cgo properties

CGO not goBorrow a word from jwz Some people, when they face a problem, think "I know, I will use CGO". So now, they have two questions. I am very worried about the recent use of CGO on Gopher's Slack Channel, especially if there is an organization that intends to use a project to show Go, which is a bad idea. I have said many times about this, so m

This is a creation in Article, where the information may have evolved or changed. 1. Good links: http://tonybai.com/2012/09/26/interoperability-between-go-and-c/ Http://www.mischiefblog.com/2014/06/26/example-cgo-golang-app-that-calls-a-native-library-with-a-c-structure/ http://tonybai.com/2016/02/21/some-changes-in-go-1-6/ Http://blog.giorgis.io/cgo-examples http://tonybai.com/tag/

This is a creation in Article, where the information may have evolved or changed. The following is reproduced from: http://chaishushan.blog.163.com/blog/static/1301928972012799345127/ Author: chai2010 The go language currently has 2 compilers: GC and GCCGO. Where GC provides CGO support for the C language, and GCCGO support C + +. In addition, Swig provides support for the go language after 2.0.1, and supports C + + classes and callbacks. Go official

This is a creation in Article, where the information may have evolved or changed. CGO not go Borrow a word from jwz Some people, when they face a problem, think "I know, I will use CGO". So now, they have two questions. I am very worried about the recent use of CGO on Gopher's Slack Channel, especially if there is an organization that intends to use a p

This is a creation in Article, where the information may have evolved or changed. Cgo allows the Go program to invoke C code. CGO read into a special format to write the Go language source files, output go and C programs, so that the C program can be packaged into the go language package. For example. Here is a Go Language pack that contains two functions--random and Seed--are vests of the random and srand

This is a creation in Article, where the information may have evolved or changed. 1. It is simple to refer to the C code in go, introduce the standard C code with a comment before the import "C", and then use the pseudo-package of c.xxx to refer to the identifier of the C code space. It is important to note that import "C" is a pseudo package and cannot be defined as import (...) with other package pieces. 2. Reference C code in go must manually release the C code object. The release method is C

compiler GC and GCCGO. Official compilers support cross-platform compilation (but 不支持CGO ) Go can also 嵌入 C code, but can not embed C + + code, of course, you can call the C + + API in some way (such as Swig), this article mainly talk about CGO. How to embed C or call the dynamic library is simply skipped, the main note: You can use annotations // and /**/ surround C code There is no blank l

This is a creation in Article, where the information may have evolved or changed. Previously said Golang call C code can be through CGO or swig, and CGO is a 不能使用 C + + related things, such as the standard library or C + + object-oriented features. What to do, the C + + function function is encapsulated into the interface, and then compiled into a dynamic library, or the function is relatively simple can be

Golang about CGO documents less, so I absolutely write a simple case, here with Mysql to do the case, one is to call the inside of C function, one is completely with Golang to point to use the MySQL library function. My environment is a MAC, if the test, please ldflags corresponding to their environment to write. Attention to the place The Golang CGO reference must be a separate line, that is, must be wri

This is a creation in Article, where the information may have evolved or changed. Working on a requirement, you need to encapsulate the functionality of a C + + dynamic library as a web interface. Having no experience with C + + development, C had a bit of experience and considered two scenarios: Encapsulated as PHP extension Using CGO in Golang I can do both scenarios, but the final decision to adopt a 2nd scenario, the main consideratio

This is a creation in Article, where the information may have evolved or changed. In the early morning of February 18, 2016 in Beijing time, after go 1.5 released six months, go 1.6 officially release. The change to go 1.6 is small compared to go 1.5 's "big change" (mostly go), which is also related to go 1.6 's dev cycle being too short. But the go Community has paid much attention to the release, which is even more enthusiastic than go 1.5. At the initiative of Dave Cheney, Gophers held th

A problem was encountered during the development process.The client server is a 32-bit Windows system, and the software system must be compiled into a 32-bit system to operate properly on the client.My development environment:WIN7 Flagship edition 64-bitGolang 1.8 64-bittmd-gcc5.1 64-bitIn this case, use the batch file as follows:Set Goos=windowsset goarch=386set cgo_enabled=1go build PcmspauseThe system calls Go-sqlite3, using the CGO call, to report

This is a creation in Article, where the information may have evolved or changed. Go can also be like normal socket programming: create socket-------listen ... Of course, there are net packages available in go, but if you want to implement some of the lower-level operations, such as building your own packets, you can do this in a more primitive way for socket programming. The code is as follows: Package Mainimport (. "FMT" "StrConv" "Strings" "Syscall") func Makeword (Low, high uint8) UInt32 {

This is a creation in Article, where the information may have evolved or changed. File Test.h as follows #ifndef _test_h#define _test_h#ifdef __cplusplusextern "C" {#endifextern void MyTest (); #ifdef __cplusplus} #endif #endif File test.cc as follows #include "_cgo_export.h" extern "C" {void MyTest () {test ();}} File Test.go as follows Package test/* #include "test.h" */import "C" import () func test () {c.mytest ()}//export testfunc Test () {println ("Hello")} If you do go build-x you wi

This is a creation in Article, where the information may have evolved or changed. Reprinted from Dada's blog I used CGO to optimize the data storage method of the game memory database, and reduce the number of objects. However, the program placed in the online environment after a paragraph error, directly leading to the process exit, had to temporarily removed the optimization of the part, removed after the program continued to run stably for two wee

This is a creation in Article, where the information may have evolved or changed. I used CGO to optimize the data storage method of the game memory database, and reduce the number of objects. However, the program placed in the online environment after a paragraph error, directly leading to the process exit, had to temporarily removed the optimization of the part, removed after the program continued to run stably for two weeks. After the optimization c

This is a creation in Article, where the information may have evolved or changed. Go using C's library is very simple, through the CGO this tool basically can be said to be seamless integration. Here's a demonstration of the process of encapsulating the API under Windows with CGO. Note, please update go to the latest weekly version. First, in $GOPATH\SRC (if you don't know what $gopath is, please step here

This is a creation in Article, where the information may have evolved or changed. Golang about CGO documents relatively few, so I definitely write a simple case, here with MySQL to do case, one is to call C inside the function, one is completely with the Golang to point with the Mysql library function. My environment is the MAC, if the test, please LDFLAGS correspond to their own environment to write. Note the place Golang's

This is a creation in Article, where the information may have evolved or changed. Previously said Golang call C code can be through CGO or swig, and CGO is a 不能使用 C + + related things, such as the standard library or C + + object-oriented features. What to do, the C + + function function is encapsulated into the interface, and then compiled into a dynamic library, or the function is relatively simple can be

This is a creation in Article, where the information may have evolved or changed. Previously said Golang call C code can be through CGO or swig, and CGO is a 不能使用 C + + related things, such as the standard library or C + + object-oriented features. What to do, the C + + function function is encapsulated into the interface, and then compiled into a dynamic library, or the function is relatively simple can be