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50 lines
1.7 KiB
50 lines
1.7 KiB
8 years ago
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// 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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