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Reduce memory consumption from attribute accumulation (#290)

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* Progress on plumbing a string pool for full_keys through

* More plumbing for key_pool

* Don't keep features with identical locations as multiplier features

* Revert "Don't keep features with identical locations as multiplier features"

This reverts commit 413f0c8024.

* Adjust calculated maxzoom to account for duplicate feature locations

* Update changelog and version

* Add a test affected by the maxzoom change with duplicate locations

* Round the drop rate a little for cross-platform test consistency
This commit is contained in:
Erica Fischer
2024-11-05 14:39:41 -08:00
committed by GitHub
parent b3b89e1e07
commit 23667bb8eb
21 changed files with 1230 additions and 285 deletions
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geojson.cpp
+5 -4
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@@ -182,17 +182,18 @@ int serialize_geojson_feature(struct serialization_state *sst, json_object *geom
nprop = properties->value.object.length;
}
std::vector<std::string> keys;
std::vector<std::shared_ptr<std::string>> full_keys;
std::vector<serial_val> values;
keys.reserve(nprop);
full_keys.reserve(nprop);
values.reserve(nprop);
key_pool key_pool;
for (size_t i = 0; i < nprop; i++) {
if (properties->value.object.keys[i]->type == JSON_STRING) {
serial_val sv = stringify_value(properties->value.object.values[i], sst->fname, sst->line, feature);
keys.emplace_back(properties->value.object.keys[i]->value.string.string);
full_keys.emplace_back(key_pool.pool(properties->value.object.keys[i]->value.string.string));
values.push_back(std::move(sv));
}
}
@@ -211,7 +212,7 @@ int serialize_geojson_feature(struct serialization_state *sst, json_object *geom
sf.geometry = dv;
sf.feature_minzoom = 0; // Will be filled in during index merging
sf.seq = *(sst->layer_seq);
sf.full_keys = std::move(keys);
sf.full_keys = std::move(full_keys);
sf.full_values = std::move(values);
return serialize_feature(sst, sf, tippecanoe_layername);