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
|
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/renderer/gpu/frame_swap_message_queue.h"
#include <limits>
#include "base/containers/hash_tables.h"
#include "base/logging.h"
#include "base/stl_util.h"
#include "ipc/ipc_message.h"
using std::vector;
namespace content {
class FrameSwapMessageSubQueue {
public:
FrameSwapMessageSubQueue() {}
virtual ~FrameSwapMessageSubQueue() {}
virtual bool Empty() const = 0;
virtual void QueueMessage(int source_frame_number,
scoped_ptr<IPC::Message> msg,
bool* is_first) = 0;
virtual void DrainMessages(int source_frame_number,
ScopedVector<IPC::Message>* messages) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(FrameSwapMessageSubQueue);
};
namespace {
// Queue specific to MESSAGE_DELIVERY_POLICY_WITH_VISUAL_STATE.
class SendMessageScopeImpl : public FrameSwapMessageQueue::SendMessageScope {
public:
SendMessageScopeImpl(base::Lock* lock) : auto_lock_(*lock) {}
virtual ~SendMessageScopeImpl() OVERRIDE {}
private:
base::AutoLock auto_lock_;
};
class VisualStateQueue : public FrameSwapMessageSubQueue {
public:
VisualStateQueue() {}
virtual ~VisualStateQueue() {
for (VisualStateQueueMap::iterator i = queue_.begin(); i != queue_.end();
i++) {
STLDeleteElements(&i->second);
}
}
virtual bool Empty() const OVERRIDE { return queue_.empty(); }
virtual void QueueMessage(int source_frame_number,
scoped_ptr<IPC::Message> msg,
bool* is_first) OVERRIDE {
if (is_first)
*is_first = (queue_.count(source_frame_number) == 0);
queue_[source_frame_number].push_back(msg.release());
}
virtual void DrainMessages(int source_frame_number,
ScopedVector<IPC::Message>* messages) OVERRIDE {
VisualStateQueueMap::iterator end = queue_.upper_bound(source_frame_number);
for (VisualStateQueueMap::iterator i = queue_.begin(); i != end; i++) {
DCHECK(i->first <= source_frame_number);
messages->insert(messages->end(), i->second.begin(), i->second.end());
i->second.clear();
}
queue_.erase(queue_.begin(), end);
}
private:
typedef std::map<int, std::vector<IPC::Message*> > VisualStateQueueMap;
VisualStateQueueMap queue_;
DISALLOW_COPY_AND_ASSIGN(VisualStateQueue);
};
// Queue specific to MESSAGE_DELIVERY_POLICY_WITH_NEXT_SWAP.
class SwapQueue : public FrameSwapMessageSubQueue {
public:
SwapQueue() {}
virtual bool Empty() const OVERRIDE { return queue_.empty(); }
virtual void QueueMessage(int source_frame_number,
scoped_ptr<IPC::Message> msg,
bool* is_first) OVERRIDE {
if (is_first)
*is_first = Empty();
queue_.push_back(msg.release());
}
virtual void DrainMessages(int source_frame_number,
ScopedVector<IPC::Message>* messages) OVERRIDE {
messages->insert(messages->end(), queue_.begin(), queue_.end());
queue_.weak_clear();
}
private:
ScopedVector<IPC::Message> queue_;
DISALLOW_COPY_AND_ASSIGN(SwapQueue);
};
} // namespace
FrameSwapMessageQueue::FrameSwapMessageQueue()
: visual_state_queue_(new VisualStateQueue()),
swap_queue_(new SwapQueue()) {
}
FrameSwapMessageQueue::~FrameSwapMessageQueue() {
}
bool FrameSwapMessageQueue::Empty() const {
base::AutoLock lock(lock_);
return next_drain_messages_.empty() && visual_state_queue_->Empty() &&
swap_queue_->Empty();
}
FrameSwapMessageSubQueue* FrameSwapMessageQueue::GetSubQueue(
MessageDeliveryPolicy policy) {
switch (policy) {
case MESSAGE_DELIVERY_POLICY_WITH_NEXT_SWAP:
return swap_queue_.get();
break;
case MESSAGE_DELIVERY_POLICY_WITH_VISUAL_STATE:
return visual_state_queue_.get();
break;
}
NOTREACHED();
return NULL;
}
void FrameSwapMessageQueue::QueueMessageForFrame(MessageDeliveryPolicy policy,
int source_frame_number,
scoped_ptr<IPC::Message> msg,
bool* is_first) {
base::AutoLock lock(lock_);
GetSubQueue(policy)->QueueMessage(source_frame_number, msg.Pass(), is_first);
}
void FrameSwapMessageQueue::DidSwap(int source_frame_number) {
base::AutoLock lock(lock_);
visual_state_queue_->DrainMessages(source_frame_number,
&next_drain_messages_);
}
void FrameSwapMessageQueue::DidNotSwap(int source_frame_number,
cc::SwapPromise::DidNotSwapReason reason,
ScopedVector<IPC::Message>* messages) {
base::AutoLock lock(lock_);
switch (reason) {
case cc::SwapPromise::SWAP_FAILS:
case cc::SwapPromise::COMMIT_NO_UPDATE:
swap_queue_->DrainMessages(source_frame_number, messages);
// fallthrough
case cc::SwapPromise::COMMIT_FAILS:
visual_state_queue_->DrainMessages(source_frame_number, messages);
break;
default:
NOTREACHED();
}
}
void FrameSwapMessageQueue::DrainMessages(
ScopedVector<IPC::Message>* messages) {
lock_.AssertAcquired();
swap_queue_->DrainMessages(0, messages);
messages->insert(messages->end(),
next_drain_messages_.begin(),
next_drain_messages_.end());
next_drain_messages_.weak_clear();
}
scoped_ptr<FrameSwapMessageQueue::SendMessageScope>
FrameSwapMessageQueue::AcquireSendMessageScope() {
return make_scoped_ptr(new SendMessageScopeImpl(&lock_))
.PassAs<SendMessageScope>();
}
// static
void FrameSwapMessageQueue::TransferMessages(ScopedVector<IPC::Message>& source,
vector<IPC::Message>* dest) {
for (vector<IPC::Message*>::iterator i = source.begin(); i != source.end();
++i) {
IPC::Message* m(*i);
dest->push_back(*m);
delete m;
}
source.weak_clear();
}
} // namespace content
|
