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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef GIN_PUBLIC_CONTEXT_HOLDER_H_ | 5 #ifndef GIN_PUBLIC_CONTEXT_HOLDER_H_ |
6 #define GIN_PUBLIC_CONTEXT_HOLDER_H_ | 6 #define GIN_PUBLIC_CONTEXT_HOLDER_H_ |
7 | 7 |
8 #include <list> | 8 #include <list> |
9 | 9 |
10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
11 #include "base/memory/scoped_ptr.h" | 11 #include "base/memory/scoped_ptr.h" |
12 #include "gin/gin_export.h" | 12 #include "gin/gin_export.h" |
13 #include "v8/include/v8.h" | 13 #include "v8/include/v8.h" |
14 | 14 |
15 namespace gin { | 15 namespace gin { |
16 | 16 |
17 // Gin embedder that store embedder data in v8::Contexts must do so in a | 17 // Gin embedder that store embedder data in v8::Contexts must do so in a |
18 // single field with the index kPerContextDataStartIndex + GinEmbedder-enum. | 18 // single field with the index kPerContextDataStartIndex + GinEmbedder-enum. |
19 // The field at kDebugIdIndex is treated specially by V8 and is reserved for | 19 // The field at kDebugIdIndex is treated specially by V8 and is reserved for |
20 // a V8 debugger implementation (not used by gin). | 20 // a V8 debugger implementation (not used by gin). |
21 enum ContextEmbedderDataFields { | 21 enum ContextEmbedderDataFields { |
22 kDebugIdIndex = 0, | 22 kDebugIdIndex = 0, |
23 kPerContextDataStartIndex, | 23 kPerContextDataStartIndex, |
24 }; | 24 }; |
25 | 25 |
26 class PerContextData; | 26 class PerContextData; |
27 | 27 |
28 // ContextHolder is a generic class for holding a v8::Context. Rather than | 28 // ContextHolder is a generic class for holding a v8::Context. |
29 // using ContextHolder directly, most code should use a subclass of | |
30 // ContextHolder, such as Runner. | |
31 class GIN_EXPORT ContextHolder { | 29 class GIN_EXPORT ContextHolder { |
32 public: | 30 public: |
33 explicit ContextHolder(v8::Isolate* isolate); | 31 explicit ContextHolder(v8::Isolate* isolate); |
34 ~ContextHolder(); | 32 ~ContextHolder(); |
35 | 33 |
36 v8::Isolate* isolate() const { return isolate_; } | 34 v8::Isolate* isolate() const { return isolate_; } |
37 | 35 |
38 v8::Handle<v8::Context> context() const { | 36 v8::Handle<v8::Context> context() const { |
39 return v8::Local<v8::Context>::New(isolate_, context_); | 37 return v8::Local<v8::Context>::New(isolate_, context_); |
40 } | 38 } |
41 | 39 |
42 void SetContext(v8::Handle<v8::Context> context); | 40 void SetContext(v8::Handle<v8::Context> context); |
43 | 41 |
44 private: | 42 private: |
45 v8::Isolate* isolate_; | 43 v8::Isolate* isolate_; |
46 v8::UniquePersistent<v8::Context> context_; | 44 v8::UniquePersistent<v8::Context> context_; |
47 scoped_ptr<PerContextData> data_; | 45 scoped_ptr<PerContextData> data_; |
48 | 46 |
49 DISALLOW_COPY_AND_ASSIGN(ContextHolder); | 47 DISALLOW_COPY_AND_ASSIGN(ContextHolder); |
50 }; | 48 }; |
51 | 49 |
52 } // namespace gin | 50 } // namespace gin |
53 | 51 |
54 #endif // GIN_PUBLIC_CONTEXT_HOLDER_H_ | 52 #endif // GIN_PUBLIC_CONTEXT_HOLDER_H_ |
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