process

package
v2.17.10+incompatible Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Oct 18, 2017 License: BSD-3-Clause Imports: 21 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	RLIMIT_CPU        int32 = 0
	RLIMIT_FSIZE      int32 = 1
	RLIMIT_DATA       int32 = 2
	RLIMIT_STACK      int32 = 3
	RLIMIT_CORE       int32 = 4
	RLIMIT_RSS        int32 = 5
	RLIMIT_NPROC      int32 = 6
	RLIMIT_NOFILE     int32 = 7
	RLIMIT_MEMLOCK    int32 = 8
	RLIMIT_AS         int32 = 9
	RLIMIT_LOCKS      int32 = 10
	RLIMIT_SIGPENDING int32 = 11
	RLIMIT_MSGQUEUE   int32 = 12
	RLIMIT_NICE       int32 = 13
	RLIMIT_RTPRIO     int32 = 14
	RLIMIT_RTTIME     int32 = 15
)

Resource limit constants are from /usr/include/x86_64-linux-gnu/bits/resource.h from libc6-dev package in Ubuntu 16.10

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

Variables

View Source 
var (
	ErrorNoChildren = errors.New("process does not have children")
	PageSize        = uint64(os.Getpagesize())
)

Functions

func PidExists 

func PidExists(pid int32) (bool, error)

func Pids 

func Pids() ([]int32, error)

Pids returns a slice of process ID list which are running now.

Types

type IOCountersStat 

type IOCountersStat struct {
	ReadCount  uint64 `json:"readCount"`
	WriteCount uint64 `json:"writeCount"`
	ReadBytes  uint64 `json:"readBytes"`
	WriteBytes uint64 `json:"writeBytes"`
}

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
	Data   uint64 `json:"data"`   // bytes
	Stack  uint64 `json:"stack"`  // bytes
	Locked uint64 `json:"locked"` // 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:"sharedClean"`
	SharedDirty  uint64 `json:"sharedDirty"`
	PrivateClean uint64 `json:"privateClean"`
	PrivateDirty uint64 `json:"privateDirty"`
	Referenced   uint64 `json:"referenced"`
	Anonymous    uint64 `json:"anonymous"`
	Swap         uint64 `json:"swap"`
}

func (MemoryMapsStat) String 

func (m MemoryMapsStat) String() string

String returns JSON value of the process.

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)

NewProcess creates a new Process instance, it only stores the pid and checks that the process exists. Other method on Process can be used to get more information about the process. An error will be returned if the process does not exist.

func (*Process) CPUAffinity 

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

CPUAffinity returns CPU affinity of the process.

Notice: Not implemented yet.

func (*Process) CPUPercent 

func (p *Process) CPUPercent() (float64, error)

CPU_Percent returns how many percent of the CPU time this process uses

func (*Process) Children 

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

Children returns a slice of Process of the process.

func (*Process) Cmdline 

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

Cmdline returns the command line arguments of the process as a string with each argument separated by 0x20 ascii character.

func (*Process) CmdlineSlice 

func (p *Process) CmdlineSlice() ([]string, error)

CmdlineSlice returns the command line arguments of the process as a slice with each element being an argument.

func (*Process) Connections 

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

Connections returns a slice of net.ConnectionStat used by the process. This returns all kind of the connection. This measn TCP, UDP or UNIX.

func (*Process) CreateTime 

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

CreateTime returns created time of the process in milliseconds since the epoch, in UTC.

func (*Process) Cwd 

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

Cwd returns current working directory of the process.

func (*Process) Exe 

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

Exe returns executable path of the process.

func (*Process) Gids 

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

Gids returns group ids of the process as a slice of the int

func (*Process) IOCounters 

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

IOCounters returns IO Counters.

func (*Process) IOnice 

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

IOnice returns process I/O nice value (priority).

func (*Process) IsRunning 

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

IsRunning returns whether the process is running or not. Not implemented yet.

func (*Process) Kill 

func (p *Process) Kill() error

Kill sends SIGKILL to the process.

func (*Process) MemoryInfo 

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

MemoryInfo returns platform in-dependend memory information, such as RSS, VMS and Swap

func (*Process) MemoryInfoEx 

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

MemoryInfoEx returns platform dependend memory information.

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)

MemoryPercent returns how many percent of the total RAM this process uses

func (*Process) Name 

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

Name returns name of the process.

func (*Process) NetIOCounters 

func (p *Process) NetIOCounters(pernic bool) ([]net.IOCountersStat, error)

NetIOCounters returns NetIOCounters of the process.

func (*Process) Nice 

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

Nice returns a nice value (priority). Notice: gopsutil can not set nice value.

func (*Process) NumCtxSwitches 

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

NumCtxSwitches returns the number of the context switches of the process.

func (*Process) NumFDs 

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

NumFDs returns the number of File Descriptors used by the process.

func (*Process) NumThreads 

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

NumThreads returns the number of threads used by the process.

func (*Process) OpenFiles 

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

OpenFiles returns a slice of OpenFilesStat opend by the process. OpenFilesStat includes a file path and file descriptor.

func (*Process) Parent 

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

Parent returns parent Process of the process.

func (*Process) Percent 

func (p *Process) Percent(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) Ppid 

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

Ppid returns Parent Process ID of the process.

func (*Process) Resume 

func (p *Process) Resume() error

Resume sends SIGCONT to the process.

func (*Process) Rlimit 

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

Rlimit returns Resource Limits.

func (*Process) RlimitUsage 

func (p *Process) RlimitUsage(gatherUsed bool) ([]RlimitStat, error)

RlimitUsage returns Resource Limits. If gatherUsed is true, the currently used value will be gathered and added to the resulting RlimitStat.

func (*Process) SendSignal 

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

SendSignal sends a unix.Signal to the process. Currently, SIGSTOP, SIGCONT, SIGTERM and SIGKILL are supported.

func (*Process) Status 

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

Status returns the process status. Return value could be one of these. R: Running S: Sleep T: Stop I: Idle Z: Zombie W: Wait L: Lock The charactor is same within all supported platforms.

func (Process) String 

func (p Process) String() string

func (*Process) Suspend 

func (p *Process) Suspend() error

Suspend sends SIGSTOP to the process.

func (*Process) Terminal 

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

Terminal returns a terminal which is associated with the process.

func (*Process) Terminate 

func (p *Process) Terminate() error

Terminate sends SIGTERM to the process.

func (*Process) Threads 

func (p *Process) Threads() (map[int32]*cpu.TimesStat, error)

func (*Process) Times 

func (p *Process) Times() (*cpu.TimesStat, error)

Times returns CPU times of the process.

func (*Process) Uids 

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

Uids returns user ids of the process as a slice of the int

func (*Process) Username 

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

Username returns a username of the process.

type RlimitStat 

type RlimitStat struct {
	Resource int32  `json:"resource"`
	Soft     int32  `json:"soft"` //TODO too small. needs to be uint64
	Hard     int32  `json:"hard"` //TODO too small. needs to be uint64
	Used     uint64 `json:"used"`
}

func (RlimitStat) String 

func (r RlimitStat) String() string

type SignalInfoStat 

type SignalInfoStat struct {
	PendingProcess uint64 `json:"pending_process"`
	PendingThread  uint64 `json:"pending_thread"`
	Blocked        uint64 `json:"blocked"`
	Ignored        uint64 `json:"ignored"`
	Caught         uint64 `json:"caught"`
}

Source Files

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