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#include <mbgl/test/stub_file_source.hpp>
#include <mbgl/test/getrss.hpp>
#include <mbgl/test/util.hpp>
#include <mbgl/map/map.hpp>
#include <mbgl/renderer/backend_scope.hpp>
#include <mbgl/gl/headless_backend.hpp>
#include <mbgl/gl/offscreen_view.hpp>
#include <mbgl/util/default_thread_pool.hpp>
#include <mbgl/util/io.hpp>
#include <mbgl/util/run_loop.hpp>
#include <mbgl/style/style.hpp>
#include <mbgl/renderer/renderer.hpp>
#include <mbgl/test/stub_renderer_frontend.hpp>
#include <algorithm>
#include <iostream>
#include <iterator>
#include <string>
#include <unordered_map>
#include <utility>
#include <cstdlib>
#include <unistd.h>
using namespace mbgl;
using namespace std::literals::string_literals;
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;
HeadlessBackend backend;
BackendScope scope { backend };
OffscreenView view { backend.getContext(), { 512, 512 } };
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;
float ratio { 2 };
StubRendererFrontend rendererFrontend {
std::make_unique<Renderer>(test.backend, ratio, test.fileSource, test.threadPool),
test.view };
Map map(rendererFrontend, MapObserver::nullObserver(), { 256, 256 }, ratio, test.fileSource,
test.threadPool, MapMode::Still);
map.setZoom(16); // more map features
map.getStyle().loadURL("mapbox://streets");
test::render(map, test.view);
}
TEST(Memory, Raster) {
MemoryTest test;
float ratio { 2 };
StubRendererFrontend rendererFrontend {
std::make_unique<Renderer>(test.backend, ratio, test.fileSource, test.threadPool),
test.view };
Map map(rendererFrontend, MapObserver::nullObserver(), { 256, 256 }, ratio, test.fileSource,
test.threadPool, MapMode::Still);
map.getStyle().loadURL("mapbox://satellite");
test::render(map, test.view);
}
/**
On CI, we only run the memory footprint test in the Qt build, because it uses
jemalloc, which yields more consistent memory usage results. To force it to
run locally, use `DO_MEMORY_FOOTPRINT=1 make run-test-Memory.Footprint.
*/
bool shouldRunFootprint() {
const char* preload = getenv("LD_PRELOAD");
if (preload) {
return std::string(preload).find("libjemalloc.so") != std::string::npos;
} else {
return getenv("DO_MEMORY_FOOTPRINT");
}
}
// 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 (!shouldRunFootprint()) {
return;
}
MemoryTest test;
float ratio { 2 };
auto renderMap = [&](Map& map, const char* style){
map.setZoom(16);
map.getStyle().loadURL(style);
test::render(map, test.view);
};
// Warm up buffers and cache.
for (unsigned i = 0; i < 10; ++i) {
StubRendererFrontend rendererFrontend {
std::make_unique<Renderer>(test.backend, ratio, test.fileSource, test.threadPool),
test.view };
Map map(rendererFrontend, MapObserver::nullObserver(), { 256, 256 }, ratio, 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::pair<std::unique_ptr<Map>, std::unique_ptr<RendererFrontend>>> maps;
unsigned runs = 15;
long vectorInitialRSS = mbgl::test::getCurrentRSS();
for (unsigned i = 0; i < runs; ++i) {
auto frontend = std::make_unique<StubRendererFrontend>(
std::make_unique<Renderer>(test.backend, ratio, test.fileSource, test.threadPool), test.view);
auto vector = std::make_unique<Map>(*frontend, MapObserver::nullObserver(),
Size{ 256, 256 }, ratio, test.fileSource,
test.threadPool, MapMode::Still);
renderMap(*vector, "mapbox://streets");
maps.push_back({std::move(vector), std::move(frontend)});
};
double vectorFootprint = (mbgl::test::getCurrentRSS() - vectorInitialRSS) / double(runs);
long rasterInitialRSS = mbgl::test::getCurrentRSS();
for (unsigned i = 0; i < runs; ++i) {
auto frontend = std::make_unique<StubRendererFrontend>(
std::make_unique<Renderer>(test.backend, ratio, test.fileSource, test.threadPool), test.view);
auto raster = std::make_unique<Map>(*frontend, MapObserver::nullObserver(),
Size{ 256, 256 }, ratio, test.fileSource,
test.threadPool, MapMode::Still);
renderMap(*raster, "mapbox://satellite");
maps.push_back({std::move(raster), std::move(frontend)});
};
double rasterFootprint = (mbgl::test::getCurrentRSS() - rasterInitialRSS) / double(runs);
RecordProperty("vectorFootprint", vectorFootprint);
RecordProperty("rasterFootprint", rasterFootprint);
ASSERT_LT(vectorFootprint, 40 * 1024 * 1024) << "\
mbgl::Map footprint over 65.2MB for vector styles.";
ASSERT_LT(rasterFootprint, 25 * 1024 * 1024) << "\
mbgl::Map footprint over 25MB for raster styles.";
}
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