Date: Tue, 23 Mar 1999 23:03:37 +0100 From: Gary Jennejohn <garyj@peedub.muc.de> To: freebsd-questions@FreeBSD.ORG Cc: Masahiro Ariga <mariga@cd.mbn.or.jp> Subject: Re: how to die gracefully Message-ID: <199903232203.XAA49073@peedub.muc.de> In-Reply-To: Your message of "Mon, 22 Mar 1999 17:11:54 EST." <Pine.BSF.4.05.9903221710050.293-100000@nyc-ny78-59.ix.netcom.com>
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Spike writes: >On Mon, 22 Mar 1999, Masahiro Ariga wrote: > >> My name is Masahiro Ariga, >> I made a server-like program which receives data from another PC by using >> socket and,inside,uses pipes and communicates among processes,and send those >> finished data to client PC using socket . >> Right now,each process works in the form of infinite loops, and only way to >> finish the program is to enter Ctl^C. >> First loaded program works fine,and enters Ctl^C to exit it,but if I execute >> it second time,it shows abnormalties like taking time to start to send data >> to clent,and badly enough,it responds not at all. >> I presume it results from not closing sockets,or residual memory or >> something,but I'm not sure. >> >> So,sinior UNIX programers,would you teach me next two questions ? >> >> 1.How should I exit gracefully by pushing Ctl^C. I mean,what should I do to >> recover normal condition in preparation for next execution ? > >Well, close the sockets, kill the children processes, and call exit(). > >> 2.I like to catch the signal when pushed Ctl^C,and make a handler >> routine.Would you tell me what signal I can catch when enterring Ctl^C ? > >The signal generally generated by the shell when ^C is entered is SIGTERM. >Refer to sigaction(2) and signal(3). > I think he needs to look into SO_REUSEADDR. --- Gary Jennejohn Home - garyj@muc.de Work - garyj@fkr.dec.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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