12 typedef struct Thread Thread;  typedef
14 struct Thread {  struct
19 	Thread *next;  argument
24 	Thread *writer;		/* thread writering write lock */
26 	Thread *qfirst;
27 	Thread *qlast;
33 	Thread *wfirst;
34 	Thread *wlast;
41 static Thread **vtRock;
44 static void	threadSleep(Thread*);
45 static void	threadWakeup(Thread*);
69 static Thread *
79 	Thread *p;  in vtAttach()
97 	p = vtMemAllocZ(sizeof(Thread));  in vtAttach()
106 	Thread *p;  in vtDetach()
134 	Thread *p;  in vtSetError()
222 	Thread *t;  in vtCanLock()
239 	Thread *t;  in vtLock()
284 	Thread *t;  in vtRLock()
314 	Thread *t, *tt;  in vtUnlock()
353 	Thread *t;  in vtRUnlock()
375 	Thread *s, *t, *tt;  in vtSleep()
420 	Thread *t;  in vtWakeup()
461 threadSleep(Thread *t)  in threadSleep()
468 threadWakeup(Thread *t)  in threadWakeup()