[cctest] Add tests for aborting compaction of pages

Tests for
* aborting a full page.
* partially aborting a page.
* partially aborting a page with pointers between aborted pages.
* partially aborting a page with store buffer entries.

Also introduces ShouldForceOOM() which prohibits a PagedSpace from expanding.
Compaction spaces refer to the corresponding actual space.

BUG=chromium:524425
LOG=N

Review URL: https://codereview.chromium.org/1511933002

Cr-Commit-Position: refs/heads/master@{#32783}

src/heap/heap.cc

@@ -164,7 +164,8 @@ Heap::Heap()
       deserialization_complete_(false),
       concurrent_sweeping_enabled_(false),
       strong_roots_list_(NULL),
-      array_buffer_tracker_(NULL) {
+      array_buffer_tracker_(NULL),
+      force_oom_(false) {
 // Allow build-time customization of the max semispace size. Building
 // V8 with snapshots and a non-default max semispace size is much
 // easier if you can define it as part of the build environment.

src/heap/heap.h

@@ -817,6 +817,7 @@ class Heap {
   // TODO(hpayer): There is still a missmatch between capacity and actual
   // committed memory size.
   bool CanExpandOldGeneration(int size) {
+    if (force_oom_) return false;
     return (CommittedOldGenerationMemory() + size) < MaxOldGenerationSize();
   }
 
@@ -2119,6 +2120,8 @@ class Heap {
 
   MUST_USE_RESULT AllocationResult InternalizeString(String* str);
 
+  void set_force_oom(bool value) { force_oom_ = value; }
+
   // The amount of external memory registered through the API kept alive
   // by global handles
   int64_t amount_of_external_allocated_memory_;
@@ -2369,6 +2372,9 @@ class Heap {
 
   ArrayBufferTracker* array_buffer_tracker_;
 
+  // Used for testing purposes.
+  bool force_oom_;
+
   // Classes in "heap" can be friends.
   friend class AlwaysAllocateScope;
   friend class GCCallbacksScope;

test/cctest/cctest.gyp

@@ -96,6 +96,7 @@
         'gay-shortest.cc',
         'heap/heap-tester.h',
         'heap/test-alloc.cc',
+        'heap/test-compaction.cc',
         'heap/test-heap.cc',
         'heap/test-incremental-marking.cc',
         'heap/test-mark-compact.cc',

test/cctest/heap/heap-tester.h

@@ -10,20 +10,24 @@
 
 // Tests that should have access to private methods of {v8::internal::Heap}.
 // Those tests need to be defined using HEAP_TEST(Name) { ... }.
-#define HEAP_TEST_METHODS(V)            \
-  V(CompactionSpaceDivideMultiplePages) \
-  V(CompactionSpaceDivideSinglePage)    \
-  V(GCFlags)                            \
-  V(MarkCompactCollector)               \
-  V(NoPromotion)                        \
-  V(NumberStringCacheSize)              \
-  V(ObjectGroups)                       \
-  V(Promotion)                          \
-  V(Regression39128)                    \
-  V(ResetWeakHandle)                    \
-  V(StressHandles)                      \
-  V(TestMemoryReducerSampleJsCalls)     \
-  V(TestSizeOfObjects)                  \
+#define HEAP_TEST_METHODS(V)                              \
+  V(CompactionFullAbortedPage)                            \
+  V(CompactionPartiallyAbortedPage)                       \
+  V(CompactionPartiallyAbortedPageIntraAbortedPointers)   \
+  V(CompactionPartiallyAbortedPageWithStoreBufferEntries) \
+  V(CompactionSpaceDivideMultiplePages)                   \
+  V(CompactionSpaceDivideSinglePage)                      \
+  V(GCFlags)                                              \
+  V(MarkCompactCollector)                                 \
+  V(NoPromotion)                                          \
+  V(NumberStringCacheSize)                                \
+  V(ObjectGroups)                                         \
+  V(Promotion)                                            \
+  V(Regression39128)                                      \
+  V(ResetWeakHandle)                                      \
+  V(StressHandles)                                        \
+  V(TestMemoryReducerSampleJsCalls)                       \
+  V(TestSizeOfObjects)                                    \
   V(WriteBarriersInCopyJSObject)
 
 

test/cctest/heap/utils-inl.h

@@ -16,16 +16,15 @@ namespace v8 {
 namespace internal {
 
 static int LenFromSize(int size) {
-  return (size - i::FixedArray::kHeaderSize) / i::kPointerSize;
+  return (size - FixedArray::kHeaderSize) / kPointerSize;
 }
 
 
-static inline void CreatePadding(i::Heap* heap, int padding_size,
-                                 i::PretenureFlag tenure) {
-  const int max_number_of_objects = 20;
-  v8::internal::Handle<v8::internal::FixedArray>
-      big_objects[max_number_of_objects];
-  i::Isolate* isolate = heap->isolate();
+static inline std::vector<Handle<FixedArray>> CreatePadding(
+    Heap* heap, int padding_size, PretenureFlag tenure,
+    int object_size = Page::kMaxRegularHeapObjectSize) {
+  std::vector<Handle<FixedArray>> handles;
+  Isolate* isolate = heap->isolate();
   int allocate_memory;
   int length;
   int free_memory = padding_size;
@@ -41,9 +40,10 @@ static inline void CreatePadding(i::Heap* heap, int padding_size,
                          *heap->new_space()->allocation_top_address());
     CHECK(padding_size <= current_free_memory || current_free_memory == 0);
   }
-  for (int i = 0; i < max_number_of_objects && free_memory > 0; i++) {
-    if (free_memory > i::Page::kMaxRegularHeapObjectSize) {
-      allocate_memory = i::Page::kMaxRegularHeapObjectSize;
+  while (free_memory > 0) {
+    // for (int i = 0; i < max_number_of_objects && free_memory > 0; i++) {
+    if (free_memory > object_size) {
+      allocate_memory = object_size;
       length = LenFromSize(allocate_memory);
     } else {
       allocate_memory = free_memory;
@@ -55,11 +55,12 @@ static inline void CreatePadding(i::Heap* heap, int padding_size,
         break;
       }
     }
-    big_objects[i] = isolate->factory()->NewFixedArray(length, tenure);
-    CHECK((tenure == i::NOT_TENURED && heap->InNewSpace(*big_objects[i])) ||
-          (tenure == i::TENURED && heap->InOldSpace(*big_objects[i])));
+    handles.push_back(isolate->factory()->NewFixedArray(length, tenure));
+    CHECK((tenure == NOT_TENURED && heap->InNewSpace(*handles.back())) ||
+          (tenure == TENURED && heap->InOldSpace(*handles.back())));
     free_memory -= allocate_memory;
   }
+  return handles;
 }