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IBM Interview Question for Software Engineer / Developers


Country: India
Interview Type: In-Person



Comment hidden because of low score. Click to expand.
2
of 2 vote

Move mre.set(); into the lock block

- Tony November 26, 2013 | Flag Reply
Comment hidden because of low score. Click to expand.
1
of 1 vote

Change

if (queue.Count == 0) mre.WaitOne();

to

while (queue.Count == 0) mre.WaitOne();

- Manoj November 26, 2013 | Flag Reply
Comment hidden because of low score. Click to expand.
0
of 0 votes

why do we need while? doesnt waitOne blocks until the producer sets mre again?

- Karrie November 26, 2013 | Flag
Comment hidden because of low score. Click to expand.
0
of 0 votes

your java code has syntax errors but i agree with Manoj that you need a while loop or some kind of notify when queue resouces are available again. the error that they gave you should be a clue that the if statement is not looping to check if queue has some resources again.

- Anonymous November 26, 2013 | Flag
Comment hidden because of low score. Click to expand.
0
of 0 votes

thanks!

- Karrie December 05, 2013 | Flag
Comment hidden because of low score. Click to expand.
0
of 0 vote

ans is ManualResetEvent is used it will allow all the waiting threads to be revoked and thus if two thread access teh queue and one will win and other will have a dequeue error. to avaoid this before aquiring the lock just check for queue count :)

- Anonymous April 20, 2014 | Flag Reply
Comment hidden because of low score. Click to expand.
0
of 0 vote

Despite the changes suggested, i think we should unlock after enquing the queue and upon deque.
Any thoughts , or am i missing something tat unlock is being handled internally somehow?

- ana May 25, 2014 | Flag Reply


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