blob: 15a798a4d87c7ff8dd8629da435c7aeea87bf25c (
plain)
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
|
/* -*- 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 "ServiceWorkerJobQueue.h"
#include "ServiceWorkerJob.h"
#include "Workers.h"
namespace mozilla {
namespace dom {
namespace workers {
class ServiceWorkerJobQueue::Callback final : public ServiceWorkerJob::Callback
{
RefPtr<ServiceWorkerJobQueue> mQueue;
~Callback()
{
}
public:
explicit Callback(ServiceWorkerJobQueue* aQueue)
: mQueue(aQueue)
{
AssertIsOnMainThread();
MOZ_ASSERT(mQueue);
}
virtual void
JobFinished(ServiceWorkerJob* aJob, ErrorResult& aStatus) override
{
AssertIsOnMainThread();
mQueue->JobFinished(aJob);
}
NS_INLINE_DECL_REFCOUNTING(ServiceWorkerJobQueue::Callback, override)
};
ServiceWorkerJobQueue::~ServiceWorkerJobQueue()
{
AssertIsOnMainThread();
MOZ_ASSERT(mJobList.IsEmpty());
}
void
ServiceWorkerJobQueue::JobFinished(ServiceWorkerJob* aJob)
{
AssertIsOnMainThread();
MOZ_ASSERT(aJob);
// XXX There are some corner cases where jobs can double-complete. Until
// we track all these down we do a non-fatal assert in debug builds and
// a runtime check to verify the queue is in the correct state.
NS_ASSERTION(!mJobList.IsEmpty(),
"Job queue should contain the job that just completed.");
NS_ASSERTION(mJobList.SafeElementAt(0, nullptr) == aJob,
"Job queue should contain the job that just completed.");
if (NS_WARN_IF(mJobList.SafeElementAt(0, nullptr) != aJob)) {
return;
}
mJobList.RemoveElementAt(0);
if (mJobList.IsEmpty()) {
return;
}
RunJob();
}
void
ServiceWorkerJobQueue::RunJob()
{
AssertIsOnMainThread();
MOZ_ASSERT(!mJobList.IsEmpty());
MOZ_ASSERT(mJobList[0]->GetState() == ServiceWorkerJob::State::Initial);
RefPtr<Callback> callback = new Callback(this);
mJobList[0]->Start(callback);
}
ServiceWorkerJobQueue::ServiceWorkerJobQueue()
{
AssertIsOnMainThread();
}
void
ServiceWorkerJobQueue::ScheduleJob(ServiceWorkerJob* aJob)
{
AssertIsOnMainThread();
MOZ_ASSERT(aJob);
MOZ_ASSERT(!mJobList.Contains(aJob));
if (mJobList.IsEmpty()) {
mJobList.AppendElement(aJob);
RunJob();
return;
}
MOZ_ASSERT(mJobList[0]->GetState() == ServiceWorkerJob::State::Started);
RefPtr<ServiceWorkerJob>& tailJob = mJobList[mJobList.Length() - 1];
if (!tailJob->ResultCallbacksInvoked() && aJob->IsEquivalentTo(tailJob)) {
tailJob->StealResultCallbacksFrom(aJob);
return;
}
mJobList.AppendElement(aJob);
}
void
ServiceWorkerJobQueue::CancelAll()
{
AssertIsOnMainThread();
for (RefPtr<ServiceWorkerJob>& job : mJobList) {
job->Cancel();
}
// Remove jobs that are queued but not started since they should never
// run after being canceled. This means throwing away all jobs except
// for the job at the front of the list.
if (!mJobList.IsEmpty()) {
MOZ_ASSERT(mJobList[0]->GetState() == ServiceWorkerJob::State::Started);
mJobList.TruncateLength(1);
}
}
} // namespace workers
} // namespace dom
} // namespace mozilla
|
