rollup merge of #20315: alexcrichton/std-sync

Conflicts:
	src/libstd/rt/exclusive.rs
	src/libstd/sync/barrier.rs
	src/libstd/sys/unix/pipe.rs
	src/test/bench/shootout-binarytrees.rs
	src/test/bench/shootout-fannkuch-redux.rs

src/libstd/sys/common/thread_local.rs

@@ -137,7 +137,7 @@ pub const INIT: StaticKey = StaticKey {
 ///
 /// This value allows specific configuration of the destructor for a TLS key.
 pub const INIT_INNER: StaticKeyInner = StaticKeyInner {
-    key: atomic::INIT_ATOMIC_UINT,
+    key: atomic::ATOMIC_UINT_INIT,
 };
 
 static INIT_KEYS: Once = ONCE_INIT;

src/libstd/sys/unix/os.rs

@@ -20,7 +20,7 @@ use libc::{mod, c_int, c_char, c_void};
 use os;
 use path::{BytesContainer};
 use ptr;
-use sync::atomic::{AtomicInt, INIT_ATOMIC_INT, SeqCst};
+use sync::atomic::{AtomicInt, SeqCst};
 use sys::fs::FileDesc;
 
 use os::TMPBUF_SZ;

src/libstd/sys/unix/pipe.rs

@@ -10,6 +10,8 @@
 
 use prelude::v1::*;
 
+use prelude::*;
+
 use libc;
 use c_str::CString;
 use mem;
@@ -117,9 +119,6 @@ pub struct UnixStream {
     write_deadline: u64,
 }
 
-unsafe impl Send for UnixStream {}
-unsafe impl Sync for UnixStream {}
-
 impl UnixStream {
     pub fn connect(addr: &CString,
                    timeout: Option<u64>) -> IoResult<UnixStream> {
@@ -218,6 +217,7 @@ pub struct UnixListener {
     path: CString,
 }
 
+// we currently own the CString, so these impls should be safe
 unsafe impl Send for UnixListener {}
 unsafe impl Sync for UnixListener {}
 
@@ -265,9 +265,6 @@ struct AcceptorInner {
     closed: atomic::AtomicBool,
 }
 
-unsafe impl Send for AcceptorInner {}
-unsafe impl Sync for AcceptorInner {}
-
 impl UnixAcceptor {
     pub fn fd(&self) -> fd_t { self.inner.listener.fd() }
 

src/libstd/sys/unix/timer.rs

@@ -211,7 +211,7 @@ impl Timer {
         // instead of ()
         HELPER.boot(|| {}, helper);
 
-        static ID: atomic::AtomicUint = atomic::INIT_ATOMIC_UINT;
+        static ID: atomic::AtomicUint = atomic::ATOMIC_UINT_INIT;
         let id = ID.fetch_add(1, atomic::Relaxed);
         Ok(Timer {
             id: id,

src/libstd/sys/windows/mod.rs

@@ -173,7 +173,7 @@ pub fn init_net() {
     unsafe {
         static START: Once = ONCE_INIT;
 
-        START.doit(|| {
+        START.call_once(|| {
             let mut data: c::WSADATA = mem::zeroed();
             let ret = c::WSAStartup(0x202, // version 2.2
                                     &mut data);

src/libstd/sys/windows/mutex.rs

@@ -20,7 +20,7 @@ const SPIN_COUNT: DWORD = 4000;
 
 pub struct Mutex { inner: atomic::AtomicUint }
 
-pub const MUTEX_INIT: Mutex = Mutex { inner: atomic::INIT_ATOMIC_UINT };
+pub const MUTEX_INIT: Mutex = Mutex { inner: atomic::ATOMIC_UINT_INIT };
 
 unsafe impl Sync for Mutex {}