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Reduce memory traffic in ConstString in the std::map formatter 

llvm-svn: 254787
This commit is contained in:
Enrico Granata 2015-12-04 22:49:27 +00:00
parent 68b309a306
commit 4c2bf56850
1 changed files with 14 additions and 6 deletions
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20
lldb/source/Plugins/Language/CPlusPlus/LibCxxMap.cpp
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@ -269,14 +269,17 @@ m_iterators()
size_t
lldb_private::formatters::LibcxxStdMapSyntheticFrontEnd::CalculateNumChildren ()
{
static ConstString g___pair3_("__pair3_");
static ConstString g___first_("__first_");
if (m_count != UINT32_MAX)
return m_count;
if (m_tree == NULL)
return 0;
ValueObjectSP m_item(m_tree->GetChildMemberWithName(ConstString("__pair3_"), true));
ValueObjectSP m_item(m_tree->GetChildMemberWithName(g___pair3_, true));
if (!m_item)
return 0;
m_item = m_item->GetChildMemberWithName(ConstString("__first_"), true);
m_item = m_item->GetChildMemberWithName(g___first_, true);
if (!m_item)
return 0;
m_count = m_item->GetValueAsUnsigned(0);
@ -286,6 +289,8 @@ lldb_private::formatters::LibcxxStdMapSyntheticFrontEnd::CalculateNumChildren ()
bool
lldb_private::formatters::LibcxxStdMapSyntheticFrontEnd::GetDataType()
{
static ConstString g___value_("__value_");
if (m_element_type.GetOpaqueQualType() && m_element_type.GetTypeSystem())
return true;
m_element_type.Clear();
@ -294,7 +299,7 @@ lldb_private::formatters::LibcxxStdMapSyntheticFrontEnd::GetDataType()
deref = m_root_node->Dereference(error);
if (!deref || error.Fail())
return false;
deref = deref->GetChildMemberWithName(ConstString("__value_"), true);
deref = deref->GetChildMemberWithName(g___value_, true);
if (!deref)
return false;
m_element_type = deref->GetCompilerType();
@ -320,6 +325,7 @@ lldb_private::formatters::LibcxxStdMapSyntheticFrontEnd::GetChildAtIndex (size_t
{
static ConstString g___cc("__cc");
static ConstString g___nc("__nc");
static ConstString g___value_("__value_");
if (idx >= CalculateNumChildren())
@ -364,7 +370,7 @@ lldb_private::formatters::LibcxxStdMapSyntheticFrontEnd::GetChildAtIndex (size_t
return lldb::ValueObjectSP();
}
GetValueOffset(iterated_sp);
iterated_sp = iterated_sp->GetChildMemberWithName(ConstString("__value_"), true);
iterated_sp = iterated_sp->GetChildMemberWithName(g___value_, true);
if (!iterated_sp)
{
m_tree = NULL;
@ -438,14 +444,16 @@ lldb_private::formatters::LibcxxStdMapSyntheticFrontEnd::GetChildAtIndex (size_t
bool
lldb_private::formatters::LibcxxStdMapSyntheticFrontEnd::Update()
{
static ConstString g___tree_("__tree_");
static ConstString g___begin_node_("__begin_node_");
m_count = UINT32_MAX;
m_tree = m_root_node = NULL;
m_children.clear();
m_iterators.clear();
m_tree = m_backend.GetChildMemberWithName(ConstString("__tree_"), true).get();
m_tree = m_backend.GetChildMemberWithName(g___tree_, true).get();
if (!m_tree)
return false;
m_root_node = m_tree->GetChildMemberWithName(ConstString("__begin_node_"), true).get();
m_root_node = m_tree->GetChildMemberWithName(g___begin_node_, true).get();
return false;
}