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 \
28 use sys_common::thread_info::{self, NewThread};
30 use thread::{self, Thread};
32 // Reexport some of our utilities which are expected by other crates.
33 pub use sys_common::unwind::{begin_unwind, begin_unwind_fmt};
35 // Rust runtime's startup objects depend on these symbols, so they must be public.
36 // Since sys_common isn't public, we have to re-export them here.
37 #[cfg(all(target_os="windows", target_arch = "x86", target_env="gnu"))]
38 pub use sys_common::unwind::imp::eh_frame_registry::*;
42 fn lang_start(main: *const u8, argc: isize, argv: *const *const u8) -> isize {
46 let main_guard = sys::thread::guard::init();
47 sys::stack_overflow::init();
49 // Next, set up the current Thread with the guard information we just
50 // created. Note that this isn't necessary in general for new threads,
51 // but we just do this to name the main thread and to give it correct
52 // info about the stack bounds.
53 let thread: Thread = NewThread::new(Some("<main>".to_owned()));
54 thread_info::set(main_guard, thread);
56 // Store our args if necessary in a squirreled away location
57 sys_common::args::init(argc, argv);
59 // Let's run some code!
60 let res = thread::catch_panic(mem::transmute::<_, fn()>(main));
61 sys_common::cleanup();