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Added a logging helper class for SymbolFileDWARF::ParseType() that will 

enable us to track the depth of parsing and what is being parsed. This
helps when trying to track down difficult type parsing issues and is only
enabled in non-production builds.

llvm-svn: 150203
This commit is contained in:
Greg Clayton 2012-02-09 20:03:49 +00:00
parent aa1a64055b
commit 1fba8711b0
1 changed files with 92 additions and 19 deletions
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111
lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
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@ -109,6 +109,86 @@ DW_ACCESS_to_AccessType (uint32_t dwarf_accessibility)
return eAccessNone;
}
#if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE)
class DIEStack
{
public:
void Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
{
m_dies.push_back (DIEInfo(cu, die));
}
void LogDIEs (Log *log, SymbolFileDWARF *dwarf)
{
StreamString log_strm;
const size_t n = m_dies.size();
log_strm.Printf("DIEStack[%zu]:\n", n);
for (size_t i=0; i<n; i++)
{
DWARFCompileUnit *cu = m_dies[i].cu;
const DWARFDebugInfoEntry *die = m_dies[i].die;
std::string qualified_name;
die->GetQualifiedName(dwarf, cu, qualified_name);
log_strm.Printf ("[%zu] 0x%8.8x: %s name='%s'\n",
i,
die->GetOffset(),
DW_TAG_value_to_name(die->Tag()),
qualified_name.c_str());
}
log->PutCString(log_strm.GetData());
}
void Pop ()
{
m_dies.pop_back();
}
class ScopedPopper
{
public:
ScopedPopper (DIEStack &die_stack) :
m_die_stack (die_stack),
m_valid (false)
{
}
void
Push (DWARFCompileUnit *cu, const DWARFDebugInfoEntry *die)
{
m_valid = true;
m_die_stack.Push (cu, die);
}
~ScopedPopper ()
{
if (m_valid)
m_die_stack.Pop();
}
protected:
DIEStack &m_die_stack;
bool m_valid;
};
protected:
struct DIEInfo {
DIEInfo (DWARFCompileUnit *c, const DWARFDebugInfoEntry *d) :
cu(c),
die(d)
{
}
DWARFCompileUnit *cu;
const DWARFDebugInfoEntry *die;
};
typedef std::vector<DIEInfo> Stack;
Stack m_dies;
};
#endif
void
SymbolFileDWARF::Initialize()
{
@ -4349,15 +4429,11 @@ SymbolFileDWARF::ParseType (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu,
if (type_is_new_ptr)
*type_is_new_ptr = false;
static int depth = -1;
class DepthTaker {
public:
DepthTaker (int &depth) : m_depth(depth) { ++m_depth; }
~DepthTaker () { --m_depth; }
int &m_depth;
} depth_taker(depth);
#if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE)
static DIEStack g_die_stack;
DIEStack::ScopedPopper scoped_die_logger(g_die_stack);
#endif
AccessType accessibility = eAccessNone;
if (die != NULL)
@ -4368,20 +4444,17 @@ SymbolFileDWARF::ParseType (const SymbolContext& sc, DWARFCompileUnit* dwarf_cu,
const DWARFDebugInfoEntry *context_die;
clang::DeclContext *context = GetClangDeclContextContainingDIE (dwarf_cu, die, &context_die);
std::string name_storage;
const char* qual_name = die->GetQualifiedName(this,
dwarf_cu,
name_storage);
GetObjectFile()->GetModule()->LogMessage (log.get(), "SymbolFileDWARF::ParseType (depth = %d, die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s '%s'='%s')",
depth,
GetObjectFile()->GetModule()->LogMessage (log.get(), "SymbolFileDWARF::ParseType (die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s name = '%s')",
die->GetOffset(),
context,
context_die->GetOffset(),
DW_TAG_value_to_name(die->Tag()),
die->GetName(this, dwarf_cu),
qual_name);
die->GetName(this, dwarf_cu));
#if defined(LLDB_CONFIGURATION_DEBUG) or defined(LLDB_CONFIGURATION_RELEASE)
scoped_die_logger.Push (dwarf_cu, die);
g_die_stack.LogDIEs(log.get(), this);
#endif
}
//
// LogSP log (LogChannelDWARF::GetLogIfAll(DWARF_LOG_DEBUG_INFO));