Stop search instance "*FF*" from locking up the GUI

[oharboe]

Description

For a large design, it is easy to accidentally launch a search that is too broad, this will then lock up the GUI.

Suggested Solution

Press "ESC" to stop search, the user can then correct. Perhaps print something in console log as to how many were selected or other actionable info.

Additional Context

No response

[rovinski]

Just to add, many commercial tools throw a popup at ~10k instances asking if you are sure you want to continue.

[maliberty]

It comes back to the general issue of needing a cancel option on many long running commands. The same sort as parallaxsw/OpenSTA#111

[oharboe]

It comes back to the general issue of needing a cancel option on many long running commands. The same sort as parallaxsw/OpenSTA#111

The use case here is a bit different: it is used as a beggars heatmap for flip flops, wires, etc.

[oharboe]

Also, I think there is a performance problem unqiue to instances, I dont recall it locking up on wires.

Perhaps the performance can be fixed and we can forget all about it?

[oharboe]

Also, I think there is a performance problem unqiue to instances, I dont recall it locking up on wires.

Perhaps the performance can be fixed and we can forget all about it?