process

package
v0.13.0 Latest Latest
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 Go to latest Published: Feb 29, 2016 License: Apache-2.0 Imports: 15 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	PID            = "pid"
	Name           = "name"
	PPID           = "ppid"
	Cmdline        = "cmdline"
	Threads        = "threads"
	CPUUsage       = "process_cpu_usage_percent"
	MemoryUsage    = "process_memory_usage_bytes"
	OpenFilesCount = "open_files_count"
)

We use these keys in node metadata

Variables

This section is empty.

Functions

func GetDeltaTotalJiffies added in v0.12.0 

func GetDeltaTotalJiffies() (uint64, float64, error)

GetDeltaTotalJiffies returns the number of jiffies that have passed since it was last called. In that respect, it is side-effect-ful.

Types

type CachingWalker 

type CachingWalker struct {
	// contains filtered or unexported fields
}

CachingWalker is a walker than caches a copy of the output from another Walker, and then allows other concurrent readers to Walk that copy.

func NewCachingWalker 

func NewCachingWalker(source Walker) *CachingWalker

NewCachingWalker returns a new CachingWalker

func (*CachingWalker) Name added in v0.10.0 

func (*CachingWalker) Name() string

Name of this ticker, for metrics gathering

func (*CachingWalker) Tick 

func (c *CachingWalker) Tick() error

Tick updates cached copy of process list

func (*CachingWalker) Walk 

func (c *CachingWalker) Walk(f func(Process, Process)) error

Walk walks a cached copy of process list

type Jiffies added in v0.12.0 

type Jiffies func() (uint64, float64, error)

Jiffies is the type for the function used to fetch the elapsed jiffies.

type Process 

type Process struct {
	PID, PPID      int
	Name           string
	Cmdline        string
	Threads        int
	Jiffies        uint64
	RSSBytes       uint64
	OpenFilesCount int
}

Process represents a single process.

type Reporter 

type Reporter struct {
	// contains filtered or unexported fields
}

Reporter generates Reports containing the Process topology.

func NewReporter 

func NewReporter(walker Walker, scope string, jiffies Jiffies) *Reporter

NewReporter makes a new Reporter.

func (Reporter) Name added in v0.10.0 

func (Reporter) Name() string

Name of this reporter, for metrics gathering

func (*Reporter) Report 

func (r *Reporter) Report() (report.Report, error)

Report implements Reporter.

type Tree 

type Tree interface {
	GetParent(pid int) (int, error)
	GetChildren(pid int) ([]int, error)
}

Tree represents all processes on the machine.

func NewTree 

func NewTree(walker Walker) (Tree, error)

NewTree returns a new Tree that can be polled.

type Walker 

type Walker interface {
	Walk(func(Process, Process)) error
}

Walker is something that walks the /proc directory

func NewWalker 

func NewWalker(procRoot string) Walker

NewWalker creates a new process Walker.

Source Files

  • cache.go
  • reporter.go
  • tree.go
  • walker.go
  • walker_linux.go

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