Source file src/os/signal/signal_unix.go

     1	// Copyright 2012 The Go Authors. 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	// Defined by the runtime package.
    15	func signal_disable(uint32)
    16	func signal_enable(uint32)
    17	func signal_ignore(uint32)
    18	func signal_ignored(uint32) bool
    19	func signal_recv() uint32
    20	
    21	func loop() {
    22		for {
    23			process(syscall.Signal(signal_recv()))
    24		}
    25	}
    26	
    27	func init() {
    28		signal_enable(0) // first call - initialize
    29		go loop()
    30	}
    31	
    32	const (
    33		numSig = 65 // max across all systems
    34	)
    35	
    36	func signum(sig os.Signal) int {
    37		switch sig := sig.(type) {
    38		case syscall.Signal:
    39			i := int(sig)
    40			if i < 0 || i >= numSig {
    41				return -1
    42			}
    43			return i
    44		default:
    45			return -1
    46		}
    47	}
    48	
    49	func enableSignal(sig int) {
    50		signal_enable(uint32(sig))
    51	}
    52	
    53	func disableSignal(sig int) {
    54		signal_disable(uint32(sig))
    55	}
    56	
    57	func ignoreSignal(sig int) {
    58		signal_ignore(uint32(sig))
    59	}
    60	
    61	func signalIgnored(sig int) bool {
    62		return signal_ignored(uint32(sig))
    63	}
    64	

View as plain text