[heap] Introduce enum of garbage collection reasons.

test/cctest/heap/test-array-buffer-tracker.cc

 // Copyright 2016 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/api.h"
 #include "src/heap/array-buffer-tracker.h"
 #include "src/isolate.h"
 #include "test/cctest/cctest.h"
 #include "test/cctest/heap/heap-utils.h"
 
@@ skipping 112 matching lines @@
   Local<v8::ArrayBuffer> ab1 = v8::ArrayBuffer::New(isolate, 100);
   Handle<JSArrayBuffer> buf1 = v8::Utils::OpenHandle(*ab1);
   CHECK(IsTracked(*buf1));
   heap::GcAndSweep(heap, NEW_SPACE);
   heap::GcAndSweep(heap, NEW_SPACE);
 
   Page* page_before_gc = Page::FromAddress(buf1->address());
   page_before_gc->SetFlag(MemoryChunk::FORCE_EVACUATION_CANDIDATE_FOR_TESTING);
   CHECK(IsTracked(*buf1));
 
-  heap->CollectAllGarbage();
+  CcTest::CollectAllGarbage(i::Heap::kFinalizeIncrementalMarkingMask);
 
   Page* page_after_gc = Page::FromAddress(buf1->address());
   CHECK(IsTracked(*buf1));
 
   CHECK_NE(page_before_gc, page_after_gc);
 }
 
 TEST(ArrayBuffer_UnregisterDuringSweep) {
 // Regular pages in old space (without compaction) are processed concurrently
 // in the sweeper. If we happen to unregister a buffer (either explicitly, or
@@ skipping 26 matching lines @@
       CHECK(IsTracked(*buf));
       CHECK(IsTracked(*buf));
       heap::GcAndSweep(heap, NEW_SPACE);
       CHECK(IsTracked(*buf));
       CHECK(IsTracked(*buf));
       heap::GcAndSweep(heap, NEW_SPACE);
       CHECK(IsTracked(*buf));
       CHECK(IsTracked(*buf2));
     }
 
-    heap->CollectGarbage(OLD_SPACE);
+    CcTest::CollectGarbage(OLD_SPACE);
     // |Externalize| will cause the buffer to be |Unregister|ed. Without
     // barriers and proper synchronization this will trigger a data race on
     // TSAN.
     v8::ArrayBuffer::Contents contents = ab->Externalize();
     heap->isolate()->array_buffer_allocator()->Free(contents.Data(),
                                                     contents.ByteLength());
   }
 }
 
 TEST(ArrayBuffer_NonLivePromotion) {
@@ skipping 120 matching lines @@
     Local<v8::ArrayBuffer> ab2 = v8::ArrayBuffer::New(isolate, 100);
     Handle<JSArrayBuffer> buf2 = v8::Utils::OpenHandle(*ab2);
     CHECK_NE(Page::FromAddress(buf1->address()),
              Page::FromAddress(buf2->address()));
     heap::GcAndSweep(heap, OLD_SPACE);
   }
 }
 
 }  // namespace internal
 }  // namespace v8