cextend

Documentation

Overview

本包提供C语言功能的go语言API。

本包使用了cgo,编译需要cgo,在使用时请考虑这对交叉编译的影响！

Index

• func Calloc(nitems uint, size uint) (ptr unsafe.Pointer)
• func Free(ptr unsafe.Pointer)
• func Malloc(size uint) (ptr unsafe.Pointer)
• func Memcpy(dest, src unsafe.Pointer, n uint)
• func Realloc(ptr unsafe.Pointer, size uint) (nptr unsafe.Pointer)

Examples

• Malloc

Functions

func Calloc

func Calloc(nitems uint, size uint) (ptr unsafe.Pointer)

C语言<stdlib.h>中提供的calloc函数的go语言API

func Free

func Free(ptr unsafe.Pointer)

C语言<stdlib.h>中提供的free函数的go语言API

func Malloc

func Malloc(size uint) (ptr unsafe.Pointer)

C语言<stdlib.h>中提供的malloc函数的go语言API

Example

//获得内存
ptr := Malloc(4)
//获取成败判断
if ptr != nil {
	//失败处理
	//......
}
//不用时释放获取的内存，避免内存泄露
defer Free(ptr)
//使用内存
//.......

func Memcpy

func Memcpy(dest, src unsafe.Pointer, n uint)

C语言<string.h>中提供的memcpy函数的go语言API

func Realloc

func Realloc(ptr unsafe.Pointer, size uint) (nptr unsafe.Pointer)

C语言<stdlib.h>中提供的realloc函数的go语言API