'Cond wait' presentation slideshows

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Condition Variables

Condition Variables. CS 241 Prof. Brighten Godfrey March 16, 2012 University of Illinois. Synchronization primitives. Mutex locks Used for exclusive access to a shared resource (critical section) Operations: Lock, unlock Sempahores

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Too Much Milk With Locks

Both threads: struct lock l; ... l ock_acquire (&l); if (milk == 0) { buyMilk (); } lock_release (& l);. Too Much Milk With Locks. char buffer[SIZE]; int count = 0; int head = 0, tail = 0; struct lock l; lock_init(&l); void put(char c) { lock_acquire(&l); count++;

203 views • 10 slides