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тАО08-09-2005 01:38 AM
тАО08-09-2005 01:38 AM
SYSIPC/ICC - Characteristics : "Max Send Size"
I caught some output from SDA/IPC:
SDA> ipc sho assoc /sysipc
Name Table Entry : 8175CC70
---------------------------
Association Name ICC$PID_25232403
NT Flags Txcomp,Fcont,Eventrcv,Replycomp
IPCID 8175CC70 Max Buf Count 5
Max Send Size 256 Max Reply Size 256
Process ID (PID) 00640403 Event Routine Addr 89C051D0
Is there someone who can help me to understand:
1) what is the "Max Send Size" parameter ?
2) how this parameter is controlled with $icc_open_assoc ?
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тАО08-09-2005 04:23 AM
тАО08-09-2005 04:23 AM
Re: SYSIPC/ICC - Characteristics : "Max Send Size"
nt$l_maxsend is loaded from ipst$l_maxout, which is loaded with a constant value ICC$C_MAXRECBUFSIZ = Recv bfr size (bytes) = 256.
You can't specify this value from $ICC_OPEN_ASSOC.
What this really does on which protocol level of ICC/IPC, I can't tell.
Volker.
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тАО08-09-2005 05:02 AM
тАО08-09-2005 05:02 AM
Re: SYSIPC/ICC - Characteristics : "Max Send Size"
Thanks again, but I found nothing in the 7.3-2 docs about of ICC$C_MAXRECBUFSIZ...
http://starlet.deltatel.ru/disk$axpdocsep041/opsys/vmsos732/vmsos732/4527/4527pro_005.html#icc_serv_open
Where you find info about the constant ?
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тАО08-09-2005 05:24 PM
тАО08-09-2005 05:24 PM
Re: SYSIPC/ICC - Characteristics : "Max Send Size"
this information is from the OpenVMS source listings. Detailled and internal information about ICC/IPC does not seem to be available.
Volker.
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тАО08-09-2005 05:26 PM
тАО08-09-2005 05:26 PM
Re: SYSIPC/ICC - Characteristics : "Max Send Size"
I have 7.3-2 sources, I'm need to look into again. Thanks.
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тАО08-09-2005 07:31 PM
тАО08-09-2005 07:31 PM
Re: SYSIPC/ICC - Characteristics : "Max Send Size"
Found some answers in the ICC$TRANSFER_ROUTINES.LIS:
...
1 4052 !
1 4053 ! send_len Type: longword (UNSIGNED)
1 4054 ! Access: READ only
1 4055 ! Mechanism: by value
1 4056 !
1 4057 ! The length (in bytes) of the data to be sent over
1 4058 ! the connection. This value specifies the length
1 4059 ! of the buffer 'send_buf'. If necessary, IPC may
1 4060 ! segment buffers over 16384 bytes internally (AND
1 4061 ! transparently to the user).
...