Refactor CpuProfiler.

src/log.cc

 // Copyright 2011 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/log.h"
 
 #include <cstdarg>
 #include <sstream>
 
 #include "src/bailout-reason.h"
 #include "src/base/platform/platform.h"
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
 #include "src/counters.h"
 #include "src/deoptimizer.h"
 #include "src/global-handles.h"
 #include "src/interpreter/bytecodes.h"
 #include "src/interpreter/interpreter.h"
 #include "src/libsampler/v8-sampler.h"
 #include "src/log-inl.h"
 #include "src/log-utils.h"
 #include "src/macro-assembler.h"
 #include "src/perf-jit.h"
 #include "src/profiler/cpu-profiler-inl.h"
+#include "src/profiler/profiler-listener.h"
 #include "src/runtime-profiler.h"
 #include "src/string-stream.h"
 #include "src/vm-state-inl.h"
 
 namespace v8 {
 namespace internal {
 
 
 #define DECLARE_EVENT(ignore1, name) name,
 static const char* kLogEventsNames[CodeEventListener::NUMBER_OF_LOG_EVENTS] = {
@@ skipping 1747 matching lines @@
   }
 
   if (FLAG_log_internal_timer_events || FLAG_prof_cpp) timer_.Start();
 
   if (FLAG_prof_cpp) {
     profiler_ = new Profiler(isolate);
     is_logging_ = true;
     profiler_->Engage();
   }
 
+  profiler_listener_.reset();
+
   if (is_logging_) {
     addCodeEventListener(this);
   }
 
   return true;
 }
 
 
 void Logger::SetCodeEventHandler(uint32_t options,
                                  JitCodeEventHandler event_handler) {
   if (jit_logger_) {
       removeCodeEventListener(jit_logger_);
       delete jit_logger_;
       jit_logger_ = NULL;
   }
 
   if (event_handler) {
     jit_logger_ = new JitLogger(event_handler);
     addCodeEventListener(jit_logger_);
     if (options & kJitCodeEventEnumExisting) {
       HandleScope scope(isolate_);
       LogCodeObjects();
       LogCompiledFunctions();
     }
   }
 }
 
+void Logger::SetUpProfilerListener() {
+  if (!is_initialized_) return;
+  if (profiler_listener_.get() == nullptr) {
+    profiler_listener_.reset(new ProfilerListener(isolate_));
+  }
+  addCodeEventListener(profiler_listener_.get());
+}
+
+void Logger::TearDownProfilerListener() {
+  if (profiler_listener_->HasObservers()) return;
+  removeCodeEventListener(profiler_listener_.get());
+}
 
 sampler::Sampler* Logger::sampler() {
   return ticker_;
 }
 
 
 FILE* Logger::TearDown() {
   if (!is_initialized_) return NULL;
   is_initialized_ = false;
 
@@ skipping 24 matching lines @@
     delete ll_logger_;
     ll_logger_ = NULL;
   }
 
   if (jit_logger_) {
     removeCodeEventListener(jit_logger_);
     delete jit_logger_;
     jit_logger_ = NULL;
   }
 
+  if (profiler_listener_.get() != nullptr) {
+    removeCodeEventListener(profiler_listener_.get());
+  }
+
   return log_->Close();
 }
 
 }  // namespace internal
 }  // namespace v8