39 lines
724 B
Go
39 lines
724 B
Go
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//go:build windows
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package mutex
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import (
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"fmt"
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"golang.org/x/sys/windows"
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)
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func Acquire(name string) (func(), bool, error) {
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if name == "" {
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return func() {}, true, nil
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}
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sanitized, err := sanitizeName(name)
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if err != nil {
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return nil, false, err
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}
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fullName := "Global\\Overlord-" + sanitized
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handle, err := windows.CreateMutex(nil, false, windows.StringToUTF16Ptr(fullName))
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if err != nil {
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return nil, false, fmt.Errorf("create mutex: %w", err)
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}
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if windows.GetLastError() == windows.ERROR_ALREADY_EXISTS {
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windows.CloseHandle(handle)
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return func() {}, false, nil
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}
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release := func() {
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_ = windows.ReleaseMutex(handle)
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_ = windows.CloseHandle(handle)
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}
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return release, true, nil
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}
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