Hi, I am stuck on the following problem, please help me in finding a solution.
In my C program, I have two threads, thd_r reading video realtime from an hardware and thd_w writing to a file. thd_r is very slow (as it real time video capture) as compared to thd_w. To push data from one thread to another push a buffer in a g_queue which get pulled in the thd_w and used. But since thd_r is much slower then thd_w, I have to wait in thd_w again and again in a while loop polling for the data to be pushed queue from thd_r. Because of this polling using while, huge CPU is getting consumed. This I try fixing by putting a usleep in the while loop , hence there is a small decrease in cpu utilization. But its a not so good hack, nor a right fix. Right thing would be that I put my thd_w in sleep till there is no data in the queue and once thd_r pushes some data in queue the thd_w should wake up to consume. But I am not sure how can I achieve this ? Can someone please point me to right solution. Note: Both these threads are completely independent and I can't share there memory space etc. I dont have control over the hardware so that I can send some interupts etc. Looking forwrad to a solution. Thanks Regards Kapil -- http://www.linkedin.com/in/kapilagrawal _______________________________________ Pune GNU/Linux Users Group Mailing List
