os_linux_generic.go

     1  // Copyright 2009 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  //go:build !mips && !mipsle && !mips64 && !mips64le && !s390x && !ppc64 && linux
     6  
     7  package runtime
     8  
     9  const (
    10  	_SS_DISABLE  = 2
    11  	_NSIG        = 65
    12  	_SI_USER     = 0
    13  	_SIG_BLOCK   = 0
    14  	_SIG_UNBLOCK = 1
    15  	_SIG_SETMASK = 2
    16  )
    17  
    18  // It's hard to tease out exactly how big a Sigset is, but
    19  // rt_sigprocmask crashes if we get it wrong, so if binaries
    20  // are running, this is right.
    21  type sigset [2]uint32
    22  
    23  var sigset_all = sigset{^uint32(0), ^uint32(0)}
    24  
    25  //go:nosplit
    26  //go:nowritebarrierrec
    27  func sigaddset(mask *sigset, i int) {
    28  	(*mask)[(i-1)/32] |= 1 << ((uint32(i) - 1) & 31)
    29  }
    30  
    31  func sigdelset(mask *sigset, i int) {
    32  	(*mask)[(i-1)/32] &^= 1 << ((uint32(i) - 1) & 31)
    33  }
    34  
    35  //go:nosplit
    36  func sigfillset(mask *uint64) {
    37  	*mask = ^uint64(0)
    38  }
    39
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