Reland of [heap] Fix CompactionSpace test and move to unittests

This reverts commit eddf90c4a7.

BUG=chromium:651354

Review-Url: https://codereview.chromium.org/2792063004
Cr-Commit-Position: refs/heads/master@{#44398}

src/heap/heap.h

@@ -746,8 +746,8 @@ class Heap {
   // when introducing gaps within pages. If slots could have been recorded in
   // the freed area, then pass ClearRecordedSlots::kYes as the mode. Otherwise,
   // pass ClearRecordedSlots::kNo.
-  HeapObject* CreateFillerObjectAt(Address addr, int size,
-                                   ClearRecordedSlots mode);
+  V8_EXPORT_PRIVATE HeapObject* CreateFillerObjectAt(Address addr, int size,
+                                                     ClearRecordedSlots mode);
 
   bool CanMoveObjectStart(HeapObject* object);
 

src/heap/spaces.h

@@ -807,7 +807,7 @@ class Page : public MemoryChunk {
 
   size_t ShrinkToHighWaterMark();
 
-  void CreateBlackArea(Address start, Address end);
+  V8_EXPORT_PRIVATE void CreateBlackArea(Address start, Address end);
 
 #ifdef DEBUG
   void Print();
@@ -2733,7 +2733,7 @@ class PauseAllocationObserversScope {
 // -----------------------------------------------------------------------------
 // Compaction space that is used temporarily during compaction.
 
-class CompactionSpace : public PagedSpace {
+class V8_EXPORT_PRIVATE CompactionSpace : public PagedSpace {
  public:
   CompactionSpace(Heap* heap, AllocationSpace id, Executability executable)
       : PagedSpace(heap, id, executable) {}

test/cctest/heap/test-spaces.cc

@@ -401,53 +401,6 @@ TEST(OldSpace) {
   delete memory_allocator;
 }
 
-
-TEST(CompactionSpace) {
-  Isolate* isolate = CcTest::i_isolate();
-  Heap* heap = isolate->heap();
-  MemoryAllocator* memory_allocator = new MemoryAllocator(isolate);
-  CHECK(memory_allocator != nullptr);
-  CHECK(memory_allocator->SetUp(heap->MaxReserved(), heap->MaxExecutableSize(),
-                                0));
-  TestMemoryAllocatorScope test_scope(isolate, memory_allocator);
-
-  CompactionSpace* compaction_space =
-      new CompactionSpace(heap, OLD_SPACE, NOT_EXECUTABLE);
-  CHECK(compaction_space != NULL);
-  CHECK(compaction_space->SetUp());
-
-  OldSpace* old_space = new OldSpace(heap, OLD_SPACE, NOT_EXECUTABLE);
-  CHECK(old_space != NULL);
-  CHECK(old_space->SetUp());
-
-  // Cannot loop until "Available()" since we initially have 0 bytes available
-  // and would thus neither grow, nor be able to allocate an object.
-  const int kNumObjects = 100;
-  const int kNumObjectsPerPage =
-      compaction_space->AreaSize() / kMaxRegularHeapObjectSize;
-  const int kExpectedPages =
-      (kNumObjects + kNumObjectsPerPage - 1) / kNumObjectsPerPage;
-  for (int i = 0; i < kNumObjects; i++) {
-    compaction_space->AllocateRawUnaligned(kMaxRegularHeapObjectSize)
-        .ToObjectChecked();
-  }
-  int pages_in_old_space = old_space->CountTotalPages();
-  int pages_in_compaction_space = compaction_space->CountTotalPages();
-  CHECK_EQ(pages_in_compaction_space, kExpectedPages);
-  CHECK_LE(pages_in_old_space, 1);
-
-  old_space->MergeCompactionSpace(compaction_space);
-  CHECK_EQ(old_space->CountTotalPages(),
-           pages_in_old_space + pages_in_compaction_space);
-
-  delete compaction_space;
-  delete old_space;
-
-  memory_allocator->TearDown();
-  delete memory_allocator;
-}
-
-
 TEST(LargeObjectSpace) {
   // This test does not initialize allocated objects, which confuses the
   // incremental marker.

test/unittests/BUILD.gn

@@ -109,6 +109,7 @@ v8_executable("unittests") {
     "heap/memory-reducer-unittest.cc",
     "heap/scavenge-job-unittest.cc",
     "heap/slot-set-unittest.cc",
+    "heap/spaces-unittest.cc",
     "heap/unmapper-unittest.cc",
     "interpreter/bytecode-array-builder-unittest.cc",
     "interpreter/bytecode-array-iterator-unittest.cc",

test/unittests/heap/spaces-unittest.cc

@@ -0,0 +1,50 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/heap/heap-inl.h"
+#include "src/heap/spaces-inl.h"
+#include "src/isolate.h"
+#include "test/unittests/test-utils.h"
+
+namespace v8 {
+namespace internal {
+
+typedef TestWithIsolate SpacesTest;
+
+TEST_F(SpacesTest, CompactionSpaceMerge) {
+  Heap* heap = i_isolate()->heap();
+  OldSpace* old_space = heap->old_space();
+  EXPECT_TRUE(old_space != NULL);
+
+  CompactionSpace* compaction_space =
+      new CompactionSpace(heap, OLD_SPACE, NOT_EXECUTABLE);
+  EXPECT_TRUE(compaction_space != NULL);
+  EXPECT_TRUE(compaction_space->SetUp());
+
+  // Cannot loop until "Available()" since we initially have 0 bytes available
+  // and would thus neither grow, nor be able to allocate an object.
+  const int kNumObjects = 10;
+  const int kNumObjectsPerPage =
+      compaction_space->AreaSize() / kMaxRegularHeapObjectSize;
+  const int kExpectedPages =
+      (kNumObjects + kNumObjectsPerPage - 1) / kNumObjectsPerPage;
+  for (int i = 0; i < kNumObjects; i++) {
+    HeapObject* object =
+        compaction_space->AllocateRawUnaligned(kMaxRegularHeapObjectSize)
+            .ToObjectChecked();
+    heap->CreateFillerObjectAt(object->address(), kMaxRegularHeapObjectSize,
+                               ClearRecordedSlots::kNo);
+  }
+  int pages_in_old_space = old_space->CountTotalPages();
+  int pages_in_compaction_space = compaction_space->CountTotalPages();
+  EXPECT_EQ(kExpectedPages, pages_in_compaction_space);
+  old_space->MergeCompactionSpace(compaction_space);
+  EXPECT_EQ(pages_in_old_space + pages_in_compaction_space,
+            old_space->CountTotalPages());
+
+  delete compaction_space;
+}
+
+}  // namespace internal
+}  // namespace v8

test/unittests/unittests.gyp

@@ -126,6 +126,7 @@
       'heap/heap-unittest.cc',
       'heap/scavenge-job-unittest.cc',
       'heap/slot-set-unittest.cc',
+      'heap/spaces-unittest.cc',
       'heap/unmapper-unittest.cc',
       'locked-queue-unittest.cc',
       'object-unittest.cc',