tcpdump mailing list archives
Re: Multi process sniffing and dropped packets
From: "Gianluca Varenni" <gianluca.varenni () cacetech com>
Date: Fri, 13 Jan 2006 08:42:16 -0800
----- Original Message ----- From: "Guy Harris" <guy () alum mit edu>
To: <tcpdump-workers () lists tcpdump org> Sent: Thursday, January 12, 2006 5:17 PM Subject: Re: [tcpdump-workers] Multi process sniffing and dropped packets
On Jan 12, 2006, at 3:29 PM, Gianluca Varenni wrote:BUT..is pcap library able to manage safety multi process (or maybe multi thread) calls with the same pcap_t handle in each process ?No. The pcap_t handle is not guaranteed to be thread-safe. Specifically, every packet returned by pcap_next (or pcap_next_ex) is valid until the next call to pcap_next_ex, pcap_close (or pcap_loop/dispatch).He's talking about multiple processes, not multiple threads, so each process would have its own pcap_t handle.
That's why I said "thread-safe". He was asking "multi process (or maybe multi thread)".
Maybe I was not clear enough. GV
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Current thread:
- Multi process sniffing and dropped packets computational_complex-forthespam (Jan 12)
- Re: Multi process sniffing and dropped packets Gianluca Varenni (Jan 12)
- Re: Multi process sniffing and dropped packets Guy Harris (Jan 12)
- Re: Multi process sniffing and dropped packets Gianluca Varenni (Jan 13)
- Re: Multi process sniffing and dropped packets Robert Lowe (Jan 12)
- Re: Multi process sniffing and dropped packets computational_complex-forthespam (Jan 14)
- Re: Multi process sniffing and dropped packets Rick Jones (Jan 17)
- Re: Multi process sniffing and dropped packets computational_complex-forthespam (Jan 21)
- Re: Multi process sniffing and dropped packets Guy Harris (Jan 12)
- Re: Multi process sniffing and dropped packets Gianluca Varenni (Jan 12)
- Re: Multi process sniffing and dropped packets Michael Richardson (Jan 12)
- Re: Multi process sniffing and dropped packets Guy Harris (Jan 12)
- Re: Multi process sniffing and dropped packets Guy Harris (Jan 12)
- Re: Multi process sniffing and dropped packets Rick Jones (Jan 12)