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46 lines
781 B
46 lines
781 B
package oz
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import (
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"syscall"
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"github.com/op/go-logging"
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"os"
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"os/signal"
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)
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func ReapChildProcs(log *logging.Logger, callback func(int, syscall.WaitStatus)) chan os.Signal {
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sigs := make(chan os.Signal, 3)
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signal.Notify(sigs, syscall.SIGCHLD)
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go func() {
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for {
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<-sigs
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handleSIGCHLD(log, callback)
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}
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}()
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return sigs
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}
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func handleSIGCHLD(log *logging.Logger, callback func(int, syscall.WaitStatus)) {
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var wstatus syscall.WaitStatus
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for {
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pid,err := syscall.Wait4(-1, &wstatus, syscall.WNOHANG, nil)
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switch err {
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case syscall.ECHILD:
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return
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case syscall.EINTR:
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case nil:
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if pid == 0 {
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return
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}
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callback(pid, wstatus)
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default:
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if log != nil {
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log.Warning("syscall.Wait4() returned error: %v", err)
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}
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return
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}
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}
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}
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