Allocate GCInfo descriptor table during Oilpan initialization.

Source/platform/heap/Heap.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1964 matching lines @@
     s_postMarkingCallbackStack = new CallbackStack();
     s_weakCallbackStack = new CallbackStack();
     s_ephemeronStack = new CallbackStack();
     s_heapDoesNotContainCache = new HeapDoesNotContainCache();
     s_markingVisitor = new MarkingVisitor<GlobalMarking>();
     s_freePagePool = new FreePagePool();
     s_orphanedPagePool = new OrphanedPagePool();
     s_allocatedObjectSize = 0;
     s_allocatedSpace = 0;
     s_markedObjectSize = 0;
+
+    const size_t tableSize = gcInfoIndexMax * sizeof(GCInfo);
+    s_gcInfoTable = reinterpret_cast<GCInfo const**>(new uint8_t[tableSize]);
+    memset(s_gcInfoTable, 0, tableSize);
 }
 
 void Heap::shutdown()
 {
     s_shutdownCalled = true;
     ThreadState::shutdownHeapIfNecessary();
 }
 
 void Heap::doShutdown()
 {
@@ skipping 13 matching lines @@
     delete s_weakCallbackStack;
     s_weakCallbackStack = nullptr;
     delete s_postMarkingCallbackStack;
     s_postMarkingCallbackStack = nullptr;
     delete s_markingStack;
     s_markingStack = nullptr;
     delete s_ephemeronStack;
     s_ephemeronStack = nullptr;
     delete s_regionTree;
     s_regionTree = nullptr;
+    delete[] s_gcInfoTable;
+    s_gcInfoTable = nullptr;
     ThreadState::shutdown();
     ASSERT(Heap::allocatedSpace() == 0);
 }
 
 #if ENABLE(ASSERT)
 BaseHeapPage* Heap::findPageFromAddress(Address address)
 {
     ASSERT(ThreadState::current()->isInGC());
     for (ThreadState* state : ThreadState::attachedThreads()) {
         if (BaseHeapPage* page = state->findPageFromAddress(address))
@@ skipping 592 matching lines @@
 bool Heap::s_shutdownCalled = false;
 bool Heap::s_lastGCWasConservative = false;
 FreePagePool* Heap::s_freePagePool;
 OrphanedPagePool* Heap::s_orphanedPagePool;
 Heap::RegionTree* Heap::s_regionTree = nullptr;
 size_t Heap::s_allocatedObjectSize = 0;
 size_t Heap::s_allocatedSpace = 0;
 size_t Heap::s_markedObjectSize = 0;
 
 } // namespace blink