Struct libloading::os::unix::Library

pub struct Library { /* fields omitted */ }

A platform-specific equivalent of the cross-platform Library.

Methods

impl Library

pub 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.

Corresponds to dlopen(filename, RTLD_NOW).

pub fn this() -> Library

Load the dynamic libraries linked into main program.

This allows retrieving symbols from any dynamic library linked into the program, without specifying the exact library.

Corresponds to dlopen(NULL, RTLD_NOW).

pub fn open<P>(filename: Option<P>, flags: c_int) -> Result<Library> where
    P: AsRef<OsStr>, 

Find and load a shared library (module).

Locations where library is searched for is platform specific and can’t be adjusted portably.

If the filename is None, null pointer is passed to dlopen.

Corresponds to dlopen(filename, flags).

pub unsafe fn get<T>(&self, symbol: &[u8]) -> Result<Symbol<T>>

Get a pointer to function or static variable by symbol name.

The symbol may not contain any null bytes, with an exception of last byte. A null terminated symbol may avoid a string allocation in some cases.

Symbol is interpreted as-is; no mangling is done. This means that symbols like x::y are most likely invalid.

Unsafety

Pointer to a value of arbitrary type is returned. Using a value with wrong type is undefined.

Platform-specific behaviour

OS X uses some sort of lazy initialization scheme, which makes loading TLS variables impossible. Using a TLS variable loaded this way on OS X is undefined behaviour.

pub fn into_raw(self) -> *mut c_void

Convert the Library to a raw handle.

The handle returned by this function shall be usable with APIs which accept handles as returned by dlopen.

pub unsafe fn from_raw(handle: *mut c_void) -> Library

Convert a raw handle returned by dlopen-family of calls to a Library.

Unsafety

The pointer shall be a result of a successful call of the dlopen-family of functions or a pointer previously returned by Library::into_raw call. It must be valid to call dlclose with this pointer as an argument.

Trait Implementations

impl Drop for Library

fn drop(&mut self)

Executes the destructor for this type.

impl Sync for Library

impl From<Library> for Library

fn from(lib: Library) -> Library

Performs the conversion.

impl From<Library> for Library

fn from(lib: Library) -> Library

Performs the conversion.

impl Send for Library

impl Debug for Library

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.