1 files changed, 34 insertions, 6 deletions

diff --git a/platform/windows/os_windows.cpp b/platform/windows/os_windows.cpp
index d5bb85c035..c6a651bc7d 100644
--- a/platform/windows/os_windows.cpp
+++ b/platform/windows/os_windows.cpp
@@ -190,6 +190,28 @@ BOOL WINAPI HandlerRoutine(_In_ DWORD dwCtrlType) {
 	}
 }
 
+BOOL CALLBACK _CloseWindowsEnum(HWND hWnd, LPARAM lParam) {
+	DWORD dwID;
+
+	GetWindowThreadProcessId(hWnd, &dwID);
+
+	if (dwID == (DWORD)lParam) {
+		PostMessage(hWnd, WM_CLOSE, 0, 0);
+	}
+
+	return TRUE;
+}
+
+bool _close_gracefully(const PROCESS_INFORMATION &pi, const DWORD dwStopWaitMsec) {
+	if (!EnumWindows(_CloseWindowsEnum, pi.dwProcessId))
+		return false;
+
+	if (WaitForSingleObject(pi.hProcess, dwStopWaitMsec) != WAIT_OBJECT_0)
+		return false;
+
+	return true;
+}
+
 void OS_Windows::initialize_debugging() {
 
 	SetConsoleCtrlHandler(HandlerRoutine, TRUE);
@@ -2322,20 +2344,26 @@ Error OS_Windows::execute(const String &p_path, const List<String> &p_arguments,
 	return OK;
 };
 
-Error OS_Windows::kill(const ProcessID &p_pid) {
-
+Error OS_Windows::kill(const ProcessID &p_pid, const int p_max_wait_msec) {
 	ERR_FAIL_COND_V(!process_map->has(p_pid), FAILED);
 
 	const PROCESS_INFORMATION pi = (*process_map)[p_pid].pi;
 	process_map->erase(p_pid);
 
-	const int ret = TerminateProcess(pi.hProcess, 0);
+	Error result;
+
+	if (p_max_wait_msec != -1 && _close_gracefully(pi, p_max_wait_msec)) {
+		result = OK;
+	} else {
+		const int ret = TerminateProcess(pi.hProcess, 0);
+		result = ret != 0 ? OK : FAILED;
+	}
 
 	CloseHandle(pi.hProcess);
 	CloseHandle(pi.hThread);
 
-	return ret != 0 ? OK : FAILED;
-};
+	return result;
+}
 
 int OS_Windows::get_process_id() const {
 	return _getpid();
@@ -2777,7 +2805,7 @@ int OS_Windows::get_power_percent_left() {
 
 bool OS_Windows::_check_internal_feature_support(const String &p_feature) {
 
-	return p_feature == "pc" || p_feature == "s3tc";
+	return p_feature == "pc" || p_feature == "s3tc" || p_feature == "bptc";
 }
 
 void OS_Windows::disable_crash_handler() {