[WIP]Create a V8 sampler library and tracing controller.

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 "include/v8-sampler.h"
 #include "src/bailout-reason.h"
 #include "src/base/platform/platform.h"
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
 #include "src/deoptimizer.h"
 #include "src/global-handles.h"
 #include "src/log-inl.h"
 #include "src/log-utils.h"
 #include "src/macro-assembler.h"
 #include "src/profiler/cpu-profiler.h"
 #include "src/runtime-profiler.h"
 #include "src/string-stream.h"
 #include "src/vm-state-inl.h"
+#include <iostream>
 
 namespace v8 {
 namespace internal {
 
 
 #define DECLARE_EVENT(ignore1, name) name,
 static const char* const kLogEventsNames[Logger::NUMBER_OF_LOG_EVENTS] = {
   LOG_EVENTS_AND_TAGS_LIST(DECLARE_EVENT)
 };
 #undef DECLARE_EVENT
@@ skipping 634 matching lines @@
 
   // Tells whether we are currently recording tick samples.
   bool paused_;
 };
 
 
 //
 // Ticker used to provide ticks to the profiler and the sliding state
 // window.
 //
-class Ticker: public Sampler {
+class Ticker: public V8Sampler {
  public:
-  Ticker(Isolate* isolate, int interval):
-      Sampler(isolate, interval),
+  Ticker(Isolate* isolate):
+      V8Sampler(reinterpret_cast<v8::Isolate*>(isolate)),
       profiler_(NULL) {}
 
   ~Ticker() { if (IsActive()) Stop(); }
 
   virtual void Tick(TickSample* sample) {
     if (profiler_) profiler_->Insert(sample);
   }
 
   void SetProfiler(Profiler* profiler) {
     DCHECK(profiler_ == NULL);
@@ skipping 1142 matching lines @@
   if (FLAG_perf_basic_prof) {
     perf_basic_logger_ = new PerfBasicLogger();
     addCodeEventListener(perf_basic_logger_);
   }
 
   if (FLAG_ll_prof) {
     ll_logger_ = new LowLevelLogger(log_file_name.str().c_str());
     addCodeEventListener(ll_logger_);
   }
 
-  ticker_ = new Ticker(isolate, kSamplingIntervalMs);
+  ticker_ = new Ticker(isolate);
 
   if (Log::InitLogAtStart()) {
     is_logging_ = true;
   }
 
   if (FLAG_log_internal_timer_events || FLAG_prof_cpp) timer_.Start();
 
   if (FLAG_prof_cpp) {
     profiler_ = new Profiler(isolate);
     is_logging_ = true;
@@ skipping 17 matching lines @@
     addCodeEventListener(jit_logger_);
     if (options & kJitCodeEventEnumExisting) {
       HandleScope scope(isolate_);
       LogCodeObjects();
       LogCompiledFunctions();
     }
   }
 }
 
 
-Sampler* Logger::sampler() {
+// Sampler* Logger::sampler() {
+V8Sampler* Logger::sampler() {
   return ticker_;
 }
 
 
 FILE* Logger::TearDown() {
   if (!is_initialized_) return NULL;
   is_initialized_ = false;
 
   // Stop the profiler before closing the file.
   if (profiler_ != NULL) {
@@ skipping 21 matching lines @@
     removeCodeEventListener(jit_logger_);
     delete jit_logger_;
     jit_logger_ = NULL;
   }
 
   return log_->Close();
 }
 
 }  // namespace internal
 }  // namespace v8