Re: [9fans] alt and chanfree

["Mathieu Lonjaret" <mathieu.lonjaret@gmail.com>]

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That's exactly the sense of my question, thanks.
I didn't see in the man page if I should do that sort of cleaning up or
not, it just says that the channel can be freed from either side. so I
wasn't sure in what state alt() is expecting the Alt entries to be at
all time.

I'll try it out later today, thanks.

Cheers,
Mathieu

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From: roger peppe <rogpeppe@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] alt and chanfree
Date: Tue, 14 Sep 2010 10:55:55 +0100
Message-ID: <AANLkTinXHZ_QbM+CbWwJ_j-t-HY5RtK8Fbwf-i8R+rgr@mail.gmail.com>

On 14 September 2010 09:57, Mathieu Lonjaret <mathieu.lonjaret@gmail.com> wrote:
>        for(;;){
>                n = alt(a);
>                if(n < 0)
>                        error("with alt");
>
>                if (m[0] == 0){
>                        // a caller has terminated
>                        dosomestuff()

shouldn't you nil out the appropriate part of the alt
array here? i.e. a[n].c = nil
otherwise you'll be alting on a freed chan which
must be bad.