From 766b41566f4cf8297202147d789e135a76041ed4 Mon Sep 17 00:00:00 2001
From: Fabian Mastenbroek <mail.fabianm@gmail.com>
Date: Sun, 22 Aug 2021 13:21:53 +0200
Subject: perf(simulator): Prevent counter update without work

This change implements a performance improvement by preventing updates
on the resource counters in case no work was performed in the last
cycle.
---
 .../org/opendc/simulator/resources/SimAbstractResourceProvider.kt     | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/opendc-simulator/opendc-simulator-resources/src/main/kotlin/org/opendc/simulator/resources/SimAbstractResourceProvider.kt b/opendc-simulator/opendc-simulator-resources/src/main/kotlin/org/opendc/simulator/resources/SimAbstractResourceProvider.kt
index c1b1450e..2ceb1e3c 100644
--- a/opendc-simulator/opendc-simulator-resources/src/main/kotlin/org/opendc/simulator/resources/SimAbstractResourceProvider.kt
+++ b/opendc-simulator/opendc-simulator-resources/src/main/kotlin/org/opendc/simulator/resources/SimAbstractResourceProvider.kt
@@ -88,6 +88,10 @@ public abstract class SimAbstractResourceProvider(
      * Update the counters of the resource provider.
      */
     protected fun updateCounters(ctx: SimResourceContext, work: Double) {
+        if (work <= 0.0) {
+           return 
+        }
+
         val counters = _counters
         val remainingWork = ctx.remainingWork
         counters.demand += work
-- 
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