Refactor the use of runFinalization in tests and benchmarks (apache#12768)

This commit refactors the usage of the deprecated System::runFinalization in tests and benchmarks, so that narrowly targeted suppressions can be added.

Author: ChrisHegarty

lucene/benchmark/src/java/org/apache/lucene/benchmark/byTask/PerfRunData.java

@@ -46,6 +46,7 @@
 import org.apache.lucene.store.Directory;
 import org.apache.lucene.store.FSDirectory;
 import org.apache.lucene.util.IOUtils;
+import org.apache.lucene.util.SuppressForbidden;
 
 /**
  * Data maintained by a performance test run.
@@ -204,7 +205,7 @@ public void reinit(boolean eraseIndex) throws Exception {
     resetInputs();
 
     // release unused stuff
-    System.runFinalization();
+    runFinalization();
     System.gc();
 
     // Re-init clock
@@ -482,4 +483,10 @@ public synchronized QueryMaker getQueryMaker(ReadTask readTask) {
   public Map<String, AnalyzerFactory> getAnalyzerFactories() {
     return analyzerFactories;
   }
+
+  @SuppressWarnings("removal")
+  @SuppressForbidden(reason = "requires to run finalization")
+  private static void runFinalization() {
+    System.runFinalization();
+  }
 }

lucene/core/src/test/org/apache/lucene/util/TestWeakIdentityMap.java

@@ -119,7 +119,7 @@ public void testSimpleHashMap() {
     int size = map.size();
     for (int i = 0; size > 0 && i < 10; i++)
       try {
-        System.runFinalization();
+        runFinalization();
         System.gc();
         int newSize = map.size();
         assertTrue("previousSize(" + size + ")>=newSize(" + newSize + ")", size >= newSize);
@@ -232,7 +232,7 @@ public void run() {
     int size = map.size();
     for (int i = 0; size > 0 && i < 10; i++)
       try {
-        System.runFinalization();
+        runFinalization();
         System.gc();
         int newSize = map.size();
         assertTrue("previousSize(" + size + ")>=newSize(" + newSize + ")", size >= newSize);
@@ -252,4 +252,10 @@ public void run() {
           InterruptedException ie) {
       }
   }
+
+  @SuppressWarnings("removal")
+  @SuppressForbidden(reason = "requires to run finalization")
+  private static void runFinalization() {
+    System.runFinalization();
+  }
 }