markdown/gh_discussions/Documentation/5312.md

How to query odb database

Tool: OpenDB

Subcategory: Incomplete documentation

Conversation

titan73

I want to directly query odb database. How can I do that? There is no command for that. I found some ord::xxx commands by searching the net but there is no proper documentation with all commands.

titan73

also found odb::xxx. No documentation either. Most functions required a self argument. Tested "::odb::dbBlock_getPowerDomains [::odb::dbBlock]" to get power domains but it crashes.

titan73

I got to something using orf and odb to get the created power domains:

foreach pd [::odb::dbBlock_getPowerDomains [::ord::get_db_block]] { puts "[::odb::dbPowerDomain_getName $pd]" }

I think I get the idea. A pity it's not documented.

maliberty

We use swig on https://github.com/The-OpenROAD-Project/OpenROAD/blob/master/src/odb/include/odb/db.h so the APIs and comments there should be a guide. If you have specific questions please ask.

titan73

Ok thanks. It helps. Although not all methods have comments. dbPowerDomain for instance. How does int& is supposed to be mapped in tcl? Ex: bool getArea(int& x1, int& y1, int& x2, int& y2);