1 files changed, 39 insertions, 0 deletions
diff --git a/third_party/rust/wio/src/apc.rs b/third_party/rust/wio/src/apc.rs
new file mode 100644
index 0000000000..21dcef2974
--- /dev/null
+++ b/third_party/rust/wio/src/apc.rs
@@ -0,0 +1,39 @@
+// Licensed under the Apache License, Version 2.0
+// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
+// All files in the project carrying such notice may not be copied, modified, or distributed
+// except according to those terms.
+use {Result, k32, last_error, w};
+use std::os::windows::io::{AsRawHandle};
+use thread::{Thread};
+
+pub fn queue<T>(func: T, thread: &Thread) -> Result<()> where T: FnOnce() + 'static {
+    unsafe extern "system" fn helper<T: FnOnce() + 'static>(thing: w::ULONG_PTR) {
+        let func = Box::from_raw(thing as *mut T);
+        func()
+    }
+    let thing = Box::into_raw(Box::new(func)) as w::ULONG_PTR;
+    match unsafe { k32::QueueUserAPC(Some(helper::<T>), thread.as_raw_handle(), thing) } {
+        0 => {
+            // If it fails we still need to deallocate the function
+            unsafe { Box::from_raw(thing as *mut T) };
+            last_error()
+        },
+        _ => Ok(()),
+    }
+}
+pub fn queue_current<T>(func: T) -> Result<()> where T: FnOnce() + 'static {
+    unsafe extern "system" fn helper<T: FnOnce() + 'static>(thing: w::ULONG_PTR) {
+        let func = Box::from_raw(thing as *mut T);
+        func()
+    }
+    let thing = Box::into_raw(Box::new(func)) as w::ULONG_PTR;
+    match unsafe { k32::QueueUserAPC(Some(helper::<T>), k32::GetCurrentThread(), thing) } {
+        0 => {
+            // If it fails we still need to deallocate the function
+            unsafe { Box::from_raw(thing as *mut T) };
+            last_error()
+        },
+        _ => Ok(()),
+    }
+}