Advanced_Mapper
Mappers / SoftwareMapper
Code File Location: VisualSim/actor/lib/Task_Issue
o Is a Mapper thata conencts the behavior flow with the archietcture resource.
o Receives
a data structure on the input port, extracts the required information
based on the parameter settings, places it in the queue
and when the Resource becomes available, sends the Data Structure with
the information to the SystemResource or SystemResource_Extend.
o Resource name can be set a string name (Static) or as a data structure field (Dynamic) where the selected resource can change each time.
o There are two difference between this block and the Mapper- this has a local queue and the second is that this enables Mutex for the Data Structures.
The Software_Mapper sends the
incoming Data Structure to the SystemResource or SystemResource_Extend
based on the
parameter settings of this block. There are two difference between this
block and the Mapper- this has a local queue and the second is that
this enables Mutex for the Data Structures. The queue will
auto-size and no parameter is required for the size of the queue.
The parameter settings of this block determine how the task will be processed by the Resource. All of the parameter fields can be fixed values, or fields of incoming Data Structures, or an expression containing RegEx, fields, parameter, data and variables. The field must be prefix with 'input.'. This allows information to be passed for further model refinement, especially with the SystemResource_Extend Block. The block can either Queue the incoming Data Structure or send it to the SystemResource imemdiately. When Queued, the simulator notes down the order of arrival and sends it to the appropriate SystemResource when the SystemResource becomes available. The task time can be fixed or variable based on this block settings.
Refer SystemResource_FCFS_Preempt_Mutex demo model.
Parameter |
Explanation |
Type |
Example |
Parent_Scheduler_Name |
Parameter used to identify the SystemResource or SystemResource_Extend. This parameter can have
a static value or can be an expression. The expression can
contain a string, parameter, variable, data structure field or an
Expression with RegEx. The field name must have the input. prefix |
String or Expression |
"Processor" or (getBlockStatus("CPU1,"length")>1?CPU2:CPU1 |
Task_Number |
The processing period along a timeline is available on the plot_output from the Schedulers. The duration is highlighted by a low-to-high at the beginning and high-to-low at the end of the period. The Task_Number value is the height on the Y-axis. If plotting is important, this number must be unique. If the default is unchanged, the Task_Number = 1 |
Integer or String (field) Or Expression |
Task_Numer or 1 |
Task_Priority |
Parameter for the priority of the data structure. The priority is sent to the SystemResource and SystemResource_Extend. The queue in the SystemResource is reordered based on the priority. This field can contain an integer (fixed for all data structures), or an expression with a parameter, variable, data structure field or RegEx. The field name must have the input. prefix
If the Priority is not required, then the default can be retained or None . |
Integer or Expression |
A_Priority or 2 or None |
Task_Mean_Time |
It is used in conjunction with Task_Distribution. In Uniform distribution it represents minimum time. In Exponential distribution it represents the mean. In Normal distribution it represents the mean value. In Fixed distribution, it represents the task execution time. The task time is passed to a SystemResource or SystemResource_Extend and determines the duration of the task. The value passed is units of time if the SystemResource setting is relative time and number of clock cycles if the SystemResource setting is number of clocks. If a distribution is selected, then the value passed to the SystemResource is based on the distribution calculation.
This field can contain an double (fixed for all data structures), or an expression with a parameter, variable, data structure field or RegEx. The field name must have the 'input.' prefix |
Double or String (field) or Expression |
input.DELTA or 2.0 |
Task_Spread_Time |
It is used in conjunction with Task_Distribution. In Uniform distribution it represents maximum time and in Normal distribution it represents standard deviation.
This field can contain an integer (fixed for all data structures), string referencing a field, or an expression with a parameter, variable, data structure field or RegEx. The field name must have the 'input.' prefix |
Double or String (field) |
2.0 |
Random_Seed |
It is used to set the random seed for the uniform, exponential, or normal distributions. |
- |
123457L |
Task_Distribution |
Task_Distribution attribute for statistically estimating task executuion, such as "Fixed (Mean)," "Uniform (Mean, Spread)," "Exponential (Mean)," or "Normal (Mean, Spread)." |
Selector |
Fixed (Mean) |
Task_Type |
Task
Type attribute, either "Queue Task Now", or "Issue Task Now". If
"Queue Task Now", then used to queue tasks at the Software_Mapaper and
if "Issue Task Now" then it is sent immediately to the SystemResource or
SystemResource_Extend queue. |
- |
Queue Task Now |
Task_Mutual_Exclusion |
Task_Mutual_Exclusion attribute is used to lock out all other tasks from preempting this Task at the SystemResource when the parameter is set to true and once the task starts. If set to false, then no effect on at the SystemResource. |
- |
No |
Port |
Explanation |
input |
The input port. |
output |
The output port. |
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