Lock a sequencer from virtual sequence

UVM
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14

In reply to chr_sue:

Have a look at uvm_sequencer_base.svh source code. Both lock() and unlock() call m_lock_req(), just with a different flag. Here is the key code that adds the requested sequence to the queue.

task m_lock_req(..., bit lock);
  ...
  if (lock == 1) begin
    // Locks are arbitrated just like all other requests
    arb_sequence_q.push_back(new_req);
  end else begin
    // Grabs are not arbitrated - they go to the front
    arb_sequence_q.push_front(new_req);
  end
  ...
endtask