78 lines
2.1 KiB
Rust
78 lines
2.1 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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//! Simple backtrace functionality (to print on panic)
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#![allow(non_camel_case_types)]
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use prelude::*;
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use os;
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use sync::atomic;
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pub use sys::backtrace::write;
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// For now logging is turned off by default, and this function checks to see
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// whether the magical environment variable is present to see if it's turned on.
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pub fn log_enabled() -> bool {
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static ENABLED: atomic::AtomicInt = atomic::INIT_ATOMIC_INT;
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match ENABLED.load(atomic::SeqCst) {
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1 => return false,
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2 => return true,
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_ => {}
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}
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let val = match os::getenv("RUST_BACKTRACE") {
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Some(..) => 2,
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None => 1,
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};
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ENABLED.store(val, atomic::SeqCst);
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val == 2
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}
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#[cfg(test)]
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mod test {
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use prelude::*;
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use sys_common;
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macro_rules! t { ($a:expr, $b:expr) => ({
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let mut m = Vec::new();
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sys_common::backtrace::demangle(&mut m, $a).unwrap();
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assert_eq!(String::from_utf8(m).unwrap(), $b);
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}) }
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#[test]
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fn demangle() {
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t!("test", "test");
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t!("_ZN4testE", "test");
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t!("_ZN4test", "_ZN4test");
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t!("_ZN4test1a2bcE", "test::a::bc");
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}
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#[test]
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fn demangle_dollars() {
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t!("_ZN4$UP$E", "Box");
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t!("_ZN8$UP$testE", "Boxtest");
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t!("_ZN8$UP$test4foobE", "Boxtest::foob");
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t!("_ZN10$u{20}test4foobE", " test::foob");
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}
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#[test]
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fn demangle_many_dollars() {
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t!("_ZN14test$u{20}test4foobE", "test test::foob");
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t!("_ZN12test$UP$test4foobE", "testBoxtest::foob");
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}
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#[test]
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fn demangle_windows() {
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t!("ZN4testE", "test");
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t!("ZN14test$u{20}test4foobE", "test test::foob");
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t!("ZN12test$UP$test4foobE", "testBoxtest::foob");
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}
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}
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