blob: 193b2c2d40dabdf6c836ee876d0d569371aafd3d [file] [log] [blame]
// Copyright 2020 The gVisor Authors.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
// +build go1.12
// +build !go1.18
// Check type signatures when updating Go version.
// Package goid provides the Get function.
package goid
// Get returns the ID of the current goroutine.
func Get() int64 {
return getg().goid
// Structs from Go runtime. These may change in the future and require
// updating. These structs are currently the same on both AMD64 and ARM64,
// but may diverge in the future.
type stack struct {
lo uintptr
hi uintptr
type gobuf struct {
sp uintptr
pc uintptr
g uintptr
ctxt uintptr
ret uint64
lr uintptr
bp uintptr
type g struct {
stack stack
stackguard0 uintptr
stackguard1 uintptr
_panic uintptr
_defer uintptr
m uintptr
sched gobuf
syscallsp uintptr
syscallpc uintptr
stktopsp uintptr
param uintptr
atomicstatus uint32
stackLock uint32
goid int64
// More fields...
// We only use goid and the fields before it are only listed to
// calculate the correct offset.
// Defined in assembly. This can't use go:linkname since runtime.getg() isn't a
// real function, it's a compiler intrinsic.
func getg() *g