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// 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(v8::Isolate* pIsolate)
: m_pIsolate(pIsolate) {}
CFXJSE_RuntimeData::~CFXJSE_RuntimeData() {}
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::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;
}
CFXJSE_IsolateTracker* CFXJSE_IsolateTracker::g_pInstance = nullptr;
CFXJSE_IsolateTracker::CFXJSE_IsolateTracker() {}
CFXJSE_IsolateTracker::~CFXJSE_IsolateTracker() {}
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();
}
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