gotosocial/vendor/modernc.org/libc/nopthreads.go

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// Copyright 2021 The Libc Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build windows || darwin || (linux && arm) || (linux && s390x) || (linux && 386) || (linux && arm) || (linux && arm64) || (freebsd && amd64)
// +build windows darwin linux,arm linux,s390x linux,386 linux,arm linux,arm64 freebsd,amd64
package libc // import "modernc.org/libc"
import (
"sync/atomic"
"unsafe"
)
var errno0 int32 // Temp errno for NewTLS
type TLS struct {
ID int32
errnop uintptr
reentryGuard int32 // memgrind
stack stackHeader
stackHeaderBalance int32
}
func NewTLS() *TLS {
id := atomic.AddInt32(&tid, 1)
t := &TLS{ID: id, errnop: uintptr(unsafe.Pointer(&errno0))}
if memgrind {
atomic.AddInt32(&tlsBalance, 1)
}
t.errnop = t.Alloc(int(unsafe.Sizeof(int32(0))))
*(*int32)(unsafe.Pointer(t.errnop)) = 0
return t
}