44 lines
771 B
Go
44 lines
771 B
Go
package main
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import (
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"os"
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"os/signal"
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"sync/atomic"
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)
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var exitWaiterCount int32
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var exitCalled chan int
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var exitWaiterChan chan int
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func init() {
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exitWaiterCount = 0
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exitWaiterChan = make(chan int)
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go setupCleanExitOnSignals()
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}
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func setupCleanExitOnSignals() {
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//wait to properly close the socket when we're exiting
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exitCode := 0
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sig := make(chan os.Signal, 1)
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signal.Notify(sig, os.Interrupt)
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defer signal.Stop(sig)
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select {
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case <-sig:
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case exitCode = <-exitCalled:
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}
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for c := atomic.AddInt32(&exitWaiterCount, -1); c >= 0; c = atomic.AddInt32(&exitWaiterCount, -1) {
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exitWaiterChan <- exitCode
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}
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}
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func Exit(exitCode int) {
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exitCalled <- exitCode
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}
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func WaitOnExit() int {
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atomic.AddInt32(&exitWaiterCount, 1)
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return <-exitWaiterChan
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}
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