resultdb/cli/terminate_windows.go

// Copyright 2021 The LUCI Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//go:build windows
// +build windows

package cli

import (
	"context"
	"os"
	"os/exec"
	"syscall"

	"golang.org/x/sys/windows"

	"go.chromium.org/luci/common/logging"
)

// setSysProcAttr sets flags which ensure the process starts in its own
// process group so that we can send signal to.
func setSysProcAttr(c *exec.Cmd) {
	c.SysProcAttr = &syscall.SysProcAttr{
		CreationFlags: syscall.CREATE_NEW_PROCESS_GROUP,
	}
}

func terminate(ctx context.Context, p *os.Process) error {
	logging.Infof(ctx, "Sending CTRL_BREAK_EVENT to the subprocess")
	return windows.GenerateConsoleCtrlEvent(windows.CTRL_BREAK_EVENT, uint32(p.Pid))
}