342   ThreadState *fiber = static_cast<ThreadState *>(mem);  in FiberCreate()  local
343   internal_memset(fiber, 0, sizeof(*fiber));  in FiberCreate()
345   FiberSwitchImpl(thr, fiber);  in FiberCreate()
346   ThreadStart(fiber, tid, 0, ThreadType::Fiber);  in FiberCreate()
347   FiberSwitchImpl(fiber, thr);  in FiberCreate()
348   return fiber;  in FiberCreate()
351 void FiberDestroy(ThreadState *thr, uptr pc, ThreadState *fiber) {  in FiberDestroy()  argument
352   FiberSwitchImpl(thr, fiber);  in FiberDestroy()
353   ThreadFinish(fiber);  in FiberDestroy()
354   FiberSwitchImpl(fiber, thr);  in FiberDestroy()
355   Free(fiber);  in FiberDestroy()
359                  ThreadState *fiber, unsigned flags) {  in FiberSwitch()  argument
361     Release(thr, pc, (uptr)fiber);  in FiberSwitch()
362   FiberSwitchImpl(thr, fiber);  in FiberSwitch()
364     Acquire(fiber, pc, (uptr)fiber);  in FiberSwitch()