| # Usage: |
| # art/test/run-test --host --gdb [--64] [--interpreter] 004-JniTest |
| # 'b Java_Main_shortMethod' |
| # 'r' |
| # 'command script import host_art_bt.py' |
| # 'host_art_bt' |
| |
| import sys |
| import re |
| |
| import lldb |
| |
| |
| def host_art_bt(debugger, command, result, internal_dict): |
| prettified_frames = [] |
| lldb_frame_index = 0 |
| art_frame_index = 0 |
| target = debugger.GetSelectedTarget() |
| process = target.GetProcess() |
| thread = process.GetSelectedThread() |
| while lldb_frame_index < thread.GetNumFrames(): |
| frame = thread.GetFrameAtIndex(lldb_frame_index) |
| if frame.GetModule() and re.match( |
| r"JIT\(.*?\)", frame.GetModule().GetFileSpec().GetFilename() |
| ): |
| # Compiled Java frame |
| |
| # Get function/filename/lineno from symbol context |
| symbol = frame.GetSymbol() |
| if not symbol: |
| print("No symbol info for compiled Java frame: ", frame) |
| sys.exit(1) |
| line_entry = frame.GetLineEntry() |
| prettified_frames.append( |
| { |
| "function": symbol.GetName(), |
| "file": str(line_entry.GetFileSpec()) if line_entry else None, |
| "line": line_entry.GetLine() if line_entry else -1, |
| } |
| ) |
| |
| # Skip art frames |
| while True: |
| art_stack_visitor = frame.EvaluateExpression( |
| """struct GetStackVisitor : public StackVisitor { GetStackVisitor(int depth_) : StackVisitor(Thread::Current(), NULL), depth(depth_) {} bool VisitFrame() { if (cur_depth_ == depth) { return false; } else { return true; } } int depth; }; GetStackVisitor visitor(""" |
| + str(art_frame_index) |
| + """); visitor.WalkStack(true); visitor""" |
| ) |
| art_method = frame.EvaluateExpression( |
| art_stack_visitor.GetName() + """.GetMethod()""" |
| ) |
| if art_method.GetValueAsUnsigned() != 0: |
| art_method_name = frame.EvaluateExpression( |
| """art::PrettyMethod(""" + art_method.GetName() + """, true)""" |
| ) |
| art_method_name_data = frame.EvaluateExpression( |
| art_method_name.GetName() + """.c_str()""" |
| ).GetValueAsUnsigned() |
| art_method_name_size = frame.EvaluateExpression( |
| art_method_name.GetName() + """.length()""" |
| ).GetValueAsUnsigned() |
| error = lldb.SBError() |
| art_method_name = process.ReadCStringFromMemory( |
| art_method_name_data, art_method_name_size + 1, error |
| ) |
| if not error.Success: |
| print("Failed to read method name") |
| sys.exit(1) |
| if art_method_name != symbol.GetName(): |
| print( |
| "Function names in native symbol and art runtime stack do not match: ", |
| symbol.GetName(), |
| " != ", |
| art_method_name, |
| ) |
| art_frame_index = art_frame_index + 1 |
| break |
| art_frame_index = art_frame_index + 1 |
| |
| # Skip native frames |
| lldb_frame_index = lldb_frame_index + 1 |
| if lldb_frame_index < thread.GetNumFrames(): |
| frame = thread.GetFrameAtIndex(lldb_frame_index) |
| if frame.GetModule() and re.match( |
| r"JIT\(.*?\)", frame.GetModule().GetFileSpec().GetFilename() |
| ): |
| # Another compile Java frame |
| # Don't skip; leave it to the next iteration |
| continue |
| elif frame.GetSymbol() and ( |
| frame.GetSymbol().GetName() == "art_quick_invoke_stub" |
| or frame.GetSymbol().GetName() == "art_quick_invoke_static_stub" |
| ): |
| # art_quick_invoke_stub / art_quick_invoke_static_stub |
| # Skip until we get past the next ArtMethod::Invoke() |
| while True: |
| lldb_frame_index = lldb_frame_index + 1 |
| if lldb_frame_index >= thread.GetNumFrames(): |
| print( |
| "ArtMethod::Invoke not found below art_quick_invoke_stub/art_quick_invoke_static_stub" |
| ) |
| sys.exit(1) |
| frame = thread.GetFrameAtIndex(lldb_frame_index) |
| if ( |
| frame.GetSymbol() |
| and frame.GetSymbol().GetName() |
| == "art::mirror::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)" |
| ): |
| lldb_frame_index = lldb_frame_index + 1 |
| break |
| else: |
| print("Invalid frame below compiled Java frame: ", frame) |
| elif ( |
| frame.GetSymbol() |
| and frame.GetSymbol().GetName() == "art_quick_generic_jni_trampoline" |
| ): |
| # Interpreted JNI frame for x86_64 |
| |
| # Skip art frames |
| while True: |
| art_stack_visitor = frame.EvaluateExpression( |
| """struct GetStackVisitor : public StackVisitor { GetStackVisitor(int depth_) : StackVisitor(Thread::Current(), NULL), depth(depth_) {} bool VisitFrame() { if (cur_depth_ == depth) { return false; } else { return true; } } int depth; }; GetStackVisitor visitor(""" |
| + str(art_frame_index) |
| + """); visitor.WalkStack(true); visitor""" |
| ) |
| art_method = frame.EvaluateExpression( |
| art_stack_visitor.GetName() + """.GetMethod()""" |
| ) |
| if art_method.GetValueAsUnsigned() != 0: |
| # Get function/filename/lineno from ART runtime |
| art_method_name = frame.EvaluateExpression( |
| """art::PrettyMethod(""" + art_method.GetName() + """, true)""" |
| ) |
| art_method_name_data = frame.EvaluateExpression( |
| art_method_name.GetName() + """.c_str()""" |
| ).GetValueAsUnsigned() |
| art_method_name_size = frame.EvaluateExpression( |
| art_method_name.GetName() + """.length()""" |
| ).GetValueAsUnsigned() |
| error = lldb.SBError() |
| function = process.ReadCStringFromMemory( |
| art_method_name_data, art_method_name_size + 1, error |
| ) |
| |
| prettified_frames.append( |
| {"function": function, "file": None, "line": -1} |
| ) |
| |
| art_frame_index = art_frame_index + 1 |
| break |
| art_frame_index = art_frame_index + 1 |
| |
| # Skip native frames |
| lldb_frame_index = lldb_frame_index + 1 |
| if lldb_frame_index < thread.GetNumFrames(): |
| frame = thread.GetFrameAtIndex(lldb_frame_index) |
| if frame.GetSymbol() and ( |
| frame.GetSymbol().GetName() == "art_quick_invoke_stub" |
| or frame.GetSymbol().GetName() == "art_quick_invoke_static_stub" |
| ): |
| # art_quick_invoke_stub / art_quick_invoke_static_stub |
| # Skip until we get past the next ArtMethod::Invoke() |
| while True: |
| lldb_frame_index = lldb_frame_index + 1 |
| if lldb_frame_index >= thread.GetNumFrames(): |
| print( |
| "ArtMethod::Invoke not found below art_quick_invoke_stub/art_quick_invoke_static_stub" |
| ) |
| sys.exit(1) |
| frame = thread.GetFrameAtIndex(lldb_frame_index) |
| if ( |
| frame.GetSymbol() |
| and frame.GetSymbol().GetName() |
| == "art::mirror::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)" |
| ): |
| lldb_frame_index = lldb_frame_index + 1 |
| break |
| else: |
| print("Invalid frame below compiled Java frame: ", frame) |
| elif frame.GetSymbol() and re.search( |
| r"art::interpreter::", frame.GetSymbol().GetName() |
| ): |
| # Interpreted Java frame |
| |
| while True: |
| lldb_frame_index = lldb_frame_index + 1 |
| if lldb_frame_index >= thread.GetNumFrames(): |
| print("art::interpreter::Execute not found in interpreter frame") |
| sys.exit(1) |
| frame = thread.GetFrameAtIndex(lldb_frame_index) |
| if ( |
| frame.GetSymbol() |
| and frame.GetSymbol().GetName() |
| == "art::interpreter::Execute(art::Thread*, art::MethodHelper&, art::DexFile::CodeItem const*, art::ShadowFrame&, art::JValue)" |
| ): |
| break |
| |
| # Skip art frames |
| while True: |
| art_stack_visitor = frame.EvaluateExpression( |
| """struct GetStackVisitor : public StackVisitor { GetStackVisitor(int depth_) : StackVisitor(Thread::Current(), NULL), depth(depth_) {} bool VisitFrame() { if (cur_depth_ == depth) { return false; } else { return true; } } int depth; }; GetStackVisitor visitor(""" |
| + str(art_frame_index) |
| + """); visitor.WalkStack(true); visitor""" |
| ) |
| art_method = frame.EvaluateExpression( |
| art_stack_visitor.GetName() + """.GetMethod()""" |
| ) |
| if art_method.GetValueAsUnsigned() != 0: |
| # Get function/filename/lineno from ART runtime |
| art_method_name = frame.EvaluateExpression( |
| """art::PrettyMethod(""" + art_method.GetName() + """, true)""" |
| ) |
| art_method_name_data = frame.EvaluateExpression( |
| art_method_name.GetName() + """.c_str()""" |
| ).GetValueAsUnsigned() |
| art_method_name_size = frame.EvaluateExpression( |
| art_method_name.GetName() + """.length()""" |
| ).GetValueAsUnsigned() |
| error = lldb.SBError() |
| function = process.ReadCStringFromMemory( |
| art_method_name_data, art_method_name_size + 1, error |
| ) |
| |
| line = frame.EvaluateExpression( |
| art_stack_visitor.GetName() |
| + """.GetMethod()->GetLineNumFromDexPC(""" |
| + art_stack_visitor.GetName() |
| + """.GetDexPc(true))""" |
| ).GetValueAsUnsigned() |
| |
| file_name = frame.EvaluateExpression( |
| art_method.GetName() + """->GetDeclaringClassSourceFile()""" |
| ) |
| file_name_data = file_name.GetValueAsUnsigned() |
| file_name_size = frame.EvaluateExpression( |
| """(size_t)strlen(""" + file_name.GetName() + """)""" |
| ).GetValueAsUnsigned() |
| error = lldb.SBError() |
| file_name = process.ReadCStringFromMemory( |
| file_name_data, file_name_size + 1, error |
| ) |
| if not error.Success(): |
| print("Failed to read source file name") |
| sys.exit(1) |
| |
| prettified_frames.append( |
| {"function": function, "file": file_name, "line": line} |
| ) |
| |
| art_frame_index = art_frame_index + 1 |
| break |
| art_frame_index = art_frame_index + 1 |
| |
| # Skip native frames |
| while True: |
| lldb_frame_index = lldb_frame_index + 1 |
| if lldb_frame_index >= thread.GetNumFrames(): |
| print("Can not get past interpreter native frames") |
| sys.exit(1) |
| frame = thread.GetFrameAtIndex(lldb_frame_index) |
| if frame.GetSymbol() and not re.search( |
| r"art::interpreter::", frame.GetSymbol().GetName() |
| ): |
| break |
| else: |
| # Other frames. Add them as-is. |
| frame = thread.GetFrameAtIndex(lldb_frame_index) |
| lldb_frame_index = lldb_frame_index + 1 |
| if frame.GetModule(): |
| module_name = frame.GetModule().GetFileSpec().GetFilename() |
| if not module_name in [ |
| "libartd.so", |
| "dalvikvm32", |
| "dalvikvm64", |
| "libc.so.6", |
| ]: |
| prettified_frames.append( |
| { |
| "function": frame.GetSymbol().GetName() |
| if frame.GetSymbol() |
| else None, |
| "file": str(frame.GetLineEntry().GetFileSpec()) |
| if frame.GetLineEntry() |
| else None, |
| "line": frame.GetLineEntry().GetLine() |
| if frame.GetLineEntry() |
| else -1, |
| } |
| ) |
| |
| for prettified_frame in prettified_frames: |
| print( |
| prettified_frame["function"], |
| prettified_frame["file"], |
| prettified_frame["line"], |
| ) |
| |
| |
| def __lldb_init_module(debugger, internal_dict): |
| debugger.HandleCommand("command script add -f host_art_bt.host_art_bt host_art_bt") |