Maintain API compatibility with older versions of V8.

src/cpu-profiler.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 240 matching lines @@
     YieldCPU();
   }
 
   // Process remaining tick events.
   ticks_buffer_.FlushResidualRecords();
   // Perform processing until we have tick events, skip remaining code events.
   while (ProcessTicks(dequeue_order) && ProcessCodeEvent(&dequeue_order)) { }
 }
 
 
+void CpuProfiler::StartProfiling(const char* title) {
+  ASSERT(Isolate::Current()->cpu_profiler() != NULL);
+  Isolate::Current()->cpu_profiler()->StartCollectingProfile(title);
+}
+
+
+void CpuProfiler::StartProfiling(String* title) {
+  ASSERT(Isolate::Current()->cpu_profiler() != NULL);
+  Isolate::Current()->cpu_profiler()->StartCollectingProfile(title);
+}
+
+
+CpuProfile* CpuProfiler::StopProfiling(const char* title) {
+  Isolate* isolate = Isolate::Current();
+  return is_profiling(isolate) ?
+      isolate->cpu_profiler()->StopCollectingProfile(title) : NULL;
+}
+
+
+CpuProfile* CpuProfiler::StopProfiling(Object* security_token, String* title) {
+  Isolate* isolate = Isolate::Current();
+  return is_profiling(isolate) ?
+      isolate->cpu_profiler()->StopCollectingProfile(
+          security_token, title) : NULL;
+}
+
+
 int CpuProfiler::GetProfilesCount() {
+  ASSERT(Isolate::Current()->cpu_profiler() != NULL);
   // The count of profiles doesn't depend on a security token.
-  return profiles_->Profiles(TokenEnumerator::kNoSecurityToken)->length();
+  return Isolate::Current()->cpu_profiler()->profiles_->Profiles(
+      TokenEnumerator::kNoSecurityToken)->length();
 }
 
 
 CpuProfile* CpuProfiler::GetProfile(Object* security_token, int index) {
-  const int token = token_enumerator_->GetTokenId(security_token);
-  return profiles_->Profiles(token)->at(index);
+  ASSERT(Isolate::Current()->cpu_profiler() != NULL);
+  CpuProfiler* profiler = Isolate::Current()->cpu_profiler();
+  const int token = profiler->token_enumerator_->GetTokenId(security_token);
+  return profiler->profiles_->Profiles(token)->at(index);
 }
 
 
 CpuProfile* CpuProfiler::FindProfile(Object* security_token, unsigned uid) {
-  const int token = token_enumerator_->GetTokenId(security_token);
-  return profiles_->GetProfile(token, uid);
+  ASSERT(Isolate::Current()->cpu_profiler() != NULL);
+  CpuProfiler* profiler = Isolate::Current()->cpu_profiler();
+  const int token = profiler->token_enumerator_->GetTokenId(security_token);
+  return profiler->profiles_->GetProfile(token, uid);
 }
 
 
-TickSample* CpuProfiler::TickSampleEvent() {
-  if (is_profiling_) return processor_->TickSampleEvent();
-  return NULL;
+TickSample* CpuProfiler::TickSampleEvent(Isolate* isolate) {
+  if (CpuProfiler::is_profiling(isolate)) {
+    return isolate->cpu_profiler()->processor_->TickSampleEvent();
+  } else {
+    return NULL;
+  }
 }
 
 
 void CpuProfiler::DeleteAllProfiles() {
-  if (is_profiling_) StopProcessor();
-  ResetProfiles();
+  Isolate* isolate = Isolate::Current();
+  ASSERT(isolate->cpu_profiler() != NULL);
+  if (is_profiling(isolate)) {
+    isolate->cpu_profiler()->StopProcessor();
+  }
+  isolate->cpu_profiler()->ResetProfiles();
 }
 
 
 void CpuProfiler::DeleteProfile(CpuProfile* profile) {
-  profiles_->RemoveProfile(profile);
+  ASSERT(Isolate::Current()->cpu_profiler() != NULL);
+  Isolate::Current()->cpu_profiler()->profiles_->RemoveProfile(profile);
   delete profile;
 }
 
 
 bool CpuProfiler::HasDetachedProfiles() {
-  return profiles_->HasDetachedProfiles();
+  ASSERT(Isolate::Current()->cpu_profiler() != NULL);
+  return Isolate::Current()->cpu_profiler()->profiles_->HasDetachedProfiles();
 }
 
 
 void CpuProfiler::CallbackEvent(Name* name, Address entry_point) {
-  processor_->CallbackCreateEvent(
+  Isolate::Current()->cpu_profiler()->processor_->CallbackCreateEvent(
       Logger::CALLBACK_TAG, CodeEntry::kEmptyNamePrefix, name, entry_point);
 }
 
 
 void CpuProfiler::CodeCreateEvent(Logger::LogEventsAndTags tag,
                            Code* code, const char* comment) {
-  processor_->CodeCreateEvent(
+  Isolate::Current()->cpu_profiler()->processor_->CodeCreateEvent(
       tag, comment, code->address(), code->ExecutableSize());
 }
 
 
 void CpuProfiler::CodeCreateEvent(Logger::LogEventsAndTags tag,
                            Code* code, Name* name) {
-  processor_->CodeCreateEvent(
+  Isolate* isolate = Isolate::Current();
+  isolate->cpu_profiler()->processor_->CodeCreateEvent(
       tag,
       name,
-      isolate_->heap()->empty_string(),
+      isolate->heap()->empty_string(),
       v8::CpuProfileNode::kNoLineNumberInfo,
       code->address(),
       code->ExecutableSize(),
       NULL);
 }
 
 
 void CpuProfiler::CodeCreateEvent(Logger::LogEventsAndTags tag,
                                   Code* code,
                                   SharedFunctionInfo* shared,
                                   Name* name) {
-  processor_->CodeCreateEvent(
+  Isolate* isolate = Isolate::Current();
+  isolate->cpu_profiler()->processor_->CodeCreateEvent(
       tag,
       name,
-      isolate_->heap()->empty_string(),
+      isolate->heap()->empty_string(),
       v8::CpuProfileNode::kNoLineNumberInfo,
       code->address(),
       code->ExecutableSize(),
       shared->address());
 }
 
 
 void CpuProfiler::CodeCreateEvent(Logger::LogEventsAndTags tag,
                                   Code* code,
                                   SharedFunctionInfo* shared,
                                   String* source, int line) {
-  processor_->CodeCreateEvent(
+  Isolate::Current()->cpu_profiler()->processor_->CodeCreateEvent(
       tag,
       shared->DebugName(),
       source,
       line,
       code->address(),
       code->ExecutableSize(),
       shared->address());
 }
 
 
 void CpuProfiler::CodeCreateEvent(Logger::LogEventsAndTags tag,
                            Code* code, int args_count) {
-  processor_->CodeCreateEvent(
+  Isolate::Current()->cpu_profiler()->processor_->CodeCreateEvent(
       tag,
       args_count,
       code->address(),
       code->ExecutableSize());
 }
 
 
 void CpuProfiler::CodeMoveEvent(Address from, Address to) {
-  processor_->CodeMoveEvent(from, to);
+  Isolate::Current()->cpu_profiler()->processor_->CodeMoveEvent(from, to);
 }
 
 
 void CpuProfiler::CodeDeleteEvent(Address from) {
 }
 
 
 void CpuProfiler::SharedFunctionInfoMoveEvent(Address from, Address to) {
-  processor_->SharedFunctionInfoMoveEvent(from, to);
+  CpuProfiler* profiler = Isolate::Current()->cpu_profiler();
+  profiler->processor_->SharedFunctionInfoMoveEvent(from, to);
 }
 
 
 void CpuProfiler::GetterCallbackEvent(Name* name, Address entry_point) {
-  processor_->CallbackCreateEvent(
+  Isolate::Current()->cpu_profiler()->processor_->CallbackCreateEvent(
       Logger::CALLBACK_TAG, "get ", name, entry_point);
 }
 
 
 void CpuProfiler::RegExpCodeCreateEvent(Code* code, String* source) {
-  processor_->RegExpCodeCreateEvent(
+  Isolate::Current()->cpu_profiler()->processor_->RegExpCodeCreateEvent(
       Logger::REG_EXP_TAG,
       "RegExp: ",
       source,
       code->address(),
       code->ExecutableSize());
 }
 
 
 void CpuProfiler::SetterCallbackEvent(Name* name, Address entry_point) {
-  processor_->CallbackCreateEvent(
+  Isolate::Current()->cpu_profiler()->processor_->CallbackCreateEvent(
       Logger::CALLBACK_TAG, "set ", name, entry_point);
 }
 
 
-CpuProfiler::CpuProfiler(Isolate* isolate)
-    : isolate_(isolate),
-      profiles_(new CpuProfilesCollection()),
+CpuProfiler::CpuProfiler()
+    : profiles_(new CpuProfilesCollection()),
       next_profile_uid_(1),
       token_enumerator_(new TokenEnumerator()),
       generator_(NULL),
       processor_(NULL),
       need_to_stop_sampler_(false),
       is_profiling_(false) {
 }
 
 
 CpuProfiler::~CpuProfiler() {
   delete token_enumerator_;
   delete profiles_;
 }
 
 
 void CpuProfiler::ResetProfiles() {
   delete profiles_;
   profiles_ = new CpuProfilesCollection();
 }
 
-void CpuProfiler::StartProfiling(const char* title, bool record_samples) {
-  if (profiles_->StartProfiling(title, next_profile_uid_++, record_samples)) {
+void CpuProfiler::StartCollectingProfile(const char* title) {
+  if (profiles_->StartProfiling(title, next_profile_uid_++)) {
     StartProcessorIfNotStarted();
   }
   processor_->AddCurrentStack();
 }
 
 
-void CpuProfiler::StartProfiling(String* title, bool record_samples) {
-  StartProfiling(profiles_->GetName(title), record_samples);
+void CpuProfiler::StartCollectingProfile(String* title) {
+  StartCollectingProfile(profiles_->GetName(title));
 }
 
 
 void CpuProfiler::StartProcessorIfNotStarted() {
   if (processor_ == NULL) {
+    Isolate* isolate = Isolate::Current();
+
     // Disable logging when using the new implementation.
-    saved_logging_nesting_ = isolate_->logger()->logging_nesting_;
-    isolate_->logger()->logging_nesting_ = 0;
+    saved_logging_nesting_ = isolate->logger()->logging_nesting_;
+    isolate->logger()->logging_nesting_ = 0;
     generator_ = new ProfileGenerator(profiles_);
     processor_ = new ProfilerEventsProcessor(generator_);
     is_profiling_ = true;
     processor_->Start();
     // Enumerate stuff we already have in the heap.
-    if (isolate_->heap()->HasBeenSetUp()) {
+    if (isolate->heap()->HasBeenSetUp()) {
       if (!FLAG_prof_browser_mode) {
         bool saved_log_code_flag = FLAG_log_code;
         FLAG_log_code = true;
-        isolate_->logger()->LogCodeObjects();
+        isolate->logger()->LogCodeObjects();
         FLAG_log_code = saved_log_code_flag;
       }
-      isolate_->logger()->LogCompiledFunctions();
-      isolate_->logger()->LogAccessorCallbacks();
+      isolate->logger()->LogCompiledFunctions();
+      isolate->logger()->LogAccessorCallbacks();
     }
     // Enable stack sampling.
-    Sampler* sampler = reinterpret_cast<Sampler*>(isolate_->logger()->ticker_);
+    Sampler* sampler = reinterpret_cast<Sampler*>(isolate->logger()->ticker_);
     if (!sampler->IsActive()) {
       sampler->Start();
       need_to_stop_sampler_ = true;
     }
     sampler->IncreaseProfilingDepth();
   }
 }
 
 
-CpuProfile* CpuProfiler::StopProfiling(const char* title) {
-  if (!is_profiling_) return NULL;
+CpuProfile* CpuProfiler::StopCollectingProfile(const char* title) {
   const double actual_sampling_rate = generator_->actual_sampling_rate();
   StopProcessorIfLastProfile(title);
   CpuProfile* result =
       profiles_->StopProfiling(TokenEnumerator::kNoSecurityToken,
                                title,
                                actual_sampling_rate);
   if (result != NULL) {
     result->Print();
   }
   return result;
 }
 
 
-CpuProfile* CpuProfiler::StopProfiling(Object* security_token, String* title) {
-  if (!is_profiling_) return NULL;
+CpuProfile* CpuProfiler::StopCollectingProfile(Object* security_token,
+                                               String* title) {
   const double actual_sampling_rate = generator_->actual_sampling_rate();
   const char* profile_title = profiles_->GetName(title);
   StopProcessorIfLastProfile(profile_title);
   int token = token_enumerator_->GetTokenId(security_token);
   return profiles_->StopProfiling(token, profile_title, actual_sampling_rate);
 }
 
 
 void CpuProfiler::StopProcessorIfLastProfile(const char* title) {
   if (profiles_->IsLastProfile(title)) StopProcessor();
 }
 
 
 void CpuProfiler::StopProcessor() {
-  Logger* logger = isolate_->logger();
+  Logger* logger = Isolate::Current()->logger();
   Sampler* sampler = reinterpret_cast<Sampler*>(logger->ticker_);
   sampler->DecreaseProfilingDepth();
   if (need_to_stop_sampler_) {
     sampler->Stop();
     need_to_stop_sampler_ = false;
   }
   is_profiling_ = false;
   processor_->Stop();
   processor_->Join();
   delete processor_;
   delete generator_;
   processor_ = NULL;
   generator_ = NULL;
   logger->logging_nesting_ = saved_logging_nesting_;
 }
 
 
+void CpuProfiler::SetUp() {
+  Isolate* isolate = Isolate::Current();
+  if (isolate->cpu_profiler() == NULL) {
+    isolate->set_cpu_profiler(new CpuProfiler());
+  }
+}
+
+
+void CpuProfiler::TearDown() {
+  Isolate* isolate = Isolate::Current();
+  if (isolate->cpu_profiler() != NULL) {
+    delete isolate->cpu_profiler();
+  }
+  isolate->set_cpu_profiler(NULL);
+}
+
 } }  // namespace v8::internal