1 files changed, 115 insertions, 0 deletions
diff --git a/fxjse/runtime.cpp b/fxjse/runtime.cpp
new file mode 100644
index 0000000000..bf171eef7e
--- /dev/null
+++ b/fxjse/runtime.cpp
@@ -0,0 +1,115 @@
+// 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 "fxjse/runtime.h"
+
+#include <algorithm>
+
+#include "fpdfsdk/jsapi/include/fxjs_v8.h"
+#include "fxjse/scope_inline.h"
+
+// Duplicates fpdfsdk's cjs_runtime.h, but keeps XFA from depending on it.
+// TODO(tsepez): make a single version of this.
+class FXJSE_ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
+  void* Allocate(size_t length) override { return calloc(1, length); }
+  void* AllocateUninitialized(size_t length) override { return malloc(length); }
+  void Free(void* data, size_t length) override { free(data); }
+};
+
+static void FXJSE_KillV8() {
+  v8::V8::Dispose();
+}
+
+void FXJSE_Initialize() {
+  if (!CFXJSE_IsolateTracker::g_pInstance)
+    CFXJSE_IsolateTracker::g_pInstance = new CFXJSE_IsolateTracker;
+
+  static FX_BOOL bV8Initialized = FALSE;
+  if (bV8Initialized)
+    return;
+
+  bV8Initialized = TRUE;
+  atexit(FXJSE_KillV8);
+}
+
+static void FXJSE_Runtime_DisposeCallback(v8::Isolate* pIsolate, bool bOwned) {
+  if (FXJS_PerIsolateData* pData = FXJS_PerIsolateData::Get(pIsolate)) {
+    delete pData->m_pFXJSERuntimeData;
+    pData->m_pFXJSERuntimeData = nullptr;
+  }
+  if (bOwned)
+    pIsolate->Dispose();
+}
+
+void FXJSE_Finalize() {
+  if (!CFXJSE_IsolateTracker::g_pInstance)
+    return;
+
+  CFXJSE_IsolateTracker::g_pInstance->RemoveAll(FXJSE_Runtime_DisposeCallback);
+  delete CFXJSE_IsolateTracker::g_pInstance;
+  CFXJSE_IsolateTracker::g_pInstance = nullptr;
+}
+
+v8::Isolate* FXJSE_Runtime_Create_Own() {
+  v8::Isolate::CreateParams params;
+  params.array_buffer_allocator = new FXJSE_ArrayBufferAllocator();
+  v8::Isolate* pIsolate = v8::Isolate::New(params);
+  ASSERT(pIsolate && CFXJSE_IsolateTracker::g_pInstance);
+  CFXJSE_IsolateTracker::g_pInstance->Append(pIsolate);
+  return pIsolate;
+}
+
+void FXJSE_Runtime_Release(v8::Isolate* pIsolate) {
+  if (!pIsolate)
+    return;
+  CFXJSE_IsolateTracker::g_pInstance->Remove(pIsolate,
+                                             FXJSE_Runtime_DisposeCallback);
+}
+
+CFXJSE_RuntimeData* CFXJSE_RuntimeData::Create(v8::Isolate* pIsolate) {
+  CFXJSE_RuntimeData* pRuntimeData = new CFXJSE_RuntimeData(pIsolate);
+  CFXJSE_ScopeUtil_IsolateHandle scope(pIsolate);
+  v8::Local<v8::FunctionTemplate> hFuncTemplate =
+      v8::FunctionTemplate::New(pIsolate);
+  v8::Local<v8::Context> hContext =
+      v8::Context::New(pIsolate, 0, hFuncTemplate->InstanceTemplate());
+  hContext->SetSecurityToken(v8::External::New(pIsolate, pIsolate));
+  pRuntimeData->m_hRootContextGlobalTemplate.Reset(pIsolate, hFuncTemplate);
+  pRuntimeData->m_hRootContext.Reset(pIsolate, hContext);
+  return pRuntimeData;
+}
+
+CFXJSE_RuntimeData* CFXJSE_RuntimeData::Get(v8::Isolate* pIsolate) {
+  FXJS_PerIsolateData::SetUp(pIsolate);
+  FXJS_PerIsolateData* pData = FXJS_PerIsolateData::Get(pIsolate);
+  if (!pData->m_pFXJSERuntimeData)
+    pData->m_pFXJSERuntimeData = CFXJSE_RuntimeData::Create(pIsolate);
+  return pData->m_pFXJSERuntimeData;
+}
+
+CFXJSE_IsolateTracker* CFXJSE_IsolateTracker::g_pInstance = nullptr;
+
+void CFXJSE_IsolateTracker::Append(v8::Isolate* pIsolate) {
+  m_OwnedIsolates.push_back(pIsolate);
+}
+
+void CFXJSE_IsolateTracker::Remove(
+    v8::Isolate* pIsolate,
+    CFXJSE_IsolateTracker::DisposeCallback lpfnDisposeCallback) {
+  auto it = std::find(m_OwnedIsolates.begin(), m_OwnedIsolates.end(), pIsolate);
+  bool bFound = it != m_OwnedIsolates.end();
+  if (bFound)
+    m_OwnedIsolates.erase(it);
+  lpfnDisposeCallback(pIsolate, bFound);
+}
+
+void CFXJSE_IsolateTracker::RemoveAll(
+    CFXJSE_IsolateTracker::DisposeCallback lpfnDisposeCallback) {
+  for (v8::Isolate* pIsolate : m_OwnedIsolates)
+    lpfnDisposeCallback(pIsolate, true);
+
+  m_OwnedIsolates.clear();
+}