Struct libloading::Library
[−]
[src]
pub struct Library(_);
A dynamically loaded library.
Methods
impl Library
fn new<P: AsRef<OsStr>>(filename: P) -> Result<Library>
Find and load a shared library (module).
Locations where library is searched for is platform specific and can’t be adjusted portably.
Examples
// on Unix let lib = Library::new("libm.so.6").unwrap(); // on OS X let lib = Library::new("libm.dylib").unwrap(); // on Windows let lib = Library::new("msvcrt.dll").unwrap();
unsafe fn get<'lib, T>(&'lib self, symbol: &[u8]) -> Result<Symbol<'lib, T>>
Get a symbol by name.
Mangling or symbol rustification is not done: trying to get something like x::y
will not work.
You may append a null byte at the end of the byte string to avoid string allocation in some
cases. E.g. for symbol sin you may write b"sin\0" instead of b"sin".
Unsafety
Symbol of arbitrary requested type is returned. Using a symbol with wrong type is not memory safe.
Examples
Simple function:
let sin: Symbol<unsafe extern fn(f64) -> f64> = unsafe { lib.get(b"sin\0").unwrap() };
A static or TLS variable:
let errno: Symbol<*mut u32> = unsafe { lib.get(b"errno\0").unwrap() };