Implement Deno.kill for windows (#5347)

1 files changed, 41 insertions, 2 deletions

diff --git a/cli/signal.rs b/cli/signal.rs
index 6be588b84..f74f9ab26 100644
--- a/cli/signal.rs
+++ b/cli/signal.rs
@@ -1,6 +1,23 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
 use crate::op_error::OpError;
 
+#[cfg(not(unix))]
+const SIGINT: i32 = 2;
+#[cfg(not(unix))]
+const SIGKILL: i32 = 9;
+#[cfg(not(unix))]
+const SIGTERM: i32 = 15;
+
+#[cfg(not(unix))]
+use winapi::{
+  shared::minwindef::DWORD,
+  um::{
+    handleapi::CloseHandle,
+    processthreadsapi::{OpenProcess, TerminateProcess},
+    winnt::PROCESS_TERMINATE,
+  },
+};
+
 #[cfg(unix)]
 pub fn kill(pid: i32, signo: i32) -> Result<(), OpError> {
   use nix::sys::signal::{kill as unix_kill, Signal};
@@ -11,7 +28,29 @@ pub fn kill(pid: i32, signo: i32) -> Result<(), OpError> {
 }
 
 #[cfg(not(unix))]
-pub fn kill(_pid: i32, _signal: i32) -> Result<(), OpError> {
-  // TODO: implement this for windows
+pub fn kill(pid: i32, signal: i32) -> Result<(), OpError> {
+  match signal {
+    SIGINT | SIGKILL | SIGTERM => {
+      if pid <= 0 {
+        return Err(OpError::type_error("unsupported pid".to_string()));
+      }
+      unsafe {
+        let handle = OpenProcess(PROCESS_TERMINATE, 0, pid as DWORD);
+        if handle.is_null() {
+          return Err(OpError::from(std::io::Error::last_os_error()));
+        }
+        if TerminateProcess(handle, 1) == 0 {
+          CloseHandle(handle);
+          return Err(OpError::from(std::io::Error::last_os_error()));
+        }
+        if CloseHandle(handle) == 0 {
+          return Err(OpError::from(std::io::Error::last_os_error()));
+        }
+      }
+    }
+    _ => {
+      return Err(OpError::type_error("unsupported signal".to_string()));
+    }
+  }
   Ok(())
 }