kakoune/src/shared_string.cc

45 lines
1.1 KiB
C++

#include "shared_string.hh"
#include "buffer_utils.hh"
namespace Kakoune
{
SharedString StringRegistry::intern(StringView str)
{
auto it = m_strings.find({str, SharedString::NoCopy{}});
if (it == m_strings.end())
{
SharedString shared_str = str;
it = m_strings.emplace(shared_str).first;
}
return *it;
}
void StringRegistry::purge_unused()
{
for (auto it = m_strings.begin(); it != m_strings.end(); )
{
if (it->m_storage->refcount == 1)
it = m_strings.erase(it);
else
++it;
}
}
void StringRegistry::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.m_storage->refcount - 1;
total_size += (int)st.m_storage->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));
}
}