1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "ServiceWorkerInfo.h"
#include "ServiceWorker.h"
#include "ServiceWorkerPrivate.h"
#include "ServiceWorkerScriptCache.h"
BEGIN_WORKERS_NAMESPACE
static_assert(nsIServiceWorkerInfo::STATE_INSTALLING == static_cast<uint16_t>(ServiceWorkerState::Installing),
"ServiceWorkerState enumeration value should match state values from nsIServiceWorkerInfo.");
static_assert(nsIServiceWorkerInfo::STATE_INSTALLED == static_cast<uint16_t>(ServiceWorkerState::Installed),
"ServiceWorkerState enumeration value should match state values from nsIServiceWorkerInfo.");
static_assert(nsIServiceWorkerInfo::STATE_ACTIVATING == static_cast<uint16_t>(ServiceWorkerState::Activating),
"ServiceWorkerState enumeration value should match state values from nsIServiceWorkerInfo.");
static_assert(nsIServiceWorkerInfo::STATE_ACTIVATED == static_cast<uint16_t>(ServiceWorkerState::Activated),
"ServiceWorkerState enumeration value should match state values from nsIServiceWorkerInfo.");
static_assert(nsIServiceWorkerInfo::STATE_REDUNDANT == static_cast<uint16_t>(ServiceWorkerState::Redundant),
"ServiceWorkerState enumeration value should match state values from nsIServiceWorkerInfo.");
static_assert(nsIServiceWorkerInfo::STATE_UNKNOWN == static_cast<uint16_t>(ServiceWorkerState::EndGuard_),
"ServiceWorkerState enumeration value should match state values from nsIServiceWorkerInfo.");
NS_IMPL_ISUPPORTS(ServiceWorkerInfo, nsIServiceWorkerInfo)
NS_IMETHODIMP
ServiceWorkerInfo::GetScriptSpec(nsAString& aScriptSpec)
{
AssertIsOnMainThread();
CopyUTF8toUTF16(mScriptSpec, aScriptSpec);
return NS_OK;
}
NS_IMETHODIMP
ServiceWorkerInfo::GetCacheName(nsAString& aCacheName)
{
AssertIsOnMainThread();
aCacheName = mCacheName;
return NS_OK;
}
NS_IMETHODIMP
ServiceWorkerInfo::GetState(uint16_t* aState)
{
MOZ_ASSERT(aState);
AssertIsOnMainThread();
*aState = static_cast<uint16_t>(mState);
return NS_OK;
}
NS_IMETHODIMP
ServiceWorkerInfo::GetDebugger(nsIWorkerDebugger** aResult)
{
if (NS_WARN_IF(!aResult)) {
return NS_ERROR_FAILURE;
}
return mServiceWorkerPrivate->GetDebugger(aResult);
}
NS_IMETHODIMP
ServiceWorkerInfo::AttachDebugger()
{
return mServiceWorkerPrivate->AttachDebugger();
}
NS_IMETHODIMP
ServiceWorkerInfo::DetachDebugger()
{
return mServiceWorkerPrivate->DetachDebugger();
}
void
ServiceWorkerInfo::AppendWorker(ServiceWorker* aWorker)
{
MOZ_ASSERT(aWorker);
#ifdef DEBUG
nsAutoString workerURL;
aWorker->GetScriptURL(workerURL);
MOZ_ASSERT(workerURL.Equals(NS_ConvertUTF8toUTF16(mScriptSpec)));
#endif
MOZ_ASSERT(!mInstances.Contains(aWorker));
mInstances.AppendElement(aWorker);
aWorker->SetState(State());
}
void
ServiceWorkerInfo::RemoveWorker(ServiceWorker* aWorker)
{
MOZ_ASSERT(aWorker);
#ifdef DEBUG
nsAutoString workerURL;
aWorker->GetScriptURL(workerURL);
MOZ_ASSERT(workerURL.Equals(NS_ConvertUTF8toUTF16(mScriptSpec)));
#endif
MOZ_ASSERT(mInstances.Contains(aWorker));
mInstances.RemoveElement(aWorker);
}
namespace {
class ChangeStateUpdater final : public Runnable
{
public:
ChangeStateUpdater(const nsTArray<ServiceWorker*>& aInstances,
ServiceWorkerState aState)
: mState(aState)
{
for (size_t i = 0; i < aInstances.Length(); ++i) {
mInstances.AppendElement(aInstances[i]);
}
}
NS_IMETHOD Run() override
{
// We need to update the state of all instances atomically before notifying
// them to make sure that the observed state for all instances inside
// statechange event handlers is correct.
for (size_t i = 0; i < mInstances.Length(); ++i) {
mInstances[i]->SetState(mState);
}
for (size_t i = 0; i < mInstances.Length(); ++i) {
mInstances[i]->DispatchStateChange(mState);
}
return NS_OK;
}
private:
AutoTArray<RefPtr<ServiceWorker>, 1> mInstances;
ServiceWorkerState mState;
};
}
void
ServiceWorkerInfo::UpdateState(ServiceWorkerState aState)
{
AssertIsOnMainThread();
#ifdef DEBUG
// Any state can directly transition to redundant, but everything else is
// ordered.
if (aState != ServiceWorkerState::Redundant) {
MOZ_ASSERT_IF(mState == ServiceWorkerState::EndGuard_, aState == ServiceWorkerState::Installing);
MOZ_ASSERT_IF(mState == ServiceWorkerState::Installing, aState == ServiceWorkerState::Installed);
MOZ_ASSERT_IF(mState == ServiceWorkerState::Installed, aState == ServiceWorkerState::Activating);
MOZ_ASSERT_IF(mState == ServiceWorkerState::Activating, aState == ServiceWorkerState::Activated);
}
// Activated can only go to redundant.
MOZ_ASSERT_IF(mState == ServiceWorkerState::Activated, aState == ServiceWorkerState::Redundant);
#endif
// Flush any pending functional events to the worker when it transitions to the
// activated state.
// TODO: Do we care that these events will race with the propagation of the
// state change?
if (aState == ServiceWorkerState::Activated && mState != aState) {
mServiceWorkerPrivate->Activated();
}
mState = aState;
nsCOMPtr<nsIRunnable> r = new ChangeStateUpdater(mInstances, mState);
MOZ_ALWAYS_SUCCEEDS(NS_DispatchToMainThread(r.forget()));
if (mState == ServiceWorkerState::Redundant) {
serviceWorkerScriptCache::PurgeCache(mPrincipal, mCacheName);
}
}
ServiceWorkerInfo::ServiceWorkerInfo(nsIPrincipal* aPrincipal,
const nsACString& aScope,
const nsACString& aScriptSpec,
const nsAString& aCacheName)
: mPrincipal(aPrincipal)
, mScope(aScope)
, mScriptSpec(aScriptSpec)
, mCacheName(aCacheName)
, mState(ServiceWorkerState::EndGuard_)
, mServiceWorkerID(GetNextID())
, mServiceWorkerPrivate(new ServiceWorkerPrivate(this))
, mSkipWaitingFlag(false)
{
MOZ_ASSERT(mPrincipal);
// cache origin attributes so we can use them off main thread
mOriginAttributes = BasePrincipal::Cast(mPrincipal)->OriginAttributesRef();
MOZ_ASSERT(!mScope.IsEmpty());
MOZ_ASSERT(!mScriptSpec.IsEmpty());
MOZ_ASSERT(!mCacheName.IsEmpty());
}
ServiceWorkerInfo::~ServiceWorkerInfo()
{
MOZ_ASSERT(mServiceWorkerPrivate);
mServiceWorkerPrivate->NoteDeadServiceWorkerInfo();
}
static uint64_t gServiceWorkerInfoCurrentID = 0;
uint64_t
ServiceWorkerInfo::GetNextID() const
{
return ++gServiceWorkerInfoCurrentID;
}
already_AddRefed<ServiceWorker>
ServiceWorkerInfo::GetOrCreateInstance(nsPIDOMWindowInner* aWindow)
{
AssertIsOnMainThread();
MOZ_ASSERT(aWindow);
RefPtr<ServiceWorker> ref;
for (uint32_t i = 0; i < mInstances.Length(); ++i) {
MOZ_ASSERT(mInstances[i]);
if (mInstances[i]->GetOwner() == aWindow) {
ref = mInstances[i];
break;
}
}
if (!ref) {
ref = new ServiceWorker(aWindow, this);
}
return ref.forget();
}
END_WORKERS_NAMESPACE
|
