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• What is the difference between yield() and sleep()?

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1. Submitted By: Amy — September 18, 2007 not yet rated   + -

   When a object invokes yield() it returns to a ready state. But when an object invokes sleep() it does not enter a ready state.

3. Submitted By: vinay — October 13, 2007 +1 votes   + -

   When a thread calls yield function, it is telling the CPU specifically to allow another thread to access the resources. This means that the caller thread voluntarily is giving up resources instead of preemption by the processor’s scheduling algo.

   Incase of sleep(), the caller thread wants to go to sleep for a specific period of time, regardless of what the CPU does to it. This means that even though by virtue of scheduling algorithm, the time for changing a state has arrived for the thread, if it invoked sleep(), it wont wakeup untill the specific time period that it wanted to sleep has expired. The thread will start executing immediately after the time expires.

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