]>
Commit | Line | Data |
---|---|---|
1a4d82fc JJ |
1 | // Copyright 2014 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. | |
4 | // | |
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. | |
10 | ||
7453a54e SL |
11 | #![cfg_attr(test, allow(dead_code))] |
12 | ||
e9174d1e | 13 | use sys_common::util::report_overflow; |
c1a9b12d | 14 | use sys::c; |
1a4d82fc | 15 | |
e9174d1e | 16 | pub struct Handler; |
1a4d82fc JJ |
17 | |
18 | impl Handler { | |
19 | pub unsafe fn new() -> Handler { | |
e9174d1e SL |
20 | // This API isn't available on XP, so don't panic in that case and just |
21 | // pray it works out ok. | |
22 | if c::SetThreadStackGuarantee(&mut 0x5000) == 0 { | |
92a42be0 | 23 | if c::GetLastError() as u32 != c::ERROR_CALL_NOT_IMPLEMENTED as u32 { |
e9174d1e SL |
24 | panic!("failed to reserve stack space for exception handling"); |
25 | } | |
26 | } | |
27 | Handler | |
1a4d82fc JJ |
28 | } |
29 | } | |
30 | ||
e9174d1e | 31 | extern "system" fn vectored_handler(ExceptionInfo: *mut c::EXCEPTION_POINTERS) |
92a42be0 | 32 | -> c::LONG { |
1a4d82fc JJ |
33 | unsafe { |
34 | let rec = &(*(*ExceptionInfo).ExceptionRecord); | |
35 | let code = rec.ExceptionCode; | |
36 | ||
e9174d1e SL |
37 | if code == c::EXCEPTION_STACK_OVERFLOW { |
38 | report_overflow(); | |
1a4d82fc | 39 | } |
e9174d1e | 40 | c::EXCEPTION_CONTINUE_SEARCH |
1a4d82fc JJ |
41 | } |
42 | } | |
43 | ||
44 | pub unsafe fn init() { | |
e9174d1e | 45 | if c::AddVectoredExceptionHandler(0, vectored_handler).is_null() { |
1a4d82fc JJ |
46 | panic!("failed to install exception handler"); |
47 | } | |
e9174d1e SL |
48 | // Set the thread stack guarantee for the main thread. |
49 | let _h = Handler::new(); | |
1a4d82fc JJ |
50 | } |
51 | ||
e9174d1e | 52 | pub unsafe fn cleanup() {} |