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49 lines
1.7 KiB
49 lines
1.7 KiB
// Copyright 2013 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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use fmt; |
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use io::prelude::*; |
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use sync::atomic::{self, Ordering}; |
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use sys::stdio::Stderr; |
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pub fn min_stack() -> usize { |
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static MIN: atomic::AtomicUsize = atomic::AtomicUsize::new(0); |
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match MIN.load(Ordering::SeqCst) { |
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0 => {} |
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n => return n - 1, |
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} |
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// NOTE: We don't have env variable support on the 3DS so let's just use the |
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// default minimum |
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// let amt = env::var("RUST_MIN_STACK").ok().and_then(|s| s.parse().ok()); |
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// let amt = amt.unwrap_or(2 * 1024 * 1024); |
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let amt = 2 * 1024 * 1024; |
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// 0 is our sentinel value, so ensure that we'll never see 0 after |
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// initialization has run |
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MIN.store(amt + 1, Ordering::SeqCst); |
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amt |
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} |
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pub fn dumb_print(args: fmt::Arguments) { |
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let _ = Stderr::new().map(|mut stderr| stderr.write_fmt(args)); |
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} |
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// Other platforms should use the appropriate platform-specific mechanism for |
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// aborting the process. If no platform-specific mechanism is available, |
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// ::intrinsics::abort() may be used instead. The above implementations cover |
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// all targets currently supported by libstd. |
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pub fn abort(args: fmt::Arguments) -> ! { |
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dumb_print(format_args!("fatal runtime error: {}\n", args)); |
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unsafe { ::sys::abort_internal(); } |
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}
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