crashbackups
Handle periodic backups during a layout editing session.
Usage:
crashbackups [start|stop|resume|disable]
Summary:
The crashbackups procedure enables or disables the
periodic saving of crash recovery backup files.
crashbackups or crashbackups start sets the
timer for the first periodic save. After the timer times
out, backup file is generated and written in the system
temporary directory, and the timer is reset. By default,
the backup interval is 10 minutes (600000 msec). The
interval can be changed by setting the value of Tcl variable
$Opts(backupinterval) to the interval value in msec.
crashbackups stop removes the timer callback and thus
prevents further writing of backup files. Note that if
crash recovery is stopped or started multiple times during
a session, the same filename is used to save the data.
crashbackups resume resumes running interval backups if
stopped using crashbackups stop. If the interval backups
have never been started, or have been disabled, this command
does nothing.
crashbackups disable stops running interval backups and
resets to the state of never having started interval backups.
resume will have no effect in this state, and start
must be issued to start the interval backups again.
Implementation Notes:
crashbackups is implemented as a Tcl procedure in the
"tools.tcl" script file. It calls the magic command
"crash save".
The crash backup interval is handled by the itimer system
subroutine. There is only one timer per process. A timer is also
used by some long-running commands such as extract to track
progress, so the crash backups must necessarily be suspended when
those commands are using the process timer.
See Also:
crash
Last updated: March 17, 2021 at 10:53am