There is a useful utility found in
/CMC/tools/cadence/IC/tools/bin/clsAdminTool
which is used to display a list of all edit locks in a given directory hierarchy. It is useful when Cadence reports errors relating to file locking problems of the sort:
*****Start of error message ******
*WARNING* XXreopen: failed to lock file
/home/keith_richards/VLSI_TUTORIAL/mylib2/pmos/layout/layout.cdb in A_MODE mode
- is currently "write" locked by user keith_richards on machine
heartbreaker
(since Tue Feb 19 14:08:23 2002 EST.)
Can't make
/home/keith_richards/VLSI_TUTORIAL/mylib2/pmos/layout/layout.cdb
Editable -
***** End of error message *****
One would use the /CMC/tools/cadence/IC/tools/bin/clsAdminTool to query the status of existing file locks:
ted@heartbreaker 5:58pm > clsAdminTool
> help
Commands:
system
- execute shell command
ale
- List all Edit Locks in directoryHierarchy
aple
- List all Edit Locks of process pid in directoryHierarchy
are
- Release all Edit Locks in directoryHierarchy
apre
- Release all Edit Locks of process pid in directoryHierarchy
asre
- Release Edit Lock on the file specified by filePath
exit
- exit with last status
help
- This output
quit
- quit (with good status (0))
I tested it out by opening up one of my designs in /home/ted/CMOSIS5:
> ale /home/ted/CMOSIS5
BEGIN: Edit Locks List
/home/ted/CMOSIS5/tedcomponents/TED_CHIP/layout/layout.cdb flash 26038
10141593
40
END: Edit Locks List
SUMMARY: Only one Edit Lock was found in the directory hierarchy:/home/ted/CMOSIS5.
>
Cadence creates a library_name_cell_name_.cdslck in the directory containing the cell. This file gives information as to who locked which design and on which machine:
ted@flash layout 6:01pm >more layout.cdb.cdslck
# Edit Lock-Stake file. CAUTION: Please do not change.
#
# Information about current Edit Lock Owner.
#
LockStakeVersion 1.0
LoginName ted
HostName flash
ProcessIdentifier 26038
ProcessCreationTime_UTC 1014159340
ProcessCreationTime_Readable Tue Feb 19 17:55:40 2002 EST
AppIdentifier /CMC/tools/cadence.2000a/IC/tools/dfII/bin/icfb.exe
OSType sun4v
ReasonForPlacingEditLock XXopen upgrade lock
FilePathUsedToEditLock
/home/ted/CMOSIS5/tedcomponents/TED_CHIP/layout/layout.cdb
TimeEditLocked Tue Feb 19 17:56:14 2002 EST
Deleting this file fixes the problem of being unable to open a particular cell for editing.
