libgo/go/runtime/rdebug.go

   1 // Copyright 2014 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 import _ "unsafe" // for go:linkname
   8
   9 // Define maxstacksize here for gccgo. For gc it is defined in
  10 // stack.go, but gccgo doesn't use that file. Or, for that matter,
  11 // maxstacksize.
  12 var maxstacksize uintptr = 1 << 20 // enough until runtime.main sets it for real
  13
  14 //go:linkname setMaxStack runtime_debug.setMaxStack
  15 func setMaxStack(in int) (out int) {
  16         out = int(maxstacksize)
  17         maxstacksize = uintptr(in)
  18         return out
  19 }
  20
  21 //go:linkname setPanicOnFault runtime_debug.setPanicOnFault
  22 func setPanicOnFault(new bool) (old bool) {
  23         _g_ := getg()
  24         old = _g_.paniconfault
  25         _g_.paniconfault = new
  26         return old
  27 }