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`.

1 files changed, 2 insertions, 2 deletions

diff --git a/opendc-common/src/main/kotlin/org/opendc/common/util/Pacer.kt b/opendc-common/src/main/kotlin/org/opendc/common/util/Pacer.kt
index edf607d2..b6141db1 100644
--- a/opendc-common/src/main/kotlin/org/opendc/common/util/Pacer.kt
+++ b/opendc-common/src/main/kotlin/org/opendc/common/util/Pacer.kt
@@ -26,7 +26,7 @@ import kotlinx.coroutines.Delay
 import kotlinx.coroutines.DisposableHandle
 import kotlinx.coroutines.InternalCoroutinesApi
 import java.lang.Runnable
-import java.time.Clock
+import java.time.InstantSource
 import kotlin.coroutines.ContinuationInterceptor
 import kotlin.coroutines.CoroutineContext
 
@@ -40,7 +40,7 @@ import kotlin.coroutines.CoroutineContext
  */
 public class Pacer(
     private val context: CoroutineContext,
-    private val clock: Clock,
+    private val clock: InstantSource,
     private val quantum: Long,
     private val process: (Long) -> Unit
 ) {