mirror of https://github.com/OpenTTD/OpenTTD.git
Codechange: Replace GroupStatistics' num_engines with std::map. (#11849)
This removes manual memory management with calloc/free calls, and prevents potentially large arrays being allocated for each group.
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@ -24,15 +24,12 @@ extern GroupPool _group_pool; ///< Pool of groups.
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struct GroupStatistics {
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Money profit_last_year; ///< Sum of profits for all vehicles.
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Money profit_last_year_min_age; ///< Sum of profits for vehicles considered for profit statistics.
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uint16_t *num_engines; ///< Caches the number of engines of each type the company owns.
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std::map<EngineID, uint16_t> num_engines; ///< Caches the number of engines of each type the company owns.
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uint16_t num_vehicle; ///< Number of vehicles.
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uint16_t num_vehicle_min_age; ///< Number of vehicles considered for profit statistics;
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bool autoreplace_defined; ///< Are any autoreplace rules set?
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bool autoreplace_finished; ///< Have all autoreplacement finished?
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GroupStatistics();
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~GroupStatistics();
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void Clear();
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void ClearProfits()
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@ -49,6 +46,8 @@ struct GroupStatistics {
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this->autoreplace_finished = false;
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}
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uint16_t GetNumEngines(EngineID engine) const;
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static GroupStatistics &Get(CompanyID company, GroupID id_g, VehicleType type);
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static GroupStatistics &Get(const Vehicle *v);
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static GroupStatistics &GetAllGroup(const Vehicle *v);
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@ -27,16 +27,6 @@
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GroupPool _group_pool("Group");
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INSTANTIATE_POOL_METHODS(Group)
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GroupStatistics::GroupStatistics()
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{
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this->num_engines = CallocT<uint16_t>(Engine::GetPoolSize());
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}
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GroupStatistics::~GroupStatistics()
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{
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free(this->num_engines);
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}
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/**
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* Clear all caches.
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*/
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@ -47,9 +37,20 @@ void GroupStatistics::Clear()
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this->num_vehicle_min_age = 0;
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this->profit_last_year_min_age = 0;
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/* This is also called when NewGRF change. So the number of engines might have changed. Reallocate. */
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free(this->num_engines);
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this->num_engines = CallocT<uint16_t>(Engine::GetPoolSize());
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/* This is also called when NewGRF change. So the number of engines might have changed. Reset. */
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this->num_engines.clear();
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}
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/**
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* Get number of vehicles of a specific engine ID.
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* @param engine Engine ID.
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* @returns number of vehicles of this engine ID.
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*/
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uint16_t GroupStatistics::GetNumEngines(EngineID engine) const
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{
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auto found = this->num_engines.find(engine);
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if (found != std::end(this->num_engines)) return found->second;
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return 0;
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}
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/**
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@ -800,7 +801,7 @@ uint GetGroupNumEngines(CompanyID company, GroupID id_g, EngineID id_e)
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for (const Group *g : Group::Iterate()) {
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if (g->parent == id_g) count += GetGroupNumEngines(company, g->index, id_e);
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}
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return count + GroupStatistics::Get(company, id_g, e->type).num_engines[id_e];
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return count + GroupStatistics::Get(company, id_g, e->type).GetNumEngines(id_e);
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}
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/**
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@ -32,7 +32,7 @@
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/* AIs have only access to engines they can purchase or still have in use.
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* Deity has access to all engined that will be or were available ever. */
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CompanyID company = ScriptObject::GetCompany();
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return ScriptCompanyMode::IsDeity() || ::IsEngineBuildable(engine_id, e->type, company) || ::Company::Get(company)->group_all[e->type].num_engines[engine_id] > 0;
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return ScriptCompanyMode::IsDeity() || ::IsEngineBuildable(engine_id, e->type, company) || ::Company::Get(company)->group_all[e->type].GetNumEngines(engine_id) > 0;
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}
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/* static */ bool ScriptEngine::IsBuildable(EngineID engine_id)
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