1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
13 //! The `rt` module provides a narrow set of runtime services,
14 //! including the global heap (exported in `heap`) and unwinding and
15 //! backtrace support. The APIs in this module are highly unstable,
16 //! and should be considered as private implementation details for the
19 #![unstable(feature = "rt",
20 reason
= "this public module should not exist and is highly likely \
27 // Reexport some of our utilities which are expected by other crates.
28 pub use sys_common
::unwind
::{begin_unwind, begin_unwind_fmt}
;
30 // Rust runtime's startup objects depend on these symbols, so they must be public.
31 // Since sys_common isn't public, we have to re-export them here.
32 #[cfg(all(target_os="windows", target_arch = "x86", target_env="gnu"))]
33 pub use sys_common
::unwind
::imp
::eh_frame_registry
::*;
37 fn lang_start(main
: *const u8, argc
: isize, argv
: *const *const u8) -> isize {
43 use sys_common
::thread_info
::{self, NewThread}
;
49 let main_guard
= sys
::thread
::guard
::init();
50 sys
::stack_overflow
::init();
52 // Next, set up the current Thread with the guard information we just
53 // created. Note that this isn't necessary in general for new threads,
54 // but we just do this to name the main thread and to give it correct
55 // info about the stack bounds.
56 let thread
: Thread
= NewThread
::new(Some("<main>".to_owned()));
57 thread_info
::set(main_guard
, thread
);
59 // Store our args if necessary in a squirreled away location
60 sys_common
::args
::init(argc
, argv
);
62 // Let's run some code!
63 let res
= panic
::catch_unwind(mem
::transmute
::<_
, fn()>(main
));
64 sys_common
::cleanup();