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refactor(furvm): use generational indexes for thing

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Refs: #10
This commit is contained in:
Aleksander Krajewski
2026-06-10 15:31:23 +02:00
parent d86f38d166
commit 26d77bdc02
3 changed files with 23 additions and 10 deletions
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furvm/src/thing.cpp
+14 -5
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@@ -21,12 +21,13 @@ thing::thing(rzecz, thing_handle id, thing_t type, const context_p& context)
: m_id(id), m_type(type), m_context(context) {
std::size_t size = thing_type_size(type);
std::byte* data = nullptr;
if (!m_context->m_deadThings.empty()) {
if (!m_context->m_deadThingData.empty()) {
thing_t itType{};
for (auto it = m_context->m_deadThings.rbegin(); it != m_context->m_deadThings.rend(); ++it) {
for (auto it = m_context->m_deadThingData.rbegin(); it != m_context->m_deadThingData.rend(); ++it) {
std::memcpy(&itType, static_cast<std::byte*>(*it) - sizeof(itType), sizeof(itType));
if (size == thing_type_size(itType)) {
data = static_cast<std::byte*>(*it);
m_context->m_deadThingData.erase(std::next(it).base());
break;
}
}
@@ -40,12 +41,20 @@ thing::thing(rzecz, thing_handle id, thing_t type, const context_p& context)
}
thing::~thing() {
m_context->m_deadThings.push_back(m_data);
m_context->m_deadThingData.push_back(m_data);
}
thing_p thing::create(const context_p& context, thing_t type) {
auto th = std::make_shared<thing>(rzecz{}, context->m_things.size(), type, context);
context->m_things.push_back(th);
thing_handle id = context->m_things.size();
if (!context->m_deadThings.empty()) {
id = context->m_deadThings.front();
context->m_deadThings.pop();
id += 1 << GENERATION_SIZE;
}
thing_handle idx = id & ((1ULL << ((sizeof(id) * 8) - GENERATION_SIZE)) - 1);
auto th = std::make_shared<thing>(rzecz{}, id, type, context);
context->m_things.emplace(context->m_things.begin() + idx, th);
return std::move(th);
}