Attribute Macro dtor

#[dtor]

Marks a function as a library/executable destructor. This uses OS-specific linker sections to call a specific function at termination time.

Multiple shutdown functions are supported, but the invocation order is not guaranteed.

Attribute parameters

• crate_path = ::path::to::dtor::crate: The path to the dtor crate containing the support macros. If you re-export dtor items as part of your crate, you can use this to redirect the macro’s output to the correct crate.
• used(linker): (Advanced) Mark the function as being used in the link phase.
• link_section = "section": The section to place the dtor’s code in.
• anonymous: Do not give the destructor a name in the generated code (allows for multiple destructors with the same name).

#[dtor]
fn shutdown() {
  /* ... */
}