file

Documentation

Overview

Package file implements file utils.

Index

• Variables
• func CheckExecutable(file string) error
• func CheckFDLimitSupported() bool
• func CheckFileHandlesSupported() bool
• func FindLibrary(name string, opts ...OpOption) (string, error)
• func GetFileHandles() (uint64, uint64, error)
• func GetLimit() (uint64, error)
• func GetUsage() (uint64, error)
• func LocateExecutable(bin string) (string, error)
• type Op
• type OpOption
  • func WithSearchDirs(paths ...string) OpOption

Variables

var (
	ErrLibraryEmpty    = errors.New("library name is empty")
	ErrLibraryNotFound = errors.New("library not found")
)

Functions

func CheckExecutable

func CheckExecutable(file string) error

func CheckFDLimitSupported

func CheckFDLimitSupported() bool

func CheckFileHandlesSupported

func CheckFileHandlesSupported() bool

Returns true if the file handles are supported.

func FindLibrary

func FindLibrary(name string, opts ...OpOption) (string, error)

func GetFileHandles

func GetFileHandles() (uint64, uint64, error)

Returns the number of allocated file handles and the number of allocated but unused file handles.

func GetLimit

func GetLimit() (uint64, error)

Returns the current file descriptor limit for the host, not for the current process. for the current process, use syscall.Getrlimit.

func GetUsage

func GetUsage() (uint64, error)

"process_open_fds" in prometheus collector ref. https://github.com/prometheus/client_golang/blob/main/prometheus/process_collector_other.go ref. https://pkg.go.dev/github.com/prometheus/procfs

func LocateExecutable

func LocateExecutable(bin string) (string, error)

Types

type Op

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

type OpOption

type OpOption func(*Op)

func WithSearchDirs

func WithSearchDirs(paths ...string) OpOption