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Source file src/runtime/os_linux_generic.go

  // Copyright 2009 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  // +build !mips
  // +build !mipsle
  // +build !mips64
  // +build !mips64le
  // +build !s390x
  // +build !ppc64
  // +build linux
  
  package runtime
  
  const (
  	_SS_DISABLE  = 2
  	_NSIG        = 65
  	_SI_USER     = 0
  	_SIG_BLOCK   = 0
  	_SIG_UNBLOCK = 1
  	_SIG_SETMASK = 2
  	_RLIMIT_AS   = 9
  )
  
  // It's hard to tease out exactly how big a Sigset is, but
  // rt_sigprocmask crashes if we get it wrong, so if binaries
  // are running, this is right.
  type sigset [2]uint32
  
  type rlimit struct {
  	rlim_cur uintptr
  	rlim_max uintptr
  }
  
  var sigset_all = sigset{^uint32(0), ^uint32(0)}
  
  //go:nosplit
  //go:nowritebarrierrec
  func sigaddset(mask *sigset, i int) {
  	(*mask)[(i-1)/32] |= 1 << ((uint32(i) - 1) & 31)
  }
  
  func sigdelset(mask *sigset, i int) {
  	(*mask)[(i-1)/32] &^= 1 << ((uint32(i) - 1) & 31)
  }
  
  func sigfillset(mask *uint64) {
  	*mask = ^uint64(0)
  }
  

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