hydra

Class ClientNameLockStepTaskScheduler

java.lang.Object

hydra.BaseTaskScheduler

hydra.ClientNameTaskScheduler

hydra.ClientNameLockStepTaskScheduler

All Implemented Interfaces:

TaskScheduler

public class ClientNameLockStepTaskScheduler
extends ClientNameTaskScheduler

This class acts as the task scheduler for tasks that run at the start and end of a test, in single-threaded VMs started just to run the tasks, that is, tasks of type STARTTASK and ENDTASK.

Tasks are run in the order given in the test configuration. All client threads designated to run a task run it concurrently, but task(i+1) is only scheduled after all clients running task(i) have completed.

Sample timeline with 3 clients running 3 tasks...

 c1:  t1---------------t2------     t3------    |
 c2:  t1---------                   t3----------|
 c3:  t1----           t2-----------t3---       |
 

Each task is executed only in VMs with the logical client names specified for that task in the test configuration file, or, if none are specified, in the VM for each and every logical client name defined in the file. See ClientPrms.names for how to specify clients.

Field Summary

Fields inherited from class hydra.BaseTaskScheduler

disconnect, haltIfBadResult, log, name, purpose, tasks, termination, vms

Constructor Summary

Constructors

Constructor and Description
ClientNameLockStepTaskScheduler(String name, Vector tasks, String purpose) Creates a task scheduler by the given name for the purpose of executing the given set of start or end tasks in lock step.

Method Summary

Modifier and Type	Method and Description
protected boolean	executeTasks() Executes the tasks using the existing clients.

Methods inherited from class hydra.ClientNameTaskScheduler

createClients

Methods inherited from class hydra.BaseTaskScheduler

assignTask, exceededMaxResultWaitSec, exceededMaxResultWaitSec, exceededMaxResultWaitSec, executedNormally, executedNormallyOrNoHaltOrder, executeTasks, fakeKillResults, getTsid, getVm, getVms, hadDynamicActionError, hadDynamicActionHang, hadFatalTaskErrorAndHaltOrder, hadStatMonitorError, initClientRuntime, initExecutionParameters, isFinished, pauseBlocking, pauseScheduling, pauseWaiting, printBlockingReport, printReport, printSchedulingReport, printWaitingReport, processDynamicActionError, reportResult, schedulerResult, setDynamicActionError, setDynamicActionHang, setStatMonitorError, setTermination, startClients, startClientsForced, stopClients, waitForClientsToFinish, waitForClientsToFinish, waitForClientToFinish

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ClientNameLockStepTaskScheduler

public ClientNameLockStepTaskScheduler(String name,
                                       Vector tasks,
                                       String purpose)

Creates a task scheduler by the given name for the purpose of executing the given set of start or end tasks in lock step.

Parameters:

name - a descriptive name of the tasks to use for logging

tasks - the tasks to be scheduled

Method Detail

executeTasks

protected boolean executeTasks()

Executes the tasks using the existing clients.

Overrides:

executeTasks in class ClientNameTaskScheduler

Returns:

true if there were no fatal task errors or hangs