Refactor MemoryAllocator to allow big normal pages

test/cctest/test-alloc.cc

 // Copyright 2007-2008 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 155 matching lines @@
 unsigned int Pseudorandom() {
   static uint32_t lo = 2345;
   lo = 18273 * (lo & 0xFFFF) + (lo >> 16);  // Provably not 0.
   return lo & 0xFFFF;
 }
 
 
 // Plain old data class.  Represents a block of allocated memory.
 class Block {
  public:
-  Block(void* base_arg, int size_arg)
+  Block(Address base_arg, int size_arg)
       : base(base_arg), size(size_arg) {}
 
-  void *base;
+  Address base;
   int size;
 };
 
 
 TEST(CodeRange) {
-  const int code_range_size = 16*MB;
+  const int code_range_size = 32*MB;
   CodeRange::Setup(code_range_size);
   int current_allocated = 0;
   int total_allocated = 0;
   List<Block> blocks(1000);
 
   while (total_allocated < 5 * code_range_size) {
     if (current_allocated < code_range_size / 10) {
       // Allocate a block.
-      // Geometrically distributed sizes, greater than Page::kPageSize.
-      size_t requested = (Page::kPageSize << (Pseudorandom() % 6)) +
+      // Geometrically distributed sizes, greater than Page::kMaxHeapObjectSize.
+      // TODO (gc) instead of using 3 use some contant based on code_range_size
+      // kMaxHeapObjectSize.
+      size_t requested = (Page::kMaxHeapObjectSize << (Pseudorandom() % 3)) +
            Pseudorandom() % 5000 + 1;
       size_t allocated = 0;
-      void* base = CodeRange::AllocateRawMemory(requested, &allocated);
+      Address base = CodeRange::AllocateRawMemory(requested, &allocated);
       blocks.Add(Block(base, static_cast<int>(allocated)));
       current_allocated += static_cast<int>(allocated);
       total_allocated += static_cast<int>(allocated);
     } else {
       // Free a block.
       int index = Pseudorandom() % blocks.length();
       CodeRange::FreeRawMemory(blocks[index].base, blocks[index].size);
       current_allocated -= blocks[index].size;
       if (index < blocks.length() - 1) {
         blocks[index] = blocks.RemoveLast();
       } else {
         blocks.RemoveLast();
       }
     }
   }
 
   CodeRange::TearDown();
 }