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From: rmitchel@bbn.com (Rob Mitchell)
Newsgroups: comp.sys.mac.programmer
Subject: Can I/O Completion routine call 'GetRequest'??
Keywords: AppleTalk
Message-ID: <63618@bbn.BBN.COM>
Date: 9 Apr 91 18:10:22 GMT
Sender: news@bbn.com
Distribution: comp
Lines: 32


    I've created a list of 20 parameter blocks and queued them into a 
    pseudo "free" list (at the start of my program).  Each has a "state"
    of FREE.  I call ATP's 'GetRequest' asynchronously once using a globally 
    created param block (should it really be a global or one of the "free" 
    ones?).

    When Mac receives a TReq, my I/O Completion routine assigns reg. A0
    (which contains address of current param block) to local variable and
    set param's "state" to INCOMING.  

    What I need to do now is queue another 'GetRequest' from my I/O
    Completion routine.  Can I call I use a different "free" element
    and make the 'GetRequest' call from my I/O Completion routine?
    I'm not allocating/moving any memory, right?  GetRequest should
    just assign a bunch of pointers, right?  It probably doesn't move
	or allocate any memory, right??

    How else can I have at least one 'GetRequest' always outstanding
    at *any* given time?????

    Thanks in advance!!!!


Rob Mitchell                            Advanced Simulation Division
Unix & Macintosh Engineer               BBN Systems & Technologies
Internet: rmitchel@vax.bbn.com          33 Moulton Street   MS: 8/C
Primary Dwelling:   617-873-4041        Cambridge, MA  02138
Secondary Dwelling: 617-873-4071
FAX:                617-873-4315

These opinions are mine and mine only.  They do not represent BBNs' opinions.