golang stack 代码
文件路径：/src/cmd/internal/objabi/stack.go
/ Copyright 2011 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.
package objabi
import "internal/buildcfg"
/ For the linkers. Must match Go definitions.
const (
STACKSYSTEM = 0
StackSystem = STACKSYSTEM
StackBig = 4096
StackSmall = 128
)
/ Initialize StackGuard and StackLimit according to target system.
var StackGuard = 928*stackGuardMultiplier() + StackSystem
var StackLimit = StackGuard - StackSystem - StackSmall
/ stackGuardMultiplier returns a multiplier to apply to the default
/ stack guard size. Larger multipliers are used for non-optimized
/ builds that have larger stack frames or for specific targets.
func stackGuardMultiplier() int {
/ On AIX, a larger stack is needed for syscalls.
if buildcfg.GOOS == "aix" {
return 2
}
return stackGuardMultiplierDefault
}