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//===-- FormatCache.cpp ---------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/DataFormatters/FormatCache.h"
using namespace lldb;
using namespace lldb_private;
FormatCache::Entry::Entry()
: m_format_cached(false), m_summary_cached(false),
m_synthetic_cached(false) {}
bool FormatCache::Entry::IsFormatCached() { return m_format_cached; }
bool FormatCache::Entry::IsSummaryCached() { return m_summary_cached; }
bool FormatCache::Entry::IsSyntheticCached() { return m_synthetic_cached; }
void FormatCache::Entry::Get(lldb::TypeFormatImplSP &retval) {
retval = m_format_sp;
}
void FormatCache::Entry::Get(lldb::TypeSummaryImplSP &retval) {
retval = m_summary_sp;
}
void FormatCache::Entry::Get(lldb::SyntheticChildrenSP &retval) {
retval = m_synthetic_sp;
}
void FormatCache::Entry::Set(lldb::TypeFormatImplSP format_sp) {
m_format_cached = true;
m_format_sp = format_sp;
}
void FormatCache::Entry::Set(lldb::TypeSummaryImplSP summary_sp) {
m_summary_cached = true;
m_summary_sp = summary_sp;
}
void FormatCache::Entry::Set(lldb::SyntheticChildrenSP synthetic_sp) {
m_synthetic_cached = true;
m_synthetic_sp = synthetic_sp;
}
FormatCache::Entry &FormatCache::GetEntry(ConstString type) {
auto i = m_map.find(type), e = m_map.end();
if (i != e)
return i->second;
m_map[type] = FormatCache::Entry();
return m_map[type];
}
namespace lldb_private {
template<> bool FormatCache::Entry::IsCached<lldb::TypeFormatImplSP>() {
return IsFormatCached();
}
template<> bool FormatCache::Entry::IsCached<lldb::TypeSummaryImplSP> () {
return IsSummaryCached();
}
template<> bool FormatCache::Entry::IsCached<lldb::SyntheticChildrenSP>() {
return IsSyntheticCached();
}
} // namespace lldb_private
template <typename ImplSP>
bool FormatCache::Get(ConstString type, ImplSP &format_impl_sp) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
auto entry = GetEntry(type);
if (entry.IsCached<ImplSP>()) {
m_cache_hits++;
entry.Get(format_impl_sp);
return true;
}
m_cache_misses++;
format_impl_sp.reset();
return false;
}
/// Explicit instantiations for the three types.
/// \{
template bool
FormatCache::Get<lldb::TypeFormatImplSP>(ConstString, lldb::TypeFormatImplSP &);
template bool
FormatCache::Get<lldb::TypeSummaryImplSP>(ConstString,
lldb::TypeSummaryImplSP &);
template bool
FormatCache::Get<lldb::SyntheticChildrenSP>(ConstString,
lldb::SyntheticChildrenSP &);
/// \}
void FormatCache::Set(ConstString type, lldb::TypeFormatImplSP &format_sp) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
GetEntry(type).Set(format_sp);
}
void FormatCache::Set(ConstString type, lldb::TypeSummaryImplSP &summary_sp) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
GetEntry(type).Set(summary_sp);
}
void FormatCache::Set(ConstString type,
lldb::SyntheticChildrenSP &synthetic_sp) {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
GetEntry(type).Set(synthetic_sp);
}
void FormatCache::Clear() {
std::lock_guard<std::recursive_mutex> guard(m_mutex);
m_map.clear();
}
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