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go-zero/core/proc/signals.go

57 lines
913 B
Go

//go:build linux || darwin
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// +build linux darwin
package proc
import (
"os"
"os/signal"
"syscall"
"github.com/tal-tech/go-zero/core/logx"
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)
const timeFormat = "0102150405"
var done = make(chan struct{})
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func init() {
go func() {
var profiler Stopper
// https://golang.org/pkg/os/signal/#Notify
signals := make(chan os.Signal, 1)
signal.Notify(signals, syscall.SIGUSR1, syscall.SIGUSR2, syscall.SIGTERM)
for {
v := <-signals
switch v {
case syscall.SIGUSR1:
dumpGoroutines()
case syscall.SIGUSR2:
if profiler == nil {
profiler = StartProfile()
} else {
profiler.Stop()
profiler = nil
}
case syscall.SIGTERM:
select {
case <-done:
// already closed
default:
close(done)
}
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gracefulStop(signals)
default:
logx.Error("Got unregistered signal:", v)
}
}
}()
}
func Done() <-chan struct{} {
return done
}