ocr: $130 GUST 1.10 Tielerence TESOURCES 17 130. void beupy(void *from. void *lo, int len) copies ten byles from frrnt 1o tu. 131. int bemp(void *s7, void *S2. int len ) compares len bytes at st against len bytes at 82, Teturning zero if the two areas are equal. nonzero otherwise. 132. Blocking calls. Since the Macintosh doesni t have preemptive task switching, it is important that orher applications gehadiancr 10 run during blocking calls. This section discusses the mechanisin GUSI uses for that purpose. 133. Whilear routine is waiting for al blocking call 1o Lerminale, it repeatedly calls a spin ...
