From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shelley Vohr <shelley.vohr@gmail.com>
Date: Thu, 20 Sep 2018 17:44:26 -0700
Subject: add_realloc.patch

Blink overrides ArrayBuffer's allocator with its own one, while Node simply
uses malloc and free, so we need to use v8's allocator in Node. As part of the
10.6.0 upgrade, we needed to make SerializerDelegate accept an allocator
argument in its constructor, and override ReallocateBufferMemory and
FreeBufferMemory to use the allocator. We cannot simply allocate and then memcpy
when we override ReallocateBufferMemory, so we therefore need to implement
Realloc on the v8 side and correspondingly in gin.

diff --git a/gin/array_buffer.cc b/gin/array_buffer.cc
index a02797e94f61e8c71428633a4585a625dc5aadbd..305b7d307d233af699e3f495f85de0f8097ff311 100644
--- a/gin/array_buffer.cc
+++ b/gin/array_buffer.cc
@@ -43,6 +43,10 @@ void* ArrayBufferAllocator::AllocateUninitialized(size_t length) {
   return malloc(length);
 }
 
+void* ArrayBufferAllocator::Realloc(void* data, size_t length) {
+  return realloc(data, length);
+}
+
 void ArrayBufferAllocator::Free(void* data, size_t length) {
   free(data);
 }
diff --git a/gin/array_buffer.h b/gin/array_buffer.h
index 2aef366ac8194aa261cbca6abc051f7da8a988d3..3c7d66c81032636abcca4f1538ce9b7f4ddb2de2 100644
--- a/gin/array_buffer.h
+++ b/gin/array_buffer.h
@@ -21,6 +21,7 @@ class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
  public:
   void* Allocate(size_t length) override;
   void* AllocateUninitialized(size_t length) override;
+  void* Realloc(void* data, size_t length) override;
   void Free(void* data, size_t length) override;
 
   GIN_EXPORT static ArrayBufferAllocator* SharedInstance();
diff --git a/third_party/blink/renderer/bindings/core/v8/v8_initializer.cc b/third_party/blink/renderer/bindings/core/v8/v8_initializer.cc
index bec05f5222c6653f6f42c87a2f71e4aa0f244b5e..96533b347ca9e1e140fb019a2b95093d5e1aee73 100644
--- a/third_party/blink/renderer/bindings/core/v8/v8_initializer.cc
+++ b/third_party/blink/renderer/bindings/core/v8/v8_initializer.cc
@@ -649,6 +649,10 @@ class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
         size, WTF::ArrayBufferContents::kDontInitialize);
   }
 
+  void* Realloc(void* data, size_t size) override {
+    return WTF::ArrayBufferContents::Realloc(data, size);
+  }
+
   void Free(void* data, size_t size) override {
     WTF::ArrayBufferContents::FreeMemory(data);
   }
diff --git a/third_party/blink/renderer/platform/wtf/typed_arrays/array_buffer_contents.cc b/third_party/blink/renderer/platform/wtf/typed_arrays/array_buffer_contents.cc
index 5a8dbf109f4f7eb682c23bf24c391b70a7717a0c..e0b33e815f2eb98aa494a8489543acdb873e1597 100644
--- a/third_party/blink/renderer/platform/wtf/typed_arrays/array_buffer_contents.cc
+++ b/third_party/blink/renderer/platform/wtf/typed_arrays/array_buffer_contents.cc
@@ -122,6 +122,11 @@ void* ArrayBufferContents::AllocateMemoryOrNull(size_t size,
   return AllocateMemoryWithFlags(size, policy, base::PartitionAllocReturnNull);
 }
 
+void* ArrayBufferContents::Realloc(void* data, size_t size) {
+  return Partitions::ArrayBufferPartition()->Realloc(data, size,
+      WTF_HEAP_PROFILER_TYPE_NAME(ArrayBufferContents));
+}
+
 void ArrayBufferContents::FreeMemory(void* data) {
   Partitions::ArrayBufferPartition()->Free(data);
 }
diff --git a/third_party/blink/renderer/platform/wtf/typed_arrays/array_buffer_contents.h b/third_party/blink/renderer/platform/wtf/typed_arrays/array_buffer_contents.h
index 3cc1abe8e48c8e45d1f3ebb98a6a6ea1a4e3fbd9..1e2438cc6da97a89fefc86148bb1037d3c84f765 100644
--- a/third_party/blink/renderer/platform/wtf/typed_arrays/array_buffer_contents.h
+++ b/third_party/blink/renderer/platform/wtf/typed_arrays/array_buffer_contents.h
@@ -134,6 +134,7 @@ class WTF_EXPORT ArrayBufferContents {
   void CopyTo(ArrayBufferContents& other);
 
   static void* AllocateMemoryOrNull(size_t, InitializationPolicy);
+  static void* Realloc(void* data, size_t);
   static void FreeMemory(void*);
   static DataHandle CreateDataHandle(size_t, InitializationPolicy);
   static void Initialize(
