quick fix kill command under windows (#3106)

Author: J-shang

nni/tools/nnictl/command_utils.py

@@ -34,7 +34,8 @@ def check_output_command(file_path, head=None, tail=None):
 def kill_command(pid):
     """kill command"""
     if sys.platform == 'win32':
-        psutil.Process(pid).terminate()
+        process = psutil.Process(pid=pid)
+        process.send_signal(signal.CTRL_BREAK_EVENT)
     else:
         cmds = ['kill', str(pid)]
         call(cmds)

ts/nni_manager/main.ts

@@ -179,20 +179,7 @@ mkDirP(getLogDir())
         console.error(`Failed to create log dir: ${err.stack}`);
     });
 
-function getStopSignal(): any {
-    return 'SIGTERM';
-}
-
-function getCtrlCSignal(): any {
-    return 'SIGINT';
-}
-
-process.on(getCtrlCSignal(), async () => {
-    const log: Logger = getLogger();
-    log.info(`Get SIGINT signal!`);
-});
-
-process.on(getStopSignal(), async () => {
+async function cleanUp(): Promise<void> {
     const log: Logger = getLogger();
     let hasError: boolean = false;
     try {
@@ -206,7 +193,11 @@ process.on(getStopSignal(), async () => {
         hasError = true;
         log.error(`${err.stack}`);
     } finally {
-        await log.close();
+        log.close();
         process.exit(hasError ? 1 : 0);
     }
-});
+}
+
+process.on('SIGTERM', cleanUp);
+process.on('SIGBREAK', cleanUp);
+process.on('SIGINT', cleanUp);