1 2 /** 3 * Copyright (C) 2018-present MongoDB, Inc. 4 * 5 * This program is free software: you can redistribute it and/or modify 6 * it under the terms of the Server Side Public License, version 1, 7 * as published by MongoDB, Inc. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * Server Side Public License for more details. 13 * 14 * You should have received a copy of the Server Side Public License 15 * along with this program. If not, see 16 * <http://www.mongodb.com/licensing/server-side-public-license>. 17 * 18 * As a special exception, the copyright holders give permission to link the 19 * code of portions of this program with the OpenSSL library under certain 20 * conditions as described in each individual source file and distribute 21 * linked combinations including the program with the OpenSSL library. You 22 * must comply with the Server Side Public License in all respects for 23 * all of the code used other than as permitted herein. If you modify file(s) 24 * with this exception, you may extend this exception to your version of the 25 * file(s), but you are not obligated to do so. If you do not wish to do so, 26 * delete this exception statement from your version. If you delete this 27 * exception statement from all source files in the program, then also delete 28 * it in the license file. 29 */ 30 31 #pragma once 32 33 #include <jsapi.h> 34 35 #include "mongo/scripting/deadline_monitor.h" 36 #include "mongo/scripting/engine.h" 37 #include "mongo/stdx/mutex.h" 38 #include "mongo/stdx/unordered_map.h" 39 #include "mongo/util/concurrency/mutex.h" 40 41 namespace mongo { 42 namespace mozjs { 43 44 class MozJSImplScope; 45 46 /** 47 * Implements the global ScriptEngine interface for MozJS. The associated TU 48 * pulls this in for the polymorphic globalScriptEngine. 49 */ 50 class MozJSScriptEngine final : public mongo::ScriptEngine { 51 public: 52 MozJSScriptEngine(); 53 ~MozJSScriptEngine() override; 54 55 mongo::Scope* createScope() override; 56 mongo::Scope* createScopeForCurrentThread() override; 57 runTest()58 void runTest() override {} 59 utf8Ok()60 bool utf8Ok() const override { 61 return true; 62 } 63 64 void interrupt(unsigned opId) override; 65 66 void interruptAll() override; 67 68 void enableJIT(bool value) override; 69 bool isJITEnabled() const override; 70 71 void enableJavaScriptProtection(bool value) override; 72 bool isJavaScriptProtectionEnabled() const override; 73 74 int getJSHeapLimitMB() const override; 75 void setJSHeapLimitMB(int limit) override; 76 77 void registerOperation(OperationContext* ctx, MozJSImplScope* scope); 78 void unregisterOperation(unsigned int opId); 79 80 using ScopeCallback = void (*)(Scope&); getScopeInitCallback()81 ScopeCallback getScopeInitCallback() { 82 return _scopeInitCallback; 83 }; 84 getDeadlineMonitor()85 DeadlineMonitor<MozJSImplScope>& getDeadlineMonitor() { 86 return _deadlineMonitor; 87 } 88 89 private: 90 std::string printKnownOps_inlock(); 91 92 /** 93 * This mutex protects _opToScopeMap 94 */ 95 stdx::mutex _globalInterruptLock; 96 97 using OpIdToScopeMap = stdx::unordered_map<unsigned, MozJSImplScope*>; 98 OpIdToScopeMap _opToScopeMap; // map of mongo op ids to scopes (protected by 99 // _globalInterruptLock). 100 101 DeadlineMonitor<MozJSImplScope> _deadlineMonitor; 102 }; 103 104 } // namespace mozjs 105 } // namespace mongo 106