rewrite with crossbeam

Cargo.lock

@@ -1,3 +1,11 @@
+[[package]]
+name = "arrayvec"
+version = "0.4.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "nodrop 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "bitflags"
 version = "0.4.0"
@@ -32,6 +40,71 @@ name = "cfg-if"
 version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "cloudabi"
+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]]
+name = "crossbeam"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-channel 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-deque 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-epoch 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot 0.6.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "crossbeam-channel"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "crossbeam-epoch 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.6.0 (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)",
+]
+
+[[package]]
+name = "crossbeam-deque"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "crossbeam-epoch 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "crossbeam-epoch"
+version = "0.6.1"
+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 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "crossbeam-utils 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memoffset 0.2.1 (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 = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "custom_derive"
 version = "0.1.7"
@@ -64,6 +137,20 @@ dependencies = [
  "pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "fuchsia-zircon"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "fuchsia-zircon-sys"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "gcc"
 version = "0.3.55"
@@ -83,6 +170,11 @@ dependencies = [
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "lazy_static"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "libc"
 version = "0.2.43"
@@ -106,6 +198,15 @@ dependencies = [
  "pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "lock_api"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scopeguard 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "log"
 version = "0.3.9"
@@ -122,6 +223,11 @@ dependencies = [
  "cfg-if 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "memoffset"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "nix"
 version = "0.7.0"
@@ -148,15 +254,83 @@ dependencies = [
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "nodrop"
+version = "0.1.12"
+source = "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]]
+name = "owning_ref"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "parking_lot"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "lock_api 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "parking_lot_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "parking_lot_core"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "smallvec 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "pkg-config"
 version = "0.3.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "rand"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "rip-synergy"
 version = "0.1.0"
 dependencies = [
+ "crossbeam 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "evdev-rs 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "uinput 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -169,11 +343,50 @@ dependencies = [
  "semver 0.1.20 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rustc_version"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "scopeguard"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "semver"
 version = "0.1.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "semver"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "semver-parser"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "smallvec"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "unreachable 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "stable_deref_trait"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "uinput"
 version = "0.1.3"
@@ -196,6 +409,14 @@ dependencies = [
  "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "unreachable"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "void"
 version = "1.0.2"
@@ -206,31 +427,80 @@ name = "winapi"
 version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "winapi"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
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+ "winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
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+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
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Cargo.toml

@@ -7,3 +7,4 @@ edition = "2018"
 [dependencies]
 uinput = "0.1.3"
 evdev-rs = "0.1.0"
+crossbeam = "0.5"

src/hw_device.rs

@@ -1,5 +1,3 @@
-extern crate evdev_rs;
-
 use std::fs::File;
 
 pub struct HwDevice {

src/main.rs

@@ -1,14 +1,17 @@
 extern crate uinput;
 extern crate evdev_rs;
+#[macro_use]
+extern crate crossbeam;
 
 use std::thread;
 use std::time::Duration;
-use std::sync::{Arc, Mutex};
-use std::collections::VecDeque;
 
 use evdev_rs::util::event_code_to_int;
 use evdev_rs::enums::EventType::{EV_KEY, EV_REL};
 
+use crossbeam::crossbeam_channel::unbounded;
+use crossbeam::crossbeam_channel::Receiver;
+
 mod virtual_mouse;
 mod virtual_kbd;
 mod hw_device;
@@ -21,17 +24,56 @@ fn main() {
     let kbd_path = "/dev/input/by-id/usb-04d9_USB_Keyboard-event-kbd";
     let mouse_path = "/dev/input/by-id/usb-Kingsis_Peripherals_ZOWIE_Gaming_mouse-event-mouse";
 
-    // thread-safe event queue
+    let kbd_receiver = create_evdev_thread(kbd_path);
-    let queue = Arc::new(Mutex::new(VecDeque::new()));
+    let mouse_receiver = create_evdev_thread(mouse_path);
 
-    // start a thread listening to input events for each device
+    // init virtual devices
-    for &p in [kbd_path, mouse_path].iter() {
+    let mut virt_kbd = virtual_kbd::VirtualKeyboard::new("test-kbd");
-        // clone queue mutex reference for this thread
+    let mut virt_mouse = virtual_mouse::VirtualMouse::new("test-mouse");
-        let thread_queue = queue.clone();
+
+    // read events and feed them to the virtual devices
+    loop {
+        // TODO: use Select struct
+        // https://docs.rs/crossbeam/0.5.0/crossbeam/channel/struct.Select.html
+        select! {
+            recv(kbd_receiver) -> msg => {
+                match msg {
+                    Ok(e) => {
+                        if e.typ == EV_KEY as u32 && e.code == 1 {
+                            // quit on esc
+                            break;
+                        } else if e.typ == EV_KEY as u32 {
+                            virt_kbd.device.write(e.typ as i32, e.code as i32, e.value).unwrap();
+                            virt_kbd.device.synchronize().unwrap();
+                        }
+                    }
+                    _ => (),
+                }
+            },
+            recv(mouse_receiver) -> msg => {
+                match msg {
+                    Ok(e) => {
+                        if e.typ == EV_REL as u32 || (e.code >= 272 && e.code <= 276) {
+                            virt_mouse.device.write(e.typ as i32, e.code as i32, e.value).unwrap();
+                            virt_mouse.device.synchronize().unwrap();
+                        }
+                    }
+                    _ => (),
+                }
+            },
+        }
+    }
+}
+
+fn create_evdev_thread(device_path: &str) -> Receiver<ThreadInputEvent> {
+    let (send_channel, recv_channel) = unbounded();
+
+    // whatever
+    let device_path = String::from(device_path);
 
     thread::spawn(move || {
         // open device
-            let mut dev = hw_device::HwDevice::new(p);
+        let mut dev = hw_device::HwDevice::new(&device_path);
         // wait for device init
         thread::sleep(Duration::from_millis(200));
         // don't deliver events elsewhere
@@ -40,45 +82,17 @@ fn main() {
         loop {
             let event = dev.device.next_event(evdev_rs::NORMAL | evdev_rs::BLOCKING);
             match event {
-                    Ok(e) => thread_queue.lock().unwrap().push_back(
+                Ok(e) => send_channel.send(
                     ThreadInputEvent {
                         typ: e.1.event_type as u32,
                         code: event_code_to_int(&e.1.event_code).1,
                         value: e.1.value,
                     }
-                    ),
+                ).unwrap(),
                 Err(_) => (),
             }
         }
     });
-    }
-
-    // init virtual devices
-    let mut virt_kbd = virtual_kbd::VirtualKeyboard::new("test-kbd");
-    let mut virt_mouse = virtual_mouse::VirtualMouse::new("test-mouse");
-
-    // read events and feed them to the virtual devices
-    loop {
-        let event = queue.lock().unwrap().pop_front();
-        match event {
-            // quit on esc
-            Some(e) if e.typ == EV_KEY as u32 && e.code == 1 => break,
-            // mouse event
-            Some(e) if e.typ == EV_REL as u32 || (e.code >= 272 && e.code <= 276) => {
-                virt_mouse.device.write(e.typ as i32, e.code as i32, e.value).unwrap();
-                virt_mouse.device.synchronize().unwrap();
-            },
-            // keyboard event
-            Some(e) if e.typ == EV_KEY as u32 => {
-                virt_kbd.device.write(e.typ as i32, e.code as i32, e.value).unwrap();
-                virt_kbd.device.synchronize().unwrap();
-            },
-            // balance responsiveness and low cpu load
-            None => thread::sleep(Duration::from_millis(10)),
-            // print unknown events
-            // Some(e) => println!("{} {} {}", e.typ, e.code, e.value),
-            _ => (),
-        }
-    }
 
+    recv_channel
 }

src/virtual_kbd.rs

@@ -1,5 +1,3 @@
-extern crate uinput;
-
 use uinput::event::Keyboard;
 
 pub struct VirtualKeyboard {

src/virtual_mouse.rs

@@ -1,5 +1,3 @@
-extern crate uinput;
-
 use uinput::event::relative;
 use uinput::event::controller::Mouse;