| // Copyright 2019 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. |
| |
| package exec2 |
| |
| import ( |
| "context" |
| "os/exec" |
| ) |
| |
| // Cmd is like exec.Cmd, but supports terminate and process containment. |
| type Cmd struct { |
| *exec.Cmd |
| |
| attr attr |
| } |
| |
| // CommandContext is like exec.CommandContext, but it uses process group by |
| // default and supports timeout in Wait function. |
| func CommandContext(ctx context.Context, name string, arg ...string) *Cmd { |
| cmd := &Cmd{ |
| Cmd: exec.CommandContext(ctx, name, arg...), |
| } |
| |
| cmd.setupCmd() |
| |
| return cmd |
| } |
| |
| // Start starts command with appropriate setup. |
| func (c *Cmd) Start() error { |
| return c.start() |
| } |
| |
| // Wait waits to process to finish. |
| func (c *Cmd) Wait() error { |
| return c.wait() |
| } |
| |
| // Terminate sends SIGTERM on unix or CTRL+BREAK on windows. |
| func (c *Cmd) Terminate() error { |
| return c.terminate() |
| } |
| |
| // Kill kills process. |
| func (c *Cmd) Kill() error { |
| return c.kill() |
| } |