Merge pull request #46 from osui-rs/scope-performance-patch

Scope performance patch

README.md

@@ -17,21 +17,23 @@
 </p>
 
 <p align="center">
-  <b>OSUI is a customizable terminal user interface (TUI) library written in Rust. It provides a set of components and rsx to build interactive command-line interfaces with ease.</b>
+  <b>OSUI is a customizable terminal user interface (TUI) library written in Rust.</b>
 </p>
 
 ```rust
 use osui::prelude::*;
 
-fn main() -> std::io::Result<()> {
+pub fn main() {
-    let screen = Screen::new();
+    let engine = Console::new();
+    engine.run(App {}).expect("Failed to run engine");
+}
 
+#[component]
+fn App(cx: &Arc<Context>) -> View {
     rsx! {
-        "Hello, World"
+        "Hello World"
     }
-    .draw(&screen);
+    .view(&cx)
-
-    screen.run()
 }
 ```
 

benchmark.csv

@@ -1,227 +1,227 @@
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macros/src/emit.rs

@@ -76,15 +76,13 @@ fn emit_node_scope(node: &RsxNode) -> TokenStream {
                 {
                     #deps_emit
                     r.dynamic_scope(move |scope| {
-                        scope.access_children(|children| {
+                        if #cond {
-                            if #cond {
+                            if scope.children.lock().unwrap().is_empty() {
-                                if children.is_empty() {
+                                #(#kids)*
-                                    #(#kids)*
-                                }
-                            } else {
-                                .children.clear();
                             }
-                        })
+                        } else {
+                            scope.children.lock().unwrap().clear();
+                        }
                     }, #deps_vec_emit);
                 }
             }
@@ -105,7 +103,7 @@ fn emit_node_scope(node: &RsxNode) -> TokenStream {
                     #deps_emit
                     #[allow(unused_parens)]
                     r.dynamic_scope(move |scope| {
-                        scope.access_children(|children| children.clear());
+                        scope.children.lock().unwrap().clear();
                         for #pat in #expr {
                             #(#kids)*
                         }

src/component/context.rs

@@ -20,7 +20,7 @@ pub struct Context {
     component: AccessCell<Component>,
     view: AccessCell<View>,
     event_handlers: AccessCell<HashMap<TypeId, Vec<EventHandler>>>,
-    scopes: AccessCell<Vec<Arc<Scope>>>,
+    pub(crate) scopes: Mutex<Vec<Arc<Scope>>>,
     executor: Arc<dyn CommandExecutor>,
 }
 
@@ -33,7 +33,7 @@ impl Context {
             component: AccessCell::new(Arc::new(component)),
             view: AccessCell::new(Arc::new(|_| {})),
             event_handlers: AccessCell::new(HashMap::new()),
-            scopes: AccessCell::new(Vec::new()),
+            scopes: Mutex::new(Vec::new()),
             executor,
         })
     }
@@ -111,16 +111,11 @@ impl Context {
             (h.lock().unwrap())(self, event.as_ref());
         }
 
-        self.scopes.access(move |scopes| {
+        for scope in self.scopes.lock().unwrap().iter() {
-            for scope in scopes {
+            for (child, _) in scope.children.lock().unwrap().iter() {
-                let event = event.clone();
+                child.emit_event(event.clone());
-                scope.access_children(move |children| {
-                    for (child, _) in children {
-                        child.emit_event(event.clone());
-                    }
-                });
             }
-        });
+        }
     }
 
     pub fn emit_event_threaded<E: Any + Send + Sync + Clone + 'static>(
@@ -139,26 +134,16 @@ impl Context {
             });
         }
 
-        let event = event.clone();
+        for scope in self.scopes.lock().unwrap().iter() {
-        self.scopes.access(move |scopes| {
+            for (child, _) in scope.children.lock().unwrap().iter() {
-            for scope in scopes {
+                child.emit_event_threaded(event);
-                let event = event.clone();
-                scope.access_children(move |children| {
-                    for (child, _) in children {
-                        child.emit_event_threaded(&event);
-                    }
-                });
             }
-        });
+        }
     }
 
     pub fn scope(self: &Arc<Self>) -> Arc<Scope> {
         let scope = Scope::new(self.executor.clone());
-
+        self.scopes.lock().unwrap().push(scope.clone());
-        self.scopes.access({
-            let scope = scope.clone();
-            move |scopes| scopes.push(scope)
-        });
 
         scope
     }
@@ -169,11 +154,7 @@ impl Context {
         dependencies: &[&dyn HookDependency],
     ) -> Arc<Scope> {
         let scope = Scope::new(self.executor.clone());
-
+        self.scopes.lock().unwrap().push(scope.clone());
-        self.scopes.access({
-            let scope = scope.clone();
-            move |scopes| scopes.push(scope)
-        });
 
         drawer(&scope);
 
@@ -191,34 +172,21 @@ impl Context {
     }
 
     pub fn add_scope(self: &Arc<Self>, scope: Arc<Scope>) {
-        self.scopes.access(|scopes| scopes.push(scope));
+        self.scopes.lock().unwrap().push(scope);
     }
 
     pub fn draw_children(self: &Arc<Self>, ctx: &mut DrawContext) {
-        let c = ctx.clone();
+        for scope in self.scopes.lock().unwrap().iter() {
+            for (child, view_wrapper) in scope.children.lock().unwrap().iter() {
+                let view = child.get_view();
 
-        let (tx, rx) = std::sync::mpsc::channel::<DrawContext>();
+                if let Some(view_wrapper) = view_wrapper {
-
+                    view_wrapper(ctx, view)
-        self.scopes.access(move |scopes| {
+                } else {
-            for scope in scopes {
+                    ctx.draw_view(ctx.area.clone(), view);
-                let mut c = c.clone();
+                }
-                let tx = tx.clone();
-                scope.access_children(move |children| {
-                    for (child, view_wrapper) in children {
-                        let view = child.get_view();
-
-                        if let Some(view_wrapper) = view_wrapper {
-                            view_wrapper(&mut c, view)
-                        } else {
-                            c.draw_view(c.area.clone(), view);
-                        }
-                    }
-                    tx.send(c.clone()).expect("Failed transmitting DrawContext");
-                });
             }
-        });
+        }
-
-        *ctx = rx.recv().expect("Failed receiving DrawContext");
     }
 
     pub fn get_executor(self: &Arc<Self>) -> Arc<dyn CommandExecutor> {

src/component/scope.rs

@@ -1,19 +1,18 @@
-use super::{context::Context, ComponentImpl};
+use std::sync::{Arc, Mutex};
-use crate::{engine::CommandExecutor, View, ViewWrapper};
-use access_cell::AccessCell;
-use std::sync::Arc;
 
-pub type ScopeChildren = Vec<(Arc<Context>, Option<ViewWrapper>)>;
+use crate::{engine::CommandExecutor, View, ViewWrapper};
+
+use super::{context::Context, ComponentImpl};
 
 pub struct Scope {
-    children: AccessCell<ScopeChildren>,
+    pub children: Mutex<Vec<(Arc<Context>, Option<ViewWrapper>)>>,
     executor: Arc<dyn CommandExecutor>,
 }
 
 impl Scope {
     pub fn new(executor: Arc<dyn CommandExecutor>) -> Arc<Self> {
         Arc::new(Self {
-            children: AccessCell::new(Vec::new()),
+            children: Mutex::new(Vec::new()),
             executor,
         })
     }
@@ -27,8 +26,7 @@ impl Scope {
 
         ctx.refresh();
 
-        self.children
+        self.children.lock().unwrap().push((ctx, view_wrapper));
-            .access(|children| children.push((ctx, view_wrapper)));
     }
 
     pub fn view(self: &Arc<Self>, view: View) {
@@ -36,19 +34,6 @@ impl Scope {
 
         ctx.refresh();
 
-        self.children.access(|children| children.push((ctx, None)));
+        self.children.lock().unwrap().push((ctx, None));
-    }
-
-    pub fn view_wrapper(self: &Arc<Self>, view: View, view_wrapper: Option<ViewWrapper>) {
-        let ctx = Context::new(view, self.executor.clone());
-
-        ctx.refresh();
-
-        self.children
-            .access(|children| children.push((ctx, view_wrapper)));
-    }
-
-    pub fn access_children(self: &Arc<Self>, f: impl FnOnce(&mut ScopeChildren) + Send + 'static) {
-        self.children.access(f);
     }
 }