syncthing/lib/osutil/lowprio_windows.go
Jakob Borg b10d106a55
all: Modernize error wrapping (#8491)
This replaces old style errors.Wrap with modern fmt.Errorf and removes
the (direct) dependency on github.com/pkg/errors. A couple of cases are
adjusted by hand as previously errors.Wrap(nil, ...) would return nil,
which is not what fmt.Errorf does.
2022-08-16 10:01:49 +02:00

29 lines
785 B
Go

// Copyright (C) 2018 The Syncthing Authors.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at https://mozilla.org/MPL/2.0/.
package osutil
import (
"fmt"
"golang.org/x/sys/windows"
)
// SetLowPriority lowers the process CPU scheduling priority, and possibly
// I/O priority depending on the platform and OS.
func SetLowPriority() error {
handle, err := windows.GetCurrentProcess()
if err != nil {
return fmt.Errorf("get process handle: %w", err)
}
defer windows.CloseHandle(handle)
if err := windows.SetPriorityClass(handle, windows.BELOW_NORMAL_PRIORITY_CLASS); err != nil {
return fmt.Errorf("set priority class: %w", err)
}
return nil
}