1311void * thread2(void * arg)
1312{
1313 pthread_mutex_lock(&ma);
1314 data1+=5;
1315 pthread_mutex_unlock(&ma);
1316
1317 pthread_mutex_lock(&ma);
1318 data2-=6;
1319 pthread_mutex_unlock(&ma);
1320}
1321
1322
1323int main()
1324{
1325 pthread_t t1, t2;
1326
1327 pthread_mutex_init(&ma, 0);
1328 pthread_mutex_init(&mb, 0);
1329
1330 data1 = 10;
1331 data2 = 10;
1332
1333 pthread_create(&t1, 0, thread1, 0);
1334 pthread_create(&t2, 0, thread2, 0);
1335
1336 pthread_join(t1, 0);
1337 pthread_join(t2, 0);
1338
1339 if (data1!=16 && data2!=5)
1340 {
1341 ERROR: goto ERROR;
1342 ;
1343 }
1344
1345 return 0;
1346}