70 lines
2.1 KiB
Go
70 lines
2.1 KiB
Go
package executor
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"syscall"
|
|
)
|
|
|
|
// configure new process group for child process
|
|
func (e *UniversalExecutor) setNewProcessGroup() error {
|
|
// We need to check that as build flags includes windows for this file
|
|
if e.cmd.SysProcAttr == nil {
|
|
e.cmd.SysProcAttr = &syscall.SysProcAttr{}
|
|
}
|
|
e.cmd.SysProcAttr.CreationFlags = syscall.CREATE_NEW_PROCESS_GROUP
|
|
return nil
|
|
}
|
|
|
|
// Cleanup any still hanging user processes
|
|
func (e *UniversalExecutor) cleanupChildProcesses(proc *os.Process) error {
|
|
// We must first verify if the process is still running.
|
|
// (Windows process often lingered around after being reported as killed).
|
|
handle, err := syscall.OpenProcess(syscall.PROCESS_TERMINATE|syscall.SYNCHRONIZE|syscall.PROCESS_QUERY_INFORMATION, false, uint32(proc.Pid))
|
|
if err != nil {
|
|
return os.NewSyscallError("OpenProcess", err)
|
|
}
|
|
defer syscall.CloseHandle(handle)
|
|
|
|
result, err := syscall.WaitForSingleObject(syscall.Handle(handle), 0)
|
|
|
|
switch result {
|
|
case syscall.WAIT_OBJECT_0:
|
|
return nil
|
|
case syscall.WAIT_TIMEOUT:
|
|
// Process still running. Just kill it.
|
|
return proc.Kill()
|
|
default:
|
|
return os.NewSyscallError("WaitForSingleObject", err)
|
|
}
|
|
}
|
|
|
|
// Send a Ctrl-Break signal for shutting down the process,
|
|
// like in https://golang.org/src/os/signal/signal_windows_test.go
|
|
func sendCtrlBreak(pid int) error {
|
|
dll, err := syscall.LoadDLL("kernel32.dll")
|
|
if err != nil {
|
|
return fmt.Errorf("Error loading kernel32.dll: %v", err)
|
|
}
|
|
proc, err := dll.FindProc("GenerateConsoleCtrlEvent")
|
|
if err != nil {
|
|
return fmt.Errorf("Cannot find procedure GenerateConsoleCtrlEvent: %v", err)
|
|
}
|
|
result, _, err := proc.Call(syscall.CTRL_BREAK_EVENT, uintptr(pid))
|
|
if result == 0 {
|
|
return fmt.Errorf("Error sending ctrl-break event: %v", err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Send the process a Ctrl-Break event, allowing it to shutdown by itself
|
|
// before being Terminate.
|
|
func (e *UniversalExecutor) shutdownProcess(proc *os.Process) error {
|
|
if err := sendCtrlBreak(proc.Pid); err != nil {
|
|
return fmt.Errorf("executor.shutdown error: %v", err)
|
|
}
|
|
e.logger.Printf("[INFO] executor: sent Ctrl-Break to process %v", proc.Pid)
|
|
|
|
return nil
|
|
}
|