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moby--moby/daemon/debugtrap_windows.go

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package daemon
import (
"fmt"
"os"
"syscall"
"github.com/Sirupsen/logrus"
"github.com/docker/docker/pkg/signal"
"github.com/docker/docker/pkg/system"
)
func setupDumpStackTrap() {
// Windows does not support signals like *nix systems. So instead of
// trapping on SIGUSR1 to dump stacks, we wait on a Win32 event to be
// signaled.
go func() {
sa := syscall.SecurityAttributes{
Length: 0,
}
ev := "Global\\docker-daemon-" + fmt.Sprint(os.Getpid())
if h, _ := system.CreateEvent(&sa, false, false, ev); h != 0 {
logrus.Debugf("Stackdump - waiting signal at %s", ev)
for {
syscall.WaitForSingleObject(h, syscall.INFINITE)
signal.DumpStacks()
}
}
}()
}