process

package
Version: v0.0.0-...-1f5fdd1 Latest Latest
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Published: Mar 17, 2015 License: BSD-3-Clause Imports: 19 Imported by: 0

Documentation

Overview

Package binary implements simple translation between numbers and byte sequences and encoding and decoding of varints.

Numbers are translated by reading and writing fixed-size values. A fixed-size value is either a fixed-size arithmetic type (int8, uint8, int16, float32, complex64, ...) or an array or struct containing only fixed-size values.

The varint functions encode and decode single integer values using a variable-length encoding; smaller values require fewer bytes. For a specification, see http://code.google.com/apis/protocolbuffers/docs/encoding.html.

This package favors simplicity over efficiency. Clients that require high-performance serialization, especially for large data structures, should look at more advanced solutions such as the encoding/gob package or protocol buffers.

Index

Constants

View Source
const (
	ClockTicks = 100  // C.sysconf(C._SC_CLK_TCK)
	PageSize   = 4096 // C.sysconf(C._SC_PAGE_SIZE)
)
View Source
const (
	PrioProcess = 0 // linux/resource.h
)

Variables

View Source
var BigEndian bigEndian

BigEndian is the big-endian implementation of ByteOrder.

View Source
var LittleEndian littleEndian

LittleEndian is the little-endian implementation of ByteOrder.

Functions

func PidExists

func PidExists(pid int32) (bool, error)

func Pids

func Pids() ([]int32, error)

func Read

func Read(r io.Reader, order ByteOrder, data interface{}) error

Read reads structured binary data from r into data. Data must be a pointer to a fixed-size value or a slice of fixed-size values. Bytes read from r are decoded using the specified byte order and written to successive fields of the data. When reading into structs, the field data for fields with blank (_) field names is skipped; i.e., blank field names may be used for padding. When reading into a struct, all non-blank fields must be exported.

func Size

func Size(v interface{}) int

Size returns how many bytes Write would generate to encode the value v, which must be a fixed-size value or a slice of fixed-size values, or a pointer to such data. If v is neither of these, Size returns -1.

func Write

func Write(w io.Writer, order ByteOrder, data interface{}) error

Write writes the binary representation of data into w. Data must be a fixed-size value or a slice of fixed-size values, or a pointer to such data. Bytes written to w are encoded using the specified byte order and read from successive fields of the data. When writing structs, zero values are written for fields with blank (_) field names.

Types

type ByteOrder

type ByteOrder interface {
	Uint16([]byte) uint16
	Uint32([]byte) uint32
	Uint64([]byte) uint64
	PutUint16([]byte, uint16)
	PutUint32([]byte, uint32)
	PutUint64([]byte, uint64)
	String() string
}

A ByteOrder specifies how to convert byte sequences into 16-, 32-, or 64-bit unsigned integers.

type IOCountersStat

type IOCountersStat struct {
	ReadCount  uint64 `json:"read_count"`
	WriteCount uint64 `json:"write_count"`
	ReadBytes  uint64 `json:"read_bytes"`
	WriteBytes uint64 `json:"write_bytes"`
}

func (IOCountersStat) String

func (i IOCountersStat) String() string

type MemoryInfoExStat

type MemoryInfoExStat struct {
	RSS    uint64 `json:"rss"`    // bytes
	VMS    uint64 `json:"vms"`    // bytes
	Shared uint64 `json:"shared"` // bytes
	Text   uint64 `json:"text"`   // bytes
	Lib    uint64 `json:"lib"`    // bytes
	Data   uint64 `json:"data"`   // bytes
	Dirty  uint64 `json:"dirty"`  // bytes
}

MemoryInfoExStat is different between OSes

func (MemoryInfoExStat) String

func (m MemoryInfoExStat) String() string

type MemoryInfoStat

type MemoryInfoStat struct {
	RSS  uint64 `json:"rss"`  // bytes
	VMS  uint64 `json:"vms"`  // bytes
	Swap uint64 `json:"swap"` // bytes
}

func (MemoryInfoStat) String

func (m MemoryInfoStat) String() string

type MemoryMapsStat

type MemoryMapsStat struct {
	Path         string `json:"path"`
	Rss          uint64 `json:"rss"`
	Size         uint64 `json:"size"`
	Pss          uint64 `json:"pss"`
	SharedClean  uint64 `json:"shared_clean"`
	SharedDirty  uint64 `json:"shared_dirty"`
	PrivateClean uint64 `json:"private_clean"`
	PrivateDirty uint64 `json:"private_dirty"`
	Referenced   uint64 `json:"referenced"`
	Anonymous    uint64 `json:"anonymous"`
	Swap         uint64 `json:"swap"`
}

func (MemoryMapsStat) String

func (m MemoryMapsStat) String() string

type NumCtxSwitchesStat

type NumCtxSwitchesStat struct {
	Voluntary   int64 `json:"voluntary"`
	Involuntary int64 `json:"involuntary"`
}

func (NumCtxSwitchesStat) String

func (p NumCtxSwitchesStat) String() string

type OpenFilesStat

type OpenFilesStat struct {
	Path string `json:"path"`
	Fd   uint64 `json:"fd"`
}

func (OpenFilesStat) String

func (o OpenFilesStat) String() string

type Process

type Process struct {
	Pid int32 `json:"pid"`
	// contains filtered or unexported fields
}

func NewProcess

func NewProcess(pid int32) (*Process, error)

Create new Process instance This only stores Pid

func (*Process) CPUAffinity

func (p *Process) CPUAffinity() ([]int32, error)

func (*Process) CPUPercent

func (p *Process) CPUPercent(interval time.Duration) (float64, error)

If interval is 0, return difference from last call(non-blocking). If interval > 0, wait interval sec and return diffrence between start and end.

func (*Process) CPUTimes

func (p *Process) CPUTimes() (*cpu.CPUTimesStat, error)

func (*Process) Children

func (p *Process) Children() ([]*Process, error)

func (*Process) Cmdline

func (p *Process) Cmdline() (string, error)

func (*Process) Connections

func (p *Process) Connections() ([]net.NetConnectionStat, error)

func (*Process) CreateTime

func (p *Process) CreateTime() (int64, error)

func (*Process) Cwd

func (p *Process) Cwd() (string, error)

func (*Process) Exe

func (p *Process) Exe() (string, error)

func (*Process) Gids

func (p *Process) Gids() ([]int32, error)

func (*Process) IOCounters

func (p *Process) IOCounters() (*IOCountersStat, error)

func (*Process) IOnice

func (p *Process) IOnice() (int32, error)

func (*Process) IsRunning

func (p *Process) IsRunning() (bool, error)

func (*Process) Kill

func (p *Process) Kill() error

func (*Process) MemoryInfo

func (p *Process) MemoryInfo() (*MemoryInfoStat, error)

func (*Process) MemoryInfoEx

func (p *Process) MemoryInfoEx() (*MemoryInfoExStat, error)

func (*Process) MemoryMaps

func (p *Process) MemoryMaps(grouped bool) (*[]MemoryMapsStat, error)

MemoryMaps get memory maps from /proc/(pid)/smaps

func (*Process) MemoryPercent

func (p *Process) MemoryPercent() (float32, error)

func (*Process) Name

func (p *Process) Name() (string, error)

func (*Process) Nice

func (p *Process) Nice() (int32, error)

func (*Process) NumCtxSwitches

func (p *Process) NumCtxSwitches() (*NumCtxSwitchesStat, error)

func (*Process) NumFDs

func (p *Process) NumFDs() (int32, error)

func (*Process) NumThreads

func (p *Process) NumThreads() (int32, error)

func (*Process) OpenFiles

func (p *Process) OpenFiles() ([]OpenFilesStat, error)

func (*Process) Parent

func (p *Process) Parent() (*Process, error)

func (*Process) Ppid

func (p *Process) Ppid() (int32, error)

func (*Process) Resume

func (p *Process) Resume() error

func (*Process) Rlimit

func (p *Process) Rlimit() ([]RlimitStat, error)

func (*Process) SendSignal

func (p *Process) SendSignal(sig syscall.Signal) error

func (*Process) Status

func (p *Process) Status() (string, error)

func (Process) String

func (p Process) String() string

func (*Process) Suspend

func (p *Process) Suspend() error

func (*Process) Terminal

func (p *Process) Terminal() (string, error)

func (*Process) Terminate

func (p *Process) Terminate() error

func (*Process) Threads

func (p *Process) Threads() (map[string]string, error)

func (*Process) Uids

func (p *Process) Uids() ([]int32, error)

func (*Process) Username

func (p *Process) Username() (string, error)

type RlimitStat

type RlimitStat struct {
	Resource int32 `json:"resource"`
	Soft     int32 `json:"soft"`
	Hard     int32 `json:"hard"`
}

func (RlimitStat) String

func (r RlimitStat) String() string

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