JDevlieghere updated this revision to Diff 415283.
JDevlieghere added a comment.
Address code review:
- Decentralize tracking whether a warning/error has been emitted.
- Support diagnostics that are not tied to a single debugger.
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D121511/new/
https://reviews.llvm.org/D121511
Files:
lldb/include/lldb/Core/Debugger.h
lldb/include/lldb/Core/DebuggerEvents.h
lldb/source/Core/Debugger.cpp
lldb/source/Core/DebuggerEvents.cpp
lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.cpp
lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.h
Index: lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.h
===================================================================
--- lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.h
+++ lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.h
@@ -433,7 +433,8 @@
std::unique_ptr<NonPointerISACache> m_non_pointer_isa_cache_up;
std::unique_ptr<TaggedPointerVendor> m_tagged_pointer_vendor_up;
EncodingToTypeSP m_encoding_to_type_sp;
- bool m_noclasses_warning_emitted;
+ std::once_flag m_no_classes_cached_warning;
+ std::once_flag m_no_expanded_cache_warning;
llvm::Optional<std::pair<lldb::addr_t, lldb::addr_t>> m_CFBoolean_values;
uint64_t m_realized_class_generation_count;
};
Index: lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.cpp
===================================================================
--- lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.cpp
+++ lldb/source/Plugins/LanguageRuntime/ObjC/AppleObjCRuntime/AppleObjCRuntimeV2.cpp
@@ -21,6 +21,7 @@
#include "Plugins/TypeSystem/Clang/TypeSystemClang.h"
#include "lldb/Core/Debugger.h"
+#include "lldb/Core/DebuggerEvents.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/Section.h"
@@ -665,8 +666,8 @@
m_loaded_objc_opt(false), m_non_pointer_isa_cache_up(),
m_tagged_pointer_vendor_up(
TaggedPointerVendorV2::CreateInstance(*this, objc_module_sp)),
- m_encoding_to_type_sp(), m_noclasses_warning_emitted(false),
- m_CFBoolean_values(), m_realized_class_generation_count(0) {
+ m_encoding_to_type_sp(), m_CFBoolean_values(),
+ m_realized_class_generation_count(0) {
static const ConstString g_gdb_object_getClass("gdb_object_getClass");
m_has_object_getClass = HasSymbol(g_gdb_object_getClass);
static const ConstString g_objc_copyRealizedClassList(
@@ -2330,32 +2331,27 @@
void AppleObjCRuntimeV2::WarnIfNoClassesCached(
SharedCacheWarningReason reason) {
- if (m_noclasses_warning_emitted)
- return;
-
if (GetProcess() && !DoesProcessHaveSharedCache(*GetProcess())) {
// Simulators do not have the objc_opt_ro class table so don't actually
// complain to the user
- m_noclasses_warning_emitted = true;
return;
}
Debugger &debugger(GetProcess()->GetTarget().GetDebugger());
- if (auto stream = debugger.GetAsyncOutputStream()) {
- switch (reason) {
- case SharedCacheWarningReason::eNotEnoughClassesRead:
- stream->PutCString("warning: could not find Objective-C class data in "
- "the process. This may reduce the quality of type "
- "information available.\n");
- m_noclasses_warning_emitted = true;
- break;
- case SharedCacheWarningReason::eExpressionExecutionFailure:
- stream->PutCString("warning: could not execute support code to read "
- "Objective-C class data in the process. This may "
- "reduce the quality of type information available.\n");
- m_noclasses_warning_emitted = true;
- break;
- }
+ switch (reason) {
+ case SharedCacheWarningReason::eNotEnoughClassesRead:
+ Debugger::ReportWarning("warning: could not find Objective-C class data in "
+ "the process. This may reduce the quality of type "
+ "information available.\n",
+ debugger.GetID(), &m_no_classes_cached_warning);
+ break;
+ case SharedCacheWarningReason::eExpressionExecutionFailure:
+ Debugger::ReportWarning(
+ "warning: could not execute support code to read "
+ "Objective-C class data in the process. This may "
+ "reduce the quality of type information available.\n",
+ debugger.GetID(), &m_no_classes_cached_warning);
+ break;
}
}
@@ -2372,17 +2368,25 @@
Target &target = GetProcess()->GetTarget();
Debugger &debugger = target.GetDebugger();
- if (auto stream = debugger.GetAsyncOutputStream()) {
- const char *msg = "read from the shared cache";
- if (PlatformSP platform_sp = target.GetPlatform())
- msg = platform_sp->IsHost()
- ? "read from the host's in-memory shared cache"
- : "find the on-disk shared cache for this device";
- stream->Printf("warning: libobjc.A.dylib is being read from process "
- "memory. This indicates that LLDB could not %s. This will "
- "likely reduce debugging performance.\n",
- msg);
+
+ std::string buffer;
+ llvm::raw_string_ostream os(buffer);
+
+ os << "warning: libobjc.A.dylib is being read from process memory. This "
+ "indicates that LLDB could not ";
+ if (PlatformSP platform_sp = target.GetPlatform()) {
+ if (platform_sp->IsHost()) {
+ os << "read from the host's in-memory shared cache";
+ } else {
+ os << "find the on-disk shared cache for this device";
+ }
+ } else {
+ os << "read from the shared cache";
}
+ os << ". This will likely reduce debugging performance.\n";
+
+ Debugger::ReportWarning(os.str(), debugger.GetID(),
+ &m_no_expanded_cache_warning);
}
DeclVendor *AppleObjCRuntimeV2::GetDeclVendor() {
Index: lldb/source/Core/DebuggerEvents.cpp
===================================================================
--- lldb/source/Core/DebuggerEvents.cpp
+++ lldb/source/Core/DebuggerEvents.cpp
@@ -10,6 +10,15 @@
using namespace lldb_private;
+template <typename T>
+static const T *GetEventDataFromEventImpl(const Event *event_ptr) {
+ if (event_ptr)
+ if (const EventData *event_data = event_ptr->GetData())
+ if (event_data->GetFlavor() == T::GetFlavorString())
+ return static_cast<const T *>(event_ptr->GetData());
+ return nullptr;
+}
+
ConstString ProgressEventData::GetFlavorString() {
static ConstString g_flavor("ProgressEventData");
return g_flavor;
@@ -33,9 +42,33 @@
const ProgressEventData *
ProgressEventData::GetEventDataFromEvent(const Event *event_ptr) {
- if (event_ptr)
- if (const EventData *event_data = event_ptr->GetData())
- if (event_data->GetFlavor() == ProgressEventData::GetFlavorString())
- return static_cast<const ProgressEventData *>(event_ptr->GetData());
- return nullptr;
+ return GetEventDataFromEventImpl<ProgressEventData>(event_ptr);
+}
+
+ConstString WarningEventData::GetFlavorString() {
+ static ConstString g_flavor("WarningEventData");
+ return g_flavor;
+}
+
+ConstString WarningEventData::GetFlavor() const {
+ return WarningEventData::GetFlavorString();
+}
+
+const WarningEventData *
+WarningEventData::GetEventDataFromEvent(const Event *event_ptr) {
+ return GetEventDataFromEventImpl<WarningEventData>(event_ptr);
+}
+
+ConstString ErrorEventData::GetFlavorString() {
+ static ConstString g_flavor("ErrorEventData");
+ return g_flavor;
+}
+
+ConstString ErrorEventData::GetFlavor() const {
+ return ErrorEventData::GetFlavorString();
+}
+
+const ErrorEventData *
+ErrorEventData::GetEventDataFromEvent(const Event *event_ptr) {
+ return GetEventDataFromEventImpl<ErrorEventData>(event_ptr);
}
Index: lldb/source/Core/Debugger.cpp
===================================================================
--- lldb/source/Core/Debugger.cpp
+++ lldb/source/Core/Debugger.cpp
@@ -1326,6 +1326,63 @@
}
}
+template <typename T>
+static void PrivateReportDiagnostic(Debugger &debugger, uint32_t event_type,
+ std::string message,
+ bool debugger_specific) {
+ Broadcaster &broadcaster = debugger.GetBroadcaster();
+ if (!broadcaster.EventTypeHasListeners(event_type))
+ return;
+ EventSP event_sp = std::make_shared<Event>(
+ event_type, new T(std::move(message), debugger_specific));
+ broadcaster.BroadcastEvent(event_sp);
+}
+
+template <typename T>
+void Debugger::ReportDiagnosticImpl(uint32_t event_type, std::string message,
+ llvm::Optional<lldb::user_id_t> debugger_id,
+ std::once_flag *once) {
+ auto ReportDiagnosticLambda = [&]() {
+ // Check if this progress is for a specific debugger.
+ if (debugger_id) {
+ // It is debugger specific, grab it and deliver the event if the debugger
+ // still exists.
+ DebuggerSP debugger_sp = FindDebuggerWithID(*debugger_id);
+ if (debugger_sp)
+ PrivateReportDiagnostic<T>(*debugger_sp, event_type, std::move(message),
+ true);
+ return;
+ }
+ // The progress event is not debugger specific, iterate over all debuggers
+ // and deliver a progress event to each one.
+ if (g_debugger_list_ptr && g_debugger_list_mutex_ptr) {
+ std::lock_guard<std::recursive_mutex> guard(*g_debugger_list_mutex_ptr);
+ for (const auto &debugger : *g_debugger_list_ptr)
+ PrivateReportDiagnostic<T>(*debugger, event_type, message, false);
+ }
+ };
+
+ if (once)
+ std::call_once(*once, ReportDiagnosticLambda);
+ else
+ ReportDiagnosticLambda();
+}
+
+void Debugger::ReportWarning(std::string message,
+ llvm::Optional<lldb::user_id_t> debugger_id,
+ std::once_flag *once) {
+ ReportDiagnosticImpl<WarningEventData>(Debugger::eBroadcastBitWarning,
+ std::move(message), debugger_id, once);
+}
+
+void Debugger::ReportError(std::string message,
+ llvm::Optional<lldb::user_id_t> debugger_id,
+ std::once_flag *once) {
+
+ ReportDiagnosticImpl<ErrorEventData>(Debugger::eBroadcastBitError,
+ std::move(message), debugger_id, once);
+}
+
bool Debugger::EnableLog(llvm::StringRef channel,
llvm::ArrayRef<const char *> categories,
llvm::StringRef log_file, uint32_t log_options,
@@ -1607,6 +1664,10 @@
listener_sp->StartListeningForEvents(&m_broadcaster,
Debugger::eBroadcastBitProgress);
+ listener_sp->StartListeningForEvents(&m_broadcaster,
+ Debugger::eBroadcastBitWarning);
+ listener_sp->StartListeningForEvents(&m_broadcaster,
+ Debugger::eBroadcastBitError);
// Let the thread that spawned us know that we have started up and that we
// are now listening to all required events so no events get missed
@@ -1660,6 +1721,10 @@
} else if (broadcaster == &m_broadcaster) {
if (event_type & Debugger::eBroadcastBitProgress)
HandleProgressEvent(event_sp);
+ else if (event_type & Debugger::eBroadcastBitWarning)
+ HandleWarningEvent(event_sp);
+ else if (event_type & Debugger::eBroadcastBitError)
+ HandleErrorEvent(event_sp);
}
}
@@ -1793,6 +1858,24 @@
output->Flush();
}
+void Debugger::HandleWarningEvent(const lldb::EventSP &event_sp) {
+ auto *data = WarningEventData::GetEventDataFromEvent(event_sp.get());
+ if (!data)
+ return;
+
+ Stream &stream = *GetAsyncErrorStream();
+ stream << "warning: " << data->GetMessage() << '\n';
+}
+
+void Debugger::HandleErrorEvent(const lldb::EventSP &event_sp) {
+ auto *data = ErrorEventData::GetEventDataFromEvent(event_sp.get());
+ if (!data)
+ return;
+
+ Stream &stream = *GetAsyncErrorStream();
+ stream << "error: " << data->GetMessage() << '\n';
+}
+
bool Debugger::HasIOHandlerThread() { return m_io_handler_thread.IsJoinable(); }
bool Debugger::StartIOHandlerThread() {
Index: lldb/include/lldb/Core/DebuggerEvents.h
===================================================================
--- lldb/include/lldb/Core/DebuggerEvents.h
+++ lldb/include/lldb/Core/DebuggerEvents.h
@@ -46,6 +46,54 @@
ProgressEventData(const ProgressEventData &) = delete;
const ProgressEventData &operator=(const ProgressEventData &) = delete;
};
+
+class DiagnosticEventData : public EventData {
+public:
+ enum class Type {
+ Warning,
+ Error,
+ };
+ DiagnosticEventData(Type type, std::string message, bool debugger_specific)
+ : m_message(std::move(message)), m_type(type),
+ m_debugger_specific(debugger_specific) {}
+ ~DiagnosticEventData() {}
+
+ const std::string &GetMessage() const { return m_message; }
+ Type GetType() const { return m_type; }
+
+protected:
+ std::string m_message;
+ Type m_type;
+ const bool m_debugger_specific;
+
+ DiagnosticEventData(const DiagnosticEventData &) = delete;
+ const DiagnosticEventData &operator=(const DiagnosticEventData &) = delete;
+};
+
+class WarningEventData : public DiagnosticEventData {
+public:
+ WarningEventData(std::string message, bool debugger_specific)
+ : DiagnosticEventData(DiagnosticEventData::Type::Warning,
+ std::move(message), debugger_specific) {}
+
+ static ConstString GetFlavorString();
+ ConstString GetFlavor() const override;
+
+ static const WarningEventData *GetEventDataFromEvent(const Event *event_ptr);
+};
+
+class ErrorEventData : public DiagnosticEventData {
+public:
+ ErrorEventData(std::string message, bool debugger_specific)
+ : DiagnosticEventData(DiagnosticEventData::Type::Error,
+ std::move(message), debugger_specific) {}
+
+ static ConstString GetFlavorString();
+ ConstString GetFlavor() const override;
+
+ static const ErrorEventData *GetEventDataFromEvent(const Event *event_ptr);
+};
+
} // namespace lldb_private
#endif // LLDB_CORE_DEBUGGER_EVENTS_H
Index: lldb/include/lldb/Core/Debugger.h
===================================================================
--- lldb/include/lldb/Core/Debugger.h
+++ lldb/include/lldb/Core/Debugger.h
@@ -14,6 +14,7 @@
#include <memory>
#include <vector>
+#include "lldb/Core/DebuggerEvents.h"
#include "lldb/Core/FormatEntity.h"
#include "lldb/Core/IOHandler.h"
#include "lldb/Core/SourceManager.h"
@@ -57,7 +58,6 @@
class Stream;
class SymbolContext;
class Target;
-class ProgressEventData;
namespace repro {
class DataRecorder;
@@ -77,6 +77,8 @@
/// Broadcaster event bits definitions.
enum {
eBroadcastBitProgress = (1 << 0),
+ eBroadcastBitWarning = (1 << 1),
+ eBroadcastBitError = (1 << 2),
};
static ConstString GetStaticBroadcasterClass();
@@ -375,6 +377,35 @@
return m_broadcaster_manager_sp;
}
+ /// Report warning events.
+ ///
+ /// Progress events will be delivered to any debuggers that have listeners
+ /// for the eBroadcastBitError.
+ ///
+ /// \param[in] message
+ /// The warning message to be reported.
+ ///
+ /// \param [in] debugger_id
+ /// If this optional parameter has a value, it indicates the unique
+ /// debugger identifier that this progress should be delivered to. If this
+ /// optional parameter does not have a value, the progress will be
+ /// delivered to all debuggers.
+ static void ReportWarning(std::string messsage,
+ llvm::Optional<lldb::user_id_t> debugger_id,
+ std::once_flag *once = nullptr);
+
+ /// Report error events.
+ ///
+ /// Progress events will be delivered to any debuggers that have listeners
+ /// for the eBroadcastBitError.
+ ///
+ /// \param[in] message
+ /// The error message to be reported.
+ ///
+ static void ReportError(std::string messsage,
+ llvm::Optional<lldb::user_id_t> debugger_id,
+ std::once_flag *once = nullptr);
+
protected:
friend class CommandInterpreter;
friend class REPL;
@@ -413,6 +444,11 @@
uint64_t completed, uint64_t total,
llvm::Optional<lldb::user_id_t> debugger_id);
+ template <typename T>
+ static void ReportDiagnosticImpl(uint32_t event_type, std::string message,
+ llvm::Optional<lldb::user_id_t> debugger_id,
+ std::once_flag *once);
+
void PrintProgress(const ProgressEventData &data);
bool StartEventHandlerThread();
@@ -444,6 +480,10 @@
void HandleProgressEvent(const lldb::EventSP &event_sp);
+ void HandleWarningEvent(const lldb::EventSP &event_sp);
+
+ void HandleErrorEvent(const lldb::EventSP &event_sp);
+
// Ensures two threads don't attempt to flush process output in parallel.
std::mutex m_output_flush_mutex;
void FlushProcessOutput(Process &process, bool flush_stdout,
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