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
|
/*
* Copyright (C) 2016 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.
*/
#include <thread>
#include <gtest/gtest.h>
#include <utils/SystemClock.h>
#include "vehicle_hal_manager/VehicleObjectPool.h"
namespace android {
namespace hardware {
namespace automotive {
namespace vehicle {
namespace V2_0 {
namespace {
class VehicleObjectPoolTest : public ::testing::Test {
protected:
void SetUp() override {
stats = PoolStats::instance();
resetStats();
valuePool.reset(new VehiclePropValuePool);
}
void TearDown() override {
// At the end, all created objects should be either recycled or deleted.
// Some objects could be recycled multiple times, that's why it's <=
ASSERT_EQ(stats->Obtained, stats->Recycled);
ASSERT_LE(stats->Created, stats->Recycled);
}
private:
void resetStats() {
stats->Obtained = 0;
stats->Created = 0;
stats->Recycled = 0;
}
public:
PoolStats* stats;
std::unique_ptr<VehiclePropValuePool> valuePool;
};
TEST_F(VehicleObjectPoolTest, valuePoolBasicCorrectness) {
void* raw = valuePool->obtain(VehiclePropertyType::INT32).get();
// At this point, v1 should be recycled and the only object in the pool.
ASSERT_EQ(raw, valuePool->obtain(VehiclePropertyType::INT32).get());
// Obtaining value of another type - should return a new object
ASSERT_NE(raw, valuePool->obtain(VehiclePropertyType::FLOAT).get());
ASSERT_EQ(3u, stats->Obtained);
ASSERT_EQ(2u, stats->Created);
}
TEST_F(VehicleObjectPoolTest, valuePoolStrings) {
valuePool->obtain(VehiclePropertyType::STRING);
auto vs = valuePool->obtain(VehiclePropertyType::STRING);
vs->value.stringValue = "Hello";
void* raw = vs.get();
vs.reset(); // delete the pointer
auto vs2 = valuePool->obtain(VehiclePropertyType::STRING);
ASSERT_EQ(0u, vs2->value.stringValue.size());
ASSERT_NE(raw, valuePool->obtain(VehiclePropertyType::STRING).get());
ASSERT_EQ(0u, stats->Obtained);
}
TEST_F(VehicleObjectPoolTest, valuePoolMultithreadedBenchmark) {
// In this test we have T threads that concurrently in C cycles
// obtain and release O VehiclePropValue objects of FLOAT / INT32 types.
const int T = 2;
const int C = 500;
const int O = 100;
auto poolPtr = valuePool.get();
std::vector<std::thread> threads;
auto start = elapsedRealtimeNano();
for (int i = 0; i < T; i++) {
threads.push_back(std::thread([&poolPtr] () {
for (int j = 0; j < C; j++) {
std::vector<recyclable_ptr<VehiclePropValue>> vec;
for (int k = 0; k < O; k++) {
vec.push_back(
poolPtr->obtain(k % 2 == 0
? VehiclePropertyType::FLOAT
: VehiclePropertyType::INT32));
}
}
}));
}
for (auto& t : threads) {
t.join();
}
auto finish = elapsedRealtimeNano();
ASSERT_EQ(static_cast<uint32_t>(T * C * O), stats->Obtained);
ASSERT_EQ(static_cast<uint32_t>(T * C * O), stats->Recycled);
// Created less than obtained.
ASSERT_GE(static_cast<uint32_t>(T * O), stats->Created);
auto elapsedMs = (finish - start) / 1000000;
ASSERT_GE(1000, elapsedMs); // Less a second to access 100K objects.
// Typically it takes about 0.1s on Nexus6P.
}
} // namespace anonymous
} // namespace V2_0
} // namespace vehicle
} // namespace automotive
} // namespace hardware
} // namespace android
|
