blob: 8cd000c69aef3022107c0578714d65a5d6a83647 (
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
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "BroadcastChannelService.h"
#include "BroadcastChannelParent.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/ipc/BlobParent.h"
#include "mozilla/ipc/BackgroundParent.h"
#ifdef XP_WIN
#undef PostMessage
#endif
namespace mozilla {
using namespace ipc;
namespace dom {
namespace {
BroadcastChannelService* sInstance = nullptr;
} // namespace
BroadcastChannelService::BroadcastChannelService()
{
AssertIsOnBackgroundThread();
// sInstance is a raw BroadcastChannelService*.
MOZ_ASSERT(!sInstance);
sInstance = this;
}
BroadcastChannelService::~BroadcastChannelService()
{
AssertIsOnBackgroundThread();
MOZ_ASSERT(sInstance == this);
MOZ_ASSERT(mAgents.Count() == 0);
sInstance = nullptr;
}
// static
already_AddRefed<BroadcastChannelService>
BroadcastChannelService::GetOrCreate()
{
AssertIsOnBackgroundThread();
RefPtr<BroadcastChannelService> instance = sInstance;
if (!instance) {
instance = new BroadcastChannelService();
}
return instance.forget();
}
void
BroadcastChannelService::RegisterActor(BroadcastChannelParent* aParent,
const nsAString& aOriginChannelKey)
{
AssertIsOnBackgroundThread();
MOZ_ASSERT(aParent);
nsTArray<BroadcastChannelParent*>* parents;
if (!mAgents.Get(aOriginChannelKey, &parents)) {
parents = new nsTArray<BroadcastChannelParent*>();
mAgents.Put(aOriginChannelKey, parents);
}
MOZ_ASSERT(!parents->Contains(aParent));
parents->AppendElement(aParent);
}
void
BroadcastChannelService::UnregisterActor(BroadcastChannelParent* aParent,
const nsAString& aOriginChannelKey)
{
AssertIsOnBackgroundThread();
MOZ_ASSERT(aParent);
nsTArray<BroadcastChannelParent*>* parents;
if (!mAgents.Get(aOriginChannelKey, &parents)) {
MOZ_CRASH("Invalid state");
}
parents->RemoveElement(aParent);
if (parents->IsEmpty()) {
mAgents.Remove(aOriginChannelKey);
}
}
void
BroadcastChannelService::PostMessage(BroadcastChannelParent* aParent,
const ClonedMessageData& aData,
const nsAString& aOriginChannelKey)
{
AssertIsOnBackgroundThread();
MOZ_ASSERT(aParent);
nsTArray<BroadcastChannelParent*>* parents;
if (!mAgents.Get(aOriginChannelKey, &parents)) {
MOZ_CRASH("Invalid state");
}
// We need to keep the array alive for the life-time of this operation.
nsTArray<RefPtr<BlobImpl>> blobs;
if (!aData.blobsParent().IsEmpty()) {
blobs.SetCapacity(aData.blobsParent().Length());
for (uint32_t i = 0, len = aData.blobsParent().Length(); i < len; ++i) {
RefPtr<BlobImpl> impl =
static_cast<BlobParent*>(aData.blobsParent()[i])->GetBlobImpl();
MOZ_ASSERT(impl);
blobs.AppendElement(impl);
}
}
for (uint32_t i = 0; i < parents->Length(); ++i) {
BroadcastChannelParent* parent = parents->ElementAt(i);
MOZ_ASSERT(parent);
if (parent != aParent) {
parent->Deliver(aData);
}
}
}
} // namespace dom
} // namespace mozilla
|
