+---------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| ``thread.queue`` | The queue name of the thread if the target OS supports dispatch queues |
+---------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
-| ``thread.stop-reason`` | A textual reason why the thread stopped. If the thread have a recognized frame, this displays its recognized stop reason. Otherwise, gets the stop info description. |
-+---------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
-| ``thread.stop-reason-raw`` | A textual reason why the thread stopped. Always returns stop info description. |
+| ``thread.stop-reason`` | A textual reason each thread stopped |
+---------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| ``thread.return-value`` | The return value of the latest step operation (currently only for step-out.) |
+---------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
ThreadName,
ThreadQueue,
ThreadStopReason,
- ThreadStopReasonRaw,
ThreadReturnValue,
ThreadCompletedExpression,
ScriptThread,
+++ /dev/null
-//===-- AssertFrameRecognizer.cpp -------------------------------*- C++ -*-===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef liblldb_AssertFrameRecognizer_h_
-#define liblldb_AssertFrameRecognizer_h_
-
-#include "lldb/Target/Process.h"
-#include "lldb/Target/StackFrameRecognizer.h"
-#include "lldb/Utility/ConstString.h"
-#include "lldb/Utility/FileSpec.h"
-
-#include <tuple>
-
-namespace lldb_private {
-
-/// Registers the assert stack frame recognizer.
-///
-/// \param[in] process
-/// The process that is currently asserting. This will give us information on
-/// the target and the platform.
-void RegisterAssertFrameRecognizer(Process *process);
-
-/// \class AssertRecognizedStackFrame
-///
-/// Holds the stack frame where the assert is called from.
-class AssertRecognizedStackFrame : public RecognizedStackFrame {
-public:
- AssertRecognizedStackFrame(lldb::StackFrameSP most_relevant_frame_sp);
- lldb::StackFrameSP GetMostRelevantFrame() override;
- llvm::StringRef GetStopDescription() override;
-
-private:
- lldb::StackFrameSP m_most_relevant_frame;
-};
-
-/// \class AssertFrameRecognizer
-///
-/// When a thread stops, it checks depending on the platform if the top frame is
-/// an abort stack frame. If so, it looks for an assert stack frame in the upper
-/// frames and set it as the most relavant frame when found.
-class AssertFrameRecognizer : public StackFrameRecognizer {
-public:
- std::string GetName() override { return "Assert StackFrame Recognizer"; }
- lldb::RecognizedStackFrameSP
- RecognizeFrame(lldb::StackFrameSP frame_sp) override;
-};
-
-} // namespace lldb_private
-
-#endif // liblldb_AssertFrameRecognizer_h_
#include "lldb/Core/ValueObject.h"
#include "lldb/Core/ValueObjectList.h"
#include "lldb/Symbol/VariableList.h"
-#include "lldb/Target/StopInfo.h"
#include "lldb/Utility/StructuredData.h"
#include "lldb/lldb-private-forward.h"
#include "lldb/lldb-public.h"
virtual lldb::ValueObjectSP GetExceptionObject() {
return lldb::ValueObjectSP();
}
- virtual lldb::StackFrameSP GetMostRelevantFrame() { return nullptr; };
- virtual llvm::StringRef GetStopDescription() { return ""; }
virtual ~RecognizedStackFrame(){};
protected:
virtual void RefreshStateAfterStop() = 0;
- void SelectMostRelevantFrame();
-
- llvm::StringRef GetStopDescription();
-
- llvm::StringRef GetStopDescriptionRaw();
-
void WillStop();
bool ShouldStop(Event *event_ptr);
def check_stop_reason(self):
matched = lldbplatformutil.match_android_device(
self.getArchitecture(), valid_api_levels=list(range(1, 16 + 1)))
-
- target = self.dbg.GetTargetAtIndex(0)
- process = target.GetProcess()
-
- thread = lldbutil.get_stopped_thread(process, lldb.eStopReasonSignal)
-
- stop_reason = 'stop reason = ' + thread.GetStopDescription(256)
+ if matched:
+ # On android until API-16 the abort() call ended in a sigsegv
+ # instead of in a sigabrt
+ stop_reason = 'stop reason = signal SIGSEGV'
+ else:
+ stop_reason = 'stop reason = signal SIGABRT'
# The stop reason of the thread should be an abort signal or exception.
self.expect("thread list", STOPPED_DUE_TO_ASSERT,
self.runCmd("run", RUN_SUCCEEDED)
self.check_stop_reason()
- # change current frame to frame 0, since recognizer might have selected
- # different frame.
- target = self.dbg.GetTargetAtIndex(0)
- self.assertTrue(target, VALID_TARGET)
-
- process = target.GetProcess()
- self.assertTrue(process.IsValid(), "current process is valid")
-
- thread = process.GetSelectedThread()
- self.assertTrue(thread.IsValid(), "current thread is valid")
-
- thread.SetSelectedFrame(0)
- frame = thread.GetSelectedFrame()
-
- self.assertTrue(thread.GetFrameAtIndex(0) == frame, "Frame #0 selected")
-
# lldb should be able to read from registers from the inferior after
# asserting.
lldbplatformutil.check_first_register_readable(self)
launch_info = lldb.SBLaunchInfo(["a.out", "0"])
lldbutil.run_to_name_breakpoint(self, "objc_exception_throw", launch_info=launch_info)
- self.expect("thread list",
- substrs=['stopped', 'stop reason = hit Objective-C exception'])
+ self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
+ substrs=['stopped', 'stop reason = breakpoint'])
self.expect('thread exception', substrs=[
'(NSException *) exception = ',
StopInfoSP stop_info_sp = exe_ctx.GetThreadPtr()->GetStopInfo();
if (stop_info_sp) {
- const char *stop_desc =
- exe_ctx.GetThreadPtr()->GetStopDescription().data();
+ const char *stop_desc = stop_info_sp->GetDescription();
if (stop_desc) {
if (dst)
return ::snprintf(dst, dst_len, "%s", stop_desc);
ENTRY("queue", ThreadQueue),
ENTRY("name", ThreadName),
ENTRY("stop-reason", ThreadStopReason),
- ENTRY("stop-reason-raw", ThreadStopReasonRaw),
ENTRY("return-value", ThreadReturnValue),
ENTRY("completed-expression", ThreadCompletedExpression),
};
ENUM_TO_CSTR(ThreadName);
ENUM_TO_CSTR(ThreadQueue);
ENUM_TO_CSTR(ThreadStopReason);
- ENUM_TO_CSTR(ThreadStopReasonRaw);
ENUM_TO_CSTR(ThreadReturnValue);
ENUM_TO_CSTR(ThreadCompletedExpression);
ENUM_TO_CSTR(ScriptThread);
case Entry::Type::ThreadStopReason:
if (exe_ctx) {
- if (Thread *thread = exe_ctx->GetThreadPtr()) {
- llvm::StringRef stop_description = thread->GetStopDescription();
- if (!stop_description.empty()) {
- s.PutCString(stop_description);
- return true;
- }
- }
- }
- return false;
-
- case Entry::Type::ThreadStopReasonRaw:
- if (exe_ctx) {
- if (Thread *thread = exe_ctx->GetThreadPtr()) {
- llvm::StringRef stop_description = thread->GetStopDescriptionRaw();
- if (!stop_description.empty()) {
- s.PutCString(stop_description);
- return true;
+ Thread *thread = exe_ctx->GetThreadPtr();
+ if (thread) {
+ StopInfoSP stop_info_sp = thread->GetStopInfo();
+ if (stop_info_sp && stop_info_sp->IsValid()) {
+ const char *cstr = stop_info_sp->GetDescription();
+ if (cstr && cstr[0]) {
+ s.PutCString(cstr);
+ return true;
+ }
}
}
}
ValueObjectSP exception;
lldb::ValueObjectSP GetExceptionObject() override { return exception; }
-
- llvm::StringRef GetStopDescription() override {
- return "hit Objective-C exception";
- }
};
class ObjCExceptionThrowFrameRecognizer : public StackFrameRecognizer {
+++ /dev/null
-#include "lldb/Core/Module.h"
-#include "lldb/Symbol/Function.h"
-#include "lldb/Symbol/SymbolContext.h"
-#include "lldb/Target/Process.h"
-#include "lldb/Target/StackFrameList.h"
-#include "lldb/Target/Target.h"
-#include "lldb/Target/Thread.h"
-
-#include "lldb/Utility/Log.h"
-#include "lldb/Utility/Logging.h"
-
-#include "lldb/Target/AssertFrameRecognizer.h"
-
-using namespace llvm;
-using namespace lldb;
-using namespace lldb_private;
-
-namespace lldb_private {
-/// Fetches the abort frame location depending on the current platform.
-///
-/// \param[in] process_sp
-/// The process that is currently aborting. This will give us information on
-/// the target and the platform.
-/// \return
-/// If the platform is supported, returns an optional tuple containing
-/// the abort module as a \a FileSpec and the symbol name as a \a StringRef.
-/// Otherwise, returns \a llvm::None.
-llvm::Optional<std::tuple<FileSpec, StringRef>>
-GetAbortLocation(Process *process) {
- Target &target = process->GetTarget();
-
- StringRef module_name;
- StringRef symbol_name;
-
- switch (target.GetArchitecture().GetTriple().getOS()) {
- case llvm::Triple::Darwin:
- case llvm::Triple::MacOSX:
- module_name = "libsystem_kernel.dylib";
- symbol_name = "__pthread_kill";
- break;
- case llvm::Triple::Linux:
- module_name = "libc.so.6";
- symbol_name = "__GI_raise";
- break;
- default:
- Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_UNWIND));
- LLDB_LOG(log, "AssertFrameRecognizer::GetAbortLocation Unsupported OS");
- return llvm::None;
- }
-
- return std::make_tuple(FileSpec(module_name), symbol_name);
-}
-
-/// Fetches the assert frame location depending on the current platform.
-///
-/// \param[in] process_sp
-/// The process that is currently asserting. This will give us information on
-/// the target and the platform.
-/// \return
-/// If the platform is supported, returns an optional tuple containing
-/// the asserting frame module as a \a FileSpec and the symbol name as a \a
-/// StringRef.
-/// Otherwise, returns \a llvm::None.
-llvm::Optional<std::tuple<FileSpec, StringRef>>
-GetAssertLocation(Process *process) {
- Target &target = process->GetTarget();
-
- StringRef module_name;
- StringRef symbol_name;
-
- switch (target.GetArchitecture().GetTriple().getOS()) {
- case llvm::Triple::Darwin:
- case llvm::Triple::MacOSX:
- module_name = "libsystem_c.dylib";
- symbol_name = "__assert_rtn";
- break;
- case llvm::Triple::Linux:
- module_name = "libc.so.6";
- symbol_name = "__GI___assert_fail";
- break;
- default:
- Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_UNWIND));
- LLDB_LOG(log, "AssertFrameRecognizer::GetAbortLocation Unsupported OS");
- return llvm::None;
- }
-
- return std::make_tuple(FileSpec(module_name), symbol_name);
-}
-
-void RegisterAssertFrameRecognizer(Process *process) {
- static llvm::once_flag g_once_flag;
- llvm::call_once(g_once_flag, [process]() {
- auto abort_location = GetAbortLocation(process);
-
- if (!abort_location.hasValue())
- return;
-
- FileSpec module_spec;
- StringRef function_name;
- std::tie(module_spec, function_name) = *abort_location;
-
- StackFrameRecognizerManager::AddRecognizer(
- StackFrameRecognizerSP(new AssertFrameRecognizer()),
- module_spec.GetFilename(), ConstString(function_name), false);
- });
-}
-
-} // namespace lldb_private
-
-AssertRecognizedStackFrame::AssertRecognizedStackFrame(
- StackFrameSP most_relevant_frame_sp)
- : m_most_relevant_frame(most_relevant_frame_sp) {}
-
-lldb::RecognizedStackFrameSP
-AssertFrameRecognizer::RecognizeFrame(lldb::StackFrameSP frame_sp) {
- ThreadSP thread_sp = frame_sp->GetThread();
- ProcessSP process_sp = thread_sp->GetProcess();
-
- auto assert_location = GetAssertLocation(process_sp.get());
-
- if (!assert_location.hasValue())
- return RecognizedStackFrameSP();
-
- FileSpec module_spec;
- StringRef function_name;
- std::tie(module_spec, function_name) = *assert_location;
-
- const uint32_t frames_to_fetch = 5;
- const uint32_t last_frame_index = frames_to_fetch - 1;
- StackFrameSP prev_frame_sp = nullptr;
-
- // Fetch most relevant frame
- for (uint32_t frame_index = 0; frame_index < frames_to_fetch; frame_index++) {
- prev_frame_sp = thread_sp->GetStackFrameAtIndex(frame_index);
-
- if (!prev_frame_sp) {
- Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_UNWIND));
- LLDB_LOG(log, "Abort Recognizer: Hit unwinding bound ({1} frames)!",
- frames_to_fetch);
- break;
- }
-
- SymbolContext sym_ctx =
- prev_frame_sp->GetSymbolContext(eSymbolContextEverything);
-
- if (sym_ctx.module_sp->GetFileSpec().FileEquals(module_spec) &&
- sym_ctx.GetFunctionName() == ConstString(function_name)) {
-
- // We go a frame beyond the assert location because the most relevant
- // frame for the user is the one in which the assert function was called.
- // If the assert location is the last frame fetched, then it is set as
- // the most relevant frame.
-
- StackFrameSP most_relevant_frame_sp = thread_sp->GetStackFrameAtIndex(
- std::min(frame_index + 1, last_frame_index));
-
- // Pass assert location to AbortRecognizedStackFrame to set as most
- // relevant frame.
- return lldb::RecognizedStackFrameSP(
- new AssertRecognizedStackFrame(most_relevant_frame_sp));
- }
- }
-
- return RecognizedStackFrameSP();
-};
-
-lldb::StackFrameSP AssertRecognizedStackFrame::GetMostRelevantFrame() {
- return m_most_relevant_frame;
-}
-
-llvm::StringRef AssertRecognizedStackFrame::GetStopDescription() {
- return "hit program assert";
-}
add_lldb_library(lldbTarget
ABI.cpp
- AssertFrameRecognizer.cpp
ExecutionContext.cpp
InstrumentationRuntime.cpp
InstrumentationRuntimeStopInfo.cpp
#include "lldb/Symbol/Function.h"
#include "lldb/Symbol/Symbol.h"
#include "lldb/Target/ABI.h"
-#include "lldb/Target/AssertFrameRecognizer.h"
#include "lldb/Target/DynamicLoader.h"
#include "lldb/Target/InstrumentationRuntime.h"
#include "lldb/Target/JITLoader.h"
target_sp->GetPlatform()->GetDefaultMemoryCacheLineSize();
if (!value_sp->OptionWasSet() && platform_cache_line_size != 0)
value_sp->SetUInt64Value(platform_cache_line_size);
-
- RegisterAssertFrameRecognizer(this);
}
Process::~Process() {
Debugger &debugger = process_sp->GetTarget().GetDebugger();
if (debugger.GetTargetList().GetSelectedTarget().get() ==
&process_sp->GetTarget()) {
- ThreadSP thread_sp = process_sp->GetThreadList().GetSelectedThread();
-
- if (!thread_sp || !thread_sp->IsValid())
- return false;
-
const bool only_threads_with_stop_reason = true;
- const uint32_t start_frame = thread_sp->GetSelectedFrameIndex();
+ const uint32_t start_frame = 0;
const uint32_t num_frames = 1;
const uint32_t num_frames_with_source = 1;
const bool stop_format = true;
-
process_sp->GetStatus(*stream);
process_sp->GetThreadStatus(*stream, only_threads_with_stop_reason,
start_frame, num_frames,
StackFrameRecognizerSP GetRecognizerForFrame(StackFrameSP frame) {
const SymbolContext &symctx =
- frame->GetSymbolContext(eSymbolContextEverything);
+ frame->GetSymbolContext(eSymbolContextModule | eSymbolContextFunction);
ConstString function_name = symctx.GetFunctionName();
ModuleSP module_sp = symctx.module_sp;
if (!module_sp) return StackFrameRecognizerSP();
m_state = state;
}
-llvm::StringRef Thread::GetStopDescription() {
- StackFrameSP frame_sp = GetStackFrameAtIndex(0);
-
- if (!frame_sp)
- return GetStopDescriptionRaw();
-
- auto recognized_frame_sp = frame_sp->GetRecognizedFrame();
-
- if (!recognized_frame_sp)
- return GetStopDescriptionRaw();
-
- llvm::StringRef recognized_stop_description =
- recognized_frame_sp->GetStopDescription();
-
- if (!recognized_stop_description.empty())
- return recognized_stop_description;
-
- return GetStopDescriptionRaw();
-}
-
-llvm::StringRef Thread::GetStopDescriptionRaw() {
- StopInfoSP stop_info_sp = GetStopInfo();
- llvm::StringRef raw_stop_description;
- if (stop_info_sp && stop_info_sp->IsValid())
- raw_stop_description = stop_info_sp->GetDescription();
- return raw_stop_description;
-}
-
-void Thread::SelectMostRelevantFrame() {
- Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_THREAD);
-
- auto frames_list_sp = GetStackFrameList();
-
- // Only the top frame should be recognized.
- auto frame_sp = frames_list_sp->GetFrameAtIndex(0);
-
- auto recognized_frame_sp = frame_sp->GetRecognizedFrame();
-
- if (!recognized_frame_sp) {
- LLDB_LOG(log, "Frame #0 not recognized");
- return;
- }
-
- if (StackFrameSP most_relevant_frame_sp =
- recognized_frame_sp->GetMostRelevantFrame()) {
- LLDB_LOG(log, "Found most relevant frame at index {0}",
- most_relevant_frame_sp->GetFrameIndex());
- SetSelectedFrame(most_relevant_frame_sp.get());
- } else {
- LLDB_LOG(log, "No relevant frame!");
- }
-}
-
void Thread::WillStop() {
ThreadPlan *current_plan = GetCurrentPlan();
- SelectMostRelevantFrame();
-
// FIXME: I may decide to disallow threads with no plans. In which
// case this should go to an assert.
+++ /dev/null
-#include <assert.h>
-
-int main() {
- int a = 42;
- assert(a == 42);
- a--;
- assert(a == 42);
- return 0;
-}
+++ /dev/null
-# UNSUPPORTED: system-windows
-# RUN: %clang_host -g -O0 %S/Inputs/assert.c -o %t.out
-# RUN: %lldb -b -s %s %t.out | FileCheck %s
-run
-# CHECK: thread #{{.*}}stop reason = hit program assert
-frame info
-# CHECK: frame #{{.*}}`main at assert.c
-frame recognizer info 0
-# CHECK: frame 0 is recognized by Assert StackFrame Recognizer
-set set thread-format "{${thread.stop-reason-raw}}\n"
-thread info
-# CHECK: signal SIGABRT
-q
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