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Pisar-ctenar

Quiz by
Hralyb
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Last updated: May 14, 2025
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First submittedMay 14, 2025
Times taken8
Average score100.0%
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Hint
Answer
init
int readcount = 0;
 
semaphore mutex, wrt;
 
init(mutex,1);
 
init(wrt, 1);
pisar
do{
 
lock(wrt);
 
unlock(wrt);
 
}while(1);
ctenar
do{
 
lock(mutex);
Hint
Answer
 
readcount++;
 
if(readcount == 1)
 
lock(wrt);
 
unlock(mutex);
 
lock(mutex);
 
readcount--;
 
if(readcount == 0)
 
unlock(wrt);
 
unlock(mutex);
 
}while(1);
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