Merge to XFA: Pass v8::Isolate to PDFium at init time.

fpdfsdk/src/jsapi/fxjs_v8.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "../../../core/include/fxcrt/fx_basic.h"
 #include "../../include/jsapi/fxjs_v8.h"
 
 const wchar_t kFXJSValueNameString[] = L"string";
 const wchar_t kFXJSValueNameNumber[] = L"number";
 const wchar_t kFXJSValueNameBoolean[] = L"boolean";
 const wchar_t kFXJSValueNameDate[] = L"date";
 const wchar_t kFXJSValueNameObject[] = L"object";
 const wchar_t kFXJSValueNameFxobj[] = L"fxobj";
 const wchar_t kFXJSValueNameNull[] = L"null";
 const wchar_t kFXJSValueNameUndefined[] = L"undefined";
 
-static unsigned int g_embedderDataSlot = 1u;
-
 // Keep this consistent with the values defined in gin/public/context_holder.h
 // (without actually requiring a dependency on gin itself for the standalone
 // embedders of PDFIum). The value we want to use is:
 //   kPerContextDataStartIndex + kEmbedderPDFium, which is 3.
 static const unsigned int kPerContextDataIndex = 3u;
-
+static unsigned int g_embedderDataSlot = 1u;
+static v8::Isolate* g_isolate = nullptr;
+static FXJS_ArrayBufferAllocator* g_arrayBufferAllocator = nullptr;
 static v8::Global<v8::ObjectTemplate>* g_DefaultGlobalObjectTemplate = nullptr;
 
 class CFXJS_PrivateData {
  public:
   CFXJS_PrivateData(int nObjDefID) : ObjDefID(nObjDefID), pPrivate(NULL) {}
 
   int ObjDefID;
   void* pPrivate;
 };
 
@@ skipping 79 matching lines @@
 }
 
 void* FXJS_ArrayBufferAllocator::AllocateUninitialized(size_t length) {
   return malloc(length);
 }
 
 void FXJS_ArrayBufferAllocator::Free(void* data, size_t length) {
   free(data);
 }
 
+void FXJS_Initialize(unsigned int embedderDataSlot, v8::Isolate* pIsolate) {
+  g_embedderDataSlot = embedderDataSlot;
+  g_isolate = pIsolate;
+}
+
+void FXJS_Release() {
+  g_DefaultGlobalObjectTemplate = nullptr;
+  g_isolate = nullptr;
+
+  delete g_arrayBufferAllocator;
+  g_arrayBufferAllocator = nullptr;
+}
+
+bool FXJS_GetIsolate(v8::Isolate** pResultIsolate) {
+  if (g_isolate) {
+    *pResultIsolate = g_isolate;
+    return false;
+  }
+  // Provide backwards compatibility when no external isolate.
+  if (!g_arrayBufferAllocator)
+    g_arrayBufferAllocator = new FXJS_ArrayBufferAllocator();
+  v8::Isolate::CreateParams params;
+  params.array_buffer_allocator = g_arrayBufferAllocator;
+  *pResultIsolate = v8::Isolate::New(params);
+  return true;
+}
+
 // static
 void FXJS_PerIsolateData::SetUp(v8::Isolate* pIsolate) {
   if (!pIsolate->GetData(g_embedderDataSlot))
     pIsolate->SetData(g_embedderDataSlot, new FXJS_PerIsolateData());
 }
 
 // static
 FXJS_PerIsolateData* FXJS_PerIsolateData::Get(v8::Isolate* pIsolate) {
   return static_cast<FXJS_PerIsolateData*>(
       pIsolate->GetData(g_embedderDataSlot));
 }
 
-void FXJS_Initialize(unsigned int embedderDataSlot) {
-  g_embedderDataSlot = embedderDataSlot;
-}
-
-void FXJS_Release() {
-}
-
 int FXJS_DefineObj(v8::Isolate* pIsolate,
                    const wchar_t* sObjName,
                    FXJSOBJTYPE eObjType,
                    FXJS_CONSTRUCTOR pConstructor,
                    FXJS_DESTRUCTOR pDestructor) {
   v8::Isolate::Scope isolate_scope(pIsolate);
   v8::HandleScope handle_scope(pIsolate);
 
   FXJS_PerIsolateData::SetUp(pIsolate);
   CFXJS_ObjDefinition* pObjDef = new CFXJS_ObjDefinition(
@@ skipping 564 matching lines @@
     return v8::Local<v8::Array>();
   v8::Local<v8::Context> context = pIsolate->GetCurrentContext();
   return v8::Local<v8::Array>::Cast(pValue->ToObject(context).ToLocalChecked());
 }
 
 void FXJS_ValueCopy(v8::Local<v8::Value>& pTo, v8::Local<v8::Value> pFrom) {
   pTo = pFrom;
 }