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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.
#![allow(missing_docs, bad_style)]
use io::{self, ErrorKind};
use libc;
pub mod condvar;
pub mod ext;
pub mod fast_thread_local;
pub mod fd;
pub mod fs;
pub mod stdio;
pub mod memchr;
pub mod mutex;
pub mod os;
pub mod os_str;
pub mod path;
pub mod rwlock;
pub mod thread;
pub mod rand;
pub mod thread_local;
pub mod time;
#[cfg(not(test))]
pub fn init() {
use alloc::oom;
// By default, some platforms will send a *signal* when an EPIPE error
// would otherwise be delivered. This runtime doesn't install a SIGPIPE
// handler, causing it to kill the program, which isn't exactly what we
// want!
//
// Hence, we set SIGPIPE to ignore when the program starts up in order
// to prevent this problem.
unsafe {
reset_sigpipe();
}
oom::set_oom_handler(oom_handler);
// A nicer handler for out-of-memory situations than the default one. This
// one prints a message to stderr before aborting. It is critical that this
// code does not allocate any memory since we are in an OOM situation. Any
// errors are ignored while printing since there's nothing we can do about
// them and we are about to exit anyways.
fn oom_handler() -> ! {
use intrinsics;
let msg = "fatal runtime error: out of memory\n";
unsafe {
libc::write(libc::STDERR_FILENO,
msg.as_ptr() as *const libc::c_void,
msg.len());
intrinsics::abort();
}
}
// I don't think we have signal handling on the 3DS, so let's leave this
// blank for now
unsafe fn reset_sigpipe() {}
}
pub fn decode_error_kind(errno: i32) -> ErrorKind {
match errno as libc::c_int {
libc::ECONNREFUSED => ErrorKind::ConnectionRefused,
libc::ECONNRESET => ErrorKind::ConnectionReset,
libc::EPERM | libc::EACCES => ErrorKind::PermissionDenied,
libc::EPIPE => ErrorKind::BrokenPipe,
libc::ENOTCONN => ErrorKind::NotConnected,
libc::ECONNABORTED => ErrorKind::ConnectionAborted,
libc::EADDRNOTAVAIL => ErrorKind::AddrNotAvailable,
libc::EADDRINUSE => ErrorKind::AddrInUse,
libc::ENOENT => ErrorKind::NotFound,
libc::EINTR => ErrorKind::Interrupted,
libc::EINVAL => ErrorKind::InvalidInput,
libc::ETIMEDOUT => ErrorKind::TimedOut,
libc::EEXIST => ErrorKind::AlreadyExists,
// These two constants can have the same value on some systems,
// but different values on others, so we can't use a match
// clause
x if x == libc::EAGAIN || x == libc::EWOULDBLOCK =>
ErrorKind::WouldBlock,
_ => ErrorKind::Other,
}
}
#[doc(hidden)]
pub trait IsMinusOne {
fn is_minus_one(&self) -> bool;
}
macro_rules! impl_is_minus_one {
($($t:ident)*) => ($(impl IsMinusOne for $t {
fn is_minus_one(&self) -> bool {
*self == -1
}
})*)
}
impl_is_minus_one! { i8 i16 i32 i64 isize }
pub fn cvt<T: IsMinusOne>(t: T) -> io::Result<T> {
if t.is_minus_one() {
Err(io::Error::last_os_error())
} else {
Ok(t)
}
}
pub fn cvt_r<T, F>(mut f: F) -> io::Result<T>
where T: IsMinusOne,
F: FnMut() -> T
{
loop {
match cvt(f()) {
Err(ref e) if e.kind() == ErrorKind::Interrupted => {}
other => return other,
}
}
}
pub unsafe fn abort_internal() -> ! {
::libc::abort()
}
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