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#include <mbgl/util/worker.hpp>
#include <mbgl/util/work_task.hpp>
#include <mbgl/util/work_request.hpp>
#include <mbgl/platform/platform.hpp>
#include <mbgl/renderer/raster_bucket.hpp>
#include <mbgl/tile/geometry_tile_data.hpp>
#include <mbgl/style/layer.hpp>
#include <mbgl/text/collision_tile.hpp>
#include <cassert>
#include <future>
namespace mbgl {
class Worker::Impl {
public:
Impl() = default;
void parseRasterTile(std::unique_ptr<RasterBucket> bucket,
std::shared_ptr<const std::string> data,
std::function<void(RasterTileParseResult)> callback) {
try {
bucket->setImage(decodeImage(*data));
// Destruct the shared pointer before calling the callback.
data.reset();
callback(RasterTileParseResult(std::move(bucket)));
} catch (...) {
callback(std::current_exception());
}
}
void parseGeometryTile(TileWorker* worker,
std::vector<std::unique_ptr<style::Layer>> layers,
std::unique_ptr<const GeometryTileData> tileData,
PlacementConfig config,
std::function<void(TileParseResult)> callback) {
try {
callback(worker->parseAllLayers(std::move(layers), std::move(tileData), config));
} catch (...) {
callback(std::current_exception());
}
}
void parsePendingGeometryTileLayers(TileWorker* worker,
PlacementConfig config,
std::function<void(TileParseResult)> callback) {
try {
callback(worker->parsePendingLayers(config));
} catch (...) {
callback(std::current_exception());
}
}
void redoLayout(TileWorker* worker,
std::vector<std::unique_ptr<style::Layer>> layers,
PlacementConfig config,
std::function<void(TileParseResult)> callback) {
try {
callback(worker->redoLayout(std::move(layers), config));
} catch (...) {
callback(std::current_exception());
}
}
void redoPlacement(TileWorker* worker,
const std::unordered_map<std::string, std::unique_ptr<Bucket>>* buckets,
PlacementConfig config,
std::function<void(std::unique_ptr<CollisionTile>)> callback) {
callback(worker->redoPlacement(buckets, config));
}
};
Worker::Worker(std::size_t count) {
util::ThreadContext context = { "Worker", util::ThreadPriority::Low };
for (std::size_t i = 0; i < count; i++) {
threads.emplace_back(std::make_unique<util::Thread<Impl>>(context));
}
}
Worker::~Worker() = default;
std::unique_ptr<AsyncRequest>
Worker::parseRasterTile(std::unique_ptr<RasterBucket> bucket,
const std::shared_ptr<const std::string> data,
std::function<void(RasterTileParseResult)> callback) {
current = (current + 1) % threads.size();
return threads[current]->invokeWithCallback(&Worker::Impl::parseRasterTile, callback, bucket,
data);
}
std::unique_ptr<AsyncRequest>
Worker::parseGeometryTile(TileWorker& worker,
std::vector<std::unique_ptr<style::Layer>> layers,
std::unique_ptr<const GeometryTileData> tileData,
PlacementConfig config,
std::function<void(TileParseResult)> callback) {
current = (current + 1) % threads.size();
return threads[current]->invokeWithCallback(&Worker::Impl::parseGeometryTile, callback, &worker,
std::move(layers), std::move(tileData), config);
}
std::unique_ptr<AsyncRequest>
Worker::parsePendingGeometryTileLayers(TileWorker& worker,
PlacementConfig config,
std::function<void(TileParseResult)> callback) {
current = (current + 1) % threads.size();
return threads[current]->invokeWithCallback(&Worker::Impl::parsePendingGeometryTileLayers,
callback, &worker, config);
}
std::unique_ptr<AsyncRequest>
Worker::redoLayout(TileWorker& worker,
std::vector<std::unique_ptr<style::Layer>> layers,
PlacementConfig config,
std::function<void(TileParseResult)> callback) {
current = (current + 1) % threads.size();
return threads[current]->invokeWithCallback(&Worker::Impl::redoLayout, callback, &worker,
std::move(layers), config);
}
std::unique_ptr<AsyncRequest>
Worker::redoPlacement(TileWorker& worker,
const std::unordered_map<std::string, std::unique_ptr<Bucket>>& buckets,
PlacementConfig config,
std::function<void(std::unique_ptr<CollisionTile>)> callback) {
current = (current + 1) % threads.size();
return threads[current]->invokeWithCallback(&Worker::Impl::redoPlacement, callback, &worker,
&buckets, config);
}
} // end namespace mbgl
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