tcpdump mailing list archives
regarding usage of recv calls in mmap code
From: abhinav narain <abhinavnarain10 () gmail com>
Date: Wed, 7 Nov 2012 13:28:31 -0500
hi I wanted to know why is MSG_PEEK used in the recv() call in mmap code and not recvfrom() with MSG_TRUNC flag. The reason i am asking is .. because I see my code takes a lot of CPU which is due to more looping, I suppose. The flag description for MSG_PEEK shows it doesn't discard the bytes even after reading from the queue. Can someone please explain. I would like to use recvfrom with MSG_TRUNC .. is that fine ? -Abhinav _______________________________________________ tcpdump-workers mailing list tcpdump-workers () lists tcpdump org https://lists.sandelman.ca/mailman/listinfo/tcpdump-workers
Current thread:
- regarding usage of recv calls in mmap code abhinav narain (Nov 11)
- Re: regarding usage of recv calls in mmap code Guy Harris (Nov 11)