :: Text -> Either BadStatus StatusInfo

Parses the content of /proc/<pid>/status into a StatusInfo

data StatusInfo

Represents the information about a process obtained from procpid/status

Constructors

StatusInfo

Fields

• siName :: !Text
• siParent :: !ProcessID

Instances

Generic StatusInfo

Defined in System.MemInfo.Proc

Associated Types

type Rep StatusInfo :: Type -> Type

Methods

from :: StatusInfo -> Rep StatusInfo x

to :: Rep StatusInfo x -> StatusInfo

Show StatusInfo

Defined in System.MemInfo.Proc

Methods

showsPrec :: Int -> StatusInfo -> ShowS

show :: StatusInfo -> String

showList :: [StatusInfo] -> ShowS

Eq StatusInfo

Defined in System.MemInfo.Proc

Methods

(==) :: StatusInfo -> StatusInfo -> Bool

(/=) :: StatusInfo -> StatusInfo -> Bool

Validity StatusInfo

Defined in System.MemInfo.Proc

Methods

validate :: StatusInfo -> Validation

type Rep StatusInfo

Defined in System.MemInfo.Proc

type Rep StatusInfo = D1 ('MetaData "StatusInfo" "System.MemInfo.Proc" "mem-info-0.1.0.0-inplace" 'False) (C1 ('MetaCons "StatusInfo" 'PrefixI 'True) (S1 ('MetaSel ('Just "siName") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 Text) :*: S1 ('MetaSel ('Just "siParent") 'NoSourceUnpackedness 'SourceStrict 'DecidedStrict) (Rec0 ProcessID)))

data BadStatus

Indicates why parseStatusInfo failed

Constructors

NoCmd

NoParent

Instances

Show BadStatus

Defined in System.MemInfo.Proc

Methods

showsPrec :: Int -> BadStatus -> ShowS

show :: BadStatus -> String

showList :: [BadStatus] -> ShowS

Eq BadStatus

Defined in System.MemInfo.Proc

Methods

(==) :: BadStatus -> BadStatus -> Bool

(/=) :: BadStatus -> BadStatus -> Bool