Debugging a Program With dbx

`showmemuse`

This command generates a report showing all blocks of memory in use:

showmemuse [-a] [-m m
] [-n num]
[-v]

Report the top num blocks-in-use records sorted by size. Only blocks that are new since the last showmemuse command are shown.

`-a`	Shows all blocks in use so far.
`-m` `m`	Used for combining the blocks-in-use reports; if the call stack at the time of allocation for two or more blocks matches `m` frames, then the blocks are reported in a single combined report. The -m option overrides the global value of `m` specified with the `check` command. The default value of `m` is 2 or the global value last given with `check`.
`-n` `num`	Shows up to `num` records in the report. Default is to show 20.
`-v`	Generates verbose output. Default is to show non-verbose output.

When memory use checking is on, at program exit an implicit showmemuse -a -n 20 is performed. You can get a verbose output at the program exit time by using the rtc_biu_at_exit dbxenv variable.