windows: allow re-enabling priority boost
The Go runtime disables priority boosting because it interferes with the
scheduler timer threads in some cases. But some apps might want to
re-enable it for specific reasons, so this commit adds the function to
do so.
Change-Id: Ida68b9f2b188560b46c322197461dd06453329e2
Reviewed-on: https://go-review.googlesource.com/c/sys/+/191839
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
diff --git a/windows/syscall_windows.go b/windows/syscall_windows.go
index 452d441..33e7d45 100644
--- a/windows/syscall_windows.go
+++ b/windows/syscall_windows.go
@@ -269,6 +269,7 @@
//sys GenerateConsoleCtrlEvent(ctrlEvent uint32, processGroupID uint32) (err error)
//sys GetProcessId(process Handle) (id uint32, err error)
//sys OpenThread(desiredAccess uint32, inheritHandle bool, threadId uint32) (handle Handle, err error)
+//sys SetProcessPriorityBoost(process Handle, disable bool) (err error) = kernel32.SetProcessPriorityBoost
// Volume Management Functions
//sys DefineDosDevice(flags uint32, deviceName *uint16, targetPath *uint16) (err error) = DefineDosDeviceW
diff --git a/windows/zsyscall_windows.go b/windows/zsyscall_windows.go
index e5d62f3..0f600db 100644
--- a/windows/zsyscall_windows.go
+++ b/windows/zsyscall_windows.go
@@ -209,6 +209,7 @@
procGenerateConsoleCtrlEvent = modkernel32.NewProc("GenerateConsoleCtrlEvent")
procGetProcessId = modkernel32.NewProc("GetProcessId")
procOpenThread = modkernel32.NewProc("OpenThread")
+ procSetProcessPriorityBoost = modkernel32.NewProc("SetProcessPriorityBoost")
procDefineDosDeviceW = modkernel32.NewProc("DefineDosDeviceW")
procDeleteVolumeMountPointW = modkernel32.NewProc("DeleteVolumeMountPointW")
procFindFirstVolumeW = modkernel32.NewProc("FindFirstVolumeW")
@@ -2256,6 +2257,24 @@
return
}
+func SetProcessPriorityBoost(process Handle, disable bool) (err error) {
+ var _p0 uint32
+ if disable {
+ _p0 = 1
+ } else {
+ _p0 = 0
+ }
+ r1, _, e1 := syscall.Syscall(procSetProcessPriorityBoost.Addr(), 2, uintptr(process), uintptr(_p0), 0)
+ if r1 == 0 {
+ if e1 != 0 {
+ err = errnoErr(e1)
+ } else {
+ err = syscall.EINVAL
+ }
+ }
+ return
+}
+
func DefineDosDevice(flags uint32, deviceName *uint16, targetPath *uint16) (err error) {
r1, _, e1 := syscall.Syscall(procDefineDosDeviceW.Addr(), 3, uintptr(flags), uintptr(unsafe.Pointer(deviceName)), uintptr(unsafe.Pointer(targetPath)))
if r1 == 0 {
