github.com/searKing/golang/go@v1.2.74/os/signal/signal_unix.go (about)

     1  // Copyright 2020 The searKing Author. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // +build aix darwin dragonfly freebsd js,wasm linux nacl netbsd openbsd solaris windows
     6  
     7  package signal
     8  
     9  import (
    10  	"os"
    11  	"syscall"
    12  )
    13  
    14  const (
    15  	numSig = 65 // max across all systems
    16  )
    17  
    18  func Signum(sig os.Signal) int {
    19  	switch sig := sig.(type) {
    20  	case syscall.Signal:
    21  		i := int(sig)
    22  		if i < 0 || i >= numSig {
    23  			return -1
    24  		}
    25  		return i
    26  	default:
    27  		return -1
    28  	}
    29  }