Avoid hidden TLS access in CpuProfiler::is_profiling().

src/cpu-profiler.cc

 // Copyright 2010 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 270 matching lines @@
 }
 
 
 void CpuProfiler::StartProfiling(String* title) {
   ASSERT(Isolate::Current()->cpu_profiler() != NULL);
   Isolate::Current()->cpu_profiler()->StartCollectingProfile(title);
 }
 
 
 CpuProfile* CpuProfiler::StopProfiling(const char* title) {
-  return is_profiling() ?
-      Isolate::Current()->cpu_profiler()->StopCollectingProfile(title) : NULL;
+  Isolate* isolate = Isolate::Current();
+  return is_profiling(isolate) ?
+      isolate->cpu_profiler()->StopCollectingProfile(title) : NULL;
 }
 
 
 CpuProfile* CpuProfiler::StopProfiling(Object* security_token, String* title) {
-  return is_profiling() ?
-      Isolate::Current()->cpu_profiler()->StopCollectingProfile(
+  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 Isolate::Current()->cpu_profiler()->profiles_->Profiles(
       TokenEnumerator::kNoSecurityToken)->length();
 }
@@ skipping 20 matching lines @@
     return isolate->cpu_profiler()->processor_->TickSampleEvent();
   } else {
     return NULL;
   }
 }
 
 
 void CpuProfiler::DeleteAllProfiles() {
   Isolate* isolate = Isolate::Current();
   ASSERT(isolate->cpu_profiler() != NULL);
-  if (is_profiling())
+  if (is_profiling(isolate)) {
     isolate->cpu_profiler()->StopProcessor();
+  }
   isolate->cpu_profiler()->ResetProfiles();
 }
 
 
 void CpuProfiler::DeleteProfile(CpuProfile* profile) {
   ASSERT(Isolate::Current()->cpu_profiler() != NULL);
   Isolate::Current()->cpu_profiler()->profiles_->RemoveProfile(profile);
   delete profile;
 }
 
@@ skipping 246 matching lines @@
 #ifdef ENABLE_LOGGING_AND_PROFILING
   Isolate* isolate = Isolate::Current();
   if (isolate->cpu_profiler() != NULL) {
     delete isolate->cpu_profiler();
   }
   isolate->set_cpu_profiler(NULL);
 #endif
 }
 
 } }  // namespace v8::internal