windows: add functions for priority class
took const value from
https://docs.microsoft.com/en-us/windows/desktop/api/processthreadsapi/nf-processthreadsapi-setpriorityclass
https://docs.microsoft.com/en-us/windows/desktop/api/processthreadsapi/nf-processthreadsapi-getpriorityclass
Change-Id: I376bb8e1f5de8968177512857d60169cb7b7c776
Reviewed-on: https://go-review.googlesource.com/c/sys/+/179038
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
diff --git a/windows/syscall_windows.go b/windows/syscall_windows.go
index eace609..14dafa9 100644
--- a/windows/syscall_windows.go
+++ b/windows/syscall_windows.go
@@ -258,6 +258,8 @@
//sys TerminateJobObject(job Handle, exitCode uint32) (err error) = kernel32.TerminateJobObject
//sys SetErrorMode(mode uint32) (ret uint32) = kernel32.SetErrorMode
//sys ResumeThread(thread Handle) (ret uint32, err error) [failretval==0xffffffff] = kernel32.ResumeThread
+//sys SetPriorityClass(process Handle, priorityClass uint32) (err error) = kernel32.SetPriorityClass
+//sys GetPriorityClass(process Handle) (ret uint32, err error) = kernel32.GetPriorityClass
// Volume Management Functions
//sys DefineDosDevice(flags uint32, deviceName *uint16, targetPath *uint16) (err error) = DefineDosDeviceW
diff --git a/windows/types_windows.go b/windows/types_windows.go
index 0661a49..611b035 100644
--- a/windows/types_windows.go
+++ b/windows/types_windows.go
@@ -408,6 +408,18 @@
SEM_NOOPENFILEERRORBOX = 0x8000
)
+const (
+ // Priority class.
+ ABOVE_NORMAL_PRIORITY_CLASS = 0x00008000
+ BELOW_NORMAL_PRIORITY_CLASS = 0x00004000
+ HIGH_PRIORITY_CLASS = 0x00000080
+ IDLE_PRIORITY_CLASS = 0x00000040
+ NORMAL_PRIORITY_CLASS = 0x00000020
+ PROCESS_MODE_BACKGROUND_BEGIN = 0x00100000
+ PROCESS_MODE_BACKGROUND_END = 0x00200000
+ REALTIME_PRIORITY_CLASS = 0x00000100
+)
+
var (
OID_PKIX_KP_SERVER_AUTH = []byte("1.3.6.1.5.5.7.3.1\x00")
OID_SERVER_GATED_CRYPTO = []byte("1.3.6.1.4.1.311.10.3.3\x00")
diff --git a/windows/zsyscall_windows.go b/windows/zsyscall_windows.go
index 9d5a3bc..b975889 100644
--- a/windows/zsyscall_windows.go
+++ b/windows/zsyscall_windows.go
@@ -196,6 +196,8 @@
procTerminateJobObject = modkernel32.NewProc("TerminateJobObject")
procSetErrorMode = modkernel32.NewProc("SetErrorMode")
procResumeThread = modkernel32.NewProc("ResumeThread")
+ procSetPriorityClass = modkernel32.NewProc("SetPriorityClass")
+ procGetPriorityClass = modkernel32.NewProc("GetPriorityClass")
procDefineDosDeviceW = modkernel32.NewProc("DefineDosDeviceW")
procDeleteVolumeMountPointW = modkernel32.NewProc("DeleteVolumeMountPointW")
procFindFirstVolumeW = modkernel32.NewProc("FindFirstVolumeW")
@@ -2105,6 +2107,31 @@
return
}
+func SetPriorityClass(process Handle, priorityClass uint32) (err error) {
+ r1, _, e1 := syscall.Syscall(procSetPriorityClass.Addr(), 2, uintptr(process), uintptr(priorityClass), 0)
+ if r1 == 0 {
+ if e1 != 0 {
+ err = errnoErr(e1)
+ } else {
+ err = syscall.EINVAL
+ }
+ }
+ return
+}
+
+func GetPriorityClass(process Handle) (ret uint32, err error) {
+ r0, _, e1 := syscall.Syscall(procGetPriorityClass.Addr(), 1, uintptr(process), 0, 0)
+ ret = uint32(r0)
+ if ret == 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 {