self aborting sequence

[manjubshetty]

Hey,

I have a requirement where sequence needs to kill itself, if some condition is satisfied. I am using "disable" to do it.

In the body of the sequence, I have something like this:

body()

begin: name

do something;

if(condition)

disable name;

do something else;

end

It works but is there a better way to do this in UVM/OVM?

Thanks and Regards,

Manju Shetty

[uwes]

hi,

i would avoid using thread/process like commands on an executing sequence like fork/join/kill/suspend/disable. the reason for this is that inside the sequencer/sequence/driver there are handshakes and other processes working. forcefully ending parts of the engine may cause hangs, lockups etc. you may have a look at the mantis collection showing some issues. if you really want a sequence to stop you should be using the official api "seq.kill()" or as hook "do_kill()"

/uwe

[mastrick]

Manju,

Perhaps there is more to your code, but could you just call return where you have the disable? I believe seq.kill() will mean that post_body() will not execute and you may want that to drop objections, etc.

Mark

[manjubshetty]

Uwes and Mark, Thank you.

Uwes approach works for my sequences.

With Mark's approach i get compile error:

The 'return' statement cannot span parallel block boundary [systemVerilog].

Mark has a valid point, though. If we are using kill(), arent we missing post_body()?

Regards,

Manju Shetty