| // Copyright 2016 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/profiler/profiler-listener.h" |
| |
| #include "src/deoptimizer.h" |
| #include "src/profiler/cpu-profiler.h" |
| #include "src/profiler/profile-generator-inl.h" |
| #include "src/source-position-table.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| ProfilerListener::ProfilerListener(Isolate* isolate) |
| : function_and_resource_names_(isolate->heap()) {} |
| |
| ProfilerListener::~ProfilerListener() { |
| for (auto code_entry : code_entries_) { |
| delete code_entry; |
| } |
| } |
| |
| void ProfilerListener::CallbackEvent(Name* name, Address entry_point) { |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = entry_point; |
| rec->entry = NewCodeEntry(CodeEventListener::CALLBACK_TAG, GetName(name)); |
| rec->size = 1; |
| DispatchCodeEvent(evt_rec); |
| } |
| |
| void ProfilerListener::CodeCreateEvent(CodeEventListener::LogEventsAndTags tag, |
| AbstractCode* code, const char* name) { |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = code->address(); |
| rec->entry = NewCodeEntry( |
| tag, GetFunctionName(name), CodeEntry::kEmptyNamePrefix, |
| CodeEntry::kEmptyResourceName, CpuProfileNode::kNoLineNumberInfo, |
| CpuProfileNode::kNoColumnNumberInfo, NULL, code->instruction_start()); |
| RecordInliningInfo(rec->entry, code); |
| rec->size = code->ExecutableSize(); |
| DispatchCodeEvent(evt_rec); |
| } |
| |
| void ProfilerListener::CodeCreateEvent(CodeEventListener::LogEventsAndTags tag, |
| AbstractCode* code, Name* name) { |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = code->address(); |
| rec->entry = NewCodeEntry( |
| tag, GetFunctionName(name), CodeEntry::kEmptyNamePrefix, |
| CodeEntry::kEmptyResourceName, CpuProfileNode::kNoLineNumberInfo, |
| CpuProfileNode::kNoColumnNumberInfo, NULL, code->instruction_start()); |
| RecordInliningInfo(rec->entry, code); |
| rec->size = code->ExecutableSize(); |
| DispatchCodeEvent(evt_rec); |
| } |
| |
| void ProfilerListener::CodeCreateEvent(CodeEventListener::LogEventsAndTags tag, |
| AbstractCode* code, |
| SharedFunctionInfo* shared, |
| Name* script_name) { |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = code->address(); |
| rec->entry = NewCodeEntry( |
| tag, GetFunctionName(shared->DebugName()), CodeEntry::kEmptyNamePrefix, |
| GetName(InferScriptName(script_name, shared)), |
| CpuProfileNode::kNoLineNumberInfo, CpuProfileNode::kNoColumnNumberInfo, |
| NULL, code->instruction_start()); |
| RecordInliningInfo(rec->entry, code); |
| rec->entry->FillFunctionInfo(shared); |
| rec->size = code->ExecutableSize(); |
| DispatchCodeEvent(evt_rec); |
| } |
| |
| void ProfilerListener::CodeCreateEvent(CodeEventListener::LogEventsAndTags tag, |
| AbstractCode* abstract_code, |
| SharedFunctionInfo* shared, |
| Name* script_name, int line, |
| int column) { |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = abstract_code->address(); |
| Script* script = Script::cast(shared->script()); |
| JITLineInfoTable* line_table = NULL; |
| if (script) { |
| line_table = new JITLineInfoTable(); |
| int offset = abstract_code->IsCode() ? Code::kHeaderSize |
| : BytecodeArray::kHeaderSize; |
| int start_position = shared->start_position(); |
| int end_position = shared->end_position(); |
| for (SourcePositionTableIterator it(abstract_code->source_position_table()); |
| !it.done(); it.Advance()) { |
| int position = it.source_position(); |
| // TODO(alph): in case of inlining the position may correspond to an |
| // inlined function source code. Do not collect positions that fall |
| // beyond the function source code. There's however a chance the |
| // inlined function has similar positions but in another script. So |
| // the proper fix is to store script_id in some form along with the |
| // inlined function positions. |
| if (position < start_position || position >= end_position) continue; |
| int line_number = script->GetLineNumber(position) + 1; |
| int pc_offset = it.code_offset() + offset; |
| line_table->SetPosition(pc_offset, line_number); |
| } |
| } |
| rec->entry = NewCodeEntry( |
| tag, GetFunctionName(shared->DebugName()), CodeEntry::kEmptyNamePrefix, |
| GetName(InferScriptName(script_name, shared)), line, column, line_table, |
| abstract_code->instruction_start()); |
| RecordInliningInfo(rec->entry, abstract_code); |
| RecordDeoptInlinedFrames(rec->entry, abstract_code); |
| rec->entry->FillFunctionInfo(shared); |
| rec->size = abstract_code->ExecutableSize(); |
| DispatchCodeEvent(evt_rec); |
| } |
| |
| void ProfilerListener::CodeCreateEvent(CodeEventListener::LogEventsAndTags tag, |
| AbstractCode* code, int args_count) { |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = code->address(); |
| rec->entry = NewCodeEntry( |
| tag, GetName(args_count), "args_count: ", CodeEntry::kEmptyResourceName, |
| CpuProfileNode::kNoLineNumberInfo, CpuProfileNode::kNoColumnNumberInfo, |
| NULL, code->instruction_start()); |
| RecordInliningInfo(rec->entry, code); |
| rec->size = code->ExecutableSize(); |
| DispatchCodeEvent(evt_rec); |
| } |
| |
| void ProfilerListener::CodeMoveEvent(AbstractCode* from, Address to) { |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_MOVE); |
| CodeMoveEventRecord* rec = &evt_rec.CodeMoveEventRecord_; |
| rec->from = from->address(); |
| rec->to = to; |
| DispatchCodeEvent(evt_rec); |
| } |
| |
| void ProfilerListener::CodeDisableOptEvent(AbstractCode* code, |
| SharedFunctionInfo* shared) { |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_DISABLE_OPT); |
| CodeDisableOptEventRecord* rec = &evt_rec.CodeDisableOptEventRecord_; |
| rec->start = code->address(); |
| rec->bailout_reason = GetBailoutReason(shared->disable_optimization_reason()); |
| DispatchCodeEvent(evt_rec); |
| } |
| |
| void ProfilerListener::CodeDeoptEvent(Code* code, Address pc, |
| int fp_to_sp_delta) { |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_DEOPT); |
| CodeDeoptEventRecord* rec = &evt_rec.CodeDeoptEventRecord_; |
| Deoptimizer::DeoptInfo info = Deoptimizer::GetDeoptInfo(code, pc); |
| rec->start = code->address(); |
| rec->deopt_reason = DeoptimizeReasonToString(info.deopt_reason); |
| rec->position = info.position; |
| rec->deopt_id = info.deopt_id; |
| rec->pc = reinterpret_cast<void*>(pc); |
| rec->fp_to_sp_delta = fp_to_sp_delta; |
| DispatchCodeEvent(evt_rec); |
| } |
| |
| void ProfilerListener::GetterCallbackEvent(Name* name, Address entry_point) { |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = entry_point; |
| rec->entry = |
| NewCodeEntry(CodeEventListener::CALLBACK_TAG, GetName(name), "get "); |
| rec->size = 1; |
| DispatchCodeEvent(evt_rec); |
| } |
| |
| void ProfilerListener::RegExpCodeCreateEvent(AbstractCode* code, |
| String* source) { |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = code->address(); |
| rec->entry = NewCodeEntry( |
| CodeEventListener::REG_EXP_TAG, GetName(source), "RegExp: ", |
| CodeEntry::kEmptyResourceName, CpuProfileNode::kNoLineNumberInfo, |
| CpuProfileNode::kNoColumnNumberInfo, NULL, code->instruction_start()); |
| rec->size = code->ExecutableSize(); |
| DispatchCodeEvent(evt_rec); |
| } |
| |
| void ProfilerListener::SetterCallbackEvent(Name* name, Address entry_point) { |
| CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION); |
| CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_; |
| rec->start = entry_point; |
| rec->entry = |
| NewCodeEntry(CodeEventListener::CALLBACK_TAG, GetName(name), "set "); |
| rec->size = 1; |
| DispatchCodeEvent(evt_rec); |
| } |
| |
| Name* ProfilerListener::InferScriptName(Name* name, SharedFunctionInfo* info) { |
| if (name->IsString() && String::cast(name)->length()) return name; |
| if (!info->script()->IsScript()) return name; |
| Object* source_url = Script::cast(info->script())->source_url(); |
| return source_url->IsName() ? Name::cast(source_url) : name; |
| } |
| |
| void ProfilerListener::RecordInliningInfo(CodeEntry* entry, |
| AbstractCode* abstract_code) { |
| if (!abstract_code->IsCode()) return; |
| Code* code = abstract_code->GetCode(); |
| if (code->kind() != Code::OPTIMIZED_FUNCTION) return; |
| DeoptimizationInputData* deopt_input_data = |
| DeoptimizationInputData::cast(code->deoptimization_data()); |
| int deopt_count = deopt_input_data->DeoptCount(); |
| for (int i = 0; i < deopt_count; i++) { |
| int pc_offset = deopt_input_data->Pc(i)->value(); |
| if (pc_offset == -1) continue; |
| int translation_index = deopt_input_data->TranslationIndex(i)->value(); |
| TranslationIterator it(deopt_input_data->TranslationByteArray(), |
| translation_index); |
| Translation::Opcode opcode = static_cast<Translation::Opcode>(it.Next()); |
| DCHECK_EQ(Translation::BEGIN, opcode); |
| it.Skip(Translation::NumberOfOperandsFor(opcode)); |
| int depth = 0; |
| std::vector<CodeEntry*> inline_stack; |
| while (it.HasNext() && |
| Translation::BEGIN != |
| (opcode = static_cast<Translation::Opcode>(it.Next()))) { |
| if (opcode != Translation::JS_FRAME && |
| opcode != Translation::INTERPRETED_FRAME) { |
| it.Skip(Translation::NumberOfOperandsFor(opcode)); |
| continue; |
| } |
| it.Next(); // Skip ast_id |
| int shared_info_id = it.Next(); |
| it.Next(); // Skip height |
| SharedFunctionInfo* shared_info = SharedFunctionInfo::cast( |
| deopt_input_data->LiteralArray()->get(shared_info_id)); |
| if (!depth++) continue; // Skip the current function itself. |
| CodeEntry* inline_entry = new CodeEntry( |
| entry->tag(), GetFunctionName(shared_info->DebugName()), |
| CodeEntry::kEmptyNamePrefix, entry->resource_name(), |
| CpuProfileNode::kNoLineNumberInfo, |
| CpuProfileNode::kNoColumnNumberInfo, NULL, code->instruction_start()); |
| inline_entry->FillFunctionInfo(shared_info); |
| inline_stack.push_back(inline_entry); |
| } |
| if (!inline_stack.empty()) { |
| entry->AddInlineStack(pc_offset, inline_stack); |
| DCHECK(inline_stack.empty()); |
| } |
| } |
| } |
| |
| void ProfilerListener::RecordDeoptInlinedFrames(CodeEntry* entry, |
| AbstractCode* abstract_code) { |
| if (abstract_code->kind() != AbstractCode::OPTIMIZED_FUNCTION) return; |
| Code* code = abstract_code->GetCode(); |
| DeoptimizationInputData* deopt_input_data = |
| DeoptimizationInputData::cast(code->deoptimization_data()); |
| int const mask = RelocInfo::ModeMask(RelocInfo::DEOPT_ID); |
| for (RelocIterator rit(code, mask); !rit.done(); rit.next()) { |
| RelocInfo* reloc_info = rit.rinfo(); |
| DCHECK(RelocInfo::IsDeoptId(reloc_info->rmode())); |
| int deopt_id = static_cast<int>(reloc_info->data()); |
| int translation_index = |
| deopt_input_data->TranslationIndex(deopt_id)->value(); |
| TranslationIterator it(deopt_input_data->TranslationByteArray(), |
| translation_index); |
| Translation::Opcode opcode = static_cast<Translation::Opcode>(it.Next()); |
| DCHECK_EQ(Translation::BEGIN, opcode); |
| it.Skip(Translation::NumberOfOperandsFor(opcode)); |
| std::vector<CodeEntry::DeoptInlinedFrame> inlined_frames; |
| while (it.HasNext() && |
| Translation::BEGIN != |
| (opcode = static_cast<Translation::Opcode>(it.Next()))) { |
| if (opcode != Translation::JS_FRAME && |
| opcode != Translation::INTERPRETED_FRAME) { |
| it.Skip(Translation::NumberOfOperandsFor(opcode)); |
| continue; |
| } |
| BailoutId ast_id = BailoutId(it.Next()); |
| int shared_info_id = it.Next(); |
| it.Next(); // Skip height |
| SharedFunctionInfo* shared = SharedFunctionInfo::cast( |
| deopt_input_data->LiteralArray()->get(shared_info_id)); |
| int source_position; |
| if (opcode == Translation::INTERPRETED_FRAME) { |
| source_position = |
| Deoptimizer::ComputeSourcePositionFromBytecodeArray(shared, ast_id); |
| } else { |
| DCHECK(opcode == Translation::JS_FRAME); |
| source_position = |
| Deoptimizer::ComputeSourcePositionFromBaselineCode(shared, ast_id); |
| } |
| int script_id = v8::UnboundScript::kNoScriptId; |
| if (shared->script()->IsScript()) { |
| Script* script = Script::cast(shared->script()); |
| script_id = script->id(); |
| } |
| CodeEntry::DeoptInlinedFrame frame = {source_position, script_id}; |
| inlined_frames.push_back(frame); |
| } |
| if (!inlined_frames.empty() && !entry->HasDeoptInlinedFramesFor(deopt_id)) { |
| entry->AddDeoptInlinedFrames(deopt_id, inlined_frames); |
| DCHECK(inlined_frames.empty()); |
| } |
| } |
| } |
| |
| CodeEntry* ProfilerListener::NewCodeEntry( |
| CodeEventListener::LogEventsAndTags tag, const char* name, |
| const char* name_prefix, const char* resource_name, int line_number, |
| int column_number, JITLineInfoTable* line_info, Address instruction_start) { |
| CodeEntry* code_entry = |
| new CodeEntry(tag, name, name_prefix, resource_name, line_number, |
| column_number, line_info, instruction_start); |
| code_entries_.push_back(code_entry); |
| return code_entry; |
| } |
| |
| void ProfilerListener::AddObserver(CodeEventObserver* observer) { |
| if (std::find(observers_.begin(), observers_.end(), observer) != |
| observers_.end()) |
| return; |
| observers_.push_back(observer); |
| } |
| |
| void ProfilerListener::RemoveObserver(CodeEventObserver* observer) { |
| auto it = std::find(observers_.begin(), observers_.end(), observer); |
| if (it == observers_.end()) return; |
| observers_.erase(it); |
| } |
| |
| } // namespace internal |
| } // namespace v8 |
