1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef GIN_PER_ISOLATE_DATA_H_ 6 #define GIN_PER_ISOLATE_DATA_H_ 7 8 #include <map> 9 10 #include "base/basictypes.h" 11 #include "gin/gin_export.h" 12 #include "gin/public/wrapper_info.h" 13 #include "v8/include/v8.h" 14 15 namespace gin { 16 17 // There is one instance of PerIsolateData per v8::Isolate managed by Gin. This 18 // class stores all the Gin-related data that varies per isolate. 19 class GIN_EXPORT PerIsolateData { 20 public: 21 explicit PerIsolateData(v8::Isolate* isolate); 22 ~PerIsolateData(); 23 24 static PerIsolateData* From(v8::Isolate* isolate); 25 26 // Each isolate is associated with a collection of v8::ObjectTemplates and 27 // v8::FunctionTemplates. Typically these template objects are created 28 // lazily. 29 void SetObjectTemplate(WrapperInfo* info, 30 v8::Local<v8::ObjectTemplate> object_template); 31 void SetFunctionTemplate(WrapperInfo* info, 32 v8::Local<v8::FunctionTemplate> function_template); 33 34 // These are low-level functions for retrieving object or function templates 35 // stored in this object. Because these templates are often created lazily, 36 // most clients should call higher-level functions that know how to populate 37 // these templates if they haven't already been created. 38 v8::Local<v8::ObjectTemplate> GetObjectTemplate(WrapperInfo* info); 39 v8::Local<v8::FunctionTemplate> GetFunctionTemplate(WrapperInfo* info); 40 41 v8::Isolate* isolate() { return isolate_; } 42 43 private: 44 typedef std::map< 45 WrapperInfo*, v8::Eternal<v8::ObjectTemplate> > ObjectTemplateMap; 46 typedef std::map< 47 WrapperInfo*, v8::Eternal<v8::FunctionTemplate> > FunctionTemplateMap; 48 49 // PerIsolateData doesn't actually own |isolate_|. Instead, the isolate is 50 // owned by the IsolateHolder, which also owns the PerIsolateData. 51 v8::Isolate* isolate_; 52 ObjectTemplateMap object_templates_; 53 FunctionTemplateMap function_templates_; 54 55 DISALLOW_COPY_AND_ASSIGN(PerIsolateData); 56 }; 57 58 } // namespace gin 59 60 #endif // GIN_PER_ISOLATE_DATA_H_ 61
