blob: 53f2adf27421560d92af65cf2ca80d6be96baa63 (
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
|
/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <gtest/gtest_prod.h>
#include <condition_variable>
#include <mutex>
#include <queue>
#include "LogEvent.h"
namespace android {
namespace os {
namespace statsd {
/**
* A zero copy thread safe queue buffer for producing and consuming LogEvent.
*/
class LogEventQueue {
public:
explicit LogEventQueue(size_t maxSize) : mQueueLimit(maxSize){};
/**
* Blocking read one event from the queue.
*/
std::unique_ptr<LogEvent> waitPop();
/**
* Puts a LogEvent ptr to the end of the queue.
* Returns false on failure when the queue is full, and output the oldest event timestamp
* in the queue.
*/
bool push(std::unique_ptr<LogEvent> event, int64_t* oldestTimestampNs);
private:
const size_t mQueueLimit;
std::condition_variable mCondition;
std::mutex mMutex;
std::queue<std::unique_ptr<LogEvent>> mQueue;
friend class SocketParseMessageTest;
FRIEND_TEST(SocketParseMessageTest, TestProcessMessage);
FRIEND_TEST(SocketParseMessageTest, TestProcessMessageEmptySetExplicitSet);
FRIEND_TEST(SocketParseMessageTest, TestProcessMessageFilterCompleteSet);
FRIEND_TEST(SocketParseMessageTest, TestProcessMessageFilterPartialSet);
FRIEND_TEST(SocketParseMessageTest, TestProcessMessageFilterToggle);
};
} // namespace statsd
} // namespace os
} // namespace android
|
