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// 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 (
"fmt"
"os"
"path/filepath"
"strconv"
"strings"
"time"
)
func runNinja(ctx Context, config Config) {
ctx.BeginTrace("ninja")
defer ctx.EndTrace()
executable := config.PrebuiltBuildTool("ninja")
args := []string{
"-d", "keepdepfile",
}
args = append(args, config.NinjaArgs()...)
var parallel int
if config.UseGoma() {
parallel = config.RemoteParallel()
} else {
parallel = config.Parallel()
}
args = append(args, "-j", strconv.Itoa(parallel))
if config.keepGoing != 1 {
args = append(args, "-k", strconv.Itoa(config.keepGoing))
}
args = append(args, "-f", config.CombinedNinjaFile())
if config.IsVerbose() {
args = append(args, "-v")
}
args = append(args, "-w", "dupbuild=err")
cmd := Command(ctx, config, "ninja", executable, args...)
cmd.Environment.AppendFromKati(config.KatiEnvFile())
// Allow both NINJA_ARGS and NINJA_EXTRA_ARGS, since both have been
// used in the past to specify extra ninja arguments.
if extra, ok := cmd.Environment.Get("NINJA_ARGS"); ok {
cmd.Args = append(cmd.Args, strings.Fields(extra)...)
}
if extra, ok := cmd.Environment.Get("NINJA_EXTRA_ARGS"); ok {
cmd.Args = append(cmd.Args, strings.Fields(extra)...)
}
if _, ok := cmd.Environment.Get("NINJA_STATUS"); !ok {
cmd.Environment.Set("NINJA_STATUS", "[%p %f/%t] ")
}
cmd.Stdin = ctx.Stdin()
cmd.Stdout = ctx.Stdout()
cmd.Stderr = ctx.Stderr()
logPath := filepath.Join(config.OutDir(), ".ninja_log")
ninjaHeartbeatDuration := time.Minute * 5
if overrideText, ok := cmd.Environment.Get("NINJA_HEARTBEAT_INTERVAL"); ok {
// For example, "1m"
overrideDuration, err := time.ParseDuration(overrideText)
if err == nil && overrideDuration.Seconds() > 0 {
ninjaHeartbeatDuration = overrideDuration
}
}
// Poll the ninja log for updates; if it isn't updated enough, then we want to show some diagnostics
done := make(chan struct{})
defer close(done)
ticker := time.NewTicker(ninjaHeartbeatDuration)
defer ticker.Stop()
checker := &statusChecker{}
go func() {
for {
select {
case <-ticker.C:
checker.check(ctx, config, logPath)
case <-done:
return
}
}
}()
startTime := time.Now()
defer ctx.ImportNinjaLog(logPath, startTime)
cmd.RunOrFatal()
}
type statusChecker struct {
prevTime time.Time
}
func (c *statusChecker) check(ctx Context, config Config, pathToCheck string) {
info, err := os.Stat(pathToCheck)
var newTime time.Time
if err == nil {
newTime = info.ModTime()
}
if newTime == c.prevTime {
// ninja may be stuck
dumpStucknessDiagnostics(ctx, config, pathToCheck, newTime)
}
c.prevTime = newTime
}
// dumpStucknessDiagnostics gets called when it is suspected that Ninja is stuck and we want to output some diagnostics
func dumpStucknessDiagnostics(ctx Context, config Config, statusPath string, lastUpdated time.Time) {
ctx.Verbosef("ninja may be stuck; last update to %v was %v. dumping process tree...", statusPath, lastUpdated)
// The "pstree" command doesn't exist on Mac, but "pstree" on Linux gives more convenient output than "ps"
// So, we try pstree first, and ps second
pstreeCommandText := fmt.Sprintf("pstree -pal %v", os.Getpid())
psCommandText := "ps -ef"
commandText := pstreeCommandText + " || " + psCommandText
cmd := Command(ctx, config, "dump process tree", "bash", "-c", commandText)
output := cmd.CombinedOutputOrFatal()
ctx.Verbose(string(output))
ctx.Verbosef("done\n")
}
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