Update for latest nightly 2018-06-09 (#70)

* Update for latest nightly 2018-06-09
* We now have a proper horizon os and sys modules in libstd

1 files changed, 273 insertions, 0 deletions

diff --git a/ctr-std/src/sys/windows/mod.rs b/ctr-std/src/sys/windows/mod.rs
new file mode 100644
index 0000000..0d12ecf
--- /dev/null
+++ b/ctr-std/src/sys/windows/mod.rs
@@ -0,0 +1,273 @@
+// 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 ptr;
+use ffi::{OsStr, OsString};
+use io::{self, ErrorKind};
+use os::windows::ffi::{OsStrExt, OsStringExt};
+use path::PathBuf;
+use time::Duration;
+
+pub use libc::strlen;
+pub use self::rand::hashmap_random_keys;
+
+#[macro_use] pub mod compat;
+
+pub mod args;
+#[cfg(feature = "backtrace")]
+pub mod backtrace;
+pub mod c;
+pub mod cmath;
+pub mod condvar;
+#[cfg(feature = "backtrace")]
+pub mod dynamic_lib;
+pub mod env;
+pub mod ext;
+pub mod fast_thread_local;
+pub mod fs;
+pub mod handle;
+pub mod memchr;
+pub mod mutex;
+pub mod net;
+pub mod os;
+pub mod os_str;
+pub mod path;
+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() {
+}
+
+pub fn decode_error_kind(errno: i32) -> ErrorKind {
+    match errno as c::DWORD {
+        c::ERROR_ACCESS_DENIED => return ErrorKind::PermissionDenied,
+        c::ERROR_ALREADY_EXISTS => return ErrorKind::AlreadyExists,
+        c::ERROR_FILE_EXISTS => return ErrorKind::AlreadyExists,
+        c::ERROR_BROKEN_PIPE => return ErrorKind::BrokenPipe,
+        c::ERROR_FILE_NOT_FOUND => return ErrorKind::NotFound,
+        c::ERROR_PATH_NOT_FOUND => return ErrorKind::NotFound,
+        c::ERROR_NO_DATA => return ErrorKind::BrokenPipe,
+        c::ERROR_OPERATION_ABORTED => return ErrorKind::TimedOut,
+        _ => {}
+    }
+
+    match errno {
+        c::WSAEACCES => ErrorKind::PermissionDenied,
+        c::WSAEADDRINUSE => ErrorKind::AddrInUse,
+        c::WSAEADDRNOTAVAIL => ErrorKind::AddrNotAvailable,
+        c::WSAECONNABORTED => ErrorKind::ConnectionAborted,
+        c::WSAECONNREFUSED => ErrorKind::ConnectionRefused,
+        c::WSAECONNRESET => ErrorKind::ConnectionReset,
+        c::WSAEINVAL => ErrorKind::InvalidInput,
+        c::WSAENOTCONN => ErrorKind::NotConnected,
+        c::WSAEWOULDBLOCK => ErrorKind::WouldBlock,
+        c::WSAETIMEDOUT => ErrorKind::TimedOut,
+
+        _ => ErrorKind::Other,
+    }
+}
+
+pub fn to_u16s<S: AsRef<OsStr>>(s: S) -> io::Result<Vec<u16>> {
+    fn inner(s: &OsStr) -> io::Result<Vec<u16>> {
+        let mut maybe_result: Vec<u16> = s.encode_wide().collect();
+        if maybe_result.iter().any(|&u| u == 0) {
+            return Err(io::Error::new(io::ErrorKind::InvalidInput,
+                                      "strings passed to WinAPI cannot contain NULs"));
+        }
+        maybe_result.push(0);
+        Ok(maybe_result)
+    }
+    inner(s.as_ref())
+}
+
+// Many Windows APIs follow a pattern of where we hand a buffer and then they
+// will report back to us how large the buffer should be or how many bytes
+// currently reside in the buffer. This function is an abstraction over these
+// functions by making them easier to call.
+//
+// The first callback, `f1`, is yielded a (pointer, len) pair which can be
+// passed to a syscall. The `ptr` is valid for `len` items (u16 in this case).
+// The closure is expected to return what the syscall returns which will be
+// interpreted by this function to determine if the syscall needs to be invoked
+// again (with more buffer space).
+//
+// Once the syscall has completed (errors bail out early) the second closure is
+// yielded the data which has been read from the syscall. The return value
+// from this closure is then the return value of the function.
+fn fill_utf16_buf<F1, F2, T>(mut f1: F1, f2: F2) -> io::Result<T>
+    where F1: FnMut(*mut u16, c::DWORD) -> c::DWORD,
+          F2: FnOnce(&[u16]) -> T
+{
+    // Start off with a stack buf but then spill over to the heap if we end up
+    // needing more space.
+    let mut stack_buf = [0u16; 512];
+    let mut heap_buf = Vec::new();
+    unsafe {
+        let mut n = stack_buf.len();
+        loop {
+            let buf = if n <= stack_buf.len() {
+                &mut stack_buf[..]
+            } else {
+                let extra = n - heap_buf.len();
+                heap_buf.reserve(extra);
+                heap_buf.set_len(n);
+                &mut heap_buf[..]
+            };
+
+            // This function is typically called on windows API functions which
+            // will return the correct length of the string, but these functions
+            // also return the `0` on error. In some cases, however, the
+            // returned "correct length" may actually be 0!
+            //
+            // To handle this case we call `SetLastError` to reset it to 0 and
+            // then check it again if we get the "0 error value". If the "last
+            // error" is still 0 then we interpret it as a 0 length buffer and
+            // not an actual error.
+            c::SetLastError(0);
+            let k = match f1(buf.as_mut_ptr(), n as c::DWORD) {
+                0 if c::GetLastError() == 0 => 0,
+                0 => return Err(io::Error::last_os_error()),
+                n => n,
+            } as usize;
+            if k == n && c::GetLastError() == c::ERROR_INSUFFICIENT_BUFFER {
+                n *= 2;
+            } else if k >= n {
+                n = k;
+            } else {
+                return Ok(f2(&buf[..k]))
+            }
+        }
+    }
+}
+
+fn os2path(s: &[u16]) -> PathBuf {
+    PathBuf::from(OsString::from_wide(s))
+}
+
+#[allow(dead_code)] // Only used in backtrace::gnu::get_executable_filename()
+fn wide_char_to_multi_byte(code_page: u32,
+                           flags: u32,
+                           s: &[u16],
+                           no_default_char: bool)
+                           -> io::Result<Vec<i8>> {
+    unsafe {
+        let mut size = c::WideCharToMultiByte(code_page,
+                                              flags,
+                                              s.as_ptr(),
+                                              s.len() as i32,
+                                              ptr::null_mut(),
+                                              0,
+                                              ptr::null(),
+                                              ptr::null_mut());
+        if size == 0 {
+            return Err(io::Error::last_os_error());
+        }
+
+        let mut buf = Vec::with_capacity(size as usize);
+        buf.set_len(size as usize);
+
+        let mut used_default_char = c::FALSE;
+        size = c::WideCharToMultiByte(code_page,
+                                      flags,
+                                      s.as_ptr(),
+                                      s.len() as i32,
+                                      buf.as_mut_ptr(),
+                                      buf.len() as i32,
+                                      ptr::null(),
+                                      if no_default_char { &mut used_default_char }
+                                      else { ptr::null_mut() });
+        if size == 0 {
+            return Err(io::Error::last_os_error());
+        }
+        if no_default_char && used_default_char == c::TRUE {
+            return Err(io::Error::new(io::ErrorKind::InvalidData,
+                                      "string cannot be converted to requested code page"));
+        }
+
+        buf.set_len(size as usize);
+
+        Ok(buf)
+    }
+}
+
+pub fn truncate_utf16_at_nul<'a>(v: &'a [u16]) -> &'a [u16] {
+    match v.iter().position(|c| *c == 0) {
+        // don't include the 0
+        Some(i) => &v[..i],
+        None => v
+    }
+}
+
+pub trait IsZero {
+    fn is_zero(&self) -> bool;
+}
+
+macro_rules! impl_is_zero {
+    ($($t:ident)*) => ($(impl IsZero for $t {
+        fn is_zero(&self) -> bool {
+            *self == 0
+        }
+    })*)
+}
+
+impl_is_zero! { i8 i16 i32 i64 isize u8 u16 u32 u64 usize }
+
+pub fn cvt<I: IsZero>(i: I) -> io::Result<I> {
+    if i.is_zero() {
+        Err(io::Error::last_os_error())
+    } else {
+        Ok(i)
+    }
+}
+
+pub fn dur2timeout(dur: Duration) -> c::DWORD {
+    // Note that a duration is a (u64, u32) (seconds, nanoseconds) pair, and the
+    // timeouts in windows APIs are typically u32 milliseconds. To translate, we
+    // have two pieces to take care of:
+    //
+    // * Nanosecond precision is rounded up
+    // * Greater than u32::MAX milliseconds (50 days) is rounded up to INFINITE
+    //   (never time out).
+    dur.as_secs().checked_mul(1000).and_then(|ms| {
+        ms.checked_add((dur.subsec_nanos() as u64) / 1_000_000)
+    }).and_then(|ms| {
+        ms.checked_add(if dur.subsec_nanos() % 1_000_000 > 0 {1} else {0})
+    }).map(|ms| {
+        if ms > <c::DWORD>::max_value() as u64 {
+            c::INFINITE
+        } else {
+            ms as c::DWORD
+        }
+    }).unwrap_or(c::INFINITE)
+}
+
+// On Windows, use the processor-specific __fastfail mechanism.  In Windows 8
+// and later, this will terminate the process immediately without running any
+// in-process exception handlers.  In earlier versions of Windows, this
+// sequence of instructions will be treated as an access violation,
+// terminating the process but without necessarily bypassing all exception
+// handlers.
+//
+// https://msdn.microsoft.com/en-us/library/dn774154.aspx
+#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
+pub unsafe fn abort_internal() -> ! {
+    asm!("int $$0x29" :: "{ecx}"(7) ::: volatile); // 7 is FAST_FAIL_FATAL_APP_EXIT
+    ::intrinsics::unreachable();
+}