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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)]
#![allow(dead_code)]
use io::{mod, IoError, IoResult};
use prelude::*;
use sys::{last_error, retry};
use c_str::CString;
use num::Int;
use path::BytesContainer;
use collections;
pub mod backtrace;
pub mod condvar;
pub mod helper_thread;
pub mod mutex;
pub mod net;
pub mod rwlock;
pub mod stack;
pub mod thread;
pub mod thread_info;
pub mod thread_local;
// common error constructors
pub fn eof() -> IoError {
IoError {
kind: io::EndOfFile,
desc: "end of file",
detail: None,
}
}
pub fn timeout(desc: &'static str) -> IoError {
IoError {
kind: io::TimedOut,
desc: desc,
detail: None,
}
}
pub fn short_write(n: uint, desc: &'static str) -> IoError {
IoError {
kind: if n == 0 { io::TimedOut } else { io::ShortWrite(n) },
desc: desc,
detail: None,
}
}
pub fn unimpl() -> IoError {
IoError {
kind: io::IoUnavailable,
desc: "operations not yet supported",
detail: None,
}
}
// unix has nonzero values as errors
pub fn mkerr_libc<T: Int>(ret: T) -> IoResult<()> {
if ret != Int::zero() {
Err(last_error())
} else {
Ok(())
}
}
pub fn keep_going<F>(data: &[u8], mut f: F) -> i64 where
F: FnMut(*const u8, uint) -> i64,
{
let origamt = data.len();
let mut data = data.as_ptr();
let mut amt = origamt;
while amt > 0 {
let ret = retry(|| f(data, amt));
if ret == 0 {
break
} else if ret != -1 {
amt -= ret as uint;
data = unsafe { data.offset(ret as int) };
} else {
return ret;
}
}
return (origamt - amt) as i64;
}
// A trait for extracting representations from std::io types
pub trait AsInner<Inner> {
fn as_inner(&self) -> &Inner;
}
pub trait ProcessConfig<K: BytesContainer, V: BytesContainer> {
fn program(&self) -> &CString;
fn args(&self) -> &[CString];
fn env(&self) -> Option<&collections::HashMap<K, V>>;
fn cwd(&self) -> Option<&CString>;
fn uid(&self) -> Option<uint>;
fn gid(&self) -> Option<uint>;
fn detach(&self) -> bool;
}
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