Provide better script names in CPU profiler.

src/profiler/cpu-profiler.cc

 // Copyright 2012 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/cpu-profiler.h"
 
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/frames-inl.h"
 #include "src/locked-queue-inl.h"
@@ skipping 230 matching lines @@
 
 void CpuProfiler::CodeCreateEvent(Logger::LogEventsAndTags tag,
                                   AbstractCode* code,
                                   SharedFunctionInfo* shared,
                                   CompilationInfo* info, Name* script_name) {
   CodeEventsContainer evt_rec(CodeEventRecord::CODE_CREATION);
   CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_;
   rec->start = code->address();
   rec->entry = profiles_->NewCodeEntry(
       tag, profiles_->GetFunctionName(shared->DebugName()),
-      CodeEntry::kEmptyNamePrefix, profiles_->GetName(script_name),
+      CodeEntry::kEmptyNamePrefix,
+      profiles_->GetName(InferScriptName(script_name, shared)),
       CpuProfileNode::kNoLineNumberInfo, CpuProfileNode::kNoColumnNumberInfo,
       NULL, code->instruction_start());
   RecordInliningInfo(rec->entry, code);
   if (info) {
     rec->entry->set_inlined_function_infos(info->inlined_function_infos());
   }
   rec->entry->FillFunctionInfo(shared);
   rec->size = code->ExecutableSize();
   processor_->Enqueue(evt_rec);
 }
@@ skipping 31 matching lines @@
           bytecode->source_position_table());
       for (; !it.done(); it.Advance()) {
         int line_number = script->GetLineNumber(it.source_position()) + 1;
         int pc_offset = it.bytecode_offset() + BytecodeArray::kHeaderSize;
         line_table->SetPosition(pc_offset, line_number);
       }
     }
   }
   rec->entry = profiles_->NewCodeEntry(
       tag, profiles_->GetFunctionName(shared->DebugName()),
-      CodeEntry::kEmptyNamePrefix, profiles_->GetName(script_name), line,
-      column, line_table, abstract_code->instruction_start());
+      CodeEntry::kEmptyNamePrefix,
+      profiles_->GetName(InferScriptName(script_name, shared)), line, column,
+      line_table, abstract_code->instruction_start());
   RecordInliningInfo(rec->entry, abstract_code);
   if (info) {
     rec->entry->set_inlined_function_infos(info->inlined_function_infos());
   }
   rec->entry->FillFunctionInfo(shared);
   rec->size = abstract_code->ExecutableSize();
   processor_->Enqueue(evt_rec);
 }
 
 void CpuProfiler::CodeCreateEvent(Logger::LogEventsAndTags tag,
@@ skipping 69 matching lines @@
   CodeCreateEventRecord* rec = &evt_rec.CodeCreateEventRecord_;
   rec->start = entry_point;
   rec->entry = profiles_->NewCodeEntry(
       Logger::CALLBACK_TAG,
       profiles_->GetName(name),
       "set ");
   rec->size = 1;
   processor_->Enqueue(evt_rec);
 }
 
+Name* CpuProfiler::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 CpuProfiler::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();
@@ skipping 174 matching lines @@
     Builtins::Name id = static_cast<Builtins::Name>(i);
     rec->start = builtins->builtin(id)->address();
     rec->builtin_id = id;
     processor_->Enqueue(evt_rec);
   }
 }
 
 
 }  // namespace internal
 }  // namespace v8