JDevlieghere updated this revision to Diff 414899.
JDevlieghere added a comment.
Use the asynchronous error stream
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/lldb/include/lldb/Core/DebuggerEvents.h
lldb/lldb/source/Core/DebuggerEvents.cpp
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 +433,6 @@
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;
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 +2331,31 @@
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;
}
+ constexpr const bool once = true;
+
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(DebuggerDiagnostic::SharedCacheNotEnoughClassesRead,
+ "warning: could not find Objective-C class data in "
+ "the process. This may reduce the quality of type "
+ "information available.\n",
+ once);
+ break;
+ case SharedCacheWarningReason::eExpressionExecutionFailure:
+ debugger.ReportWarning(
+ DebuggerDiagnostic::SharedCacheExpressionExecutionFailure,
+ "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",
+ once);
+ break;
}
}
@@ -2372,17 +2372,25 @@
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(DebuggerDiagnostic::NoExpandedSharedCache, os.str(),
+ true);
}
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
@@ -1323,6 +1323,26 @@
}
}
+void Debugger::ReportWarning(DebuggerDiagnostic diagnostic, std::string message,
+ bool once) {
+ const uint32_t event_type = Debugger::eBroadcastBitWarning;
+ if (!GetBroadcaster().EventTypeHasListeners(event_type))
+ return;
+ EventSP event_sp = std::make_shared<Event>(
+ event_type, new WarningEventData(diagnostic, std::move(message), once));
+ GetBroadcaster().BroadcastEvent(event_sp);
+}
+
+void Debugger::ReportError(DebuggerDiagnostic diagnostic, std::string message,
+ bool once) {
+ const uint32_t event_type = Debugger::eBroadcastBitError;
+ if (!GetBroadcaster().EventTypeHasListeners(event_type))
+ return;
+ EventSP event_sp = std::make_shared<Event>(
+ event_type, new ErrorEventData(diagnostic, std::move(message), once));
+ GetBroadcaster().BroadcastEvent(event_sp);
+}
+
bool Debugger::EnableLog(llvm::StringRef channel,
llvm::ArrayRef<const char *> categories,
llvm::StringRef log_file, uint32_t log_options,
@@ -1604,6 +1624,10 @@
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
@@ -1657,6 +1681,10 @@
} 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);
}
}
@@ -1788,6 +1816,32 @@
output.Flush();
}
+void Debugger::HandleWarningEvent(const lldb::EventSP &event_sp) {
+ auto *data = WarningEventData::GetEventDataFromEvent(event_sp.get());
+ if (!data)
+ return;
+
+ if (data->GetReportOnce())
+ if (!m_reported_diagnostics.insert(data->GetDiagnostic()).second)
+ 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;
+
+ if (data->GetReportOnce())
+ if (!m_reported_diagnostics.insert(data->GetDiagnostic()).second)
+ return;
+
+ Stream &stream = *GetAsyncErrorStream();
+ stream << "error: " << data->GetMessage() << '\n';
+}
+
bool Debugger::HasIOHandlerThread() { return m_io_handler_thread.IsJoinable(); }
bool Debugger::StartIOHandlerThread() {
Index: lldb/lldb/source/Core/DebuggerEvents.cpp
===================================================================
--- lldb/lldb/source/Core/DebuggerEvents.cpp
+++ lldb/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/lldb/include/lldb/Core/DebuggerEvents.h
===================================================================
--- lldb/lldb/include/lldb/Core/DebuggerEvents.h
+++ lldb/lldb/include/lldb/Core/DebuggerEvents.h
@@ -46,6 +46,69 @@
ProgressEventData(const ProgressEventData &) = delete;
const ProgressEventData &operator=(const ProgressEventData &) = delete;
};
+
+enum class DebuggerDiagnostic {
+ SharedCacheNotEnoughClassesRead,
+ SharedCacheExpressionExecutionFailure,
+ NoExpandedSharedCache,
+};
+
+class DiagnosticEventData : public EventData {
+public:
+ enum class Type {
+ Warning,
+ Error,
+ };
+ DiagnosticEventData(Type type, DebuggerDiagnostic diagnostic,
+ std::string message, bool once)
+ : m_message(std::move(message)), m_diagnostic(diagnostic), m_type(type) {}
+ ~DiagnosticEventData() {}
+
+ const std::string &GetMessage() const { return m_message; }
+ Type GetType() const { return m_type; }
+ DebuggerDiagnostic GetDiagnostic() const { return m_diagnostic; }
+ bool GetReportOnce() const { return m_report_once; }
+
+ bool operator==(const DiagnosticEventData &RHS) {
+ return GetDiagnostic() == RHS.GetDiagnostic();
+ }
+
+protected:
+ std::string m_message;
+ DebuggerDiagnostic m_diagnostic;
+ Type m_type;
+ bool m_report_once;
+
+ DiagnosticEventData(const DiagnosticEventData &) = delete;
+ const DiagnosticEventData &operator=(const DiagnosticEventData &) = delete;
+};
+
+class WarningEventData : public DiagnosticEventData {
+public:
+ WarningEventData(DebuggerDiagnostic diagnostic, std::string message,
+ bool once = false)
+ : DiagnosticEventData(DiagnosticEventData::Type::Warning, diagnostic,
+ std::move(message), once){};
+
+ static ConstString GetFlavorString();
+ ConstString GetFlavor() const override;
+
+ static const WarningEventData *GetEventDataFromEvent(const Event *event_ptr);
+};
+
+class ErrorEventData : public DiagnosticEventData {
+public:
+ ErrorEventData(DebuggerDiagnostic diagnostic, std::string message,
+ bool once = false)
+ : DiagnosticEventData(DiagnosticEventData::Type::Error, diagnostic,
+ std::move(message), once) {}
+
+ 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/DebuggerEvents.h
===================================================================
--- lldb/include/lldb/Core/DebuggerEvents.h
+++ lldb/include/lldb/Core/DebuggerEvents.h
@@ -46,6 +46,69 @@
ProgressEventData(const ProgressEventData &) = delete;
const ProgressEventData &operator=(const ProgressEventData &) = delete;
};
+
+enum class DebuggerDiagnostic {
+ SharedCacheNotEnoughClassesRead,
+ SharedCacheExpressionExecutionFailure,
+ NoExpandedSharedCache,
+};
+
+class DiagnosticEventData : public EventData {
+public:
+ enum class Type {
+ Warning,
+ Error,
+ };
+ DiagnosticEventData(Type type, DebuggerDiagnostic diagnostic,
+ std::string message, bool once)
+ : m_message(std::move(message)), m_diagnostic(diagnostic), m_type(type) {}
+ ~DiagnosticEventData() {}
+
+ const std::string &GetMessage() const { return m_message; }
+ Type GetType() const { return m_type; }
+ DebuggerDiagnostic GetDiagnostic() const { return m_diagnostic; }
+ bool GetReportOnce() const { return m_report_once; }
+
+ bool operator==(const DiagnosticEventData &RHS) {
+ return GetDiagnostic() == RHS.GetDiagnostic();
+ }
+
+protected:
+ std::string m_message;
+ DebuggerDiagnostic m_diagnostic;
+ Type m_type;
+ bool m_report_once;
+
+ DiagnosticEventData(const DiagnosticEventData &) = delete;
+ const DiagnosticEventData &operator=(const DiagnosticEventData &) = delete;
+};
+
+class WarningEventData : public DiagnosticEventData {
+public:
+ WarningEventData(DebuggerDiagnostic diagnostic, std::string message,
+ bool once = false)
+ : DiagnosticEventData(DiagnosticEventData::Type::Warning, diagnostic,
+ std::move(message), once){};
+
+ static ConstString GetFlavorString();
+ ConstString GetFlavor() const override;
+
+ static const WarningEventData *GetEventDataFromEvent(const Event *event_ptr);
+};
+
+class ErrorEventData : public DiagnosticEventData {
+public:
+ ErrorEventData(DebuggerDiagnostic diagnostic, std::string message,
+ bool once = false)
+ : DiagnosticEventData(DiagnosticEventData::Type::Error, diagnostic,
+ std::move(message), once) {}
+
+ 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"
@@ -37,6 +38,7 @@
#include "lldb/lldb-types.h"
#include "llvm/ADT/ArrayRef.h"
+#include "llvm/ADT/SmallSet.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/DynamicLibrary.h"
@@ -57,7 +59,6 @@
class Stream;
class SymbolContext;
class Target;
-class ProgressEventData;
namespace repro {
class DataRecorder;
@@ -77,6 +78,8 @@
/// Broadcaster event bits definitions.
enum {
eBroadcastBitProgress = (1 << 0),
+ eBroadcastBitWarning = (1 << 1),
+ eBroadcastBitError = (1 << 2),
};
static ConstString GetStaticBroadcasterClass();
@@ -375,6 +378,26 @@
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.
+ void ReportWarning(DebuggerDiagnostic diagnostic, std::string messsage,
+ bool once = false);
+
+ /// 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.
+ void ReportError(DebuggerDiagnostic diagnostic, std::string messsage,
+ bool once = false);
+
protected:
friend class CommandInterpreter;
friend class REPL;
@@ -444,6 +467,10 @@
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,
@@ -494,6 +521,8 @@
llvm::Optional<uint64_t> m_current_event_id;
+ llvm::SmallSet<DebuggerDiagnostic, 3> m_reported_diagnostics;
+
llvm::StringMap<std::weak_ptr<llvm::raw_ostream>> m_log_streams;
std::shared_ptr<llvm::raw_ostream> m_log_callback_stream_sp;
ConstString m_instance_name;
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