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Codechange: Replace GroupStatistics' num_engines with std::map. (#11849)

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This removes manual memory management with calloc/free calls, and prevents potentially large arrays being allocated for each group.
This commit is contained in:
Peter Nelson
2024-01-21 14:09:44 +00:00
committed by GitHub
parent c0ab436077
commit 8797cc7ef2
3 changed files with 19 additions and 19 deletions
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29
src/group_cmd.cpp
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@@ -27,16 +27,6 @@
GroupPool _group_pool("Group");
INSTANTIATE_POOL_METHODS(Group)
GroupStatistics::GroupStatistics()
{
this->num_engines = CallocT<uint16_t>(Engine::GetPoolSize());
}
GroupStatistics::~GroupStatistics()
{
free(this->num_engines);
}
/**
* Clear all caches.
*/
@@ -47,9 +37,20 @@ void GroupStatistics::Clear()
this->num_vehicle_min_age = 0;
this->profit_last_year_min_age = 0;
/* This is also called when NewGRF change. So the number of engines might have changed. Reallocate. */
free(this->num_engines);
this->num_engines = CallocT<uint16_t>(Engine::GetPoolSize());
/* This is also called when NewGRF change. So the number of engines might have changed. Reset. */
this->num_engines.clear();
}
/**
* Get number of vehicles of a specific engine ID.
* @param engine Engine ID.
* @returns number of vehicles of this engine ID.
*/
uint16_t GroupStatistics::GetNumEngines(EngineID engine) const
{
auto found = this->num_engines.find(engine);
if (found != std::end(this->num_engines)) return found->second;
return 0;
}
/**
@@ -800,7 +801,7 @@ uint GetGroupNumEngines(CompanyID company, GroupID id_g, EngineID id_e)
for (const Group *g : Group::Iterate()) {
if (g->parent == id_g) count += GetGroupNumEngines(company, g->index, id_e);
}
return count + GroupStatistics::Get(company, id_g, e->type).num_engines[id_e];
return count + GroupStatistics::Get(company, id_g, e->type).GetNumEngines(id_e);
}
/**