Home Backend Development Golang Golang framework extension interoperates with native code

Golang framework extension interoperates with native code

Jun 05, 2024 pm 02:23 PM
golang frame

The Go framework can interact with native code through CGO and SWIG: CGO allows direct calls to C functions, generating conversion wrappers between Go parameters and C types. SWIG generates wrapper code that interfaces C/C++ code with Go code, providing high-level abstraction and customization.

Golang framework extension interoperates with native code

Go framework extensions interoperate with native code

In Go applications, we often need to interact with native code, For example, calling a C library or using system calls. Go provides two main mechanisms to achieve this: CGO and SWIG.

CGO

CGO allows calling C functions directly from Go code. It works by using the compiler to generate a wrapper that converts Go parameters to C types and calls C code.

import "C"

func main() {
    C.puts(C.CString("Hello from Go!"))
}
Copy after login

SWIG

SWIG (Simplified Wrapper and Interface Generator) is a tool that generates wrapper code that automatically interfaces C/C++ code with Go code. SWIG provides a higher level of abstraction and customization than CGO, but it requires additional setup.

swig -go -c++ mymodule.i
go build -ldflags=-extldflags="-static"
Copy after login

Practical case

Use CGO to call the C library to parse JSON

Suppose we have a file named The C library of libjson, which provides the function of parsing JSON strings. We can use CGO to call this library:

package main

/*
#cgo LDFLAGS: -ljson
#include <stdio.h>
#include <stdlib.h>
void parse_json(const char* json_string);
*/
import "C"

func main() {
    input := "{"foo":"bar"}"
    C.parse_json(C.CString(input))
}
Copy after login

Use SWIG to call C++ classes

Suppose we have a C++ class named MyClass, which Has member functions that perform calculations. We can use SWIG to generate wrapper code:

// MyClass.h
class MyClass {
public:
    int compute(int a, int b);
};
Copy after login
modules MyModule {
    interface MyClass {
        function compute(a, b);
    };
};
Copy after login

Then we can call MyClass with Go code:

package main

// #cgo CFLAGS: -I../cpp
// #cgo LDFLAGS: -L../cpp -lMyModule
// #include "MyModule_wrap.h"
import "C"

func main() {
    obj := MyClass_new()
    defer MyClass_delete(obj)
    result := int(C.MyClass_compute(obj, 10, 20))
    println(result)
}
Copy after login

By using CGO or SWIG, we can easily convert native The code integrates with Go applications, extending the functionality of the framework and interacting with the underlying system.

The above is the detailed content of Golang framework extension interoperates with native code. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot Article Tags

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How to configure connection pool for Golang database connection? How to configure connection pool for Golang database connection? Jun 06, 2024 am 11:21 AM

How to configure connection pool for Golang database connection?

How to safely read and write files using Golang? How to safely read and write files using Golang? Jun 06, 2024 pm 05:14 PM

How to safely read and write files using Golang?

How do the lightweight options of PHP frameworks affect application performance? How do the lightweight options of PHP frameworks affect application performance? Jun 06, 2024 am 10:53 AM

How do the lightweight options of PHP frameworks affect application performance?

Comparison of advantages and disadvantages of golang framework Comparison of advantages and disadvantages of golang framework Jun 05, 2024 pm 09:32 PM

Comparison of advantages and disadvantages of golang framework

How does the learning curve of PHP frameworks compare to other language frameworks? How does the learning curve of PHP frameworks compare to other language frameworks? Jun 06, 2024 pm 12:41 PM

How does the learning curve of PHP frameworks compare to other language frameworks?

What are the best practices for error handling in Golang framework? What are the best practices for error handling in Golang framework? Jun 05, 2024 pm 10:39 PM

What are the best practices for error handling in Golang framework?

How to save JSON data to database in Golang? How to save JSON data to database in Golang? Jun 06, 2024 am 11:24 AM

How to save JSON data to database in Golang?

Golang framework vs. Go framework: Comparison of internal architecture and external features Golang framework vs. Go framework: Comparison of internal architecture and external features Jun 06, 2024 pm 12:37 PM

Golang framework vs. Go framework: Comparison of internal architecture and external features

See all articles