func (m *Mutex) lock() {
state := atomic.LoadUintptr(&m.state)
if state == 0 {
state = uintptr(noos.AssignEventFlag())
if !atomic.CompareAndSwapUintptr(&m.state, 0, state) {
state = m.state
}
}
unlocked, locked := state&^1, state|1
for {
if atomic.CompareAndSwapUintptr(&m.state, unlocked, locked) {
return
}
noos.Event(unlocked).Wait()
}
}
func (c *copyChecker) check() {
if uintptr(*c) != uintptr(unsafe.Pointer(c)) &&
!atomic.CompareAndSwapUintptr((*uintptr)(c), 0, uintptr(unsafe.Pointer(c))) &&
uintptr(*c) != uintptr(unsafe.Pointer(c)) {
panic("sync.Cond is copied")
}
}
func (c *copyChecker) check() {
if uintptr(*c) != uintptr(unsafe.Pointer(c)) &&
!atomic.CompareAndSwapUintptr((*uintptr)(c), 0, uintptr(unsafe.Pointer(c))) &&
uintptr(*c) != uintptr(unsafe.Pointer(c)) { // 如果c不指向自身了，或者c本身为空(初始化的情况，这时给c赋值)，
panic("sync.Cond is copied") // 如果初始化失败，或者不指向自身了，panic
}
}
func (daemon *tdOutputSpoolerDaemon) cleanup() {
func() {
daemon.spoolersMtx.Lock()
defer daemon.spoolersMtx.Unlock()
for _, spooler := range daemon.spoolers {
if atomic.CompareAndSwapUintptr(&spooler.isShuttingDown, 0, 1) {
spooler.shutdownChan <- struct{}{}
}
}
}()
daemon.wg.Wait()
if daemon.endNotify != nil {
daemon.endNotify(daemon)
}
daemon.output.wg.Done()
}
func CompareAndSwapUintptr(addr *uintptr, old, new uintptr) bool {
return orig.CompareAndSwapUintptr(addr, old, new)
}
func (output *TDOutput) Stop() {
if atomic.CompareAndSwapUintptr(&output.isShuttingDown, 0, 1) {
close(output.emitterChan)
}
}
func (input *ForwardInput) Stop() {
if atomic.CompareAndSwapUintptr(&input.isShuttingDown, uintptr(0), uintptr(1)) {
input.shutdownChan <- struct{}{}
}
}
func (p *startedChecker) start() {
if uintptr(*p) == startedCheckerInitialValue {
atomic.CompareAndSwapUintptr((*uintptr)(p), startedCheckerInitialValue, startedCheckerStartedValue)
}
}