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-rw-r--r--source/Core/Mangled.cpp186
1 files changed, 135 insertions, 51 deletions
diff --git a/source/Core/Mangled.cpp b/source/Core/Mangled.cpp
index 545ac51c870f..943df008edad 100644
--- a/source/Core/Mangled.cpp
+++ b/source/Core/Mangled.cpp
@@ -16,6 +16,7 @@
#pragma comment(lib, "dbghelp.lib")
#endif
+#include "lldb/Core/RichManglingContext.h"
#include "lldb/Utility/ConstString.h"
#include "lldb/Utility/Log.h"
#include "lldb/Utility/Logging.h"
@@ -195,7 +196,7 @@ void Mangled::Clear() {
int Mangled::Compare(const Mangled &a, const Mangled &b) {
return ConstString::Compare(
a.GetName(lldb::eLanguageTypeUnknown, ePreferMangled),
- a.GetName(lldb::eLanguageTypeUnknown, ePreferMangled));
+ b.GetName(lldb::eLanguageTypeUnknown, ePreferMangled));
}
//----------------------------------------------------------------------
@@ -233,6 +234,130 @@ void Mangled::SetValue(const ConstString &name) {
}
//----------------------------------------------------------------------
+// Local helpers for different demangling implementations.
+//----------------------------------------------------------------------
+static char *GetMSVCDemangledStr(const char *M) {
+#if defined(_MSC_VER)
+ const size_t demangled_length = 2048;
+ char *demangled_cstr = static_cast<char *>(::malloc(demangled_length));
+ ::ZeroMemory(demangled_cstr, demangled_length);
+ DWORD result = safeUndecorateName(M, demangled_cstr, demangled_length);
+
+ if (Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_DEMANGLE)) {
+ if (demangled_cstr && demangled_cstr[0])
+ log->Printf("demangled msvc: %s -> \"%s\"", M, demangled_cstr);
+ else
+ log->Printf("demangled msvc: %s -> error: 0x%lu", M, result);
+ }
+
+ if (result != 0) {
+ return demangled_cstr;
+ } else {
+ ::free(demangled_cstr);
+ return nullptr;
+ }
+#else
+ return nullptr;
+#endif
+}
+
+static char *GetItaniumDemangledStr(const char *M) {
+ char *demangled_cstr = nullptr;
+
+ llvm::ItaniumPartialDemangler ipd;
+ bool err = ipd.partialDemangle(M);
+ if (!err) {
+ // Default buffer and size (will realloc in case it's too small).
+ size_t demangled_size = 80;
+ demangled_cstr = static_cast<char *>(std::malloc(demangled_size));
+ demangled_cstr = ipd.finishDemangle(demangled_cstr, &demangled_size);
+
+ assert(demangled_cstr &&
+ "finishDemangle must always succeed if partialDemangle did");
+ assert(demangled_cstr[demangled_size - 1] == '\0' &&
+ "Expected demangled_size to return length including trailing null");
+ }
+
+ if (Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_DEMANGLE)) {
+ if (demangled_cstr)
+ log->Printf("demangled itanium: %s -> \"%s\"", M, demangled_cstr);
+ else
+ log->Printf("demangled itanium: %s -> error: failed to demangle", M);
+ }
+
+ return demangled_cstr;
+}
+
+//----------------------------------------------------------------------
+// Explicit demangling for scheduled requests during batch processing. This
+// makes use of ItaniumPartialDemangler's rich demangle info
+//----------------------------------------------------------------------
+bool Mangled::DemangleWithRichManglingInfo(
+ RichManglingContext &context, SkipMangledNameFn *skip_mangled_name) {
+ // We need to generate and cache the demangled name.
+ static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
+ Timer scoped_timer(func_cat,
+ "Mangled::DemangleWithRichNameIndexInfo (m_mangled = %s)",
+ m_mangled.GetCString());
+
+ // Others are not meant to arrive here. ObjC names or C's main() for example
+ // have their names stored in m_demangled, while m_mangled is empty.
+ assert(m_mangled);
+
+ // Check whether or not we are interested in this name at all.
+ ManglingScheme scheme = cstring_mangling_scheme(m_mangled.GetCString());
+ if (skip_mangled_name && skip_mangled_name(m_mangled.GetStringRef(), scheme))
+ return false;
+
+ switch (scheme) {
+ case eManglingSchemeNone:
+ // The current mangled_name_filter would allow llvm_unreachable here.
+ return false;
+
+ case eManglingSchemeItanium:
+ // We want the rich mangling info here, so we don't care whether or not
+ // there is a demangled string in the pool already.
+ if (context.FromItaniumName(m_mangled)) {
+ // If we got an info, we have a name. Copy to string pool and connect the
+ // counterparts to accelerate later access in GetDemangledName().
+ context.ParseFullName();
+ m_demangled.SetStringWithMangledCounterpart(context.GetBufferRef(),
+ m_mangled);
+ return true;
+ } else {
+ m_demangled.SetCString("");
+ return false;
+ }
+
+ case eManglingSchemeMSVC: {
+ // We have no rich mangling for MSVC-mangled names yet, so first try to
+ // demangle it if necessary.
+ if (!m_demangled && !m_mangled.GetMangledCounterpart(m_demangled)) {
+ if (char *d = GetMSVCDemangledStr(m_mangled.GetCString())) {
+ // If we got an info, we have a name. Copy to string pool and connect
+ // the counterparts to accelerate later access in GetDemangledName().
+ m_demangled.SetStringWithMangledCounterpart(llvm::StringRef(d),
+ m_mangled);
+ ::free(d);
+ } else {
+ m_demangled.SetCString("");
+ }
+ }
+
+ if (m_demangled.IsEmpty()) {
+ // Cannot demangle it, so don't try parsing.
+ return false;
+ } else {
+ // Demangled successfully, we can try and parse it with
+ // CPlusPlusLanguage::MethodName.
+ return context.FromCxxMethodName(m_demangled);
+ }
+ }
+ }
+ llvm_unreachable("Fully covered switch above!");
+}
+
+//----------------------------------------------------------------------
// Generate the demangled name on demand using this accessor. Code in this
// class will need to use this accessor if it wishes to decode the demangled
// name. The result is cached and will be kept until a new string value is
@@ -242,14 +367,12 @@ const ConstString &
Mangled::GetDemangledName(lldb::LanguageType language) const {
// Check to make sure we have a valid mangled name and that we haven't
// already decoded our mangled name.
- if (m_mangled && !m_demangled) {
+ if (m_mangled && m_demangled.IsNull()) {
// We need to generate and cache the demangled name.
static Timer::Category func_cat(LLVM_PRETTY_FUNCTION);
Timer scoped_timer(func_cat, "Mangled::GetDemangledName (m_mangled = %s)",
m_mangled.GetCString());
- Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_DEMANGLE);
-
// Don't bother running anything that isn't mangled
const char *mangled_name = m_mangled.GetCString();
ManglingScheme mangling_scheme{cstring_mangling_scheme(mangled_name)};
@@ -259,60 +382,23 @@ Mangled::GetDemangledName(lldb::LanguageType language) const {
// add it to our map.
char *demangled_name = nullptr;
switch (mangling_scheme) {
- case eManglingSchemeMSVC: {
-#if defined(_MSC_VER)
- if (log)
- log->Printf("demangle msvc: %s", mangled_name);
- const size_t demangled_length = 2048;
- demangled_name = static_cast<char *>(::malloc(demangled_length));
- ::ZeroMemory(demangled_name, demangled_length);
- DWORD result =
- safeUndecorateName(mangled_name, demangled_name, demangled_length);
- if (log) {
- if (demangled_name && demangled_name[0])
- log->Printf("demangled msvc: %s -> \"%s\"", mangled_name,
- demangled_name);
- else
- log->Printf("demangled msvc: %s -> error: 0x%lu", mangled_name,
- result);
- }
-
- if (result == 0) {
- free(demangled_name);
- demangled_name = nullptr;
- }
-#endif
+ case eManglingSchemeMSVC:
+ demangled_name = GetMSVCDemangledStr(mangled_name);
break;
- }
case eManglingSchemeItanium: {
- llvm::ItaniumPartialDemangler IPD;
- bool demangle_err = IPD.partialDemangle(mangled_name);
- if (!demangle_err) {
- // Default buffer and size (realloc is used in case it's too small).
- size_t demangled_size = 80;
- demangled_name = static_cast<char *>(::malloc(demangled_size));
- demangled_name = IPD.finishDemangle(demangled_name, &demangled_size);
- }
-
- if (log) {
- if (demangled_name)
- log->Printf("demangled itanium: %s -> \"%s\"", mangled_name,
- demangled_name);
- else
- log->Printf("demangled itanium: %s -> error: failed to demangle",
- mangled_name);
- }
+ demangled_name = GetItaniumDemangledStr(mangled_name);
break;
}
case eManglingSchemeNone:
- break;
+ llvm_unreachable("eManglingSchemeNone was handled already");
}
if (demangled_name) {
- m_demangled.SetCStringWithMangledCounterpart(demangled_name, m_mangled);
+ m_demangled.SetStringWithMangledCounterpart(
+ llvm::StringRef(demangled_name), m_mangled);
free(demangled_name);
}
}
- if (!m_demangled) {
+ if (m_demangled.IsNull()) {
// Set the demangled string to the empty string to indicate we tried to
// parse it once and failed.
m_demangled.SetCString("");
@@ -333,9 +419,7 @@ bool Mangled::NameMatches(const RegularExpression &regex,
return true;
ConstString demangled = GetDemangledName(language);
- if (demangled && regex.Execute(demangled.AsCString()))
- return true;
- return false;
+ return demangled && regex.Execute(demangled.AsCString());
}
//----------------------------------------------------------------------
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-10 23:31:22 +0000