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https://github.com/pswgameworkid/dynafen
C++11 template-based dynamic library function loader
https://github.com/pswgameworkid/dynafen
cpp-template cpp11 dynamic-library function-loader
Last synced: about 1 month ago
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C++11 template-based dynamic library function loader
- Host: GitHub
- URL: https://github.com/pswgameworkid/dynafen
- Owner: PSWGameWorkID
- License: mit
- Created: 2024-07-14T08:06:33.000Z (4 months ago)
- Default Branch: main
- Last Pushed: 2024-07-14T09:00:09.000Z (4 months ago)
- Last Synced: 2024-10-12T16:41:02.796Z (about 1 month ago)
- Topics: cpp-template, cpp11, dynamic-library, function-loader
- Language: C++
- Homepage:
- Size: 14.6 KB
- Stars: 0
- Watchers: 0
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.MD
- License: LICENSE
Awesome Lists containing this project
README
# Dynafen
C++11 template-based dynamic library function loader.
Originally made for a personal experimentation and coding practice.
> [!WARNING]
> So far only supports dynamic library that is compiled from C code or
> C++ code that is using `extern "C"`, as only code demangling that is
> available during runtime, but not code mangling.
## Features
- Cross-platform
- Library handle is reference counted
> Meaning a loaded library will be unloaded if no function in it is no longer needed.
- Simple function construction.
- Simple pointer validity check
- Call imported function like a normal C++ function
- Good for IDE autocompletion support
## Building and Installation
### Requirements
- CMake 3.10 or later
- C++ Compiler with C++11 variadic template support
- LLVM clang 2.9 or later
- GNU gcc 4.4 or later
- MSVC 18.0 (Visual Studio 2013) or later
- Build system like Ninja, GNU Make or MSBuild
### Steps
```bash
# Clone the repository
git clone https://github.com/PSWGameWorkID/dynafen
cd dynafen
# Build the project ( You can change Ninja to other build system too )
mkdir build
cd build
cmake -B . -S .. -G Ninja -DCMAKE_BUILD_TYPE=MinSizeRel
ninja
# Install as system library ( Linux only )
sudo cmake --install .
```
### Prebuilt
The Release page only have package for x86-64 Linux build with GCC and Clang.
## Exported Functions
### `#include `
- `vdynafen::vdynafen(const char* libPath, const char* symName)`
Construct and load an exported function with void return type named `symName` from dynamic library at `libPath`
- `void vdynafen::operator(Args ...)`
Call the exported function
- `rdynafen::rdynafen(const char* libPath, const char* symName)`
Construct and load an exported function with `R` return type named `symName` from dynamic library at `libPath`
- `R vdynafen::operator(Args ...)`
Call the exported function
- `bool dynafen_base::valid()`
Check if the pointer is valid, calling invalid pointer may cause undefined behaviour, but mostly crash your app.
This call is available for both function classes since `dynafen_base` is it's base class.
## Adding to your Program
```bash
# Using installed library
gcc -o yourprogram -ldynafen "main.cpp"
# Using built library, but not installed
gcc -o yourprogram -I/path/to/lib/dynafen/ -L/path/to/lib/dynafen/build -ldynafen "main.cpp"
```
## Example
```cpp
#include
...
const char* const library1 = "./lib/libmy.1.so";
const char* const mathlib = "./syslib/libmymath.so";
vdynafen<> my_void_function(library1, "my_void_function"); // equals to `void my_void_function(void)`
vdynafen my_void_int_function(library1, "my_void_int_function"); // equals to `void my_void_int_function(int arg1)`
rdynafen my_multiply(mathlib, "my_multiply"); // equals to `int my_multiply(int, int)`
rdynafen my_getter(library1, "my_getter"); // equals to `int my_getter(void)`
...
// Call like a C++ function
my_void_function();
my_void_int_function(100);
int s = my_multiply(10, 10);
int data = my_getter();
// Check if this function valid
if(my_getter.valid())
{
int val = my_getter();
}
```
## Dependencies
Only C++11 Standard Library and platform-specific dynamic loader.
## See Also
- [martin-olivier/dylib](https://github.com/martin-olivier/dylib) project
More featured, more OOP-based approach, overall a better library.
## License
MIT License ( See [LICENSE](LICENSE) )