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moby--moby/daemon/debugtrap_unix.go

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// +build !windows
package daemon
import (
"os"
"os/signal"
"github.com/Sirupsen/logrus"
stackdump "github.com/docker/docker/pkg/signal"
"golang.org/x/sys/unix"
)
func (d *Daemon) setupDumpStackTrap(root string) {
c := make(chan os.Signal, 1)
signal.Notify(c, unix.SIGUSR1)
go func() {
for range c {
path, err := stackdump.DumpStacks(root)
if err != nil {
logrus.WithError(err).Error("failed to write goroutines dump")
} else {
logrus.Infof("goroutine stacks written to %s", path)
}
}
}()
}