test/compiler/unsafe/JdkInternalMiscUnsafeAccessTestInt.java

@@ -38,10 +38,11 @@
 
 import static org.testng.Assert.*;
 
 public class JdkInternalMiscUnsafeAccessTestInt {
     static final int ITERS = Integer.getInteger("iters", 1);
+    static final int WEAK_ATTEMPTS = Integer.getInteger("weakAttempts", 10);
 
     static final jdk.internal.misc.Unsafe UNSAFE;
 
     static final long V_OFFSET;
 

@@ -249,26 +250,35 @@
             int x = UNSAFE.getInt(base, offset);
             assertEquals(x, 1, "failing compareAndExchangeRelease int value");
         }
 
         {
-            boolean r = UNSAFE.weakCompareAndSwapInt(base, offset, 1, 2);
-            assertEquals(r, true, "weakCompareAndSwap int");
+            boolean success = false;
+            for (int c = 0; c < WEAK_ATTEMPTS && !success; c++) {
+                success = UNSAFE.weakCompareAndSwapInt(base, offset, 1, 2);
+            }
+            assertEquals(success, true, "weakCompareAndSwap int");
             int x = UNSAFE.getInt(base, offset);
             assertEquals(x, 2, "weakCompareAndSwap int value");
         }
 
         {
-            boolean r = UNSAFE.weakCompareAndSwapIntAcquire(base, offset, 2, 1);
-            assertEquals(r, true, "weakCompareAndSwapAcquire int");
+            boolean success = false;
+            for (int c = 0; c < WEAK_ATTEMPTS && !success; c++) {
+                success = UNSAFE.weakCompareAndSwapIntAcquire(base, offset, 2, 1);
+            }
+            assertEquals(success, true, "weakCompareAndSwapAcquire int");
             int x = UNSAFE.getInt(base, offset);
             assertEquals(x, 1, "weakCompareAndSwapAcquire int");
         }
 
         {
-            boolean r = UNSAFE.weakCompareAndSwapIntRelease(base, offset, 1, 2);
-            assertEquals(r, true, "weakCompareAndSwapRelease int");
+            boolean success = false;
+            for (int c = 0; c < WEAK_ATTEMPTS && !success; c++) {
+                success = UNSAFE.weakCompareAndSwapIntRelease(base, offset, 1, 2);
+            }
+            assertEquals(success, true, "weakCompareAndSwapRelease int");
             int x = UNSAFE.getInt(base, offset);
             assertEquals(x, 2, "weakCompareAndSwapRelease int");
         }
 
         // Compare set and get

@@ -284,11 +294,11 @@
         // get and add, add and get
         {
             int o = UNSAFE.getAndAddInt(base, offset, 2);
             assertEquals(o, 1, "getAndAdd int");
             int x = UNSAFE.getInt(base, offset);
-            assertEquals(x, 1 + 2, "weakCompareAndSwapRelease int");
+            assertEquals(x, 1 + 2, "getAndAdd int");
         }
     }
 
     static void testAccess(long address) {
         // Plain

@@ -298,6 +308,5 @@
             assertEquals(x, 1, "set int value");
         }
     }
 }
 
-