Simpler pointer operations

Author: chrisseaton

src/main/java/org/truffleruby/extra/ffi/Pointer.java

@@ -60,10 +60,6 @@ public Pointer(long address, long size) {
         this.size = size;
     }
 
-    public Pointer realloc(long size) {
-        return new Pointer(UNSAFE.reallocateMemory(address, size));
-    }
-
     public void writeByte(long offset, byte b) {
         assert address + offset != 0;
         UNSAFE.putByte(address + offset, b);
@@ -316,6 +312,18 @@ public int hashCode() {
         return Long.hashCode(address);
     }
 
+    public static long rawMalloc(long size) {
+        return UNSAFE.allocateMemory(size);
+    }
+
+    public static long rawRealloc(long address, long size) {
+        return UNSAFE.reallocateMemory(address, size);
+    }
+
+    public static void rawFree(long address) {
+        UNSAFE.freeMemory(address);
+    }
+
     @SuppressWarnings("restriction")
     private static Unsafe getUnsafe() {
         try {

src/main/java/org/truffleruby/extra/ffi/PointerNodes.java

@@ -932,8 +932,8 @@ public DynamicObject writePointer(long address, long value) {
     public static abstract class PointerRawMallocPrimitiveNode extends PrimitiveArrayArgumentsNode {
 
         @Specialization
-        public long malloc(long size) {
-            return Pointer.malloc(size).getAddress();
+        public long realloc(long size) {
+            return Pointer.rawMalloc(size);
         }
 
     }
@@ -943,7 +943,7 @@ public static abstract class PointerRawReallocPrimitiveNode extends PrimitiveArr
 
         @Specialization
         public long malloc(long address, long size) {
-            return new Pointer(address).realloc(size).getAddress();
+            return Pointer.rawRealloc(address, size);
         }
 
     }
@@ -953,7 +953,7 @@ public static abstract class PointerRawFreePrimitiveNode extends PrimitiveArrayA
 
         @Specialization
         public long free(long address) {
-            new Pointer(address).free();
+            Pointer.rawFree(address);
             return address;
         }