+# define cond_init(x) { *x = CreateEvent(0, FALSE, FALSE, 0); }
+# define cond_destroy(x) CloseHandle(*x)
+# define cond_signal(x) SetEvent(*x)
+# define cond_wait(x,y) { lock_release(y); WaitForSingleObject(*x, INFINITE); lock_grab(y); }
+# define cond_timedwait(x,y,z) { lock_release(y); WaitForSingleObject(*x,z); lock_grab(y); }