rayon

Cargo.lock

@@ -84,14 +84,6 @@ dependencies = [
  "vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
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-version = "0.0.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
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 version = "0.2.0"
@@ -150,34 +142,35 @@ dependencies = [
 ]
 
 [[package]]
-name = "crossbeam-channel"
-version = "0.2.6"
+name = "crossbeam-deque"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "crossbeam-epoch 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "crossbeam-utils 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "parking_lot 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-epoch 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "crossbeam-epoch"
-version = "0.6.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "arrayvec 0.4.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "crossbeam-utils 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "memoffset 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nodrop 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "crossbeam-utils"
-version = "0.5.0"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "crypto-hash"
@@ -298,15 +291,6 @@ name = "libc"
 version = "0.2.43"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "lock_api"
-version = "0.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
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- "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
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-
 [[package]]
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@@ -323,6 +307,15 @@ dependencies = [
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 ]
 
+[[package]]
+name = "memmap"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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 version = "0.2.1"
@@ -354,6 +347,14 @@ dependencies = [
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "num_cpus"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@@ -378,35 +379,6 @@ dependencies = [
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 ]
 
-[[package]]
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
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-
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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-
 [[package]]
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@@ -433,8 +405,9 @@ name = "rainbowcazzi"
 version = "0.1.0"
 dependencies = [
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- "crossbeam-channel 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "crypto-hash 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memmap 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rayon 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -458,21 +431,25 @@ dependencies = [
 ]
 
 [[package]]
-name = "rand"
-version = "0.5.5"
+name = "rayon"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
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- "rand_core 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "either 1.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rayon-core 1.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
-name = "rand_core"
-version = "0.2.1"
+name = "rayon-core"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "crossbeam-deque 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "redox_syscall"
@@ -492,14 +469,6 @@ name = "rustc-demangle"
 version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "rustc_version"
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-source = "registry+https://github.com/rust-lang/crates.io-index"
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-
 [[package]]
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@@ -510,19 +479,6 @@ name = "scopeguard"
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-[[package]]
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-
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@@ -558,19 +514,6 @@ dependencies = [
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-source = "registry+https://github.com/rust-lang/crates.io-index"
-
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@@ -659,14 +602,6 @@ name = "unicode-xid"
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@@ -682,11 +617,6 @@ name = "version_check"
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-"checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
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@@ -798,11 +720,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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-"checksum unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "382810877fe448991dfc7f0dd6e3ae5d58088fd0ea5e35189655f84e6814fa56"
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Cargo.toml

@@ -6,7 +6,8 @@ edition = "2018"
 
 [dependencies]
 crypto-hash = "0.3.1"
-crossbeam-channel = "0.2.6"
+rayon = "1.0.2"
+memmap = "0.7.0"
 
 [dev-dependencies]
 criterion = "0.1.2"

src/lib.rs

@@ -1,45 +1,20 @@
 extern crate crypto_hash;
-extern crate crossbeam_channel;
+extern crate rayon;
+extern crate memmap;
 
-use std::io::BufReader;
 use crypto_hash::{Algorithm, hex_digest};
-use crossbeam_channel as channel;
-use std::thread;
-use std::io::prelude::*;
 use std::fs::File;
+use memmap::MmapOptions;
+use rayon::prelude::*;
 
-const NWORKERS: usize = 10;
 
 pub fn rainbow(file: &str) {
-    let f = File::open(file).unwrap();
-    let reader = BufReader::new(f);
+    let file = File::open(file).unwrap();
+    let mmap = unsafe { MmapOptions::new().map(&file).unwrap() };
 
-    let (sx, rx) = channel::unbounded();
-
-    let prod = thread::spawn(move|| {
-        for line in reader.lines() {
-            let _ = sx.send(line.unwrap());
-        }
-    });
-
-    let mut workers = Vec::with_capacity(NWORKERS);
-    for _ in 0..NWORKERS {
-        let rx = rx.clone();
-        workers.push(thread::spawn(move|| {
-            loop {
-                match rx.try_recv() {
-                    Some(line) => {
-                        let _digest = hex_digest(Algorithm::MD5, line.as_bytes());
-                        // println!("{}", _digest);
-                    },
-                    None => break
-                }
-            }
-        }));
-    }
-
-    let _ = prod.join();
-    for _ in 0..NWORKERS {
-        workers.pop().unwrap().join().unwrap();
-    }
+    mmap.par_split(|c| *c == '\n' as u8)
+        .map(|coso| {
+            let _hash = hex_digest(Algorithm::MD5, coso);
+            // println!("{}", _hash);
+        }).collect::<()>();
 }