Revert change r3004, issue http://codereview.chromium.org/244022, because Lin...

test/cctest/test-alloc.cc

Index: test/cctest/test-alloc.cc
===================================================================
--- test/cctest/test-alloc.cc	(revision 3005)
+++ test/cctest/test-alloc.cc	(working copy)
@@ -144,65 +144,3 @@
   CHECK_EQ(42, result->Int32Value());
   env->Exit();
 }
-
-
-// CodeRange test.
-// Tests memory management in a CodeRange by allocating and freeing blocks,
-// using a pseudorandom generator to choose block sizes geometrically
-// distributed between 2 * Page::kPageSize and 2^5 + 1 * Page::kPageSize.
-// Ensure that the freed chunks are collected and reused by allocating (in
-// total) more than the size of the CodeRange.
-
-// This pseudorandom generator does not need to be particularly good.
-// Use the lower half of the V8::Random() generator.
-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)
-      : base(base_arg), size(size_arg) {}
-
-  void *base;
-  int size;
-};
-
-
-TEST(CodeRange) {
-  const int code_range_size = 16*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)) +
-           Pseudorandom() % 5000 + 1;
-      size_t allocated = 0;
-      void* base = CodeRange::AllocateRawMemory(requested, &allocated);
-      blocks.Add(Block(base, allocated));
-      current_allocated += allocated;
-      total_allocated += 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();
-}