Expose TickSample and its APIs in v8-profiler.h

src/log.cc

Index: src/log.cc
diff --git a/src/log.cc b/src/log.cc
index 9f85213c3b7ea206705632a1640c302f62dec836..66b373f12e603748cbf5359e17511c8eeeae8f59 100644
--- a/src/log.cc
+++ b/src/log.cc
@@ -23,6 +23,7 @@
 #include "src/perf-jit.h"
 #include "src/profiler/cpu-profiler-inl.h"
 #include "src/profiler/profiler-listener.h"
+#include "src/profiler/tick-sample.h"
 #include "src/runtime-profiler.h"
 #include "src/string-stream.h"
 #include "src/vm-state-inl.h"
@@ -645,23 +646,25 @@ class Ticker: public sampler::Sampler {
 
   void SampleStack(const v8::RegisterState& state) override {
     v8::Isolate* v8_isolate = isolate();
-    Isolate* isolate = reinterpret_cast<Isolate*>(v8_isolate);
+    Isolate* i_isolate = reinterpret_cast<Isolate*>(v8_isolate);
 #if defined(USE_SIMULATOR)
-    if (!SimulatorHelper::FillRegisters(isolate,
+    if (!SimulatorHelper::FillRegisters(i_isolate,
                                         const_cast<v8::RegisterState*>(&state)))
       return;
 #endif
-    TickSample* sample = isolate->cpu_profiler()->StartTickSample();
+    TickSample* sample = i_isolate->cpu_profiler()->StartTickSample();
     TickSample sample_obj;
     if (sample == NULL) sample = &sample_obj;
-    sample->Init(isolate, state, TickSample::kIncludeCEntryFrame, true);
-    if (is_counting_samples_ && !sample->timestamp.IsNull()) {
+    sample->Init(v8_isolate, state, TickSample::kIncludeCEntryFrame, true);
+    if (sample->pc == nullptr) return;
+    sample->timestamp = base::TimeTicks::HighResolutionNow();
+    if (is_counting_samples_) {
       if (sample->state == JS) ++js_sample_count_;
       if (sample->state == EXTERNAL) ++external_sample_count_;
     }
     if (profiler_) profiler_->Insert(sample);
     if (sample != &sample_obj) {
-      isolate->cpu_profiler()->FinishTickSample();
+      i_isolate->cpu_profiler()->FinishTickSample();
     }
   }
 
@@ -1381,14 +1384,15 @@ void Logger::TickEvent(TickSample* sample, bool overflow) {
   }
   Log::MessageBuilder msg(log_);
   msg.Append("%s,", kLogEventsNames[CodeEventListener::TICK_EVENT]);
-  msg.AppendAddress(sample->pc);
+  msg.AppendAddress(reinterpret_cast<Address>(sample->pc));
   msg.Append(",%d", static_cast<int>(timer_.Elapsed().InMicroseconds()));
   if (sample->has_external_callback) {
     msg.Append(",1,");
-    msg.AppendAddress(sample->external_callback_entry);
+    msg.AppendAddress(
+        reinterpret_cast<Address>(sample->external_callback_entry));
   } else {
     msg.Append(",0,");
-    msg.AppendAddress(sample->tos);
+    msg.AppendAddress(reinterpret_cast<Address>(sample->tos));
   }
   msg.Append(",%d", static_cast<int>(sample->state));
   if (overflow) {
@@ -1396,7 +1400,7 @@ void Logger::TickEvent(TickSample* sample, bool overflow) {
   }
   for (unsigned i = 0; i < sample->frames_count; ++i) {
     msg.Append(',');
-    msg.AppendAddress(sample->stack[i]);
+    msg.AppendAddress(reinterpret_cast<Address>(sample->stack[i]));
   }
   msg.WriteToLogFile();
 }