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
|
/* -*- 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 "mozilla/dom/ReportingObserver.h"
#include "mozilla/dom/Report.h"
#include "mozilla/dom/ReportingBinding.h"
#include "nsContentUtils.h"
#include "nsIGlobalObject.h"
#include "nsThreadUtils.h"
namespace mozilla::dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(ReportingObserver)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(ReportingObserver)
tmp->Disconnect();
NS_IMPL_CYCLE_COLLECTION_UNLINK(mReports)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mGlobal)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mCallback)
NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(ReportingObserver)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mReports)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobal)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mCallback)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
/* static */
already_AddRefed<ReportingObserver> ReportingObserver::Constructor(
const GlobalObject& aGlobal, ReportingObserverCallback& aCallback,
const ReportingObserverOptions& aOptions, ErrorResult& aRv) {
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aGlobal.GetAsSupports());
MOZ_ASSERT(global);
nsTArray<nsString> types;
if (aOptions.mTypes.WasPassed()) {
types = aOptions.mTypes.Value();
}
RefPtr<ReportingObserver> ro =
new ReportingObserver(global, aCallback, types, aOptions.mBuffered);
return ro.forget();
}
ReportingObserver::ReportingObserver(nsIGlobalObject* aGlobal,
ReportingObserverCallback& aCallback,
const nsTArray<nsString>& aTypes,
bool aBuffered)
: mGlobal(aGlobal),
mCallback(&aCallback),
mTypes(aTypes.Clone()),
mBuffered(aBuffered) {
MOZ_ASSERT(aGlobal);
}
ReportingObserver::~ReportingObserver() { Disconnect(); }
JSObject* ReportingObserver::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return ReportingObserver_Binding::Wrap(aCx, this, aGivenProto);
}
void ReportingObserver::Observe() {
mGlobal->RegisterReportingObserver(this, mBuffered);
}
void ReportingObserver::Disconnect() {
if (mGlobal) {
mGlobal->UnregisterReportingObserver(this);
}
}
void ReportingObserver::TakeRecords(nsTArray<RefPtr<Report>>& aRecords) {
mReports.SwapElements(aRecords);
}
namespace {
class ReportRunnable final : public DiscardableRunnable {
public:
explicit ReportRunnable(nsIGlobalObject* aGlobal)
: DiscardableRunnable("ReportRunnable"), mGlobal(aGlobal) {}
// MOZ_CAN_RUN_SCRIPT_BOUNDARY until Runnable::Run is MOZ_CAN_RUN_SCRIPT. See
// bug 1535398.
MOZ_CAN_RUN_SCRIPT_BOUNDARY NS_IMETHOD Run() override {
MOZ_KnownLive(mGlobal)->NotifyReportingObservers();
return NS_OK;
}
private:
const nsCOMPtr<nsIGlobalObject> mGlobal;
};
} // namespace
void ReportingObserver::MaybeReport(Report* aReport) {
MOZ_ASSERT(aReport);
if (!mTypes.IsEmpty()) {
nsAutoString type;
aReport->GetType(type);
if (!mTypes.Contains(type)) {
return;
}
}
bool wasEmpty = mReports.IsEmpty();
RefPtr<Report> report = aReport->Clone();
MOZ_ASSERT(report);
if (NS_WARN_IF(!mReports.AppendElement(report, fallible))) {
return;
}
if (!wasEmpty) {
return;
}
RefPtr<ReportRunnable> r = new ReportRunnable(mGlobal);
NS_DispatchToCurrentThread(r);
}
void ReportingObserver::MaybeNotify() {
if (mReports.IsEmpty()) {
return;
}
// Let's take the ownership of the reports.
nsTArray<RefPtr<Report>> list = std::move(mReports);
Sequence<OwningNonNull<Report>> reports;
for (Report* report : list) {
if (NS_WARN_IF(!reports.AppendElement(*report, fallible))) {
return;
}
}
// We should report if this throws exception. But where?
RefPtr<ReportingObserverCallback> callback(mCallback);
callback->Call(reports, *this);
}
void ReportingObserver::ForgetReports() { mReports.Clear(); }
} // namespace mozilla::dom
|
