Reduce size of sys::Events

Author: taiki-e

src/epoll.rs

@@ -279,7 +279,7 @@ fn write_flags() -> libc::c_int {
 
 /// A list of reported I/O events.
 pub struct Events {
-    list: Box<[libc::epoll_event]>,
+    list: Box<[libc::epoll_event; 1024]>,
     len: usize,
 }
 
@@ -289,7 +289,7 @@ impl Events {
     /// Creates an empty list.
     pub fn new() -> Events {
         let ev = libc::epoll_event { events: 0, u64: 0 };
-        let list = vec![ev; 1000].into_boxed_slice();
+        let list = Box::new([ev; 1024]);
         let len = 0;
         Events { list, len }
     }

src/kqueue.rs

@@ -204,7 +204,7 @@ impl Drop for Poller {
 
 /// A list of reported I/O events.
 pub struct Events {
-    list: Box<[libc::kevent]>,
+    list: Box<[libc::kevent; 1024]>,
     len: usize,
 }
 
@@ -221,7 +221,7 @@ impl Events {
             data: 0,
             udata: 0 as _,
         };
-        let list = vec![ev; 1000].into_boxed_slice();
+        let list = Box::new([ev; 1024]);
         let len = 0;
         Events { list, len }
     }

src/port.rs

@@ -179,7 +179,7 @@ fn write_flags() -> libc::c_short {
 
 /// A list of reported I/O events.
 pub struct Events {
-    list: Box<[libc::port_event]>,
+    list: Box<[libc::port_event; 1024]>,
     len: usize,
 }
 
@@ -195,7 +195,7 @@ impl Events {
             portev_object: 0,
             portev_user: 0 as _,
         };
-        let list = vec![ev; 1000].into_boxed_slice();
+        let list = Box::new([ev; 1024]);
         let len = 0;
         Events { list, len }
     }

src/wepoll.rs

@@ -200,7 +200,7 @@ const WRITE_FLAGS: u32 = we::EPOLLOUT | we::EPOLLHUP | we::EPOLLERR;
 
 /// A list of reported I/O events.
 pub struct Events {
-    list: Box<[we::epoll_event]>,
+    list: Box<[we::epoll_event; 1024]>,
     len: usize,
 }
 
@@ -213,10 +213,8 @@ impl Events {
             events: 0,
             data: we::epoll_data { u64_: 0 },
         };
-        Events {
-            list: vec![ev; 1000].into_boxed_slice(),
-            len: 0,
-        }
+        let list = Box::new([ev; 1024]);
+        Events { list, len: 0 }
     }
 
     /// Iterates over I/O events.