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/*
* MIT License
*
* Copyright (c) 2017 atlarge-research
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package nl.atlarge.opendc.workload
/**
* A task represents some computation that is part of a [Job].
*
* @author Fabian Mastenbroek (f.s.mastenbroek@student.tudelft.nl)
*/
data class Task(
val id: Int,
val dependencies: Set<Task>,
val flops: Long
) {
/**
* The remaining amount of flops to compute.
*/
var remaining: Long = flops
private set
/**
* A flag to indicate whether the task is finished.
*/
var finished: Boolean = false
private set
/**
* Determine whether the task is ready to be processed.
*
* @return `true` if the task is ready to be processed, `false` otherwise.
*/
fun isReady() = dependencies.all { it.finished }
/**
* Consume the given amount of flops of this task.
*
* @param flops The total amount of flops to consume.
*/
fun consume(flops: Long) {
if (finished)
return
if (remaining <= flops) {
finished = true
remaining = 0
} else {
remaining -= flops
}
}
}
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