From 24431520bf04e289ba5a2cfb922ae63e3899ed0c Mon Sep 17 00:00:00 2001
From: Eric Holk <eric.holk@gmail.com>
Date: Tue, 22 May 2012 10:44:40 -0700
Subject: [PATCH] Removing par.rs, since it's not usable now anyway.

---
 src/libstd/par.rs | 103 ----------------------------------------------
 src/libstd/std.rc |   2 -
 2 files changed, 105 deletions(-)
 delete mode 100644 src/libstd/par.rs

diff --git a/src/libstd/par.rs b/src/libstd/par.rs
deleted file mode 100644
index 5160e50fd9a..00000000000
--- a/src/libstd/par.rs
+++ /dev/null
@@ -1,103 +0,0 @@
-import comm::port;
-import comm::chan;
-import comm::send;
-import comm::recv;
-import task::spawn;
-
-export future;
-export map;
-export alli;
-
-iface future<T: send> {
-    fn get() -> T;
-}
-
-type future_<T: send> = {
-    mut slot : option<T>,
-    port : port<T>,
-};
-
-impl<T: send> of future<T> for future_<T> {
-    fn get() -> T {
-        alt(self.slot) {
-          some(x) { x }
-          none {
-            let x = recv(self.port);
-            self.slot = some(x);
-            x
-          }
-        }
-    }
-}
-
-
-#[doc="Executes a bit of code asynchronously.
-
-Returns a handle that can be used to retrieve the result at your
-leisure."]
-fn future<T: send>(thunk : fn~() -> T) -> future<T> {
-    let p = port();
-    let c = chan(p);
-
-    spawn() {||
-        send(c, thunk());
-    }
-
-    {mut slot: none::<T>, port : p} as future::<T>
-}
-
-#[doc="The maximum number of tasks this module will spawn for a single
- operationg."]
-const max_tasks : uint = 32u;
-
-#[doc="The minimum number of elements each task will process."]
-const min_granularity : uint = 1024u;
-
-#[doc="An internal helper to map a function over a large vector and
- return the intermediate results.
-
-This is used to build most of the other parallel vector functions,
-like map or alli."]
-fn map_slices<A: send, B: send>(xs: [A], f: fn~(uint, [A]) -> B) -> [B] {
-    let len = xs.len();
-    if len < min_granularity {
-        // This is a small vector, fall back on the normal map.
-        [f(0u, xs)]
-    }
-    else {
-        let num_tasks = uint::min(max_tasks, len / min_granularity);
-
-        let items_per_task = len / num_tasks;
-
-        let mut futures = [];
-        let mut base = 0u;
-        while base < len {
-            let slice = vec::slice(xs, base,
-                                   uint::min(len, base + items_per_task));
-            futures += [future() {|copy base|
-                f(base, slice)
-            }];
-            base += items_per_task;
-        }
-
-        futures.map() {|ys|
-            ys.get()
-        }
-    }
-}
-
-#[doc="A parallel version of map."]
-fn map<A: send, B: send>(xs: [A], f: fn~(A) -> B) -> [B] {
-    vec::concat(map_slices(xs) {|_base, slice|
-        map(slice, f)
-    })
-}
-
-#[doc="Returns true if the function holds for all elements in the vector."]
-fn alli<A: send>(xs: [A], f: fn~(uint, A) -> bool) -> bool {
-    vec::all(map_slices(xs) {|base, slice|
-        slice.alli() {|i, x|
-            f(i + base, x)
-        }
-    }) {|x| x }
-}
diff --git a/src/libstd/std.rc b/src/libstd/std.rc
index f25ceb87c3c..40a03ae25c2 100644
--- a/src/libstd/std.rc
+++ b/src/libstd/std.rc
@@ -19,7 +19,6 @@ export bitv, deque, fun_treemap, list, map, smallintmap, sort, treemap;
 export rope, arena;
 export ebml, dbg, getopts, json, rand, sha1, term, time, prettyprint;
 export test, tempfile, serialization;
-export par;
 
 // General io and system-services modules
 
@@ -59,7 +58,6 @@ mod getopts;
 mod json;
 mod sha1;
 mod md4;
-mod par;
 mod tempfile;
 mod term;
 mod time;