utils

Documentation

Index

• Variables
• func Command(timeout time.Duration, name string, arg ...string) ([]byte, error)
• func DumpHeap()
• func ExecuteTemplate(tpl string, data interface{}, post_process func(string) string) (string, error)
• func FindAllTemplateKeys(tpl string) (res []string)
• func GC()
• func HttpPprofServe(port int)
• func IsAlNum(s string) bool
• func IsDigit(s string) bool
• func IsDirectory(path string) (bool, error)
• func MustPositiveInterval(interval string, dft time.Duration) time.Duration
• func PathExists(path string) (bool, error)
• func PrintGCSummary()
• func ReadCommand(line func(string) error, name string, arg ...string) error
• func ReadCommandTimeout(timeout time.Duration, line func(string) error, name string, arg ...string) error
• func ReadLine(fname string, line func(string) error) error
• func Recover_and_log()
• func SetMemProfileRate(rate int)
• func ShowGCStat()
• func StartBlockProfile(rate int)
• func StartCPUProfile()
• func StopBlockProfile()
• func StopCPUProfile()
• type SMA
  • func (m *SMA) Calc(x float64) (float64, error)

Variables

var (
	// ErrPath is returned by Command if the program is not in the PATH.
	ErrPath = errors.New("program not in PATH")
	// ErrTimeout is returned by Command if the program timed out.
	ErrTimeout = errors.New("program killed after timeout")
)

Functions

func Command

func Command(timeout time.Duration, name string, arg ...string) ([]byte, error)

Command executes the named program with the given arguments. If it does not exit within timeout, it is sent SIGINT (if supported by Go). After another timeout, it is killed.

func DumpHeap

func DumpHeap()

func ExecuteTemplate

func ExecuteTemplate(tpl string, data interface{}, post_process func(string) string) (string, error)

FIXME: leaking param: data

func FindAllTemplateKeys

func FindAllTemplateKeys(tpl string) (res []string)

func GC

func GC()

func HttpPprofServe

func HttpPprofServe(port int)

func IsAlNum

func IsAlNum(s string) bool

IsAlNum returns true if s is alphanumeric.

func IsDigit

func IsDigit(s string) bool

IsDigit returns true if s consists of decimal digits.

func IsDirectory

func IsDirectory(path string) (bool, error)

func MustPositiveInterval

func MustPositiveInterval(interval string, dft time.Duration) time.Duration

FIXME: dft should also > 0

func PathExists

func PathExists(path string) (bool, error)

exists returns whether the given file or directory exists or not

func PrintGCSummary

func PrintGCSummary()

func ReadCommand

func ReadCommand(line func(string) error, name string, arg ...string) error

ReadCommand runs command name with args and calls line for each line from its stdout. Command is interrupted (if supported by Go) after 10 seconds and killed after 20 seconds.

func ReadCommandTimeout

func ReadCommandTimeout(timeout time.Duration, line func(string) error, name string, arg ...string) error

ReadCommandTimeout is the same as ReadCommand with a specifiable timeout.

func ReadLine

func ReadLine(fname string, line func(string) error) error

func Recover_and_log

func Recover_and_log()

func SetMemProfileRate

func SetMemProfileRate(rate int)

func ShowGCStat

func ShowGCStat()

func StartBlockProfile

func StartBlockProfile(rate int)

func StartCPUProfile

func StartCPUProfile()

func StopBlockProfile

func StopBlockProfile()

func StopCPUProfile

func StopCPUProfile()

Types

type SMA

type SMA struct {
	N int
	// contains filtered or unexported fields
}

func (*SMA) Calc

func (m *SMA) Calc(x float64) (float64, error)

FIXME: .\math_sma.go:15: leaking param: m