Upgrade dependencies

Author: acj

Cargo.toml

@@ -17,7 +17,7 @@ log = "0.4"
 mach2 = "0.6.0"
 
 [target.'cfg(windows)'.dependencies]
-windows-sys = { version = "0.52.0", features = [
+windows-sys = { version = "0.61", features = [
   "Win32_Foundation",
   "Win32_System_Diagnostics_Debug",
   "Win32_System_Threading",

src/lib.rs

@@ -403,6 +403,12 @@ mod platform {
     pub type Pid = u32;
     #[derive(Eq, PartialEq, Hash)]
     struct ProcessHandleInner(HANDLE);
+
+    // A HANDLE is an index into the process-wide kernel handle table rather than
+    // an address, so it stays valid on any thread
+    unsafe impl Send for ProcessHandleInner {}
+    unsafe impl Sync for ProcessHandleInner {}
+
     /// On Windows a `ProcessHandle` is a `HANDLE`.
     #[derive(Clone, Eq, PartialEq, Hash)]
     pub struct ProcessHandle(Arc<ProcessHandleInner>);