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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 #include "core/workers/MainThreadWorklet.h" | 5 #include "core/workers/MainThreadWorklet.h" |
6 | 6 |
7 #include "bindings/core/v8/ScriptSourceCode.h" | 7 #include "bindings/core/v8/ScriptSourceCode.h" |
8 #include "bindings/core/v8/V8BindingForCore.h" | 8 #include "bindings/core/v8/V8BindingForCore.h" |
9 #include "core/dom/DOMException.h" | 9 #include "core/dom/DOMException.h" |
10 #include "core/dom/Document.h" | 10 #include "core/dom/Document.h" |
11 #include "core/dom/ExceptionCode.h" | 11 #include "core/dom/ExceptionCode.h" |
12 #include "core/frame/LocalFrame.h" | 12 #include "core/frame/LocalFrame.h" |
13 #include "core/workers/WorkletGlobalScopeProxy.h" | 13 #include "core/workers/WorkletGlobalScopeProxy.h" |
| 14 #include "core/workers/WorkletPendingTasks.h" |
14 #include "platform/wtf/WTF.h" | 15 #include "platform/wtf/WTF.h" |
15 | 16 |
16 namespace blink { | 17 namespace blink { |
17 | 18 |
18 namespace { | 19 MainThreadWorklet::MainThreadWorklet(LocalFrame* frame) : Worklet(frame) {} |
19 | 20 |
20 int32_t GetNextRequestId() { | 21 // Implementation of the "addModule(moduleURL, options)" algorithm: |
21 DCHECK(IsMainThread()); | 22 // https://drafts.css-houdini.org/worklets/#dom-worklet-addmodule |
22 static int32_t next_request_id = 1; | |
23 CHECK_LT(next_request_id, std::numeric_limits<int32_t>::max()); | |
24 return next_request_id++; | |
25 } | |
26 | |
27 } // namespace | |
28 | |
29 MainThreadWorklet::MainThreadWorklet(LocalFrame* frame) : Worklet(frame) { | |
30 DCHECK(resolver_map_.IsEmpty()); | |
31 } | |
32 | |
33 ScriptPromise MainThreadWorklet::addModule(ScriptState* script_state, | 23 ScriptPromise MainThreadWorklet::addModule(ScriptState* script_state, |
34 const String& url) { | 24 const String& module_url) { |
35 DCHECK(IsMainThread()); | 25 DCHECK(IsMainThread()); |
36 if (!GetExecutionContext()) { | 26 if (!GetExecutionContext()) { |
37 return ScriptPromise::RejectWithDOMException( | 27 return ScriptPromise::RejectWithDOMException( |
38 script_state, DOMException::Create(kInvalidStateError, | 28 script_state, DOMException::Create(kInvalidStateError, |
39 "This frame is already detached")); | 29 "This frame is already detached")); |
40 } | 30 } |
41 | 31 |
42 KURL script_url = GetExecutionContext()->CompleteURL(url); | 32 KURL module_url_record = GetExecutionContext()->CompleteURL(module_url); |
43 if (!script_url.IsValid()) { | 33 if (!module_url_record.IsValid()) { |
44 return ScriptPromise::RejectWithDOMException( | 34 return ScriptPromise::RejectWithDOMException( |
45 script_state, DOMException::Create( | 35 script_state, |
46 kSyntaxError, "'" + url + "' is not a valid URL.")); | 36 DOMException::Create(kSyntaxError, |
| 37 "'" + module_url + "' is not a valid URL.")); |
47 } | 38 } |
48 | 39 |
49 int32_t request_id = GetNextRequestId(); | |
50 ScriptPromiseResolver* resolver = ScriptPromiseResolver::Create(script_state); | 40 ScriptPromiseResolver* resolver = ScriptPromiseResolver::Create(script_state); |
51 ScriptPromise promise = resolver->Promise(); | 41 ScriptPromise promise = resolver->Promise(); |
52 resolver_map_.Set(request_id, resolver); | 42 |
53 GetWorkletGlobalScopeProxy()->FetchAndInvokeScript(request_id, script_url); | 43 // Step 11: "Let pendingTaskStruct be a new pending tasks struct with counter |
| 44 // initialized to the length of worklet's WorkletGlobalScopes." |
| 45 // TODO(nhiroki): Introduce the concept of "worklet's WorkletGlobalScopes" and |
| 46 // use the length of it here. |
| 47 constexpr int number_of_global_scopes = 1; |
| 48 WorkletPendingTasks* pending_tasks = |
| 49 new WorkletPendingTasks(number_of_global_scopes, resolver); |
| 50 |
| 51 // Step 12: "For each workletGlobalScope in the worklet's |
| 52 // WorkletGlobalScopes, queue a task on the workletGlobalScope to fetch and |
| 53 // invoke a worklet script given workletGlobalScope, moduleURLRecord, |
| 54 // moduleResponsesMap, credentialOptions, outsideSettings, pendingTaskStruct, |
| 55 // and promise." |
| 56 // TODO(nhiroki): Pass the remaining parameters (e.g., credentialOptions). |
| 57 // TODO(nhiroki): Queue a task instead of executing this here. |
| 58 GetWorkletGlobalScopeProxy()->FetchAndInvokeScript(module_url_record, |
| 59 pending_tasks); |
54 return promise; | 60 return promise; |
55 } | 61 } |
56 | 62 |
57 void MainThreadWorklet::DidFetchAndInvokeScript(int32_t request_id, | |
58 bool success) { | |
59 DCHECK(IsMainThread()); | |
60 ScriptPromiseResolver* resolver = resolver_map_.at(request_id); | |
61 if (!resolver) | |
62 return; | |
63 resolver_map_.erase(request_id); | |
64 if (!success) { | |
65 resolver->Reject(DOMException::Create(kNetworkError)); | |
66 return; | |
67 } | |
68 resolver->Resolve(); | |
69 } | |
70 | |
71 void MainThreadWorklet::ContextDestroyed(ExecutionContext* execution_context) { | 63 void MainThreadWorklet::ContextDestroyed(ExecutionContext* execution_context) { |
72 DCHECK(IsMainThread()); | 64 DCHECK(IsMainThread()); |
73 resolver_map_.clear(); | |
74 GetWorkletGlobalScopeProxy()->TerminateWorkletGlobalScope(); | 65 GetWorkletGlobalScopeProxy()->TerminateWorkletGlobalScope(); |
75 Worklet::ContextDestroyed(execution_context); | 66 Worklet::ContextDestroyed(execution_context); |
76 } | 67 } |
77 | 68 |
78 DEFINE_TRACE(MainThreadWorklet) { | 69 DEFINE_TRACE(MainThreadWorklet) { |
79 visitor->Trace(resolver_map_); | |
80 Worklet::Trace(visitor); | 70 Worklet::Trace(visitor); |
81 } | 71 } |
82 | 72 |
83 } // namespace blink | 73 } // namespace blink |
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