fix comments and add benchmark

Signed-off-by: glorv <glorvs@163.com>

benches/chained_spawn.rs

@@ -35,7 +35,8 @@ mod yatp_callback {
 
 mod yatp_future {
     use criterion::*;
-    use std::sync::mpsc;
+    use std::sync::{mpsc, Arc};
+    use yatp::queue::priority::TaskPriorityProvider;
     use yatp::task::future::TaskCell;
     use yatp::Remote;
 
@@ -73,6 +74,20 @@ mod yatp_future {
         let pool = yatp::Builder::new("chained_spawn").build_multilevel_future_pool();
         chained_spawn(b, pool, iter_count)
     }
+
+    pub fn chained_spawn_priority(b: &mut Bencher<'_>, iter_count: usize) {
+        struct ConstantPriorityPrivider;
+
+        impl TaskPriorityProvider for ConstantPriorityPrivider {
+            fn priority_of(&self, _extras: &yatp::queue::Extras) -> u64 {
+                // return a constant value so the queue workes the same as FIFO queue.
+                0
+            }
+        }
+        let pool = yatp::Builder::new("chained_spawn")
+            .build_priority_future_pool(Arc::new(ConstantPriorityPrivider));
+        chained_spawn(b, pool, iter_count)
+    }
 }
 
 mod tokio {
@@ -153,6 +168,9 @@ pub fn chained_spawn(b: &mut Criterion) {
             i,
             |b, i| yatp_future::chained_spawn_multilevel(b, *i),
         );
+        group.bench_with_input(BenchmarkId::new("yatp::future::priority", i), i, |b, i| {
+            yatp_future::chained_spawn_priority(b, *i)
+        });
         group.bench_with_input(BenchmarkId::new("tokio", i), i, |b, i| {
             tokio::chained_spawn(b, *i)
         });

benches/ping_pong.rs

@@ -53,6 +53,7 @@ mod yatp_future {
     use std::sync::atomic::*;
     use std::sync::*;
     use tokio::sync::oneshot;
+    use yatp::queue::priority::TaskPriorityProvider;
     use yatp::task::future::TaskCell;
 
     fn ping_pong(b: &mut Bencher<'_>, pool: yatp::ThreadPool<TaskCell>, ping_count: usize) {
@@ -105,6 +106,19 @@ mod yatp_future {
         let pool = yatp::Builder::new("ping_pong").build_multilevel_future_pool();
         ping_pong(b, pool, ping_count)
     }
+
+    pub fn ping_pong_priority(b: &mut Bencher<'_>, ping_count: usize) {
+        struct ConstantPriorityPrivider;
+        impl TaskPriorityProvider for ConstantPriorityPrivider {
+            fn priority_of(&self, _extras: &yatp::queue::Extras) -> u64 {
+                // return a constant value so the queue workes the same as FIFO queue.
+                0
+            }
+        }
+        let pool = yatp::Builder::new("ping_pong")
+            .build_priority_future_pool(Arc::new(ConstantPriorityPrivider));
+        ping_pong(b, pool, ping_count)
+    }
 }
 
 mod tokio {
@@ -219,6 +233,9 @@ pub fn ping_pong(b: &mut Criterion) {
             i,
             |b, i| yatp_future::ping_pong_multilevel(b, *i),
         );
+        group.bench_with_input(BenchmarkId::new("yatp::future::priority", i), i, |b, i| {
+            yatp_future::ping_pong_priority(b, *i)
+        });
         group.bench_with_input(BenchmarkId::new("tokio", i), i, |b, i| {
             tokio::ping_pong(b, *i)
         });

benches/spawn_many.rs

@@ -35,6 +35,7 @@ mod yatp_future {
     use criterion::*;
     use std::sync::atomic::*;
     use std::sync::*;
+    use yatp::queue::priority::TaskPriorityProvider;
     use yatp::task::future::TaskCell;
 
     fn spawn_many(b: &mut Bencher<'_>, pool: yatp::ThreadPool<TaskCell>, spawn_count: usize) {
@@ -68,6 +69,19 @@ mod yatp_future {
         let pool = yatp::Builder::new("spawn_many").build_multilevel_future_pool();
         spawn_many(b, pool, spawn_count)
     }
+
+    pub fn spawn_many_priority(b: &mut Bencher<'_>, spawn_count: usize) {
+        struct ConstantPriorityPrivider;
+        impl TaskPriorityProvider for ConstantPriorityPrivider {
+            fn priority_of(&self, _extras: &yatp::queue::Extras) -> u64 {
+                // return a constant value so the queue workes the same as FIFO queue.
+                0
+            }
+        }
+        let pool = yatp::Builder::new("spawn_many")
+            .build_priority_future_pool(Arc::new(ConstantPriorityPrivider));
+        spawn_many(b, pool, spawn_count)
+    }
 }
 
 mod threadpool {
@@ -174,6 +188,9 @@ pub fn spawn_many(b: &mut Criterion) {
             i,
             |b, i| yatp_future::spawn_many_multilevel(b, *i),
         );
+        group.bench_with_input(BenchmarkId::new("yatp::future::priority", i), i, |b, i| {
+            yatp_future::spawn_many_priority(b, *i)
+        });
         group.bench_with_input(BenchmarkId::new("threadpool", i), i, |b, i| {
             threadpool::spawn_many(b, *i)
         });

benches/yield_many.rs

@@ -61,7 +61,8 @@ mod yatp_callback {
 
 mod yatp_future {
     use criterion::*;
-    use std::sync::mpsc;
+    use std::sync::{mpsc, Arc};
+    use yatp::queue::priority::TaskPriorityProvider;
     use yatp::task::future::TaskCell;
 
     fn yield_many(b: &mut Bencher<'_>, pool: yatp::ThreadPool<TaskCell>, yield_count: usize) {
@@ -94,6 +95,19 @@ mod yatp_future {
         let pool = yatp::Builder::new("yield_many").build_multilevel_future_pool();
         yield_many(b, pool, yield_count)
     }
+
+    pub fn yield_many_priority(b: &mut Bencher<'_>, yield_count: usize) {
+        struct ConstantPriorityPrivider;
+        impl TaskPriorityProvider for ConstantPriorityPrivider {
+            fn priority_of(&self, _extras: &yatp::queue::Extras) -> u64 {
+                // return a constant value so the queue workes the same as FIFO queue.
+                0
+            }
+        }
+        let pool = yatp::Builder::new("yield_many")
+            .build_priority_future_pool(Arc::new(ConstantPriorityPrivider));
+        yield_many(b, pool, yield_count)
+    }
 }
 
 mod tokio {
@@ -167,6 +181,9 @@ pub fn yield_many(b: &mut Criterion) {
             i,
             |b, i| yatp_future::yield_many_multilevel(b, *i),
         );
+        group.bench_with_input(BenchmarkId::new("yatp::future::priority", i), i, |b, i| {
+            yatp_future::yield_many_priority(b, *i)
+        });
         group.bench_with_input(BenchmarkId::new("tokio", i), i, |b, i| {
             tokio::yield_many(b, *i)
         });

src/queue/extras.rs

@@ -28,7 +28,7 @@ pub struct Extras {
     pub(crate) fixed_level: Option<u8>,
     /// Number of execute times
     pub(crate) exec_times: u32,
-    /// Extra metadata of this task. User can use this field to store arbitrary data. It is useful 
+    /// Extra metadata of this task. User can use this field to store arbitrary data. It is useful
     /// in some case to implement more complext `TaskPriorityProvider` in the priority task queue.
     pub(crate) metadata: Vec<u8>,
 }

src/queue/priority.rs

@@ -59,22 +59,13 @@ where
     }
 }
 
-/// The local queue is just a proxy of the global queue.
-pub(crate) struct LocalQueue<T> {
-    queue: Arc<QueueCore<T>>,
-    task_manager: PriorityTaskManager,
-}
+/// priority queue does not have local queue, all tasks are always put in the global queue.
+pub(crate) type LocalQueue<T> = TaskInjector<T>;
 
 impl<T> LocalQueue<T>
 where
     T: TaskCell + Send,
 {
-    pub(super) fn push(&mut self, mut task_cell: T) {
-        let priority = self.task_manager.prepare_before_push(&mut task_cell);
-        set_schedule_time(&mut task_cell);
-        self.queue.push(task_cell, priority);
-    }
-
     pub(super) fn pop(&mut self) -> Option<Pop<T>> {
         self.queue.pop()
     }
@@ -88,7 +79,7 @@ where
 pub trait TaskPriorityProvider: Send + Sync + 'static {
     /// Return a priority value of this task, all tasks in the priority
     /// queue is ordered by this value.
-    fn get_priority(&self, extras: &Extras) -> u64;
+    fn priority_of(&self, extras: &Extras) -> u64;
 }
 
 #[derive(Clone)]
@@ -103,7 +94,7 @@ impl PriorityTaskManager {
         T: TaskCell,
     {
         self.level_manager.adjust_task_level(task_cell);
-        self.priority_manager.get_priority(task_cell.mut_extras())
+        self.priority_manager.priority_of(task_cell.mut_extras())
     }
 }
 
@@ -415,7 +406,7 @@ mod tests {
         struct OrderByIdProvider;
 
         impl TaskPriorityProvider for OrderByIdProvider {
-            fn get_priority(&self, extras: &Extras) -> u64 {
+            fn priority_of(&self, extras: &Extras) -> u64 {
                 return extras.task_id();
             }
         }