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Windows: use OVERLAPPED operations

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This commit is contained in:
Cristian Maglie
2017-01-20 02:37:06 +02:00
parent 69c094e3c7
commit ff9cf2b84b
2 changed files with 104 additions and 9 deletions
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70
syscall_windows.go
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@@ -15,12 +15,15 @@ var (
modadvapi32 = windows.NewLazySystemDLL("advapi32.dll")
modkernel32 = windows.NewLazySystemDLL("kernel32.dll")
procRegEnumValueW = modadvapi32.NewProc("RegEnumValueW")
procGetCommState = modkernel32.NewProc("GetCommState")
procSetCommState = modkernel32.NewProc("SetCommState")
procSetCommTimeouts = modkernel32.NewProc("SetCommTimeouts")
procEscapeCommFunction = modkernel32.NewProc("EscapeCommFunction")
procGetCommModemStatus = modkernel32.NewProc("GetCommModemStatus")
procRegEnumValueW = modadvapi32.NewProc("RegEnumValueW")
procGetCommState = modkernel32.NewProc("GetCommState")
procSetCommState = modkernel32.NewProc("SetCommState")
procSetCommTimeouts = modkernel32.NewProc("SetCommTimeouts")
procEscapeCommFunction = modkernel32.NewProc("EscapeCommFunction")
procGetCommModemStatus = modkernel32.NewProc("GetCommModemStatus")
procCreateEventW = modkernel32.NewProc("CreateEventW")
procResetEvent = modkernel32.NewProc("ResetEvent")
procGetOverlappedResult = modkernel32.NewProc("GetOverlappedResult")
)
func regEnumValue(key syscall.Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, class *uint16, value *uint16, valueLen *uint32) (regerrno error) {
@@ -78,3 +81,58 @@ func getCommModemStatus(handle syscall.Handle, bits *uint32) (res bool) {
res = r0 != 0
return
}
func createEvent(eventAttributes *uint32, manualReset bool, initialState bool, name *uint16) (handle syscall.Handle, err error) {
var _p0 uint32
if manualReset {
_p0 = 1
} else {
_p0 = 0
}
var _p1 uint32
if initialState {
_p1 = 1
} else {
_p1 = 0
}
r0, _, e1 := syscall.Syscall6(procCreateEventW.Addr(), 4, uintptr(unsafe.Pointer(eventAttributes)), uintptr(_p0), uintptr(_p1), uintptr(unsafe.Pointer(name)), 0, 0)
handle = syscall.Handle(r0)
if handle == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func resetEvent(handle syscall.Handle) (err error) {
r1, _, e1 := syscall.Syscall(procResetEvent.Addr(), 1, uintptr(handle), 0, 0)
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func getOverlappedResult(handle syscall.Handle, overlapEvent *syscall.Overlapped, n *uint32, wait bool) (err error) {
var _p0 uint32
if wait {
_p0 = 1
} else {
_p0 = 0
}
r1, _, e1 := syscall.Syscall6(procGetOverlappedResult.Addr(), 4, uintptr(handle), uintptr(unsafe.Pointer(overlapEvent)), uintptr(unsafe.Pointer(n)), uintptr(_p0), 0, 0)
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}