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runtime: ignore error returned by PowerRegisterSuspendResumeNotification #1

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merged 1 commit into from
Mar 21, 2020
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runtime: ignore error returned by PowerRegisterSuspendResumeNotification #1

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23 changes: 2 additions & 21 deletions src/runtime/os_windows.go
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Original file line number Diff line number Diff line change
Expand Up @@ -294,9 +294,7 @@ func loadOptionalSyscalls() {

func monitorSuspendResume() {
const (
_DEVICE_NOTIFY_CALLBACK = 2
_ERROR_FILE_NOT_FOUND = 2
_ERROR_INVALID_PARAMETERS = 87
_DEVICE_NOTIFY_CALLBACK = 2
)
type _DEVICE_NOTIFY_SUBSCRIBE_PARAMETERS struct {
callback uintptr
Expand All @@ -323,25 +321,8 @@ func monitorSuspendResume() {
callback: compileCallback(*efaceOf(&fn), true),
}
handle := uintptr(0)
ret := stdcall3(powerRegisterSuspendResumeNotification, _DEVICE_NOTIFY_CALLBACK,
stdcall3(powerRegisterSuspendResumeNotification, _DEVICE_NOTIFY_CALLBACK,
uintptr(unsafe.Pointer(&params)), uintptr(unsafe.Pointer(&handle)))
// This function doesn't use GetLastError(), so we use the return value directly.
switch ret {
case 0:
return // Successful, nothing more to do.
case _ERROR_FILE_NOT_FOUND:
// Systems without access to the suspend/resume notifier
// also have their clock on "program time", and therefore
// don't want or need this anyway.
return
case _ERROR_INVALID_PARAMETERS:
// This is seen when running in Windows Docker.
// See issue 36557.
return
default:
println("runtime: PowerRegisterSuspendResumeNotification failed with errno=", ret)
throw("runtime: PowerRegisterSuspendResumeNotification failure")
}
}

//go:nosplit
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