Class uvm_pkg::uvm_event_callback
Name |
Default value |
Description |
|---|---|---|
T |
uvm_object |
Constructors
- new(string name = "")
Function
new
Creates a new callback object.
- Parameters:
name (string)
Functions
- pre_trigger(uvm_event#(uvm_object) e, uvm_object data)
Function
pre_trigger
This callback is called just before triggering the associated event. In a derived class, override this method to implement any pre-trigger functionality.
If your callback returns 1, then the event will not trigger and the post-trigger callback is not called. This provides a way for a callback to prevent the event from triggering.
In the function, e is the <uvm_event#(T)> that is being triggered, and data is the optional data associated with the event trigger.
- Parameters:
data (uvm_object)
- post_trigger(uvm_event#(uvm_object) e, uvm_object data)
Function
post_trigger
This callback is called after triggering the associated event. In a derived class, override this method to implement any post-trigger functionality.
In the function, e is the <uvm_event#(T)> that is being triggered, and data is the optional data associated with the event trigger.
- Parameters:
data (uvm_object)
- create(string name = "")
- Parameters:
name (string)
- Return type:
Copyright 2007-2010 Mentor Graphics Corporation Copyright 2007-2010 Cadence Design Systems, Inc. Copyright 2010 Synopsys, Inc. All Rights Reserved Worldwide
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
CLASS
uvm_event_callback
The uvm_event_callback class is an abstract class that is used to create callback objects which may be attached to <uvm_event#(T)>s. To use, you derive a new class and override any or both pre_trigger and post_trigger.
Callbacks are an alternative to using processes that wait on events. When a callback is attached to an event, that callback object's callback function is called each time the event is triggered.