Display memory context records (VMCOs).

Syntax:

ÄÄÄÄ.MC ÄÄÄÄÂÄÄÄÄÄÄÄÂÄÂÄÄÄÄÄÄÄÂÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄ
              ÀÄÄ B ÄÄÙ ÃÄÄ F ÄÄ´ ÃÄÄ hcoÄÄÄÄÄÂÄÄÄÂÄÄÄÄÄÄÄÄÄ´
                        ÀÄÄ C ÄÄÙ ÀÄÄ laddr ÄÄÙ   ÀÄÄ Ln ÄÄÄÙ

Parameters:

B

Display in-use (busy) alias records in sequential order.
C
Display chained context records.

Chaining causes related context records that are chained from hconext of the current context to be formatted. The head of each group indicated by an * suffix. Context records are chained to represent each instance of an object being shared among several processes. The head of the chain is pointed to by the hco field of the corresponding arena record See .MA command for information on formatting arena records.

Notes:

There is no pointer to the arena record from the context record. Associated arena records have to be found by scanning arena or object records.

The C option will not format context records from the head of the chain. Do achieve this, locate the corresponding arena record and use

.MAC har

F
Display free alias records.
laddr
Specifies the linear address of a specific context record to be formatted.
Ln
Specifies the number of context records to display.
hco
Specifies the handle of a specific context record to be formatted.

Results & Notes:

Context records are in contiguous storage, which is anchored from the address given by global variable:

_pcovmOne

Output from the MC. command appears in one of two formats:

Free Context Records
Busy Context Records

For a description of the fields formatted by .MC select .MC Output Field Descriptions

For more examples using of the .M family of commands see: Exploring Memory Management.

In some versions prior to fix pack 29 for Warp V3 the Dump Formatter did not interpret and format the VMCO correctly. In addition VCMO chains were not followed correctly when the C options was used. These problems are fixed from fix pack 29 of Warp V3 and base Warp V4.

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