keep track of mutex/lock variable used with a resource.Thus essentially we can apply mutex on the new proxy 'resource_counter' variable that represents the state of the shared resource. 0 or more readers can access a resourceĠ or 1 writer can write the resource concurrently at the same time.The Producer applies Signal to the Consumer thread when the list is full.Notify only one thread waiting on condition.The consumer applies Wait until the list is full.
mutex is automatically released and re-aquired on wait.Thus we have to execute the Consumer thread only under a certain condition (here- when the list becomes empty, print items). The producer appends items to a list until the list is full, and the consumer has to print out all the items of the list once the list if full and then empty the list. What if the processing you wish to perform with mutual exclusion needs to occur under certain conditions?įor e.g. The list can be accessed by reading shared variable. Thread type, Thread ID, PC, SP, registers, stack, attributes.Waking up other threads from wait state.Exclusive access to only one thread at a time.Mechanisms to safely coordinate among threads running concurrently in the same address space.Mechanisms to create and manage threads.Identify threads, keep track of resource usage.
#Android tonegenerator concurrent thread drivers
OS level services like daemons and drivers.
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