Split an allocation policy into an allocator and a deallocator.

test/cctest/test-list.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 15 matching lines @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include <stdlib.h>
 #include <string.h>
 #include "v8.h"
 #include "cctest.h"
 
 using namespace v8::internal;
 
 // Use a testing allocator that clears memory before deletion.
-class ZeroingAllocationPolicy {
+class ZeroingAllocator {
  public:
-  static void* New(size_t size) {
+  void* New(size_t size) {
     // Stash the size in the first word to use for Delete.
     size_t true_size = size + sizeof(size_t);
     size_t* result = reinterpret_cast<size_t*>(malloc(true_size));
     if (result == NULL) return result;
     *result = true_size;
     return result + 1;
   }
+};
 
-  static void Delete(void* ptr) {
+
+class ZeroingDeallocator {
+ public:
+  void Delete(void* ptr) {
     size_t* true_ptr = reinterpret_cast<size_t*>(ptr) - 1;
     memset(true_ptr, 0, *true_ptr);
     free(true_ptr);
   }
 };
 
+
+struct ZeroingAllocationPolicy {
+  typedef ZeroingAllocator Allocator;
+  typedef ZeroingDeallocator Deallocator;
+};
+
 // Check that we can add (a reference to) an element of the list
 // itself.
 TEST(ListAdd) {
   // Add elements to the list to grow it to its capacity.
   List<int, ZeroingAllocationPolicy> list(4);
   list.Add(1);
   list.Add(2);
   list.Add(3);
   list.Add(4);
 
@@ skipping 90 matching lines @@
 
 TEST(DeleteEmpty) {
   {
     List<int>* list = new List<int>(0);
     delete list;
   }
   {
     List<int> list(0);
   }
 }