github.com/geraldss/go/src@v0.0.0-20210511222824-ac7d0ebfc235/runtime/os_freebsd_amd64.go (about)

     1  // Copyright 2011 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  package runtime
     6  
     7  func cgoSigtramp()
     8  
     9  //go:nosplit
    10  //go:nowritebarrierrec
    11  func setsig(i uint32, fn uintptr) {
    12  	var sa sigactiont
    13  	sa.sa_flags = _SA_SIGINFO | _SA_ONSTACK | _SA_RESTART
    14  	sa.sa_mask = sigset_all
    15  	if fn == funcPC(sighandler) {
    16  		if iscgo {
    17  			fn = funcPC(cgoSigtramp)
    18  		} else {
    19  			fn = funcPC(sigtramp)
    20  		}
    21  	}
    22  	sa.sa_handler = fn
    23  	sigaction(i, &sa, nil)
    24  }