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Side by Side Diff: Source/bindings/v8/ScriptPromiseResolverWithContext.cpp

Issue 243703007: Enable V8 Promises. (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Created 6 years, 8 months ago
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1 // Copyright 2014 The Chromium Authors. All rights reserved. 1 // Copyright 2014 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 "config.h" 5 #include "config.h"
6 #include "bindings/v8/ScriptPromiseResolverWithContext.h" 6 #include "bindings/v8/ScriptPromiseResolverWithContext.h"
7 7
8 #include "bindings/v8/V8PerIsolateData.h"
9 #include "core/dom/ExecutionContextTask.h"
10 #include "wtf/PassOwnPtr.h"
11
8 namespace WebCore { 12 namespace WebCore {
9 13
14 namespace {
15
16 class RunMicrotasksTask FINAL : public ExecutionContextTask {
17 public:
18 static PassOwnPtr<RunMicrotasksTask> create(NewScriptState* scriptState)
19 {
20 return adoptPtr<RunMicrotasksTask>(new RunMicrotasksTask(scriptState));
21 }
22
23 virtual void performTask(ExecutionContext* executionContext) OVERRIDE
24 {
25 if (m_scriptState->contextIsEmpty())
26 return;
27 if (executionContext->activeDOMObjectsAreStopped())
28 return;
29 NewScriptState::Scope scope(m_scriptState.get());
30 v8::V8::RunMicrotasks(m_scriptState->isolate());
31 }
32
33 private:
34 explicit RunMicrotasksTask(NewScriptState* scriptState) : m_scriptState(scri ptState) { }
35 RefPtr<NewScriptState> m_scriptState;
36 };
37
38 } // namespace
39
10 ScriptPromiseResolverWithContext::ScriptPromiseResolverWithContext(NewScriptStat e* scriptState) 40 ScriptPromiseResolverWithContext::ScriptPromiseResolverWithContext(NewScriptStat e* scriptState)
11 : ActiveDOMObject(scriptState->executionContext()) 41 : ActiveDOMObject(scriptState->executionContext())
12 , m_state(Pending) 42 , m_state(Pending)
13 , m_scriptState(scriptState) 43 , m_scriptState(scriptState)
14 , m_timer(this, &ScriptPromiseResolverWithContext::resolveOrRejectImmediatel y) 44 , m_timer(this, &ScriptPromiseResolverWithContext::onTimerFired)
15 , m_resolver(ScriptPromiseResolver::create(m_scriptState->executionContext() )) { } 45 , m_resolver(ScriptPromiseResolver::create(m_scriptState->executionContext() )) { }
16 46
17 void ScriptPromiseResolverWithContext::suspend() 47 void ScriptPromiseResolverWithContext::suspend()
18 { 48 {
19 m_timer.stop(); 49 m_timer.stop();
20 } 50 }
21 51
22 void ScriptPromiseResolverWithContext::resume() 52 void ScriptPromiseResolverWithContext::resume()
23 { 53 {
24 if (m_state == Resolving || m_state == Rejecting) 54 if (m_state == Resolving || m_state == Rejecting)
25 m_timer.startOneShot(0, FROM_HERE); 55 m_timer.startOneShot(0, FROM_HERE);
26 } 56 }
27 57
28 void ScriptPromiseResolverWithContext::stop() 58 void ScriptPromiseResolverWithContext::stop()
29 { 59 {
30 m_timer.stop(); 60 m_timer.stop();
31 clear(); 61 clear();
32 } 62 }
33 63
34 void ScriptPromiseResolverWithContext::resolveOrRejectImmediately(Timer<ScriptPr omiseResolverWithContext>*) 64 void ScriptPromiseResolverWithContext::onTimerFired(Timer<ScriptPromiseResolverW ithContext>*)
65 {
66 RefPtr<ScriptPromiseResolverWithContext> protect(this);
67 NewScriptState::Scope scope(m_scriptState.get());
68 v8::Isolate* isolate = m_scriptState->isolate();
69 resolveOrRejectImmediately();
70
71 // There is no need to post a RunMicrotasksTask because it is safe to
72 // call RunMicrotasks here.
73 v8::V8::RunMicrotasks(isolate);
74 }
75
76 void ScriptPromiseResolverWithContext::resolveOrRejectImmediately()
35 { 77 {
36 ASSERT(!executionContext()->activeDOMObjectsAreStopped()); 78 ASSERT(!executionContext()->activeDOMObjectsAreStopped());
37 ASSERT(!executionContext()->activeDOMObjectsAreSuspended()); 79 ASSERT(!executionContext()->activeDOMObjectsAreSuspended());
38 if (m_state == Resolving) { 80 if (m_state == Resolving) {
39 NewScriptState::Scope scope(m_scriptState.get());
40 m_resolver->resolve(m_value.newLocal(m_scriptState->isolate())); 81 m_resolver->resolve(m_value.newLocal(m_scriptState->isolate()));
41 } else { 82 } else {
42 ASSERT(m_state == Rejecting); 83 ASSERT(m_state == Rejecting);
43 NewScriptState::Scope scope(m_scriptState.get());
44 m_resolver->reject(m_value.newLocal(m_scriptState->isolate())); 84 m_resolver->reject(m_value.newLocal(m_scriptState->isolate()));
45 } 85 }
46 m_state = ResolvedOrRejected;
47 clear(); 86 clear();
48 } 87 }
49 88
89 void ScriptPromiseResolverWithContext::postRunMicrotasks()
90 {
91 executionContext()->postTask(RunMicrotasksTask::create(m_scriptState.get())) ;
92 }
93
50 void ScriptPromiseResolverWithContext::clear() 94 void ScriptPromiseResolverWithContext::clear()
51 { 95 {
96 ResolutionState state = m_state;
97 m_state = ResolvedOrRejected;
52 m_resolver.clear(); 98 m_resolver.clear();
53 m_value.clear(); 99 m_value.clear();
100 if (state == Resolving || state == Rejecting) {
101 // |ref| was called in |resolveOrReject|.
102 deref();
103 }
104 // |this| may be deleted here.
54 } 105 }
55 106
56 } // namespace WebCore 107 } // namespace WebCore
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