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1 /* | 1 /* |
2 * Copyright (C) 2009 Google Inc. All rights reserved. | 2 * Copyright (C) 2009 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
(...skipping 16 matching lines...) Expand all Loading... | |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 */ | 29 */ |
30 | 30 |
31 #ifndef WorkerLoaderProxy_h | 31 #ifndef WorkerLoaderProxy_h |
32 #define WorkerLoaderProxy_h | 32 #define WorkerLoaderProxy_h |
33 | 33 |
34 #include "core/dom/ExecutionContext.h" | 34 #include "core/dom/ExecutionContext.h" |
35 #include "wtf/Forward.h" | 35 #include "wtf/Forward.h" |
36 #include "wtf/PassOwnPtr.h" | 36 #include "wtf/PassOwnPtr.h" |
37 #include "wtf/ThreadSafeRefCounted.h" | |
37 | 38 |
38 namespace blink { | 39 namespace blink { |
39 | 40 |
40 // A proxy to talk to the loader context. Normally, the document on the main thr ead | 41 // The WorkerLoaderProxy is a proxy to the loader context. Normally, the |
41 // provides loading services for the subordinate workers. This interface provide s 2-way | 42 // document on the main thread provides loading services for the subordinate |
42 // communications to the Document context and back to the worker. | 43 // workers. WorkerLoaderProxy provides 2-way communications to the Document |
44 // context and back to the worker. | |
45 // | |
43 // Note that in multi-process browsers, the Worker object context and the Docume nt | 46 // Note that in multi-process browsers, the Worker object context and the Docume nt |
44 // context can be distinct. | 47 // context can be distinct. |
45 class WorkerLoaderProxy { | 48 |
49 // The abstract interface providing the methods for actually posting tasks; sepa rated | |
50 // from the thread-safe & ref-counted WorkerLoaderProxy object which weakly refe rs | |
51 // to the provider so as to allow the proxy object to outlive the provider durin g | |
52 // shutdown. | |
53 // | |
54 class WorkerLoaderProxyProvider { | |
46 public: | 55 public: |
47 virtual ~WorkerLoaderProxy() { } | 56 virtual ~WorkerLoaderProxyProvider() { } |
48 | 57 |
49 // Posts a task to the thread which runs the loading code (normally, the mai n thread). | 58 // Posts a task to the thread which runs the loading code (normally, the mai n thread). |
50 virtual void postTaskToLoader(PassOwnPtr<ExecutionContextTask>) = 0; | 59 virtual void postTaskToLoader(PassOwnPtr<ExecutionContextTask>) = 0; |
51 | 60 |
52 // Posts callbacks from loading code to the WorkerGlobalScope. | 61 // Posts callbacks from loading code to the WorkerGlobalScope. |
53 // Returns true if the task was posted successfully. | 62 // Returns true if the task was posted successfully. |
54 virtual bool postTaskToWorkerGlobalScope(PassOwnPtr<ExecutionContextTask>) = 0; | 63 virtual bool postTaskToWorkerGlobalScope(PassOwnPtr<ExecutionContextTask>) = 0; |
55 }; | 64 }; |
56 | 65 |
66 class WorkerLoaderProxy : public ThreadSafeRefCounted<WorkerLoaderProxy>, public WorkerLoaderProxyProvider { | |
67 public: | |
68 static PassRefPtr<WorkerLoaderProxy> create(WorkerLoaderProxyProvider* loade rProxyProvider) | |
69 { | |
70 return adoptRef(new WorkerLoaderProxy(loaderProxyProvider)); | |
71 } | |
72 | |
73 ~WorkerLoaderProxy() override; | |
74 | |
75 void postTaskToLoader(PassOwnPtr<ExecutionContextTask>) override; | |
76 bool postTaskToWorkerGlobalScope(PassOwnPtr<ExecutionContextTask>) override; | |
77 | |
78 // Notification from the provider that it must | |
79 // no longer be accessed. | |
kinuko
2015/02/05 01:41:16
Can we make this comment more explicit (and maybe
sof
2015/02/05 08:05:27
Yes, the comments here were a bit outdated overall
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80 void detachProvider(WorkerLoaderProxyProvider*); | |
81 | |
82 private: | |
83 explicit WorkerLoaderProxy(WorkerLoaderProxyProvider*); | |
84 | |
85 Mutex m_lock; | |
86 WorkerLoaderProxyProvider* m_loaderProxyProvider; | |
87 }; | |
88 | |
57 } // namespace blink | 89 } // namespace blink |
58 | 90 |
59 #endif // WorkerLoaderProxy_h | 91 #endif // WorkerLoaderProxy_h |
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