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Producer/Consumer

 
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# 1  
Old 07-07-2005
iowait function call
Hi all,
I have an Producer/Consumer program in C(using shared memory and semaphores).It is working fine with sleep calls after every read/write operation.Each one is a independent program.Now if i remove the sleep calls in consumer,it goes on waiting in the loop till the producer puts some valid data.Instead of doing this i was asked to call iowait() I am not aware how to use this function.Can anyone suggest some link abt this call and how to use it in the code.

Thanx in advance
Poorni
# 2  
Old 07-08-2005
Producer/Consumer
hi
i have a producer consumer programs running with sleep() command after every successful read/write.Now if the sleep command in the consumer is removed then the consumer is looping continuosly for the producer to produce.Instead shall v make it wait till the producer writes into shared memory so that consumer can read????wait() cant be used as there is no parent- child relationship exists between these programs ..so is there any other way?????

thanx in advance
Poorni
# 3  
Old 07-08-2005
poorni_uma,

Please dont bump-up/repost questions. Thats against the forum rules.

Thanks,
Vino
# 4  
Old 07-08-2005
Read "man semop" and pay attention to the comments about IPC_NOWAIT.
 
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