809cc6f58a
This doesn't catch all the possible causes of timeouts, (like if Ninja is only partially stuck or if Kati is stuck) but it should clarify some causes of stuckness Bug: 62065855 Test: m -j showcommands NINJA_HEARTBEAT_INTERVAL=500ms Change-Id: I73a792ae91873b19d7b336166a2d47f37c549906
145 lines
3.3 KiB
Go
145 lines
3.3 KiB
Go
// Copyright 2017 Google Inc. All rights reserved.
|
|
//
|
|
// 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 build
|
|
|
|
import (
|
|
"os/exec"
|
|
)
|
|
|
|
// Cmd is a wrapper of os/exec.Cmd that integrates with the build context for
|
|
// logging, the config's Environment for simpler environment modification, and
|
|
// implements hooks for sandboxing
|
|
type Cmd struct {
|
|
*exec.Cmd
|
|
|
|
Environment *Environment
|
|
Sandbox Sandbox
|
|
|
|
ctx Context
|
|
config Config
|
|
name string
|
|
|
|
// doneChannel closes to signal the command's termination
|
|
doneChannel chan bool
|
|
}
|
|
|
|
func Command(ctx Context, config Config, name string, executable string, args ...string) *Cmd {
|
|
ret := &Cmd{
|
|
Cmd: exec.CommandContext(ctx.Context, executable, args...),
|
|
Environment: config.Environment().Copy(),
|
|
Sandbox: noSandbox,
|
|
|
|
ctx: ctx,
|
|
config: config,
|
|
name: name,
|
|
doneChannel: make(chan bool),
|
|
}
|
|
|
|
return ret
|
|
}
|
|
|
|
func (c *Cmd) prepare() {
|
|
if c.Env == nil {
|
|
c.Env = c.Environment.Environ()
|
|
}
|
|
if c.sandboxSupported() {
|
|
c.wrapSandbox()
|
|
}
|
|
|
|
c.ctx.Verboseln(c.Path, c.Args)
|
|
}
|
|
|
|
func (c *Cmd) teardown() {
|
|
close(c.doneChannel)
|
|
}
|
|
|
|
func (c *Cmd) Start() error {
|
|
c.prepare()
|
|
return c.Cmd.Start()
|
|
}
|
|
|
|
func (c *Cmd) Run() error {
|
|
c.prepare()
|
|
defer c.teardown()
|
|
err := c.Cmd.Run()
|
|
return err
|
|
}
|
|
|
|
func (c *Cmd) Output() ([]byte, error) {
|
|
c.prepare()
|
|
defer c.teardown()
|
|
bytes, err := c.Cmd.Output()
|
|
return bytes, err
|
|
}
|
|
|
|
func (c *Cmd) CombinedOutput() ([]byte, error) {
|
|
c.prepare()
|
|
defer c.teardown()
|
|
bytes, err := c.Cmd.CombinedOutput()
|
|
return bytes, err
|
|
}
|
|
|
|
// StartOrFatal is equivalent to Start, but handles the error with a call to ctx.Fatal
|
|
func (c *Cmd) StartOrFatal() {
|
|
if err := c.Start(); err != nil {
|
|
c.ctx.Fatalf("Failed to run %s: %v", c.name, err)
|
|
}
|
|
}
|
|
|
|
func (c *Cmd) reportError(err error) {
|
|
if err == nil {
|
|
return
|
|
}
|
|
if e, ok := err.(*exec.ExitError); ok {
|
|
c.ctx.Fatalf("%s failed with: %v", c.name, e.ProcessState.String())
|
|
} else {
|
|
c.ctx.Fatalf("Failed to run %s: %v", c.name, err)
|
|
}
|
|
}
|
|
|
|
// RunOrFatal is equivalent to Run, but handles the error with a call to ctx.Fatal
|
|
func (c *Cmd) RunOrFatal() {
|
|
c.reportError(c.Run())
|
|
}
|
|
|
|
// WaitOrFatal is equivalent to Wait, but handles the error with a call to ctx.Fatal
|
|
func (c *Cmd) WaitOrFatal() {
|
|
c.reportError(c.Wait())
|
|
}
|
|
|
|
// OutputOrFatal is equivalent to Output, but handles the error with a call to ctx.Fatal
|
|
func (c *Cmd) OutputOrFatal() []byte {
|
|
ret, err := c.Output()
|
|
c.reportError(err)
|
|
return ret
|
|
}
|
|
|
|
// CombinedOutputOrFatal is equivalent to CombinedOutput, but handles the error with
|
|
// a call to ctx.Fatal
|
|
func (c *Cmd) CombinedOutputOrFatal() []byte {
|
|
ret, err := c.CombinedOutput()
|
|
c.reportError(err)
|
|
return ret
|
|
}
|
|
|
|
// Done() tells whether this command has finished executing
|
|
func (c *Cmd) Done() bool {
|
|
select {
|
|
case <-c.doneChannel:
|
|
return true
|
|
default:
|
|
return false
|
|
}
|
|
}
|