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1 // Copyright 2017 The Chromium Authors. All rights reserved. | 1 // Copyright 2017 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 MainThreadWorklet_h | 5 #ifndef MainThreadWorklet_h |
6 #define MainThreadWorklet_h | 6 #define MainThreadWorklet_h |
7 | 7 |
8 #include "core/workers/Worklet.h" | 8 #include "core/workers/Worklet.h" |
9 | 9 |
10 #include "bindings/core/v8/ScriptPromise.h" | 10 #include "bindings/core/v8/ScriptPromise.h" |
11 #include "core/CoreExport.h" | 11 #include "core/CoreExport.h" |
12 #include "platform/heap/Handle.h" | 12 #include "platform/heap/Handle.h" |
13 | 13 |
14 namespace blink { | 14 namespace blink { |
15 | 15 |
16 class LocalFrame; | 16 class LocalFrame; |
17 class ScriptPromiseResolver; | 17 class ScriptPromiseResolver; |
18 class WorkletGlobalScopeProxy; | |
18 | 19 |
19 // A MainThreadWorklet is a worklet that runs only on the main thread. | 20 // A MainThreadWorklet is a worklet that runs only on the main thread. |
20 // TODO(nhiroki): This is a temporary class to support module loading for main | 21 // TODO(nhiroki): This is a temporary class to support module loading for main |
21 // thread worklets. This and ThreadedWorklet will be merged into the base | 22 // thread worklets. This and ThreadedWorklet will be merged into the base |
22 // Worklet class once threaded worklets are ready to use module loading. | 23 // Worklet class once threaded worklets are ready to use module loading. |
23 class CORE_EXPORT MainThreadWorklet : public Worklet { | 24 class CORE_EXPORT MainThreadWorklet : public Worklet { |
24 USING_GARBAGE_COLLECTED_MIXIN(MainThreadWorklet); | 25 USING_GARBAGE_COLLECTED_MIXIN(MainThreadWorklet); |
25 WTF_MAKE_NONCOPYABLE(MainThreadWorklet); | 26 WTF_MAKE_NONCOPYABLE(MainThreadWorklet); |
26 | 27 |
27 public: | 28 public: |
28 virtual ~MainThreadWorklet() = default; | 29 virtual ~MainThreadWorklet() = default; |
29 | 30 |
30 // Worklet | 31 // Worklet |
31 ScriptPromise addModule(ScriptState*, const String& module_url) final; | 32 ScriptPromise addModule(ScriptState*, const String& module_url) final; |
32 | 33 |
33 // ContextLifecycleObserver | 34 // ContextLifecycleObserver |
34 void ContextDestroyed(ExecutionContext*) final; | 35 void ContextDestroyed(ExecutionContext*) final; |
35 | 36 |
36 DECLARE_VIRTUAL_TRACE(); | 37 DECLARE_VIRTUAL_TRACE(); |
37 | 38 |
38 protected: | 39 protected: |
39 explicit MainThreadWorklet(LocalFrame*); | 40 explicit MainThreadWorklet(LocalFrame*); |
40 | 41 |
42 // Creates WorkletGlobalScope and adds it into |global_scope_proxies_| if | |
43 // there are not global scopes or additional global scopes are necessary. | |
44 virtual void AddWorkletGlobalScopesIfNeeded() = 0; | |
kouhei (in TOK)
2017/05/08 13:13:19
Can we have a virtual WorkletGlobalScopeProxy* Cre
nhiroki
2017/05/10 09:01:31
Replaced this with NeedsToCreateGlobalScope() and
| |
45 | |
46 // "A Worklet has a list of the worklet's WorkletGlobalScopes. Initially this | |
47 // list is empty; it is populated when the user agent chooses to create its | |
48 // WorkletGlobalScope." | |
49 // https://drafts.css-houdini.org/worklets/#worklet-section | |
50 // TODO(nhiroki): Make (Paint)WorkletGlobalScopeProxy GC-managed object to | |
51 // avoid that GC graphs are disjointed (PaintWorkletGlobalScopeProxy has a | |
52 // persistent holder for PaintWorkletGlobalscope). | |
kouhei (in TOK)
2017/05/08 13:13:19
+1. Can we give a crbug # to this?
nhiroki
2017/05/10 09:01:31
Added a crbug link.
| |
53 WTF::HashSet<std::unique_ptr<WorkletGlobalScopeProxy>> global_scope_proxies_; | |
54 | |
41 private: | 55 private: |
42 void FetchAndInvokeScript(const KURL& module_url_record, | 56 void FetchAndInvokeScript(const KURL& module_url_record, |
43 ScriptPromiseResolver*); | 57 ScriptPromiseResolver*); |
44 }; | 58 }; |
45 | 59 |
46 } // namespace blink | 60 } // namespace blink |
47 | 61 |
48 #endif // MainThreadWorklet_h | 62 #endif // MainThreadWorklet_h |
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