zsyscall_windows.go

// Code generated by 'go generate'; DO NOT EDIT.

package serial

import (
	"syscall"
	"unsafe"

	"golang.org/x/sys/windows"
)

var _ unsafe.Pointer

// Do the interface allocations only once for common
// Errno values.
const (
	errnoERROR_IO_PENDING = 997
)

var (
	errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
	errERROR_EINVAL     error = syscall.EINVAL
)

// errnoErr returns common boxed Errno values, to prevent
// allocations at runtime.
func errnoErr(e syscall.Errno) error {
	switch e {
	case 0:
		return errERROR_EINVAL
	case errnoERROR_IO_PENDING:
		return errERROR_IO_PENDING
	}
	// TODO: add more here, after collecting data on the common
	// error values see on Windows. (perhaps when running
	// all.bat?)
	return e
}

var (
	modkernel32 = windows.NewLazySystemDLL("kernel32.dll")

	procGetCommState    = modkernel32.NewProc("GetCommState")
	procGetCommTimeouts = modkernel32.NewProc("GetCommTimeouts")
	procSetCommState    = modkernel32.NewProc("SetCommState")
	procSetCommTimeouts = modkernel32.NewProc("SetCommTimeouts")
)

func GetCommState(handle syscall.Handle, dcb *c_DCB) (err error) {
	r1, _, e1 := syscall.Syscall(procGetCommState.Addr(), 2, uintptr(handle), uintptr(unsafe.Pointer(dcb)), 0)
	if r1 == 0 {
		err = errnoErr(e1)
	}
	return
}

func GetCommTimeouts(handle syscall.Handle, timeouts *c_COMMTIMEOUTS) (err error) {
	r1, _, e1 := syscall.Syscall(procGetCommTimeouts.Addr(), 2, uintptr(handle), uintptr(unsafe.Pointer(timeouts)), 0)
	if r1 == 0 {
		err = errnoErr(e1)
	}
	return
}

func SetCommState(handle syscall.Handle, dcb *c_DCB) (err error) {
	r1, _, e1 := syscall.Syscall(procSetCommState.Addr(), 2, uintptr(handle), uintptr(unsafe.Pointer(dcb)), 0)
	if r1 == 0 {
		err = errnoErr(e1)
	}
	return
}

func SetCommTimeouts(handle syscall.Handle, timeouts *c_COMMTIMEOUTS) (err error) {
	r1, _, e1 := syscall.Syscall(procSetCommTimeouts.Addr(), 2, uintptr(handle), uintptr(unsafe.Pointer(timeouts)), 0)
	if r1 == 0 {
		err = errnoErr(e1)
	}
	return
}