| // 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; |
| |
| #[cfg(target_os = "android")] pub use os::android as platform; |
| #[cfg(target_os = "bitrig")] pub use os::bitrig as platform; |
| #[cfg(target_os = "dragonfly")] pub use os::dragonfly as platform; |
| #[cfg(target_os = "freebsd")] pub use os::freebsd as platform; |
| #[cfg(target_os = "ios")] pub use os::ios as platform; |
| #[cfg(target_os = "linux")] pub use os::linux as platform; |
| #[cfg(target_os = "macos")] pub use os::macos as platform; |
| #[cfg(target_os = "nacl")] pub use os::nacl as platform; |
| #[cfg(target_os = "netbsd")] pub use os::netbsd as platform; |
| #[cfg(target_os = "openbsd")] pub use os::openbsd as platform; |
| #[cfg(target_os = "solaris")] pub use os::solaris as platform; |
| #[cfg(target_os = "emscripten")] pub use os::emscripten as platform; |
| |
| #[macro_use] |
| pub mod weak; |
| |
| pub mod android; |
| pub mod backtrace; |
| pub mod condvar; |
| pub mod ext; |
| pub mod fd; |
| pub mod fs; |
| pub mod mutex; |
| pub mod net; |
| pub mod os; |
| pub mod os_str; |
| pub mod pipe; |
| pub mod process; |
| pub mod rand; |
| pub mod rwlock; |
| pub mod stack_overflow; |
| pub mod thread; |
| pub mod thread_local; |
| pub mod time; |
| pub mod stdio; |
| |
| #[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() as libc::size_t); |
| intrinsics::abort(); |
| } |
| } |
| |
| #[cfg(not(target_os = "nacl"))] |
| unsafe fn reset_sigpipe() { |
| assert!(signal(libc::SIGPIPE, libc::SIG_IGN) != !0); |
| } |
| #[cfg(target_os = "nacl")] |
| unsafe fn reset_sigpipe() {} |
| } |
| |
| #[cfg(target_os = "android")] |
| pub use sys::android::signal; |
| #[cfg(not(target_os = "android"))] |
| pub use libc::signal; |
| |
| 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, |
| } |
| } |
| } |