NAME¶

sasutil - control program for libsphde project

SYNOPSIS¶

sasutil [-h] [-v] [-p path] <command> [<args>]

DESCRIPTION¶

The sasutil utility is used to control de libsphde share memory segments, showing its internal details (memory state/dump, lock/semaphores details, etc.), memory maps and reseting its internal state.

OPTIONS¶

-v


    Prints the sasutil version.

-h


    Prints the synopsis and a list of the available commands.

-p


    Path to wherever libsphde segment is located. This also can be


    controlled by setting SASSTOREPATH environment variable. If not path is


    given, will use the current path.

COMMANDS¶

The available commands are: stat, detail, reset, dump, remove, list, path, and map.

stat


    Shows the overall memory statistics: total in use, total free, total


    uncommited, total region free, total region used, and anchor free space.

detail


    Shows detailed information, dividing each statistic from stat


    command in memory block information.

reset


    Resets the anchor semaphore (used to access the control shared memory


    segment), the allocated segments and all internal locks. This command


    is useful to reset the SPHDE state after an process finished with


    unexpected error (like a SEGFAULT).

dump <address\:size>


    Dumps a list of <memory:size> where <memory> is a memory address in


    hexadecimal and <size> is decimal. The output is similar to


    hexdump utility called with '-C' option.

remove


    Removed the allocated segments, internal locks and anchor semaphores from


    control shared memory segment).

list


    List and dump in use shared memory blocks.

path


    Shows the store path used (as indicated by SASSTOREPATH).

map <pid> 


    Shows the memory map (/proc/<pid>/maps) for PIDs indicates as aguments.


    Default is current process.

ENVIRONMENT VARIABLES¶

The sasutil command accepts te following environment variables:

SASSTOREPATH


    Defines the path to search for the store segment to attach and analyze.

AUTHOR¶

Written by Steven Munroe (initial API and implementation) and Adhemerval Zanella (bugfixes and API improvements).

REPORTING BUG¶

Report a bug to munroesj@us.ibm.com

COPYRIGHT¶

Copyright (c) 2009, 2011 IBM Corporation. All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0 which accompanies this distribution, and is available at http://www.eclipse.org/legal/epl-v10.html .

SEE ALSO¶