njs_ioutils

Documentation

Index

• func SystemFileDescriptor(newValue int) (current int, max int, err error)
• type IOWrapper
  • func NewIOWrapper(ioInput interface{}) *IOWrapper
  • func (I IOWrapper) Close() error
  • func (I IOWrapper) Read(p []byte) (n int, err error)
  • func (I IOWrapper) Seek(offset int64, whence int) (int64, error)
  • func (I *IOWrapper) SetWrapper(read func(p []byte) []byte, write func(p []byte) []byte)
  • func (I IOWrapper) Write(p []byte) (n int, err error)

Functions

func SystemFileDescriptor

func SystemFileDescriptor(newValue int) (current int, max int, err error)

*

• SystemFileDescriptor is returning current Limit & max system limit for file descriptor (open file or I/O resource) currently set in the system
• This function return the current setting (current number of file descriptor and the max value) if the newValue given is zero
• Otherwise if the newValue is more than the current system limit, try to change the current limit in the system for this process only *
• For Windows build, please follow this note :
• 1) install package gcc-multilib gcc-mingw-w64 to build C source with GCC
• you will having this binaries
• - i686-w64-mingw32* for 32-bit Windows;
• - x86_64-w64-mingw32* for 64-bit Windows.
• locate you binaries gcc mingw path and note it:
• - win32 : updatedb && locate i686-w64-mingw32-gcc
• - win64 : updatedb && locate x86_64-w64-mingw32-gcc
• 2) if you have an error in the build, or if the .o object file is not present in golib/njg-ioutils/maxstdio/, run this step
• - go to golib/njg-ioutils/maxstdio folder
• - gcc -c maxstdio.c
• 3) for Win32 use this env var in prefix of your go build command (recommend to use -a flag) :
• CC=/usr/bin/i686-w64-mingw32-gcc CGO_ENABLED=1 GOOS=windows GOARCH=amd64 go build -a -v ...
• 4) for win64 use this env var in prefix of your go build command (recommend to use -a flag) :
• CC=/usr/bin/x86_64-w64-mingw32-gcc CGO_ENABLED=1 GOOS=windows GOARCH=amd64 go build -a -v ... *
• Normally no problem will be result in the build *

Types

type IOWrapper

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

func NewIOWrapper

func NewIOWrapper(ioInput interface{}) *IOWrapper

func (IOWrapper) Close

func (I IOWrapper) Close() error

func (IOWrapper) Read

func (I IOWrapper) Read(p []byte) (n int, err error)

func (IOWrapper) Seek

func (I IOWrapper) Seek(offset int64, whence int) (int64, error)

func (*IOWrapper) SetWrapper

func (I *IOWrapper) SetWrapper(read func(p []byte) []byte, write func(p []byte) []byte)

func (IOWrapper) Write

func (I IOWrapper) Write(p []byte) (n int, err error)