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#include "shared_string.hh"
#include "buffer_utils.hh"
namespace Kakoune
{
StringDataPtr StringData::create(ArrayView<const StringView> strs)
{
const int len = std::accumulate(strs.begin(), strs.end(), 0,
[](int l, StringView s)
{ return l + (int)s.length(); });
void* ptr = StringData::operator new(sizeof(StringData) + len + 1);
auto* res = new (ptr) StringData(len);
auto* data = reinterpret_cast<char*>(res + 1);
for (auto& str : strs)
{
memcpy(data, str.begin(), (size_t)str.length());
data += (int)str.length();
}
*data = 0;
return RefPtr<StringData, PtrPolicy>{res};
}
StringDataPtr StringData::Registry::intern(StringView str)
{
auto it = m_strings.find(str);
if (it != m_strings.end())
return StringDataPtr{it->second};
auto data = StringData::create(str);
data->refcount |= interned_flag;
m_strings.emplace(data->strview(), data.get());
return data;
}
void StringData::Registry::remove(StringView str)
{
auto it = m_strings.find(str);
kak_assert(it != m_strings.end());
m_strings.erase(it);
}
void StringData::Registry::debug_stats() const
{
write_to_debug_buffer("Shared Strings stats:");
size_t total_refcount = 0;
size_t total_size = 0;
size_t count = m_strings.size();
for (auto& st : m_strings)
{
total_refcount += st.second->refcount - 1;
total_size += (int)st.second->length;
}
write_to_debug_buffer(format(" data size: {}, mean: {}", total_size, (float)total_size/count));
write_to_debug_buffer(format(" refcounts: {}, mean: {}", total_refcount, (float)total_refcount/count));
}
}
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