---

yaml
---
r: 143061
b: refs/heads/try2
c: 8aae6ed
h: refs/heads/master
i:
  143059: 703ffa7
v: v3

Author: bors

[refs]

@@ -5,7 +5,7 @@ refs/heads/snap-stage3: 78a7676898d9f80ab540c6df5d4c9ce35bb50463
 refs/heads/try: 519addf6277dbafccbb4159db4b710c37eaa2ec5
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
-refs/heads/try2: a1303cc81565a019d59be28940a94caf0f9329bf
+refs/heads/try2: 8aae6edce09a8e2a32a154acb55c9879dbebf99c
 refs/heads/dist-snap: ba4081a5a8573875fed17545846f6f6902c8ba8d
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/try2/Makefile.in

@@ -249,7 +249,7 @@ endef
 
 # Same interface as above, but deletes rather than just listing the files.
 define REMOVE_ALL_OLD_GLOB_MATCHES_EXCEPT
-  $(Q)MATCHES="$(filter-out %$(3),$(wildcard $(1)/$(2)))"; if [ -n "$$MATCHES" ] ; then echo "Warning: removing previous" \'$(2)\' "libraries:" $$MATCHES; rm -v $$MATCHES ; fi
+  $(Q)MATCHES="$(filter-out %$(3),$(wildcard $(1)/$(2)))"; if [ -n "$$MATCHES" ] ; then echo "Warning: removing previous" \'$(2)\' "libraries:" $$MATCHES; rm $$MATCHES ; fi
 endef
 
 # We use a different strategy for LIST_ALL_OLD_GLOB_MATCHES_EXCEPT

branches/try2/README.md

@@ -3,18 +3,72 @@
 This is a compiler for Rust, including standard libraries, tools and
 documentation.
 
+## Quick Start
 
-## Installation
+### Windows
 
-The Rust compiler currently must be built from a [tarball], unless you
-are on Windows, in which case using the [installer][win-exe] is
-recommended.
+1. Download and use the [installer][win-exe].
+2. Read the [tutorial].
+2. Enjoy!
 
-Since the Rust compiler is written in Rust, it must be built by
-a precompiled "snapshot" version of itself (made in an earlier state
-of development). As such, source builds require a connection to
-the Internet, to fetch snapshots, and an OS that can execute the
-available snapshot binaries.
+> ***Note:*** Windows users should read the detailed
+> [getting started][wiki-start] notes on the wiki. Even when using
+> the binary installer the Windows build requires a MinGW installation,
+> the precise details of which are not discussed here.
+
+[tutorial]: http://static.rust-lang.org/doc/tutorial.html
+[wiki-start]: https://github.com/mozilla/rust/wiki/Note-getting-started-developing-Rust
+[win-exe]: http://static.rust-lang.org/dist/rust-0.7-install.exe
+
+### Linux / OS X
+
+1. Install the prerequisites (if not already installed)
+    * g++ 4.4 or clang++ 3.x
+    * python 2.6 or later (but not 3.x)
+    * perl 5.0 or later
+    * gnu make 3.81 or later
+    * curl
+2. Download and build Rust
+    You can either download a [tarball] or build directly from the [repo].
+    
+    To build from the [tarball] do:
+    
+        $ curl -O http://static.rust-lang.org/dist/rust-0.7.tar.gz
+        $ tar -xzf rust-0.7.tar.gz
+        $ cd rust-0.7
+    
+    Or to build from the [repo] do:
+
+        $ git clone https://github.com/mozilla/rust.git
+        $ cd rust
+
+    Now that you have Rust's source code, you can configure and build it:
+    
+        $ ./configure
+        $ make && make install
+    
+    You may need to use `sudo make install` if you do not normally have
+    permission to modify the destination directory. The install locations can
+    be adjusted by passing a `--prefix` argument to `configure`. Various other
+    options are also supported, pass `--help` for more information on them.
+
+    When complete, `make install` will place several programs into
+    `/usr/local/bin`: `rustc`, the Rust compiler; `rustdoc`, the
+    API-documentation tool, and `rustpkg`, the Rust package manager and build
+    system.
+3. Read the [tutorial].
+4. Enjoy!
+
+[repo]: https://github.com/mozilla/rust
+[tarball]: http://static.rust-lang.org/dist/rust-0.7.tar.gz
+[tutorial]: http://static.rust-lang.org/doc/tutorial.html
+
+## Notes
+
+Since the Rust compiler is written in Rust, it must be built by a
+precompiled "snapshot" version of itself (made in an earlier state of
+development). As such, source builds require a connection to the Internet, to
+fetch snapshots, and an OS that can execute the available snapshot binaries.
 
 Snapshot binaries are currently built and tested on several platforms:
 
@@ -25,42 +79,12 @@ Snapshot binaries are currently built and tested on several platforms:
 You may find that other platforms work, but these are our "tier 1"
 supported build environments that are most likely to work.
 
-> ***Note:*** Windows users should read the detailed
-> [getting started][wiki-start] notes on the wiki. Even when using
-> the binary installer the Windows build requires a MinGW installation,
-> the precise details of which are not discussed here.
-
-To build from source you will also need the following prerequisite
-packages:
-
-* g++ 4.4 or clang++ 3.x
-* python 2.6 or later (but not 3.x)
-* perl 5.0 or later
-* gnu make 3.81 or later
-* curl
-
-Assuming you're on a relatively modern *nix system and have met the
-prerequisites, something along these lines should work.
-
-    $ curl -O http://static.rust-lang.org/dist/rust-0.7.tar.gz
-    $ tar -xzf rust-0.7.tar.gz
-    $ cd rust-0.7
-    $ ./configure
-    $ make && make install
+Rust currently needs about 1.8G of RAM to build without swapping; if it hits
+swap, it will take a very long time to build.
 
-You may need to use `sudo make install` if you do not normally have
-permission to modify the destination directory. The install locations
-can be adjusted by passing a `--prefix` argument to
-`configure`. Various other options are also supported, pass `--help`
-for more information on them.
+There is lots more documentation in the [wiki].
 
-When complete, `make install` will place several programs into
-`/usr/local/bin`: `rustc`, the Rust compiler; `rustdoc`, the
-API-documentation tool, and `rustpkg`, the Rust package manager and build system.
-
-[wiki-start]: https://github.com/mozilla/rust/wiki/Note-getting-started-developing-Rust
-[tarball]: http://static.rust-lang.org/dist/rust-0.7.tar.gz
-[win-exe]: http://static.rust-lang.org/dist/rust-0.7-install.exe
+[wiki]: https://github.com/mozilla/rust/wiki
 
 
 ## License
@@ -71,8 +95,3 @@ BSD-like licenses.
 
 See LICENSE-APACHE, LICENSE-MIT, and COPYRIGHT for details.
 
-## More help
-
-The [tutorial] is a good starting point.
-
-[tutorial]: http://static.rust-lang.org/doc/tutorial.html

branches/try2/configure

@@ -921,9 +921,6 @@ do
         esac
         need_ok "LLVM configure failed"
 
-        # Hack the tools Makefile to turn off the clang build
-        sed -i 's/clang//g' tools/Makefile
-
         cd $CFG_BUILD_DIR
     fi
 

branches/try2/doc/rust.md

@@ -573,8 +573,7 @@ The top level of this tree is a module that is anonymous (from the point of view
 
 The Rust compiler is always invoked with a single source file as input, and always produces a single output crate.
 The processing of that source file may result in other source files being loaded as modules.
-Source files typically have the extension `.rs` but, by convention,
-source files that represent crates have the extension `.rc`, called *crate files*.
+Source files have the extension `.rs`.
 
 A Rust source file describes a module, the name and
 location of which -- in the module tree of the current crate -- are defined
@@ -3286,7 +3285,7 @@ As an example, to see all the logs generated by the compiler, you would set
 you would set it to `rustc::metadata::creader`. To see just error logging
 use `rustc=0`.
 
-Note that when compiling either `.rs` or `.rc` files that don't specify a
+Note that when compiling source files that don't specify a
 crate name the crate is given a default name that matches the source file,
 with the extension removed. In that case, to turn on logging for a program
 compiled from, e.g. `helloworld.rs`, `RUST_LOG` should be set to `helloworld`.

branches/try2/src/libextra/arc.rs

@@ -50,9 +50,9 @@ use std::borrow;
 
 /// As sync::condvar, a mechanism for unlock-and-descheduling and signaling.
 pub struct Condvar<'self> {
-    is_mutex: bool,
-    failed: &'self mut bool,
-    cond: &'self sync::Condvar<'self>
+    priv is_mutex: bool,
+    priv failed: &'self mut bool,
+    priv cond: &'self sync::Condvar<'self>
 }
 
 impl<'self> Condvar<'self> {
@@ -108,7 +108,7 @@ impl<'self> Condvar<'self> {
  ****************************************************************************/
 
 /// An atomically reference counted wrapper for shared immutable state.
-pub struct ARC<T> { x: UnsafeAtomicRcBox<T> }
+pub struct ARC<T> { priv x: UnsafeAtomicRcBox<T> }
 
 /// Create an atomically reference counted wrapper.
 pub fn ARC<T:Freeze + Send>(data: T) -> ARC<T> {
@@ -123,6 +123,20 @@ impl<T:Freeze+Send> ARC<T> {
     pub fn get<'a>(&'a self) -> &'a T {
         unsafe { &*self.x.get_immut() }
     }
+
+    /**
+     * Retrieve the data back out of the ARC. This function blocks until the
+     * reference given to it is the last existing one, and then unwrap the data
+     * instead of destroying it.
+     *
+     * If multiple tasks call unwrap, all but the first will fail. Do not call
+     * unwrap from a task that holds another reference to the same ARC; it is
+     * guaranteed to deadlock.
+     */
+    pub fn unwrap(self) -> T {
+        let ARC { x: x } = self;
+        unsafe { x.unwrap() }
+    }
 }
 
 /**
@@ -143,9 +157,9 @@ impl<T:Freeze + Send> Clone for ARC<T> {
  ****************************************************************************/
 
 #[doc(hidden)]
-struct MutexARCInner<T> { lock: Mutex, failed: bool, data: T }
+struct MutexARCInner<T> { priv lock: Mutex, priv failed: bool, priv data: T }
 /// An ARC with mutable data protected by a blocking mutex.
-struct MutexARC<T> { x: UnsafeAtomicRcBox<MutexARCInner<T>> }
+struct MutexARC<T> { priv x: UnsafeAtomicRcBox<MutexARCInner<T>> }
 
 /// Create a mutex-protected ARC with the supplied data.
 pub fn MutexARC<T:Send>(user_data: T) -> MutexARC<T> {
@@ -225,6 +239,22 @@ impl<T:Send> MutexARC<T> {
                           cond: cond })
         }
     }
+
+    /**
+     * Retrieves the data, blocking until all other references are dropped,
+     * exactly as arc::unwrap.
+     *
+     * Will additionally fail if another task has failed while accessing the arc.
+     */
+    pub fn unwrap(self) -> T {
+        let MutexARC { x: x } = self;
+        let inner = unsafe { x.unwrap() };
+        let MutexARCInner { failed: failed, data: data, _ } = inner;
+        if failed {
+            fail!(~"Can't unwrap poisoned MutexARC - another task failed inside!");
+        }
+        data
+    }
 }
 
 // Common code for {mutex.access,rwlock.write}{,_cond}.
@@ -268,7 +298,7 @@ fn PoisonOnFail<'r>(failed: &'r mut bool) -> PoisonOnFail {
  ****************************************************************************/
 
 #[doc(hidden)]
-struct RWARCInner<T> { lock: RWlock, failed: bool, data: T }
+struct RWARCInner<T> { priv lock: RWlock, priv failed: bool, priv data: T }
 /**
  * A dual-mode ARC protected by a reader-writer lock. The data can be accessed
  * mutably or immutably, and immutably-accessing tasks may run concurrently.
@@ -278,7 +308,7 @@ struct RWARCInner<T> { lock: RWlock, failed: bool, data: T }
 #[mutable] // XXX remove after snap
 #[no_freeze]
 struct RWARC<T> {
-    x: UnsafeAtomicRcBox<RWARCInner<T>>,
+    priv x: UnsafeAtomicRcBox<RWARCInner<T>>,
 }
 
 /// Create a reader/writer ARC with the supplied data.
@@ -429,6 +459,23 @@ impl<T:Freeze + Send> RWARC<T> {
             }
         }
     }
+
+    /**
+     * Retrieves the data, blocking until all other references are dropped,
+     * exactly as arc::unwrap.
+     *
+     * Will additionally fail if another task has failed while accessing the arc
+     * in write mode.
+     */
+    pub fn unwrap(self) -> T {
+        let RWARC { x: x, _ } = self;
+        let inner = unsafe { x.unwrap() };
+        let RWARCInner { failed: failed, data: data, _ } = inner;
+        if failed {
+            fail!(~"Can't unwrap poisoned RWARC - another task failed inside!")
+        }
+        data
+    }
 }
 
 // Borrowck rightly complains about immutably aliasing the rwlock in order to
@@ -611,6 +658,23 @@ mod tests {
         }
     }
     #[test] #[should_fail] #[ignore(cfg(windows))]
+    pub fn test_mutex_arc_unwrap_poison() {
+        let arc = MutexARC(1);
+        let arc2 = ~(&arc).clone();
+        let (p, c) = comm::stream();
+        do task::spawn {
+            unsafe {
+                do arc2.access |one| {
+                    c.send(());
+                    assert!(*one == 2);
+                }
+            }
+        }
+        let _ = p.recv();
+        let one = arc.unwrap();
+        assert!(one == 1);
+    }
+    #[test] #[should_fail] #[ignore(cfg(windows))]
     fn test_rw_arc_poison_wr() {
         let arc = ~RWARC(1);
         let arc2 = (*arc).clone();

branches/try2/src/libextra/dlist.rs

@@ -208,7 +208,7 @@ impl<T> Deque<T> for DList<T> {
     ///
     /// O(1)
     fn pop_front(&mut self) -> Option<T> {
-        match util::replace(&mut self.list_head, None) {
+        match self.list_head.take() {
             None => None,
             Some(old_head) => {
                 self.length -= 1;

branches/try2/src/libextra/future.rs

@@ -60,6 +60,19 @@ impl<A:Clone> Future<A> {
     }
 }
 
+impl<A> Future<A> {
+    /// Gets the value from this future, forcing evaluation.
+    pub fn unwrap(self) -> A {
+        let mut this = self;
+        this.get_ref();
+        let state = replace(&mut this.state, Evaluating);
+        match state {
+            Forced(v) => v,
+            _ => fail!( "Logic error." ),
+        }
+    }
+}
+
 impl<A> Future<A> {
     pub fn get_ref<'a>(&'a mut self) -> &'a A {
         /*!
@@ -179,6 +192,12 @@ mod test {
         assert_eq!(f.get(), ~"fail");
     }
 
+    #[test]
+    fn test_interface_unwrap() {
+        let mut f = from_value(~"fail");
+        assert_eq!(f.unwrap(), ~"fail");
+    }
+
     #[test]
     fn test_get_ref_method() {
         let mut f = from_value(22);

branches/try2/src/libextra/ringbuf.rs

@@ -14,7 +14,6 @@
 //! extra::container::Deque`.
 
 use std::num;
-use std::util;
 use std::uint;
 use std::vec;
 use std::iterator::{FromIterator, InvertIterator};
@@ -72,7 +71,7 @@ impl<T> Deque<T> for RingBuf<T> {
 
     /// Remove and return the first element in the RingBuf, or None if it is empty
     fn pop_front(&mut self) -> Option<T> {
-        let result = util::replace(&mut self.elts[self.lo], None);
+        let result = self.elts[self.lo].take();
         if result.is_some() {
             self.lo = (self.lo + 1u) % self.elts.len();
             self.nelts -= 1u;
@@ -85,7 +84,7 @@ impl<T> Deque<T> for RingBuf<T> {
         if self.nelts > 0 {
             self.nelts -= 1;
             let hi = self.raw_index(self.nelts);
-            util::replace(&mut self.elts[hi], None)
+            self.elts[hi].take()
         } else {
             None
         }