osex

Documentation

Index

• Constants
• Variables
• func ExecCmd(name string, params ...string) (string, string, error)
• func FreeOS()
• func GetCPUNum() int
• func GetCgroupMemoryLimit() (uint64, error)
• func GetCgroupProcessMemoryPercent() (float64, error)
• func GetExePath() (exePath string, err error)
• func GetFirstGopath(allowAutomaticGuessing bool) (gopath string, err error)
• func GetGoPath() []string
• func GetGoroutineNum() int
• func GetHostname() string
• func GetMemoryStat() (total, used, free uint64, usedPercent float64)
• func GetProcessCPUStat() (float64, error)
• func GetProcessMemoryPercent() (float32, error)
• func GetProcessMemoryStat() (uint64, error)
• func GetRoutineId() uint64
• func GetThreadNum() int
• func GetWorkDir() string
• func Gid() (id int64)
• func GoRoutine(function func())
• func GoRoutineInLoop(function func())
• func GoRoutineInTimer(duration time.Duration, function func())
• func GoSafely(wg *sync.WaitGroup, ignoreRecover bool, handler func(), ...)
• func GoUnterminated(handle func(), wg *sync.WaitGroup, ignoreRecover bool, period time.Duration)
• func GoVarLoop(n uint64, function func())
• func InitFreeOS()
• func IsCgroup() bool
• func IsLittleEndian() bool
• func OSIsUnix(os string) bool
• func RegisterSignalForPrintStack(sig os.Signal, callback func([]byte))
• func RegisterSignalForProfiling(sig ...os.Signal)
• func Reload() error
• func SwapEndianUin32(val uint32) uint32
• type OSMemStats
  • func GetOsMemStats() (OSMemStats, error)
• type Result
  • func Run(cmdLine string, timeout ...time.Duration) *Result
  • func (r *Result) Err() error
  • func (r *Result) String() string

Constants

const (
	OSWindows   = "windows"
	OSDarwin    = "darwin"
	OSDragonfly = "dragonfly"
	OSFreebsd   = "freebsd"
	OSLinux     = "linux"
	OSNacl      = "nacl"
	OSNetbsd    = "netbsd"
	OSOpenbsd   = "openbsd"
	OSSolaris   = "solaris"
)

These are the names of the operating systems recognized by Go.

Variables

var CurrentPID = os.Getpid()

CurrentPID returns the process id of the caller.

var OSUnix = []string{
	OSDarwin,
	OSDragonfly,
	OSFreebsd,
	OSLinux,
	OSNacl,
	OSNetbsd,
	OSOpenbsd,
	OSSolaris,
}

OSUnix is the list of unix-like operating systems recognized by Go. See http://golang.org/src/path/filepath/path_unix.go.

Functions

func ExecCmd

func ExecCmd(name string, params ...string) (string, string, error)

func FreeOS

func FreeOS()

func GetCPUNum

func GetCPUNum() int

GetCPUNum gets current os's cpu number

func GetCgroupMemoryLimit

func GetCgroupMemoryLimit() (uint64, error)

GetCgroupMemoryLimit returns a container's total memory in bytes

func GetCgroupProcessMemoryPercent

func GetCgroupProcessMemoryPercent() (float64, error)

GetCgroupProcessMemoryPercent gets current process's memory usage percent in cgroup env

func GetExePath

func GetExePath() (exePath string, err error)

func GetFirstGopath

func GetFirstGopath(allowAutomaticGuessing bool) (gopath string, err error)

GetFirstGopath gets the first $GOPATH value.

func GetGoPath

func GetGoPath() []string

GetGopaths returns the list of Go path directories.

func GetGoroutineNum

func GetGoroutineNum() int

GetGoroutineNum gets current process's goroutine number

func GetHostname

func GetHostname() string

GetHostname 获取主机名

func GetMemoryStat

func GetMemoryStat() (total, used, free uint64, usedPercent float64)

func GetProcessCPUStat

func GetProcessCPUStat() (float64, error)

GetProcessCPUStat gets current process's cpu stat

func GetProcessMemoryPercent

func GetProcessMemoryPercent() (float32, error)

GetProcessMemoryStat gets current process's memory usage percent

func GetProcessMemoryStat

func GetProcessMemoryStat() (uint64, error)

GetProcessMemoryStat gets current process's memory usage in Byte

func GetRoutineId

func GetRoutineId() uint64

func GetThreadNum

func GetThreadNum() int

func GetWorkDir

func GetWorkDir() string

获取程序运行目录

func Gid

func Gid() (id int64)

func GoRoutine

func GoRoutine(function func())

func GoRoutineInLoop

func GoRoutineInLoop(function func())

func GoRoutineInTimer

func GoRoutineInTimer(duration time.Duration, function func())

func GoSafely

func GoSafely(wg *sync.WaitGroup, ignoreRecover bool, handler func(), catchFunc func(r interface{}))

GoSafely wraps a `go func()` with recover()

func GoUnterminated

func GoUnterminated(handle func(), wg *sync.WaitGroup, ignoreRecover bool, period time.Duration)

GoUnterminated is used for which goroutine wanna long live as its process. @period: sleep time duration after panic to defeat @handle panic so frequently. if it is not positive,

the @handle will be invoked asap after panic.

func GoVarLoop

func GoVarLoop(n uint64, function func())

func InitFreeOS

func InitFreeOS()

func IsCgroup

func IsCgroup() bool

IsCgroup checks whether current os is a container or not

func IsLittleEndian

func IsLittleEndian() bool

func OSIsUnix

func OSIsUnix(os string) bool

OSIsUnix determines whether or not the given OS name is one of the unix-like operating systems recognized by Go.

func RegisterSignalForPrintStack

func RegisterSignalForPrintStack(sig os.Signal, callback func([]byte))

func RegisterSignalForProfiling

func RegisterSignalForProfiling(sig ...os.Signal)

func Reload

func Reload() error

func SwapEndianUin32

func SwapEndianUin32(val uint32) uint32

Types

type OSMemStats

type OSMemStats struct {
	SwapTotal       uint64
	SwapUsed        uint64
	SwapFree        uint64
	SwapUsedPercent float64
	SwapIn          uint64
	SwapOut         uint64

	MemTotal       uint64
	MemAvailable   uint64
	MemUsed        uint64
	MemUsedPercent float64
	MemBuffers     uint64
	MemCached      uint64
}

func GetOsMemStats

func GetOsMemStats() (OSMemStats, error)

type Result

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

Result cmd exec result

func Run

func Run(cmdLine string, timeout ...time.Duration) *Result

Run exec cmd and catch the result. Waits for the given command to finish with a timeout. If the command times out, it attempts to kill the process.

func (*Result) Err

func (r *Result) Err() error

Err returns the error log.

func (*Result) String

func (r *Result) String() string

String returns the exec log.