31 lines
715 B
Go
31 lines
715 B
Go
//go:build windows
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// Package processalive probes whether an operating-system process id still
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// maps to a live process.
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package processalive
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import (
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"errors"
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"golang.org/x/sys/windows"
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)
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// Alive reports whether pid exists. Access denied counts as alive: the process
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// exists even if the current user cannot wait on it.
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func Alive(pid int) bool {
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if pid <= 0 {
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return false
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}
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handle, err := windows.OpenProcess(windows.SYNCHRONIZE, false, uint32(pid))
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if err != nil {
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return errors.Is(err, windows.ERROR_ACCESS_DENIED)
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}
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defer windows.CloseHandle(handle)
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status, err := windows.WaitForSingleObject(handle, 0)
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if err != nil {
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return false
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}
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return status == uint32(windows.WAIT_TIMEOUT)
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}
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