https://github.com/shimogawa/monkeyc

Monkey patching for C/C++ in a single header
https://github.com/shimogawa/monkeyc

Last synced: 1 day ago
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Monkey patching for C/C++ in a single header

• Host: GitHub
• URL: https://github.com/shimogawa/monkeyc
• Owner: Shimogawa
• Created: 2024-06-11T02:59:48.000Z (5 months ago)
• Default Branch: master
• Last Pushed: 2024-06-13T04:40:19.000Z (5 months ago)
• Last Synced: 2024-06-13T10:49:12.996Z (5 months ago)
• Language: C++
• Homepage:
• Size: 31.3 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Monkey patching in C and C++

![example workflow](https://github.com/Shimogawa/monkeyc/actions/workflows/cmake.yml/badge.svg)

A single-header library that provides monkey patching in C and C++.

**THIS HEADER SHOULD ONLY BE USED FOR TESTING PURPOSES.**

## Usage

### C

```c

#include "monkey.h"

#include 

__attribute__((noinline)) int plus1(int i) {

    return i + 1;

}

__attribute__((noinline)) int plus2(int i) {

    return i + 2;

}

int main(void) {

    printf("%d\n", plus1(3));  // 4

    monkeyc_patched p = monkeyc_patch(plus1, plus2);

    printf("%d\n", plus1(3));  // 5

    monkeyc_unpatch(&p);

    printf("%d\n", plus1(3));  // 4

    return 0;

}

```

### C++

```c++

#include "monkey.h"

#include 

__attribute__((noinline)) int plus1(int i) {

    return i + 1;

}

int main(void) {

    std::cout << plus1(1) << std::endl;

    {

        auto g = monkeyc::patch(plus1, [](int i) { return i + 2; });

        std::cout << plus1(1) << std::endl;

    }

    std::cout << plus1(1) << std::endl;

    return 0;

}

```

## References

- https://github.com/mehcode/guerrilla

- https://github.com/bouk/monkey