openocd: fix for polling during "expr" computation 74/7174/2
authorAntonio Borneo <borneo.antonio@gmail.com>
Tue, 6 Sep 2022 12:44:57 +0000 (14:44 +0200)
committerAntonio Borneo <borneo.antonio@gmail.com>
Tue, 13 Sep 2022 22:14:28 +0000 (22:14 +0000)
commit320043c054dc0c9f274d462014bd7aafff86fe02
tree34938d10945ec7078bcdcf7d890718897afd1977
parent5d6be673c36b00eb962cbb441dd557d3cc8eb03c
openocd: fix for polling during "expr" computation

Commit c7eaaf620488 ("openocd: prepare for jimtcl 0.81 'expr'
syntax change") replaces the jimtcl command "expr" with an openocd
version that detects the TCL syntax change and prints a warning.
The openocd "expr" command will be dropped after v0.12.0,

One side effect is that openocd invokes polling the target after
every openocd command, causing scripts that use several "expr"
commands to run much slower; see [1].

The proper fix would require openocd to invoke polling only at the
time period deadline, instead of at each command. Such fix is too
risky to be applied now, due to short time before v0.12.0-rc1.

As a temporarily workaround, let openocd to detect the "expr"
command and skip the polling.
This will be dropped together with the openocd "expr" command.

Change-Id: I8151aa28694817001046165a15475d64896f985e
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Fixes: https://sourceforge.net/p/openocd/tickets/362/ [1]
Fixes: c7eaaf620488 ("openocd: prepare for jimtcl 0.81 'expr' syntax change")
Reviewed-on: https://review.openocd.org/c/openocd/+/7174
Tested-by: jenkins
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
src/helper/command.c

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