323   ThreadState *fiber = static_cast<ThreadState *>(mem);  in FiberCreate()  local
324   internal_memset(fiber, 0, sizeof(*fiber));  in FiberCreate()
326   FiberSwitchImpl(thr, fiber);  in FiberCreate()
327   ThreadStart(fiber, tid, 0, ThreadType::Fiber);  in FiberCreate()
328   FiberSwitchImpl(fiber, thr);  in FiberCreate()
329   return fiber;  in FiberCreate()
332 void FiberDestroy(ThreadState *thr, uptr pc, ThreadState *fiber) {  in FiberDestroy()  argument
333   FiberSwitchImpl(thr, fiber);  in FiberDestroy()
334   ThreadFinish(fiber);  in FiberDestroy()
335   FiberSwitchImpl(fiber, thr);  in FiberDestroy()
336   Free(fiber);  in FiberDestroy()
340                  ThreadState *fiber, unsigned flags) {  in FiberSwitch()  argument
342     Release(thr, pc, (uptr)fiber);  in FiberSwitch()
343   FiberSwitchImpl(thr, fiber);  in FiberSwitch()
345     Acquire(fiber, pc, (uptr)fiber);  in FiberSwitch()