1 // Copyright 2017 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 // +build linux 6 7 package main 8 9 import ( 10 "bytes" 11 "fmt" 12 "io/ioutil" 13 "os" 14 "syscall" 15 ) 16 17 func gettid() int { 18 return syscall.Gettid() 19 } 20 21 func tidExists(tid int) (exists, supported bool) { 22 stat, err := ioutil.ReadFile(fmt.Sprintf("/proc/self/task/%d/stat", tid)) 23 if os.IsNotExist(err) { 24 return false, true 25 } 26 // Check if it's a zombie thread. 27 state := bytes.Fields(stat)[2] 28 return !(len(state) == 1 && state[0] == 'Z'), true 29 } 30
