Readers-Writers Problem (Cont.)

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[ Questions or Comments ] Lecture 6: Slide 34 of 61

Readers-Writers Problem (Cont.)

Reader process

 wait (mutex);
 readcount = readcount + 1;
 if (readcount ==1)
   wait (wrt);
 signal (mutex);
 reading is performed
 wait(mutex);
 readcount = readcount - 1;
 if (readcount == 0)
   signal (wrt);
 signal (mutex);

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