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
|
#include <mbgl/test/stub_file_source.hpp>
#include <mbgl/test/util.hpp>
#include <mbgl/map/map.hpp>
#include <mbgl/platform/default/headless_display.hpp>
#include <mbgl/platform/default/headless_view.hpp>
#include <mbgl/platform/default/thread_pool.hpp>
#include <mbgl/util/io.hpp>
#include <mbgl/util/run_loop.hpp>
#include <algorithm>
#include <iostream>
#include <iterator>
#include <string>
#include <unordered_map>
#include <utility>
#include <stdlib.h>
#include <unistd.h>
using namespace mbgl;
using namespace std::literals::string_literals;
long getRSS() {
auto statm = util::read_file("/proc/self/statm");
std::vector<std::string> stats;
std::istringstream stream(statm);
std::copy(std::istream_iterator<std::string>(stream),
std::istream_iterator<std::string>(),
std::back_inserter(stats));
return std::stol(stats[1]) * getpagesize();
}
bool isUsingJemalloc() {
const char* preload = getenv("LD_PRELOAD");
if (preload) {
return std::string(preload).find("libjemalloc.so") != std::string::npos;
} else {
return false;
}
}
class MemoryTest {
public:
MemoryTest() {
fileSource.styleResponse = [&](const Resource& res) { return response("style_" + getType(res) + ".json");};
fileSource.tileResponse = [&](const Resource& res) { return response(getType(res) + ".tile"); };
fileSource.sourceResponse = [&](const Resource& res) { return response("source_" + getType(res) + ".json"); };
fileSource.glyphsResponse = [&](const Resource&) { return response("glyphs.pbf"); };
fileSource.spriteJSONResponse = [&](const Resource&) { return response("sprite.json"); };
fileSource.spriteImageResponse = [&](const Resource&) { return response("sprite.png"); };
}
util::RunLoop runLoop;
std::shared_ptr<HeadlessDisplay> display { std::make_shared<mbgl::HeadlessDisplay>() };
HeadlessView view { display, 2 };
StubFileSource fileSource;
ThreadPool threadPool { 4 };
private:
Response response(const std::string& path) {
Response result;
auto it = cache.find(path);
if (it != cache.end()) {
result.data = it->second;
} else {
auto data = std::make_shared<std::string>(
util::read_file("test/fixtures/resources/"s + path));
cache.insert(it, std::make_pair(path, data));
result.data = data;
}
return result;
}
std::string getType(const Resource& res) {
if (res.url.find("satellite") != std::string::npos) {
return "raster";
} else {
return "vector";
}
};
std::unordered_map<std::string, std::shared_ptr<std::string>> cache;
};
TEST(Memory, Vector) {
MemoryTest test;
Map map(test.view, test.fileSource, test.threadPool, MapMode::Still);
map.setZoom(16); // more map features
map.setStyleURL("mapbox://streets");
test::render(map);
}
TEST(Memory, Raster) {
MemoryTest test;
Map map(test.view, test.fileSource, test.threadPool, MapMode::Still);
map.setStyleURL("mapbox://satellite");
test::render(map);
}
// This test will measure the size of a Map object
// after rendering a raster and a vector style. The
// idea is to try to keep the memory footprint within
// reasonable limits, so this test acts more like a
// safeguard.
TEST(Memory, Footprint) {
if (!isUsingJemalloc()) {
return;
}
MemoryTest test;
auto renderMap = [](Map* map, const char* style){
map->setZoom(16);
map->setStyleURL(style);
test::render(*map);
};
// Warm up buffers and cache.
for (unsigned i = 0; i < 10; ++i) {
Map map(test.view, test.fileSource,test.threadPool, MapMode::Still);
renderMap(&map, "mapbox://streets");
renderMap(&map, "mapbox://satellite");
};
// Process close callbacks, mostly needed by
// libuv runloop.
test.runLoop.runOnce();
std::vector<std::unique_ptr<Map>> maps;
unsigned runs = 15;
long vectorInitialRSS = getRSS();
for (unsigned i = 0; i < runs; ++i) {
auto vector = std::make_unique<Map>(test.view, test.fileSource, test.threadPool, MapMode::Still);
renderMap(vector.get(), "mapbox://streets");
maps.push_back(std::move(vector));
};
double vectorFootprint = (getRSS() - vectorInitialRSS) / double(runs);
long rasterInitialRSS = getRSS();
for (unsigned i = 0; i < runs; ++i) {
auto raster = std::make_unique<Map>(test.view, test.fileSource, test.threadPool, MapMode::Still);
renderMap(raster.get(), "mapbox://satellite");
maps.push_back(std::move(raster));
};
double rasterFootprint = (getRSS() - rasterInitialRSS) / double(runs);
ASSERT_LT(vectorFootprint, 65 * 1024 * 1024) << "\
mbgl::Map footprint over 65MB for vector styles.";
ASSERT_LT(rasterFootprint, 25 * 1024 * 1024) << "\
mbgl::Map footprint over 25MB for raster styles.";
}
|
