// Copyright 2016 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 "fxjs/cfxjse_runtimedata.h" #include <utility> #include "fxjs/cfxjse_isolatetracker.h" #include "fxjs/fxjs_v8.h" namespace { // 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); } }; void Runtime_DisposeCallback(v8::Isolate* pIsolate, bool bOwned) { if (FXJS_PerIsolateData* pData = FXJS_PerIsolateData::Get(pIsolate)) delete pData; if (bOwned) pIsolate->Dispose(); } void KillV8() { v8::V8::Dispose(); } } // namespace void FXJSE_Initialize() { if (!CFXJSE_IsolateTracker::g_pInstance) CFXJSE_IsolateTracker::g_pInstance = new CFXJSE_IsolateTracker; static bool bV8Initialized = false; if (bV8Initialized) return; bV8Initialized = true; atexit(KillV8); } void FXJSE_Finalize() { if (!CFXJSE_IsolateTracker::g_pInstance) return; CFXJSE_IsolateTracker::g_pInstance->RemoveAll(Runtime_DisposeCallback); delete CFXJSE_IsolateTracker::g_pInstance; CFXJSE_IsolateTracker::g_pInstance = nullptr; } v8::Isolate* FXJSE_Runtime_Create_Own() { std::unique_ptr<v8::ArrayBuffer::Allocator> allocator( new FXJSE_ArrayBufferAllocator()); v8::Isolate::CreateParams params; params.array_buffer_allocator = allocator.get(); v8::Isolate* pIsolate = v8::Isolate::New(params); ASSERT(pIsolate && CFXJSE_IsolateTracker::g_pInstance); CFXJSE_IsolateTracker::g_pInstance->Append(pIsolate, std::move(allocator)); return pIsolate; } void FXJSE_Runtime_Release(v8::Isolate* pIsolate) { if (!pIsolate) return; CFXJSE_IsolateTracker::g_pInstance->Remove(pIsolate, Runtime_DisposeCallback); } CFXJSE_RuntimeData::CFXJSE_RuntimeData(v8::Isolate* pIsolate) : m_pIsolate(pIsolate) {} CFXJSE_RuntimeData::~CFXJSE_RuntimeData() {} std::unique_ptr<CFXJSE_RuntimeData> CFXJSE_RuntimeData::Create( v8::Isolate* pIsolate) { std::unique_ptr<CFXJSE_RuntimeData> pRuntimeData( new CFXJSE_RuntimeData(pIsolate)); CFXJSE_ScopeUtil_IsolateHandle scope(pIsolate); v8::Local<v8::FunctionTemplate> hFuncTemplate = v8::FunctionTemplate::New(pIsolate); v8::Local<v8::ObjectTemplate> hGlobalTemplate = hFuncTemplate->InstanceTemplate(); hGlobalTemplate->Set( v8::Symbol::GetToStringTag(pIsolate), v8::String::NewFromUtf8(pIsolate, "global", v8::NewStringType::kNormal) .ToLocalChecked()); v8::Local<v8::Context> hContext = v8::Context::New(pIsolate, 0, hGlobalTemplate); 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.get(); } CFXJSE_IsolateTracker* CFXJSE_IsolateTracker::g_pInstance = nullptr;