Revert "Perform CPU sampling by CPU sampling thread only iff processing thread is not running."

src/platform-freebsd.cc

Index: src/platform-freebsd.cc
diff --git a/src/platform-freebsd.cc b/src/platform-freebsd.cc
index 3ec02b780c047ca157163384cb056c37c39d5c70..1da46056907be4aba662ad2305f0642070876d27 100644
--- a/src/platform-freebsd.cc
+++ b/src/platform-freebsd.cc
@@ -685,7 +685,7 @@ static void ProfilerSignalHandler(int signal, siginfo_t* info, void* context) {
   if (sampler == NULL || !sampler->IsActive()) return;
 
   TickSample sample_obj;
-  TickSample* sample = CpuProfiler::StartTickSampleEvent(isolate);
+  TickSample* sample = CpuProfiler::TickSampleEvent(isolate);
   if (sample == NULL) sample = &sample_obj;
 
   // Extracting the sample from the context is extremely machine dependent.
@@ -707,7 +707,6 @@ static void ProfilerSignalHandler(int signal, siginfo_t* info, void* context) {
 #endif
   sampler->SampleStack(sample);
   sampler->Tick(sample);
-  CpuProfiler::FinishTickSampleEvent(isolate);
 }
 
 
@@ -891,11 +890,6 @@ Sampler::~Sampler() {
 }
 
 
-void Sampler::DoSample() {
-  // TODO(rogulenko): implement
-}
-
-
 void Sampler::Start() {
   ASSERT(!IsActive());
   SetActive(true);
@@ -910,12 +904,4 @@ void Sampler::Stop() {
 }
 
 
-void Sampler::StartSampling() {
-}
-
-
-void Sampler::StopSampling() {
-}
-
-
 } }  // namespace v8::internal