MPP No Trace (#2869)

arrow-libs/core/arrow-core/api/arrow-core.api

@@ -2592,6 +2592,11 @@ public final class arrow/core/continuations/AtomicRefKt {
 	public static final fun updateAndGet (Ljava/util/concurrent/atomic/AtomicReference;Lkotlin/jvm/functions/Function1;)Ljava/lang/Object;
 }
 
+public class arrow/core/continuations/CancellationExceptionNoTrace : java/util/concurrent/CancellationException {
+	public fun <init> ()V
+	public fun fillInStackTrace ()Ljava/lang/Throwable;
+}
+
 public final class arrow/core/continuations/Eager : arrow/core/continuations/ShiftCancellationException {
 	public fun <init> (Larrow/core/continuations/Token;Ljava/lang/Object;Lkotlin/jvm/functions/Function1;)V
 	public final fun getRecover ()Lkotlin/jvm/functions/Function1;
@@ -3015,7 +3020,7 @@ public final class arrow/core/continuations/ResultKt {
 	public static final fun toResult (Larrow/core/continuations/Effect;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 }
 
-public abstract class arrow/core/continuations/ShiftCancellationException : java/util/concurrent/CancellationException {
+public abstract class arrow/core/continuations/ShiftCancellationException : arrow/core/continuations/CancellationExceptionNoTrace {
 }
 
 public final class arrow/core/continuations/Suspend : arrow/core/continuations/ShiftCancellationException {

arrow-libs/core/arrow-core/src/commonMain/kotlin/arrow/core/continuations/Effect.kt

@@ -679,7 +679,9 @@ public interface Effect<out R, out A> {
  * code, you can use this type to differentiate between a foreign [CancellationException] and the
  * one from [Effect].
  */
-public sealed class ShiftCancellationException : CancellationException("Shifted Continuation")
+public sealed class ShiftCancellationException : CancellationExceptionNoTrace()
+
+public expect open class CancellationExceptionNoTrace() : CancellationException
 
 /**
  * Holds `R` and `suspend (R) -> B`, the exception that wins the race, will get to execute

arrow-libs/core/arrow-core/src/jsMain/kotlin/arrow/core/continuations/CancellationExceptionNoTrace.kt

@@ -0,0 +1,5 @@
+package arrow.core.continuations
+
+import kotlin.coroutines.cancellation.CancellationException
+
+public actual open class CancellationExceptionNoTrace : CancellationException("Shifted Continuation")

arrow-libs/core/arrow-core/src/jvmMain/kotlin/arrow/core/continuations/CancellationExceptionNoTrace.kt

@@ -0,0 +1,16 @@
+package arrow.core.continuations
+
+import kotlin.coroutines.cancellation.CancellationException
+
+/*
+ * Inspired by KotlinX Coroutines:
+ * https://github.com/Kotlin/kotlinx.coroutines/blob/3788889ddfd2bcfedbff1bbca10ee56039e024a2/kotlinx-coroutines-core/jvm/src/Exceptions.kt#L29
+ */
+public actual open class CancellationExceptionNoTrace : CancellationException("Shifted Continuation") {
+  override fun fillInStackTrace(): Throwable {
+    // Prevent Android <= 6.0 bug.
+    stackTrace = emptyArray()
+    // We don't need stacktrace on shift, it hurts performance.
+    return this
+  }
+}

arrow-libs/core/arrow-core/src/nativeMain/kotlin/arrow/core/continuations/CancellationExceptionNoTrace.kt

@@ -0,0 +1,5 @@
+package arrow.core.continuations
+
+import kotlin.coroutines.cancellation.CancellationException
+
+public actual open class CancellationExceptionNoTrace : CancellationException("Shifted Continuation")