mirror of https://gitee.com/bigwinds/arangodb
102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2016 ArangoDB GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGODB_APPLICATION_FEATURES_V8PLATFORM_FEATURE_H
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#define ARANGODB_APPLICATION_FEATURES_V8PLATFORM_FEATURE_H 1
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#include <stddef.h>
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#include <cstdint>
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#include <memory>
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#include <string>
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#include <unordered_map>
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#include <vector>
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#include <v8-platform.h>
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#include <v8.h>
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#include "Basics/operating-system.h"
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#include "ApplicationFeatures/ApplicationFeature.h"
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#include "Basics/Mutex.h"
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namespace arangodb {
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namespace application_features {
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class ApplicationServer;
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}
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namespace options {
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class ProgramOptions;
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}
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class V8PlatformFeature final : public application_features::ApplicationFeature {
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private:
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struct IsolateData {
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bool _outOfMemory = false;
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size_t _heapSizeAtStart = 0;
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};
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public:
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static IsolateData* getIsolateData(v8::Isolate* isolate) {
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return reinterpret_cast<IsolateData*>(isolate->GetData(V8_INFO));
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}
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static bool isOutOfMemory(v8::Isolate* isolate) {
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return getIsolateData(isolate)->_outOfMemory;
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}
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static void setOutOfMemory(v8::Isolate* isolate) {
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getIsolateData(isolate)->_outOfMemory = true;
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}
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static void resetOutOfMemory(v8::Isolate* isolate) {
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getIsolateData(isolate)->_outOfMemory = false;
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}
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static const uint32_t V8_INFO = 0;
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static const uint32_t V8_DATA_SLOT = 1;
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explicit V8PlatformFeature(application_features::ApplicationServer& server);
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void collectOptions(std::shared_ptr<options::ProgramOptions>) override final;
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void validateOptions(std::shared_ptr<options::ProgramOptions>) override final;
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void start() override final;
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void unprepare() override final;
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private:
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std::vector<std::string> _v8Options;
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uint64_t _v8MaxHeap = TRI_V8_MAXHEAP;
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public:
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v8::Isolate* createIsolate();
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void disposeIsolate(v8::Isolate*);
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private:
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std::unique_ptr<v8::Platform> _platform;
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std::unique_ptr<v8::ArrayBuffer::Allocator> _allocator;
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std::string _v8CombinedOptions;
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arangodb::Mutex _lock; // to protect vector _isolateData
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std::unordered_map<v8::Isolate*, std::unique_ptr<IsolateData>> _isolateData;
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};
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} // namespace arangodb
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#endif
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