The uvm_agent virtual class should be used as the base class for the user- defined agents. Deriving from uvm_agent will allow you to distinguish agents from other component types also using its inheritance. Such agents will automatically inherit features that may be added to uvm_agent in the future.
While an agent’s build function, inherited from uvm_component, can be implemented to define any agent topology, an agent typically contains three subcomponents: a driver, sequencer, and monitor. If the agent is active, subtypes should contain all three subcomponents. If the agent is passive, subtypes should contain only the monitor.
| uvm_agent | ||||||
| The uvm_agent virtual class should be used as the base class for the user- defined agents. | ||||||
| Class Hierarchy | ||||||
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| Class Declaration | ||||||
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| Methods | ||||||
| new | Creates and initializes an instance of this class using the normal constructor arguments for uvm_component: name is the name of the instance, and parent is the handle to the hierarchical parent, if any. | |||||
| get_is_active | Returns UVM_ACTIVE is the agent is acting as an active agent and UVM_PASSIVE if it is acting as a passive agent. | |||||
function new ( string name, uvm_component parent )
Creates and initializes an instance of this class using the normal constructor arguments for uvm_component: name is the name of the instance, and parent is the handle to the hierarchical parent, if any.
The int configuration parameter is_active is used to identify whether this agent should be acting in active or passive mode. This parameter can be set by doing:
set_config_int("<path_to_agent>", "is_active", UVM_ACTIVE);
virtual function uvm_active_passive_enum get_is_active()
Returns UVM_ACTIVE is the agent is acting as an active agent and UVM_PASSIVE if it is acting as a passive agent. The default implementation is to just return the is_active flag, but the component developer may override this behavior if a more complex algorithm is needed to determine the active/passive nature of the agent.
The uvm_object class is the base class for all UVM data and hierarchical classes.
virtual class uvm_object extends uvm_void
The uvm_report_object provides an interface to the UVM reporting facility.
class uvm_report_object extends uvm_object
The uvm_component class is the root base class for UVM components.
virtual class uvm_component extends uvm_report_object
The uvm_agent virtual class should be used as the base class for the user- defined agents.
virtual class uvm_agent extends uvm_component
Creates and initializes an instance of this class using the normal constructor arguments for uvm_component: name is the name of the instance, and parent is the handle to the hierarchical parent, if any.
function new ( string name, uvm_component parent )
Returns UVM_ACTIVE is the agent is acting as an active agent and UVM_PASSIVE if it is acting as a passive agent.
virtual function uvm_active_passive_enum get_is_active()