refactor: Use InstantSource as time source

This change updates the modules of OpenDC to always accept
the `InstantSource` interface as source of time. Previously we used
`java.time.Clock`, but this class is bound to a time zone which does not
make sense for our use-cases.

Since `java.time.Clock` implements `java.time.InstantSource`, it can be
used in places that require an `InstantSource` as parameter. Conversion
from `InstantSource` to `Clock` is also possible by invoking
`InstantSource#withZone`.

2 files changed, 4 insertions, 4 deletions

diff --git a/opendc-experiments/opendc-experiments-tf20/src/main/kotlin/org/opendc/experiments/tf20/core/SimTFDevice.kt b/opendc-experiments/opendc-experiments-tf20/src/main/kotlin/org/opendc/experiments/tf20/core/SimTFDevice.kt
index eb308970..51f6e763 100644
--- a/opendc-experiments/opendc-experiments-tf20/src/main/kotlin/org/opendc/experiments/tf20/core/SimTFDevice.kt
+++ b/opendc-experiments/opendc-experiments-tf20/src/main/kotlin/org/opendc/experiments/tf20/core/SimTFDevice.kt
@@ -42,7 +42,7 @@ import org.opendc.simulator.flow2.FlowEngine
 import org.opendc.simulator.flow2.FlowStage
 import org.opendc.simulator.flow2.FlowStageLogic
 import org.opendc.simulator.flow2.OutPort
-import java.time.Clock
+import java.time.InstantSource
 import java.util.ArrayDeque
 import java.util.UUID
 import kotlin.coroutines.Continuation
@@ -58,7 +58,7 @@ public class SimTFDevice(
     override val uid: UUID,
     override val isGpu: Boolean,
     context: CoroutineContext,
-    clock: Clock,
+    clock: InstantSource,
     pu: ProcessingUnit,
     private val memory: MemoryUnit,
     powerModel: CpuPowerModel
diff --git a/opendc-experiments/opendc-experiments-tf20/src/main/kotlin/org/opendc/experiments/tf20/network/NetworkController.kt b/opendc-experiments/opendc-experiments-tf20/src/main/kotlin/org/opendc/experiments/tf20/network/NetworkController.kt
index 7d65a674..6fcdf513 100644
--- a/opendc-experiments/opendc-experiments-tf20/src/main/kotlin/org/opendc/experiments/tf20/network/NetworkController.kt
+++ b/opendc-experiments/opendc-experiments-tf20/src/main/kotlin/org/opendc/experiments/tf20/network/NetworkController.kt
@@ -24,14 +24,14 @@ package org.opendc.experiments.tf20.network
 
 import kotlinx.coroutines.channels.Channel
 import org.opendc.common.util.TimerScheduler
-import java.time.Clock
+import java.time.InstantSource
 import kotlin.coroutines.CoroutineContext
 
 /**
  * The network controller represents a simple network model between the worker and master nodes during
  * TensorFlow execution.
  */
-public class NetworkController(context: CoroutineContext, clock: Clock) : AutoCloseable {
+public class NetworkController(context: CoroutineContext, clock: InstantSource) : AutoCloseable {
     /**
      * The scheduler for the message.
      */