Struct Symbol 

pub struct Symbol<'a, T> { /* private fields */ }

Available on crate feature module only.

This represents a symbol from a Library.

Implementations

impl<'a, T> Symbol<'a, T>

pub unsafe fn from_raw(val: *const c_void) -> Self

Creates a new Symbol from a raw pointer.

Arguments

• val: the raw pointer.

returns: Symbol

Safety

This is UB if val does not match the signature of T.

pub fn as_ptr(&self) -> *const T

Returns the raw pointer of this symbol.

pub unsafe fn as_static(&self) -> Symbol<'static, T>

Creates a static reference to a symbol.

Safety

This function assumes that the matching Library this symbol originates from will never ever be dropped/unloaded before using the produced static symbol. If the returned symbol is used after dropping the matching Library this symbol originated from, this is UB.

This is best ensured using a ModuleLoader rather than messing with Library manually.

impl<'a, R> Symbol<'a, fn() -> R>

pub fn call(&self) -> R

Calls this symbol if this symbol is a function.

returns: R

impl<'a, T, R> Symbol<'a, fn(T) -> R>

pub fn call(&self, val: T) -> R

Calls this symbol if this symbol is a function.

Arguments

• val: argument #1.

returns: R

impl<'a, T, R> Symbol<'a, extern "C" fn(T) -> R>

pub fn call(&self, val: T) -> R

Calls this symbol if this symbol is a function.

Arguments

• val: argument #1.

returns: R

impl<'a, T, T1, R> Symbol<'a, extern "C" fn(T, T1) -> R>

pub fn call(&self, val: T, val1: T1) -> R

Calls this symbol if this symbol is a function.

Arguments

• val: argument #1.

returns: R

impl<'a, T, T1, T2, R> Symbol<'a, extern "C" fn(T, T1, T2) -> R>

pub fn call(&self, val: T, val1: T1, val2: T2) -> R

Calls this symbol if this symbol is a function.

Arguments

• val: argument #1.

returns: R

impl<'a, R> Symbol<'a, extern "C" fn() -> R>

pub fn call(&self) -> R

Calls this symbol if this symbol is a function.

returns: R