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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use libc::{self, LONG};
use sys_common::util::report_overflow;
use sys::c;
pub struct Handler;
impl Handler {
pub unsafe fn new() -> Handler {
// This API isn't available on XP, so don't panic in that case and just
// pray it works out ok.
if c::SetThreadStackGuarantee(&mut 0x5000) == 0 {
if libc::GetLastError() as u32 != libc::ERROR_CALL_NOT_IMPLEMENTED as u32 {
panic!("failed to reserve stack space for exception handling");
}
}
Handler
}
}
extern "system" fn vectored_handler(ExceptionInfo: *mut c::EXCEPTION_POINTERS)
-> LONG {
unsafe {
let rec = &(*(*ExceptionInfo).ExceptionRecord);
let code = rec.ExceptionCode;
if code == c::EXCEPTION_STACK_OVERFLOW {
report_overflow();
}
c::EXCEPTION_CONTINUE_SEARCH
}
}
pub unsafe fn init() {
if c::AddVectoredExceptionHandler(0, vectored_handler).is_null() {
panic!("failed to install exception handler");
}
// Set the thread stack guarantee for the main thread.
let _h = Handler::new();
}
pub unsafe fn cleanup() {}
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