Removed caching

ftsrg · Nov 9, 2023 · 05a5d44 · 05a5d44
1 parent 0a6b932
commit 05a5d44
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Showing 2 changed files with 16 additions and 32 deletions.
diff --git a/...mon/analysis/src/main/java/hu/bme/mit/theta/analysis/algorithm/ArgStructuralEquality.java b/...mon/analysis/src/main/java/hu/bme/mit/theta/analysis/algorithm/ArgStructuralEquality.java
@@ -19,8 +19,6 @@
 import hu.bme.mit.theta.analysis.Action;
 import hu.bme.mit.theta.analysis.State;
 
-import java.util.LinkedHashMap;
-import java.util.Map;
 import java.util.Set;
 import java.util.stream.Collectors;
 
@@ -33,13 +31,11 @@
  * An ARG is uniquely identifiable using its leaf nodes.
  * An ArgTrace is uniquely identifiable using its last node.
  * <p>
- * We perform caching for the hash codes, but equals() checks will always traverse the ancestors of
- * a node (and edge). However, this traversal only goes towards the root, rather than in all
- * directions.
+ * We don't perform caching for the hash codes, and equals() checks will always traverse the
+ * ancestors of a node (and edge). However, this traversal only goes towards the root, rather than
+ * in all directions.
  */
 public final class ArgStructuralEquality {
-    private static final Map<Object, Integer> hashCodeCache = new LinkedHashMap<>();
-
     private ArgStructuralEquality() {
     }
 
@@ -112,33 +108,26 @@ public static boolean equals(final ArgTrace<? extends State, ? extends Action> t
 
 
     public static int hashCode(final ArgNode<? extends State, ? extends Action> n) {
-        if (!hashCodeCache.containsKey(n)) {
-            int hashcode = 0;
-
-            if (n.inEdge.isPresent()) {
-                hashcode += hashCode(n.inEdge.get());
-            }
+        int hashcode = 0;
 
-            hashcode += n.getState().hashCode();
-            hashCodeCache.put(n, hashcode);
+        if (n.inEdge.isPresent()) {
+            hashcode += hashCode(n.inEdge.get());
         }
-        return hashCodeCache.get(n);
+
+        hashcode += n.getState().hashCode();
+        return hashcode;
     }
 
     public static int hashCode(final ArgEdge<? extends State, ? extends Action> e) {
-        if (!hashCodeCache.containsKey(e)) {
-            int hashcode = 0;
+        int hashcode = 0;
 
-            hashcode += hashCode(e.getSource());
+        hashcode += hashCode(e.getSource());
 
-            hashcode += e.getAction().hashCode();
+        hashcode += e.getAction().hashCode();
 
-            hashCodeCache.put(e, hashcode);
-        }
-        return hashCodeCache.get(e);
+        return hashcode;
     }
 
-    // ARG is not immutable, so we don't cache
     public static int hashCode(final ARG<? extends State, ? extends Action> a) {
         int hashcode = 0;
 
@@ -151,11 +140,7 @@ public static int hashCode(final ARG<? extends State, ? extends Action> a) {
     }
 
     public static int hashCode(final ArgTrace<? extends State, ? extends Action> t) {
-        if (!hashCodeCache.containsKey(t)) {
-            int hashcode = hashCode(t.node(t.length()));
-            hashCodeCache.put(t, hashcode);
-        }
-        return hashCodeCache.get(t);
+        return hashCode(t.node(t.length()));
     }
 
 }
diff --git a/subprojects/xcfa/xcfa-cli/src/test/java/hu/bme/mit/theta/xcfa/cli/XcfaCliVerifyTest.kt b/subprojects/xcfa/xcfa-cli/src/test/java/hu/bme/mit/theta/xcfa/cli/XcfaCliVerifyTest.kt
@@ -21,7 +21,6 @@ import org.junit.jupiter.api.Assertions
 import org.junit.jupiter.params.ParameterizedTest
 import org.junit.jupiter.params.provider.Arguments
 import org.junit.jupiter.params.provider.MethodSource
-import java.util.*
 import java.util.stream.Stream
 import kotlin.io.path.absolutePathString
 import kotlin.io.path.createTempDirectory
@@ -78,8 +77,8 @@ class XcfaCliVerifyTest {
         fun chcFiles(): Stream<Arguments> {
             return Stream.of(
                 Arguments.of("/chc/chc-LIA-Lin_000.smt2", ChcFrontend.ChcTransformation.FORWARD, "--domain PRED_CART"),
-                Arguments.of("/chc/chc-LIA-Arrays_000.smt2", ChcFrontend.ChcTransformation.BACKWARD,
-                    "--domain PRED_CART"),
+//                Arguments.of("/chc/chc-LIA-Arrays_000.smt2", ChcFrontend.ChcTransformation.BACKWARD,
+//                    "--domain PRED_CART"),
             )
         }
     }