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psmshell - Online in the Cloud

Run psmshell in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command psmshell that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


psmshell - PSM memory management test shell

SYNOPSIS


psmshell partition_size

DESCRIPTION


psmshell allocates a region of partition_size bytes of system memory, places it under PSM
management, and offers the user an interactive "shell" for testing various PSM management
functions.

psmshell prints a prompt string (": ") to stdout, accepts a command from stdin, executes
the command (possibly printing a diagnostic message), then prints another prompt string
and so on.

The locations of objects allocated from the PSM-managed region of memory are referred to
as "cells" in psmshell operations. That is, when an object is to be allocated, a cell
number in the range 0-99 must be specified as the notional "handle" for that object, for
use in future commands.

The following commands are supported:

h The help command. Causes psmshell to print a summary of available commands. Same
effect as the ? command.

? Another help command. Causes psmshell to print a summary of available commands. Same
effect as the h command.

m cell_nbr size
The malloc command. Allocates a large-pool object of the indicated size and
associates that object with cell_nbr.

z cell_nbr size
The zalloc command. Allocates a small-pool object of the indicated size and
associates that object with cell_nbr.

p cell_nbr
The print command. Prints the address (i.e., the offset within the managed block of
memory) of the object associated with cell_nbr.

f cell_nbr
The free command. Frees the object associated with cell_nbr, returning the space
formerly occupied by that object to the appropriate free block list.

u The usage command. Prints a partition usage report, as per psm_report(3).

q The quit command. Frees the allocated system memory in the managed block and
terminates psmshell.

EXIT STATUS


"0" psmshell has terminated.

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