Revert of "[heap] Fine-grained JSArrayBuffer tracking"

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

Index: test/cctest/heap/test-array-buffer-tracker.cc
diff --git a/test/cctest/heap/test-array-buffer-tracker.cc b/test/cctest/heap/test-array-buffer-tracker.cc
deleted file mode 100644
index 0e8b65cd2b028478adbc8215bf8a3fd768a02ecc..0000000000000000000000000000000000000000
--- a/test/cctest/heap/test-array-buffer-tracker.cc
+++ /dev/null
@@ -1,206 +0,0 @@
-// 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/heap/array-buffer-tracker-inl.h"
-#include "src/heap/array-buffer-tracker.h"
-#include "test/cctest/cctest.h"
-#include "test/cctest/heap/heap-utils.h"
-
-namespace {
-
-typedef i::LocalArrayBufferTracker LocalTracker;
-
-void VerifyTrackedInNewSpace(i::JSArrayBuffer* buf) {
-  CHECK(i::Page::FromAddress(buf->address())->InNewSpace());
-  CHECK(i::Page::FromAddress(buf->address())
-            ->local_tracker<i::Page::kCreateIfNotPresent>()
-            ->IsTracked(buf));
-}
-
-void VerifyTrackedInOldSpace(i::JSArrayBuffer* buf) {
-  CHECK(!i::Page::FromAddress(buf->address())->InNewSpace());
-  CHECK(i::Page::FromAddress(buf->address())
-            ->local_tracker<i::Page::kCreateIfNotPresent>()
-            ->IsTracked(buf));
-}
-
-void VerifyUntracked(i::JSArrayBuffer* buf) {
-  CHECK(!i::Page::FromAddress(buf->address())
-             ->local_tracker<i::Page::kCreateIfNotPresent>()
-             ->IsTracked(buf));
-}
-
-}  // namespace
-
-namespace v8 {
-namespace internal {
-
-// The following tests make sure that JSArrayBuffer tracking works expected when
-// moving the objects through various spaces during GC phases.
-
-TEST(ArrayBuffer_OnlyMC) {
-  CcTest::InitializeVM();
-  LocalContext env;
-  v8::Isolate* isolate = env->GetIsolate();
-  Heap* heap = reinterpret_cast<Isolate*>(isolate)->heap();
-
-  JSArrayBuffer* raw_ab = nullptr;
-  {
-    v8::HandleScope handle_scope(isolate);
-    Local<v8::ArrayBuffer> ab = v8::ArrayBuffer::New(isolate, 100);
-    Handle<JSArrayBuffer> buf = v8::Utils::OpenHandle(*ab);
-    VerifyTrackedInNewSpace(*buf);
-    heap::GcAndSweep(heap, OLD_SPACE);
-    VerifyTrackedInNewSpace(*buf);
-    heap::GcAndSweep(heap, OLD_SPACE);
-    VerifyTrackedInOldSpace(*buf);
-    raw_ab = *buf;
-    // Prohibit page from being released.
-    Page::FromAddress(buf->address())->MarkNeverEvacuate();
-  }
-  // 2 GCs are needed because we promote to old space as live, meaning that
-  // we will survive one GC.
-  heap::GcAndSweep(heap, OLD_SPACE);
-  heap::GcAndSweep(heap, OLD_SPACE);
-  VerifyUntracked(raw_ab);
-}
-
-TEST(ArrayBuffer_OnlyScavenge) {
-  CcTest::InitializeVM();
-  LocalContext env;
-  v8::Isolate* isolate = env->GetIsolate();
-  Heap* heap = reinterpret_cast<Isolate*>(isolate)->heap();
-
-  JSArrayBuffer* raw_ab = nullptr;
-  {
-    v8::HandleScope handle_scope(isolate);
-    Local<v8::ArrayBuffer> ab = v8::ArrayBuffer::New(isolate, 100);
-    Handle<JSArrayBuffer> buf = v8::Utils::OpenHandle(*ab);
-    VerifyTrackedInNewSpace(*buf);
-    heap::GcAndSweep(heap, NEW_SPACE);
-    VerifyTrackedInNewSpace(*buf);
-    heap::GcAndSweep(heap, NEW_SPACE);
-    VerifyTrackedInOldSpace(*buf);
-    heap::GcAndSweep(heap, NEW_SPACE);
-    VerifyTrackedInOldSpace(*buf);
-    raw_ab = *buf;
-    // Prohibit page from being released.
-    Page::FromAddress(buf->address())->MarkNeverEvacuate();
-  }
-  // 2 GCs are needed because we promote to old space as live, meaning that
-  // we will survive one GC.
-  heap::GcAndSweep(heap, OLD_SPACE);
-  heap::GcAndSweep(heap, OLD_SPACE);
-  VerifyUntracked(raw_ab);
-}
-
-TEST(ArrayBuffer_ScavengeAndMC) {
-  CcTest::InitializeVM();
-  LocalContext env;
-  v8::Isolate* isolate = env->GetIsolate();
-  Heap* heap = reinterpret_cast<Isolate*>(isolate)->heap();
-
-  JSArrayBuffer* raw_ab = nullptr;
-  {
-    v8::HandleScope handle_scope(isolate);
-    Local<v8::ArrayBuffer> ab = v8::ArrayBuffer::New(isolate, 100);
-    Handle<JSArrayBuffer> buf = v8::Utils::OpenHandle(*ab);
-    VerifyTrackedInNewSpace(*buf);
-    heap::GcAndSweep(heap, NEW_SPACE);
-    VerifyTrackedInNewSpace(*buf);
-    heap::GcAndSweep(heap, NEW_SPACE);
-    VerifyTrackedInOldSpace(*buf);
-    heap::GcAndSweep(heap, OLD_SPACE);
-    VerifyTrackedInOldSpace(*buf);
-    heap::GcAndSweep(heap, NEW_SPACE);
-    VerifyTrackedInOldSpace(*buf);
-    raw_ab = *buf;
-    // Prohibit page from being released.
-    Page::FromAddress(buf->address())->MarkNeverEvacuate();
-  }
-  // 2 GCs are needed because we promote to old space as live, meaning that
-  // we will survive one GC.
-  heap::GcAndSweep(heap, OLD_SPACE);
-  heap::GcAndSweep(heap, OLD_SPACE);
-  VerifyUntracked(raw_ab);
-}
-
-TEST(ArrayBuffer_Compaction) {
-  FLAG_manual_evacuation_candidates_selection = true;
-  CcTest::InitializeVM();
-  LocalContext env;
-  v8::Isolate* isolate = env->GetIsolate();
-  Heap* heap = reinterpret_cast<Isolate*>(isolate)->heap();
-  heap::AbandonCurrentlyFreeMemory(heap->old_space());
-
-  v8::HandleScope handle_scope(isolate);
-  Local<v8::ArrayBuffer> ab1 = v8::ArrayBuffer::New(isolate, 100);
-  Handle<JSArrayBuffer> buf1 = v8::Utils::OpenHandle(*ab1);
-  VerifyTrackedInNewSpace(*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);
-  VerifyTrackedInOldSpace(*buf1);
-
-  heap->CollectAllGarbage();
-
-  Page* page_after_gc = Page::FromAddress(buf1->address());
-  VerifyTrackedInOldSpace(*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
-// implicitly through e.g. |Externalize|) we need to sync with the sweeper
-// task.
-//
-// Note: This test will will only fail on TSAN configurations.
-
-// Disable verify-heap since it forces sweeping to be completed in the
-// epilogue of the GC.
-#ifdef VERIFY_HEAP
-  i::FLAG_verify_heap = false;
-#endif  // VERIFY_HEAP
-
-  CcTest::InitializeVM();
-  LocalContext env;
-  v8::Isolate* isolate = env->GetIsolate();
-  Heap* heap = reinterpret_cast<Isolate*>(isolate)->heap();
-  {
-    v8::HandleScope handle_scope(isolate);
-    Local<v8::ArrayBuffer> ab = v8::ArrayBuffer::New(isolate, 100);
-    Handle<JSArrayBuffer> buf = v8::Utils::OpenHandle(*ab);
-
-    {
-      v8::HandleScope handle_scope(isolate);
-      // Allocate another buffer on the same page to force processing a
-      // non-empty set of buffers in the last GC.
-      Local<v8::ArrayBuffer> ab2 = v8::ArrayBuffer::New(isolate, 100);
-      Handle<JSArrayBuffer> buf2 = v8::Utils::OpenHandle(*ab2);
-      VerifyTrackedInNewSpace(*buf);
-      VerifyTrackedInNewSpace(*buf2);
-      heap::GcAndSweep(heap, NEW_SPACE);
-      VerifyTrackedInNewSpace(*buf);
-      VerifyTrackedInNewSpace(*buf2);
-      heap::GcAndSweep(heap, NEW_SPACE);
-      VerifyTrackedInOldSpace(*buf);
-      VerifyTrackedInOldSpace(*buf2);
-    }
-
-    heap->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());
-  }
-}
-
-}  // namespace internal
-}  // namespace v8