| // Copyright 2016 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| #ifndef COBALT_SCRIPT_MOZJS_45_MOZJS_ENGINE_H_ |
| #define COBALT_SCRIPT_MOZJS_45_MOZJS_ENGINE_H_ |
| |
| #include <vector> |
| |
| #include "base/threading/thread_checker.h" |
| #include "base/timer.h" |
| #include "cobalt/script/javascript_engine.h" |
| #include "third_party/mozjs-45/js/src/jsapi.h" |
| |
| namespace cobalt { |
| namespace script { |
| namespace mozjs { |
| |
| class MozjsEngine : public JavaScriptEngine { |
| public: |
| explicit MozjsEngine(const Options& options); |
| ~MozjsEngine() OVERRIDE; |
| |
| scoped_refptr<GlobalEnvironment> CreateGlobalEnvironment() OVERRIDE; |
| void CollectGarbage() OVERRIDE; |
| void ReportExtraMemoryCost(size_t bytes) OVERRIDE; |
| bool RegisterErrorHandler(JavaScriptEngine::ErrorHandler handler) OVERRIDE; |
| void SetGcThreshold(int64_t bytes) OVERRIDE; |
| |
| private: |
| void TimerGarbageCollect(); |
| static bool ContextCallback(JSContext* context, unsigned context_op, |
| void* data); |
| static void GCCallback(JSRuntime* runtime, JSGCStatus status, void* data); |
| static void FinalizeCallback(JSFreeOp* free_op, JSFinalizeStatus status, |
| bool is_compartment, void* data); |
| bool ReportJSError(JSContext* context, const char* message, |
| JSErrorReport* report); |
| |
| base::ThreadChecker thread_checker_; |
| |
| // Top-level object that represents the Javascript engine. Typically there is |
| // one per process, but it's allowed to have multiple. |
| JSRuntime* runtime_; |
| |
| // The sole context created for this JSRuntime. |
| JSContext* context_; |
| |
| // The amount of externally allocated memory since last forced GC. |
| size_t accumulated_extra_memory_cost_; |
| |
| // Used to trigger a garbage collection periodically. |
| base::RepeatingTimer<MozjsEngine> gc_timer_; |
| |
| // Used to handle javascript errors. |
| ErrorHandler error_handler_; |
| |
| JavaScriptEngine::Options options_; |
| }; |
| } // namespace mozjs |
| } // namespace script |
| } // namespace cobalt |
| |
| #endif // COBALT_SCRIPT_MOZJS_45_MOZJS_ENGINE_H_ |